WO2019064595A1 - Capteur de panneau tactile et procédé de fabrication de capteur de panneau tactile - Google Patents

Capteur de panneau tactile et procédé de fabrication de capteur de panneau tactile Download PDF

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Publication number
WO2019064595A1
WO2019064595A1 PCT/JP2017/035738 JP2017035738W WO2019064595A1 WO 2019064595 A1 WO2019064595 A1 WO 2019064595A1 JP 2017035738 W JP2017035738 W JP 2017035738W WO 2019064595 A1 WO2019064595 A1 WO 2019064595A1
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WIPO (PCT)
Prior art keywords
sensor
touch
group
touch panel
channels
Prior art date
Application number
PCT/JP2017/035738
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English (en)
Japanese (ja)
Inventor
一歩 浦山
大屋　秀信
小俣　猛憲
直人 新妻
星野　秀樹
正好 山内
牛久　正幸
亮 青山
Original Assignee
コニカミノルタ株式会社
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Publication date
Application filed by コニカミノルタ株式会社 filed Critical コニカミノルタ株式会社
Priority to PCT/JP2017/035738 priority Critical patent/WO2019064595A1/fr
Priority to KR1020207008634A priority patent/KR20200044081A/ko
Priority to JP2019544192A priority patent/JPWO2019064595A1/ja
Priority to CN201780095135.2A priority patent/CN111133405A/zh
Publication of WO2019064595A1 publication Critical patent/WO2019064595A1/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
    • 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
    • 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 touch panel sensor and a method of manufacturing the touch panel sensor, and more specifically, a touch panel sensor capable of preventing a decrease in touch sensitivity due to an increase in the touch sensor effective area and avoiding intervention of an area not contributing to touch detection. And a method of manufacturing a touch panel sensor.
  • Patent Document 1 a capacitive touch panel sensor is used for a touch panel of a mobile terminal device or the like.
  • Patent Document 2 proposes a touch panel sensor used for a horizontally long touch panel.
  • the above-described increase in resistance can be avoided by preparing a plurality of touch panel sensors and arranging the touch sensor effective areas of the touch panel sensors in parallel in a long shape.
  • areas that do not contribute to touch detection intervene between the touch sensor effective areas.
  • the first sensor group comprising a plurality of sensor channels is provided on one side of the substrate,
  • the opposite surface of the substrate is provided with a second sensor group constituted by a plurality of sensor channels,
  • the plurality of sensor channels constituting the first sensor group and the plurality of sensor channels constituting the second sensor group are oriented in a direction intersecting with each other, and the first sensor group and the second sensor group And form a rectangular touch sensor effective area
  • the sensor length of the longest sensor channel among the plurality of sensor channels constituting the first sensor group is x
  • the sensor length of the longest sensor channel among the plurality of sensor channels constituting the second sensor group is y
  • a touch panel sensor satisfying x ⁇ y ⁇ , where ⁇ is a long side of the touch sensor effective area.
  • the first sensor group comprising a plurality of sensor channels is provided on one side of the substrate,
  • the opposite surface of the substrate is provided with a second sensor group constituted by a plurality of sensor channels,
  • the plurality of sensor channels constituting the first sensor group and the plurality of sensor channels constituting the second sensor group are oriented in a direction intersecting with each other, and the first sensor group and the second sensor group
  • a method of manufacturing a touch panel sensor in which a rectangular touch sensor effective area is formed by The sensor length of the longest sensor channel among the plurality of sensor channels constituting the first sensor group is x, and the sensor length of the longest sensor channel among the plurality of sensor channels constituting the second sensor group is y
  • the method of manufacturing a touch panel sensor wherein x ⁇ y ⁇ is satisfied, where ⁇ is a long side of the touch sensor effective area.
  • a touch panel sensor and a method of manufacturing the touch panel sensor that can prevent the decrease in touch sensitivity due to the increase in length of the touch sensor effective area and can avoid the intervention of the area not contributing to touch detection.
  • a figure explaining composition of one side of a substrate in a touch panel sensor concerning a 1st embodiment A figure explaining composition of an opposite side of a substrate in a touch panel sensor concerning a 1st embodiment
  • the figure explaining the touch panel sensor concerning a 2nd embodiment The figure explaining the touch panel sensor concerning a 3rd embodiment Diagram explaining thin line formation by coffee stain phenomenon
  • a diagram for explaining a first aspect of mesh pattern formation A diagram for explaining the second aspect of mesh pattern formation
  • the touch panel sensor comprises a first sensor group constituted by a plurality of sensor channels (sometimes referred to as sensor electrodes) on one side of a substrate, and a plurality of sensor channels on the opposite surface of the substrate A second set of sensors.
  • the plurality of sensor channels constituting the first sensor group and the plurality of sensor channels constituting the second sensor group are oriented in a direction intersecting with each other, and the first sensor group and the second sensor group And a rectangular touch sensor effective area is formed.
  • the sensor length of the longest sensor channel among the plurality of sensor channels constituting the first sensor group is x
  • the sensor length of the longest sensor channel among the plurality of sensor channels constituting the second sensor group is y If the long side of the touch sensor effective area is ⁇ , x ⁇ y ⁇ is satisfied. According to such a touch panel sensor, it is possible to prevent a decrease in touch sensitivity due to an increase in the length of the touch sensor effective area, and to obtain an effect of avoiding the intervention of the area not contributing to the touch detection.
  • FIG. 1 is a plan view illustrating the configuration provided on one side of a substrate 1 constituting a touch panel sensor.
  • FIG. 2 is a plan view of the configuration provided on the opposite surface of the base material 1 in plan view from the same direction as FIG. 1.
  • the configuration disposed on the opposite surface of the substrate 1 is shown by a solid line for convenience of explanation.
  • 3 is a plan view of the first sensor group 20 provided on one side of the base 1 and the second sensor group 40 provided on the opposite side of the base 1 in the same direction as FIG. FIG.
  • the touch panel sensor is provided with a first sensor group 20 configured by a plurality of sensor channels 2 on one side of a base 1.
  • a base material 1 As a base material 1, a transparent base material etc. are mentioned, for example.
  • the degree of transparency of the transparent substrate is not particularly limited, and the light transmittance may be any of several% to several tens%, and the spectral transmittance may be any. These light transmittances and spectral transmittances can be appropriately determined according to the application and purpose.
  • the material of the base material 1 is not particularly limited, and for example, a synthetic resin material or the like can be used.
  • a synthetic resin material for example, polyethylene terephthalate (PET) resin, polyethylene naphthalate (PEN) resin, polybutylene terephthalate resin, cellulose resin (polyacetyl cellulose, cellulose diacetate, cellulose triacetate, etc.), polyethylene resin, polypropylene resin Resin, methacrylic resin, cyclic polyolefin resin, polystyrene resin, acrylonitrile- (poly) styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyvinyl chloride resin, poly ( Examples include meta) acrylic resins, polycarbonate resins, polyester resins, polyimide resins, polyamide resins, polyamideimide resins and the like. If these materials are used, good transparency can be given to the substrate 1. Moreover,
  • the shape of the substrate 1 is not particularly limited, and may be, for example, a plate (plate) or the like.
  • the thickness is not particularly limited, and can be appropriately determined depending on the application and purpose, and can be, for example, about 1 ⁇ m to 10 cm, and further about 20 ⁇ m to 300 ⁇ m.
  • the base material 1 what has a magnitude
  • the substrate 1 may be subjected to surface treatment for changing the surface energy.
  • the substrate 1 may have a single-layer structure or a laminated structure.
  • the substrate 1 may be provided with an antireflection layer or the like on its surface.
  • Each sensor channel 2 constituting the first sensor group 20 preferably has light transparency.
  • the sensor channel 2 is made of, for example, a mode constituted by a plurality of conductive thin wires 21 two-dimensionally arranged on the substrate 1, or a transparent conductive material such as ITO (complex oxide of indium-tin). Although it may be in any form, it is preferable to use a plurality of conductive thin wires 21 as shown in FIG.
  • the sensor channel 2 constituted by the plurality of conductive thin wires 21 can transmit light through the gaps between the conductive thin wires 21. Therefore, even if the conductive material itself is not transparent, it exhibits excellent light transmittance.
  • the pattern formed by the plurality of conductive thin wires 21 is not limited to the illustrated mesh pattern, and may be, for example, a stripe pattern or a random pattern.
  • Examples of a method of forming the conductive thin line 21 on the substrate 1 include a printing method and photolithography, and the printing method is particularly preferably used.
  • the conductive fine wire 21 can be formed by applying an ink containing a conductive material onto the substrate 1.
  • the printing method is not particularly limited, and examples thereof include screen printing method, letterpress printing method, intaglio printing method, offset printing method, flexographic printing method, ink jet method and the like, among which the ink jet method is preferable.
  • the droplet discharge method of the ink jet head in the ink jet method is not particularly limited, and examples thereof include a piezo method and a thermal method. When using the printing method, it is preferable to use the coffee stain phenomenon described in detail later.
  • the sensor channel 2 is formed in a band shape on one side of the substrate 1.
  • the plurality of strip-shaped sensor channels 2 are juxtaposed at predetermined intervals in the width direction of the sensor channel 2.
  • the longitudinal direction (the direction from the lower left to the upper right in FIG. 1) of the sensor channel 2 is inclined with respect to both the long side and the short side of the rectangular touch sensor effective area S.
  • a lead wire 3 is connected to each of the sensor channels 2 that constitute the first sensor group 20.
  • the lead-out wiring 3 extends to a connector portion 6 provided on one long side 11 side of the rectangular base 1.
  • the lead wiring 3 is provided to connect the sensor channel 2 to a not-shown arithmetic circuit (for example, a touch panel control IC) for touch detection.
  • a not-shown arithmetic circuit for example, a touch panel control IC
  • the lead-out wiring 3 can also be formed by the above-described printing method, photolithography, or the like, and is preferably formed by a printing method using an ink containing a conductive material, and it is particularly preferable to use an inkjet method.
  • the connector portion 6 is a portion for connecting an external wiring such as an FPC (flexible printed wiring board) not shown, and is constituted by a plurality of terminals respectively connected to one end of a plurality of lead wirings 3 juxtaposed There is.
  • the sensor channel 2 can be electrically connected to the arithmetic circuit through the lead wire 3, the connector portion 4 and the FPC.
  • the connector portion 6 can also be formed by the above-described printing method, photolithography, or the like, and is preferably formed by a printing method using an ink containing a conductive material, and it is particularly preferable to use the inkjet method.
  • the touch panel sensor is provided with a second sensor group 40 formed of a plurality of sensor channels 4 on the opposite surface of the base 1.
  • the components provided on the opposite surface of the substrate 1 are the same as the components provided on one surface of the substrate 1 described above unless otherwise noted, and the description given for the single surface is incorporated herein by reference. Is omitted.
  • the sensor channel 4 configuring the second sensor group 40 is configured by a plurality of conductive thin wires 41 similarly to the sensor channel 2 configuring the first sensor group 20.
  • the sensor channels 4 constituting the second sensor group 40 are electrically isolated from the sensor channels 2 constituting the first sensor group 20 by interposing the base material 1 therebetween.
  • the sensor channel 4 is formed in a band shape on the opposite surface of the substrate 1.
  • the plurality of strip-shaped sensor channels 4 are juxtaposed in the rectangular touch sensor effective area S at a predetermined interval.
  • the longitudinal direction (the direction from the lower right to the upper left in FIG. 2) of the sensor channel 4 is inclined with respect to both the long side and the short side of the touch sensor effective area S.
  • a lead wire 5 is connected to each of the sensor channels 2 constituting the second sensor group 40.
  • the lead wire 5 extends to the connector portion 7 provided on the other long side 12 side of the rectangular base 1.
  • the plurality of sensor channels 2 constituting the first sensor group 20 and the plurality of sensor channels 4 constituting the second sensor group 40 are in a direction crossing each other with the substrate 1 interposed therebetween. It is oriented.
  • the first sensor group 20 and the second sensor group 40 are formed over the entire area of the rectangular touch sensor effective area S, whereby touch detection in a two-dimensional coordinate system is performed within the touch sensor effective area S. It will be possible.
  • the sensor channels 2 and 4 are inclined with respect to the long side direction and the short side direction of the base material, but two-dimensional corresponding to the long side direction and the short side direction of the base material by, for example, coordinate conversion by an arithmetic circuit. It is also possible to detect touch in a coordinate system.
  • the sensor length of the longest sensor channel 2 among the plurality of sensor channels 2 constituting the first sensor group 20 is x
  • the longest sensor among the plurality of sensor channels 4 constituting the second sensor group 40 Assuming that the sensor length of the channel 4 is y and the long side of the touch sensor effective area S is ⁇ , x ⁇ y ⁇ is satisfied.
  • the longest sensor channel 2 refers to one of the plurality of sensor channels 2 having the longest longitudinal length.
  • the longest sensor channel 4 refers to the longest sensor channel 4 among the plurality of sensor channels 4.
  • the sensor length x, y of the longest sensor channel 2, 4 is the longitudinal length of the sensor channel 2, 4.
  • the sensor channels 2 and 4 have a predetermined width, as shown in FIG. 1 and FIG. 2, they are longitudinal lengths based on the center of the width.
  • FIG. 9 is a diagram for explaining a touch panel sensor according to a reference example.
  • reference numeral 101 denotes a sensor channel oriented in the direction of the long side of the touch sensor effective area S
  • reference numeral 102 denotes a lead wire connected to the sensor channel 101
  • Reference numeral 103 denotes a sensor channel oriented in the direction of the short side of the touch sensor effective area S
  • reference numeral 104 denotes a lead wire connected to the sensor channel 103.
  • the sensor channels 2 and 4 are shorter than the long side ⁇ of the touch sensor effective area S even if the longest. High resistance of 4 is prevented. Therefore, in contrast to the reference example shown in FIG. 9A, it is possible to prevent a decrease in touch sensitivity due to the lengthening of the touch sensor effective area S. Further, in the present embodiment, touch detection is possible over the entire length of the touch sensor effective area S, and in contrast to the reference example shown in FIG. Intervention can be avoided.
  • the touch sensor effective area S is elongated, it is possible to prevent the sensor channels 2 and 4 from increasing in resistance, and to avoid the intervention of the area that does not contribute to touch detection. Therefore, the larger the degree of lengthening of the touch sensor effective area S, the more remarkable the effect is exerted, for example, in comparison with the above-described reference example. From such a viewpoint, it is preferable that the degree of elongation be large, and specifically, it is particularly preferable to satisfy 3 ⁇ ⁇ ⁇ , where ⁇ is the short side of the touch sensor effective area S.
  • the touch sensor effective area S can be suitably coped with as well as lengthened, and for example, the aspect ratio 16: 9 is 50 inches or more, more specifically 55 inches to 60 inches.
  • the touch sensor effective area S can be elongated and enlarged so as to cover the area in the case where two or more displays of the degree are arranged in parallel in the long side direction.
  • the touch sensor effective area S is elongated, the resistance increase of the sensor channels 2 and 4 is prevented, so that the selection freedom of the conductive material constituting the sensor channels 2 and 4 can be enhanced. .
  • ITO which is inferior in conductivity as a conductive material, for example, as the conductive material, the sensor channels 2 and 4 can be shortened, so that high resistance can be prevented and the conductivity of the material itself is inferior. It becomes difficult to cause a decrease in touch sensitivity.
  • the touch sensor effective area S is elongated, the resistance increase of the sensor channels 2 and 4 is prevented. Therefore, in the case where the sensor channels 2 and 4 are configured by a plurality of conductive thin wires 21 and 41, It is acceptable to form the conductive thin wires 21 and 41 with a narrow line width. That is, the conductivity decreases as the line width of the conductive thin wires 21 and 41 decreases, but the sensor channels 2 and 4 can be shortened, so that the increase in resistance is prevented, and the touch sensitivity decreases even if the line width decreases. It is hard to invite.
  • the conductive thin wires 21 and 41 whose line widths are narrowed to such an extent that they are difficult to view can be suitably used, and the transparency and low visibility of the sensor channels 2 and 4 (properties difficult to see) Can be improved.
  • narrowing the line width of the conductive thin wires 21 and 41 to, for example, 20 ⁇ m or less, 15 ⁇ m or less, and further 10 ⁇ m or less an effect excellent in transparency and low visibility and excellent in touch sensitivity can be obtained.
  • the lower limit of the line width of the conductive thin wires 21 and 41 is not particularly limited, but can be, for example, 1 ⁇ m or more from the viewpoint of providing stable conductivity.
  • the effect of improving the position accuracy of touch detection can be obtained.
  • a square formed by intersecting two sensor channels 2 adjacent to each other and two sensor channels 4 adjacent to each other is a square.
  • the lead wires 3 and 5 are connected to the plurality of sensor channels 2 and 4 that constitute the first sensor group 20 and the second sensor group 40, respectively.
  • the plurality of lead wires 3 are connected to the sensor channel 2 on one long side of the rectangular touch sensor effective area S, and the sensor channel on the other long side It is preferable to be constituted by the lead-out wiring 3 connected to 2.
  • the plurality of lead wires 5 are connected to the sensor channel 4 on one long side of the rectangular touch sensor effective area S, and the other long side is connected to the sensor channel 4.
  • the lead wire 5 is connected to the sensor channel 4.
  • the connecting portion 6 of the first sensor group 20 is provided on one long side 11 side of the rectangular base 1, and the connecting portion 7 of the second sensor group 40 is rectangular. Although it showed about the case where it provides in the other long side 12 side of the base material 1, it is not limited to this. This will be described with reference to FIG.
  • FIG. 4 is a view for explaining a touch panel sensor according to a second embodiment.
  • FIG. 4A is a plan view for explaining the configuration provided on one side of the base material 1 constituting the touch panel sensor.
  • FIG.4 (b) is the top view which planarly viewed the structure provided in the opposite surface of the base material 1 from the same direction as Fig.4 (a).
  • the configuration disposed on the opposite surface of the substrate 1 is shown by a solid line for the convenience of description.
  • connection part 6 of the 1st sensor group 20 is provided in one long side 11 side of the rectangular-shaped base material 1.
  • the connecting portion 7 of the second sensor group 40 is also provided on one long side 11 side of the rectangular base 1.
  • connection portion 6 of the first sensor group 20 may be formed collectively on one long side 11 side or the other long side 12 side of the rectangular base material 1, but one long side 11 side and the other It may be formed to be divided into the long side 12 side. This will be described with reference to FIG.
  • FIG. 5 is a view for explaining a touch panel sensor according to a third embodiment.
  • Fig.5 (a) is a top view explaining the structure provided in the single side
  • FIG.5 (b) is the top view which planarly viewed the structure provided in the opposite surface of the base material 1 from the same direction as Fig.5 (a).
  • the configuration disposed on the opposite surface of the substrate 1 is shown by a solid line for the convenience of description.
  • the connecting portion 6 of the first sensor group 20 is divided into one long side 11 side of the base material 1 and the other long side 12 side. It is formed as.
  • the plurality of lead wires 3 respectively connected to the plurality of sensor channels 2 of the first sensor group 20 are lead wires connected to the sensor channel 2 on one long side of the rectangular touch sensor effective area S 3 and an extraction wiring 3 connected to the sensor channel 2 on the other long side.
  • the lead wire 3 connected to the sensor channel 2 on one long side of the rectangular touch sensor effective area S is a connect formed on one long side 11 of the base 1. It extends to part 6.
  • the lead wire 3 connected to the sensor channel 2 on the other long side of the rectangular touch sensor effective area S extends to the connecting portion 6 formed on the other long side 12 side of the substrate 1 .
  • the second sensor group 40 on the opposite surface of the base 1 shown in FIG. 5B and the sensor on one long side of the rectangular touch sensor effective area S in the lead wire 5
  • the lead wire 5 connected to the channel 4 extends to the connecting portion 7 formed on one long side 11 side of the base 1.
  • the lead wire 5 connected to the sensor channel 4 on the other long side of the rectangular touch sensor effective area S extends to the connecting portion 7 formed on the other long side 12 side of the substrate 1 .
  • the lead wires 3 and 5 do not need to be routed to the short side of the touch sensor effective area S, so that the effect of further narrowing the short side of the touch sensor effective area S to the bezel can be obtained. .
  • the sensor channel 2 is preferably formed by a plurality of conductive thin lines.
  • the conductive thin line is formed by the printing method, it is preferable to form the conductive thin line using the coffee stain phenomenon when drying the ink applied on the substrate. This will be described with reference to FIG.
  • a line-like liquid 22 made of an ink containing a conductive material is applied onto a substrate 1.
  • the conductive fine wire 21 can be formed by selectively depositing the conductive material on the edge of the line-like liquid 22 in the process of drying the line-like liquid 22.
  • the conductive material is selectively deposited on both edges along the longitudinal direction of the linear liquid 22 to form the pair of conductive thin wires 21, 21.
  • the pair of conductive thin wires 21 can be formed in parallel with each other.
  • the line width of the conductive thin wire 21 can be smaller than the line width of the linear liquid 22, and can be, for example, 20 ⁇ m or less, 15 ⁇ m or less, or 10 ⁇ m or less.
  • the lower limit of the line width of the conductive thin wire 21 is not particularly limited, but can be, for example, 1 ⁇ m or more from the viewpoint of providing stable conductivity.
  • Various patterns can be formed by the one or more conductive thin lines 21. Examples of such patterns include stripe patterns and mesh patterns.
  • the sensor channel 2 is composed of, for example, a plurality of conductive thin wires 21 provided to form a stripe pattern, a mesh pattern, or the like.
  • the first aspect of mesh pattern formation will be described with reference to FIG. 7, and then the second aspect of mesh pattern formation will be described with reference to FIG. 8.
  • a plurality of line-shaped liquids 22 arranged in parallel at a predetermined interval are formed on the base material 1.
  • a plurality of line-shaped liquids 22 arranged in parallel at predetermined intervals are formed so as to intersect the plurality of conductive thin lines 21 formed previously.
  • a coffee stain phenomenon is used to form a pair of conductive thin wires 21 and 21 from each linear liquid 22.
  • a mesh pattern can be formed as described above.
  • the line-like liquid 22 and the electroconductive thin wire 21 are made into a straight line, it is not limited to this.
  • the shapes of the linear liquid 22 and the conductive thin line 21 may be, for example, a wavy line or a zigzag line.
  • the longitudinal direction (vertical direction in the drawing) and the width direction (horizontal direction in the drawing) of the base material 1 A plurality of square-shaped line-like liquids 22 juxtaposed at predetermined intervals.
  • a thin line unit consisting of a pair of conductive thin lines 21 is obtained from each line-like liquid 22 using the coffee stain phenomenon.
  • one of the conductive thin wires 21 and 21 includes the other (the inner conductive thin wire 21) inside, and is formed concentrically.
  • the conductive thin wires 21 and 21 respectively form a quadrangle corresponding to the shapes of both edges (inner peripheral edge and outer peripheral edge) of the linear liquid 22.
  • a plurality of square line liquid liquids 22 are formed on the base material 1 at predetermined intervals in the longitudinal direction and the width direction of the base material 1.
  • the line-like liquid 22 forming a plurality of quadrilaterals is formed at a position sandwiched between the thin wire units formed earlier.
  • the line-like liquid 22 forming a square is disposed so as to be in contact with the outer conductive thin wire 21 of the thin wire units adjacent thereto but not to contact the inner conductive thin wire 21.
  • the outer conductive thin wires 21 are connected to the adjacent outer conductive thin wires 21.
  • the inner conductive thin wire 21 is not connected to the other inner conductive thin wire 21 and the outer conductive thin wire 21. That is, the inner conductive thin wires 21 are arranged to be isolated.
  • the pattern shown in FIG. 8D may be used as a mesh pattern as it is.
  • the inner conductive thin wires 21 in the pattern shown in FIG. 8 (d) may be removed to form a mesh pattern (FIG. 8 (e)) composed of the outer conductive thin wires 21.
  • the arrangement interval of the plurality of conductive thin wires 21 can be set to a high degree of freedom without depending on the line width of the line liquid 22.
  • the method of removing the conductive fine wire 21 on the inner side is not particularly limited, and for example, a method of irradiating an energy beam such as a laser beam or a method of chemically etching can be used.
  • the inner conductive thin wire 21 is removed by a plating solution.
  • the inner conductive thin wire 21 is disposed so as to be isolated, and can be excluded from the conduction path for applying the electrolytic plating to the outer conductive thin wire 21. Therefore, while the electrolytic thin line 21 on the outer side is subjected to electrolytic plating (while conducting electricity), the conductive thin line 21 on the inner side not subjected to electrolytic plating is dissolved or decomposed and removed by the plating solution. it can.
  • the mesh pattern can be configured by combining a plurality of conductive thin wires 21 forming a square.
  • a plurality of conductive thin wires 21 forming a square are two-dimensionally arranged in the direction of two diagonal lines of the square.
  • the conductive thin wires 21 forming quadrilaterals which are adjacent to each other intersect at two intersection points by intersecting both sides sandwiching the apex.
  • the conductivity between the conductive thin wires 21 forming quadrilaterals adjacent to each other becomes stable, and the conductivity of the entire mesh pattern can be improved.
  • the conductive thin lines 21 forming the quadrangle adjacent to each other in the entire group intersect at two intersection points by crossing the two sides sandwiching the apex is shown.
  • the conductive thin lines 21 forming at least one set of mutually adjacent quadrilaterals may cross at two intersection points by intersecting both sides sandwiching the apex.
  • linear liquid 22 and the conductive thin wire 21 are made into the square, it is not limited to this.
  • shape of the linear liquid 20 and the conductive thin line 21 include a closed geometric figure.
  • closed geometric figures include polygons such as triangles, quadrilaterals, hexagons, octagons and the like.
  • closed geometric figures may include curvilinear elements, such as, for example, circles, ovals, and the like.
  • the conductive material to be contained in the ink is not particularly limited, and examples thereof include conductive particles, conductive polymers, and the like.
  • Examples of the conductive fine particles include metal fine particles and carbon fine particles.
  • the metal constituting the metal fine particles for example, Au, Pt, Ag, Cu, Ni, Cr, Rh, Pd, Zn, Co, Mo, Ru, W, Os, Ir, Fe, Mn, Ge, Sn, Ga, In etc. are mentioned.
  • Au, Ag and Cu are preferable, and Ag is particularly preferable.
  • the average particle size of the metal fine particles can be, for example, 1 to 100 nm, and further 3 to 50 nm.
  • the average particle size is a volume average particle size and can be measured by "Zeta Sizer 1000 HS" manufactured by Malvern.
  • carbon fine particles examples include graphite fine particles, carbon nanotubes, fullerenes and the like.
  • the conductive polymer is not particularly limited, but preferably includes a ⁇ -conjugated conductive polymer.
  • Examples of the ⁇ -conjugated conductive polymer include polythiophenes and polyanilines.
  • the ⁇ -conjugated conductive polymer may be used together with a polyanion such as polystyrene sulfonic acid.
  • the concentration of the conductive material in the ink can be, for example, 5% by weight or less, and can be 0.01% by weight or more and 1.0% by weight or less. As a result, the coffee stain phenomenon is promoted, and effects such as making the conductive thin line thinner can be obtained.
  • the solvent used for the ink is not particularly limited, and may contain one or more selected from water and organic solvents.
  • organic solvent for example, alcohols such as 1,2-hexanediol, 2-methyl-2,4-pentanediol, 1,3-butanediol, 1,4-butanediol, propylene glycol, etc., diethylene glycol monomethyl ether, Ethers, such as diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, etc. are mentioned.
  • the ink can also contain other components such as a surfactant.
  • the surfactant is not particularly limited, and examples thereof include silicon surfactants.
  • the concentration of surfactant in the ink can be, for example, 1% by weight or less.
  • the method of drying the ink (line-like liquid) applied on the substrate may be natural drying or forced drying.
  • the drying method used for forced drying is not particularly limited. For example, a method of heating the surface of the substrate to a predetermined temperature, a method of forming an air flow on the surface of the substrate, etc. can be used alone or in combination. .
  • the air flow can be formed, for example, by blowing or suction using a fan or the like.
  • the conductive fine wires formed on the substrate can be subjected to post-treatment.
  • the post treatment for example, baking treatment, plating treatment and the like can be mentioned. After the baking treatment, a plating treatment may be performed.
  • Examples of the baking treatment include light irradiation treatment, heat treatment and the like.
  • light irradiation process for example, gamma rays, X rays, ultraviolet rays, visible light, infrared rays (IR), microwaves, radio waves and the like can be used.
  • heat treatment for example, hot air, a heating stage, a heating press, or the like can be used.
  • Examples of the plating treatment include electroless plating, electrolytic plating and the like.
  • plating can be selectively performed on the conductive thin wire by utilizing the conductivity of the conductive thin wire. At the time of electrolytic plating, it is preferable to supply power from the plating bus line described above.
  • the conductive thin line may be plated a plurality of times. A plurality of plating processes with different plating metals may be performed. A plurality of metal layers can be stacked on the conductive thin wire by plating a plurality of times.
  • the effect of copper conductivity improvement can be obtained by sequentially laminating the first metal layer made of copper and the second metal layer made of nickel or chromium on the conductive fine wires, and nickel or The effect of improving the weatherability by chromium and the effect of eliminating the color can be obtained.
  • an oxidizing agent such as sodium persulfate, cupric chloride, hydrogen peroxide or the like may be contained in the plating solution used for electrolytic plating. The use of the oxidizing agent can improve the conductivity of the conductive thin wire and suppress the plating thickness. This effect is particularly well exhibited when the conductive thin line formed by utilizing the coffee stain phenomenon is targeted.
  • a film such as a cured film can be formed on the base on which the sensor channel and the lead wiring are formed.
  • the cured film can be formed, for example, by applying a curable coating solution composed of an uncured curable resin (resin material) and performing a curing process.
  • the first sensor group and the second sensor group are respectively formed on the one side and the opposite side It can be formed.
  • the first base and the second base may be formed by laminating a first base on which the first sensor group is formed and a second base on which the second sensor group is formed. It is also possible to obtain a touch panel sensor in which a first sensor group and a second sensor group are respectively provided on one side and the opposite side of a substrate constituted by a laminate with the substrate.
  • the touch detection method in the touch panel sensor is not particularly limited.
  • a resistive film method that detects a change in resistance of a touched part an electrostatic capacitance method that detects a change in electrostatic capacitance, or an optical sensor that detects a change in light quantity System etc.
  • the cured film-attached touch sensor can be used to construct a touch panel in various devices.
  • Base material 11 One long side 12: The other long side 2, 4: Sensor channel 3, 5: Lead wiring 6, 7: Connecting part 20: First sensor group 40: Second sensor group

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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

La présente invention a pour objet de fournir un capteur de panneau tactile et un procédé de fabrication de celui-ci, permettant d'empêcher une réduction de sensibilité tactile due à l'allongement d'une région efficace de capteur tactile, et également d'éviter l'insertion d'une région qui ne contribue pas à la détection tactile dans la région efficace de capteur tactile. À cet effet, l'invention porte sur un capteur de panneau tactile sur une surface d'un substrat duquel est disposé un premier groupe de capteurs (20) comprenant une pluralité de canaux de capteur (2). Sur la surface opposée dudit substrat est également disposé un second groupe de capteurs (40) comprenant une pluralité de canaux de capteur (4). La pluralité de canaux de capteur (2) et la pluralité de canaux de capteur (4) sont disposés de façon à s'étendre dans des directions de telle sorte qu'elles se croisent ; le premier groupe de capteurs (20) et le second groupe de capteurs (40) forment une région efficace de capteur tactile rectangulaire S ; et l'équation x ≤ y < α est satisfaite, où x est la longueur de capteur du plus long canal de capteur de la pluralité de canaux de capteur (2), y est la longueur de capteur du plus long canal de capteur de la pluralité de canaux de capteur (4), et α est la longueur des côtés longs de la région efficace de capteur tactile S.
PCT/JP2017/035738 2017-09-29 2017-09-29 Capteur de panneau tactile et procédé de fabrication de capteur de panneau tactile WO2019064595A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2017/035738 WO2019064595A1 (fr) 2017-09-29 2017-09-29 Capteur de panneau tactile et procédé de fabrication de capteur de panneau tactile
KR1020207008634A KR20200044081A (ko) 2017-09-29 2017-09-29 터치 패널 센서 및 터치 패널 센서의 제조 방법
JP2019544192A JPWO2019064595A1 (ja) 2017-09-29 2017-09-29 タッチパネルセンサー及びタッチパネルセンサーの製造方法
CN201780095135.2A CN111133405A (zh) 2017-09-29 2017-09-29 触摸面板传感器以及触摸面板传感器的制造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/035738 WO2019064595A1 (fr) 2017-09-29 2017-09-29 Capteur de panneau tactile et procédé de fabrication de capteur de panneau tactile

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WO2019064595A1 true WO2019064595A1 (fr) 2019-04-04

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JP7389188B2 (ja) 2018-03-07 2023-11-29 株式会社ワコム 集積回路

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JP2015032315A (ja) * 2013-08-06 2015-02-16 サムソン エレクトロ−メカニックス カンパニーリミテッド． タッチセンサ
JP2015118604A (ja) * 2013-12-19 2015-06-25 大日本印刷株式会社 タッチパネル装置、タッチパネル装置に組み込まれる保護カバーおよびタッチ位置検出機能付き表示装置
JP2015225383A (ja) * 2014-05-26 2015-12-14 日本航空電子工業株式会社 タッチパネルおよびその製造方法
JP2017004289A (ja) * 2015-06-11 2017-01-05 凸版印刷株式会社 タッチセンサ用電極およびタッチパネル

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EP2426579A4 (fr) * 2009-04-28 2013-01-23 Nec Corp Panneau tactile, procédé de fabrication de panneau tactile, et appareil électronique
JP5923951B2 (ja) * 2011-12-02 2016-05-25 大日本印刷株式会社 タッチパネルセンサ基板およびその基板の製造方法
JP6122672B2 (ja) 2013-03-19 2017-04-26 グンゼ株式会社 投影型静電容量方式タッチパネル用フィルムの製造方法
CN103500042B (zh) * 2013-09-30 2017-04-05 合肥京东方光电科技有限公司 一种光触控屏以及显示装置
JP6348874B2 (ja) 2015-05-19 2018-06-27 富士フイルム株式会社 タッチセンサパネル
KR102377733B1 (ko) * 2015-06-19 2022-03-24 주식회사 엘지화학 터치 패널용 전도성 필름, 그리고 이를 포함하는 터치 패널 및 표시 장치

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JP2015032315A (ja) * 2013-08-06 2015-02-16 サムソン エレクトロ−メカニックス カンパニーリミテッド． タッチセンサ
JP2015118604A (ja) * 2013-12-19 2015-06-25 大日本印刷株式会社 タッチパネル装置、タッチパネル装置に組み込まれる保護カバーおよびタッチ位置検出機能付き表示装置
JP2015225383A (ja) * 2014-05-26 2015-12-14 日本航空電子工業株式会社 タッチパネルおよびその製造方法
JP2017004289A (ja) * 2015-06-11 2017-01-05 凸版印刷株式会社 タッチセンサ用電極およびタッチパネル

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7389188B2 (ja) 2018-03-07 2023-11-29 株式会社ワコム 集積回路

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