WO2019215929A1 - Procédé de fabrication de film de capteur tactile et intermédiaire de film de capteur tactile - Google Patents

Procédé de fabrication de film de capteur tactile et intermédiaire de film de capteur tactile Download PDF

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Publication number
WO2019215929A1
WO2019215929A1 PCT/JP2018/018411 JP2018018411W WO2019215929A1 WO 2019215929 A1 WO2019215929 A1 WO 2019215929A1 JP 2018018411 W JP2018018411 W JP 2018018411W WO 2019215929 A1 WO2019215929 A1 WO 2019215929A1
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WO
WIPO (PCT)
Prior art keywords
film
connection
touch sensor
long
sensor
Prior art date
Application number
PCT/JP2018/018411
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English (en)
Japanese (ja)
Inventor
直人 新妻
大屋　秀信
正好 山内
牛久　正幸
星野　秀樹
小俣　猛憲
一歩 浦山
亮 青山
Original Assignee
コニカミノルタ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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/JP2018/018411 priority Critical patent/WO2019215929A1/fr
Priority to JP2020517748A priority patent/JPWO2019215929A1/ja
Publication of WO2019215929A1 publication Critical patent/WO2019215929A1/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
    • 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

Definitions

  • the present invention relates to a touch sensor film manufacturing method and a touch sensor film intermediate, and more specifically, a touch sensor film manufacturing method that can protect a sensor channel with a protective film and can manufacture the touch sensor film by a roll-to-roll method, and The present invention relates to a touch sensor film intermediate.
  • Patent Documents 1 and 2 A technique for protecting a sensor channel on a film with a resin coating when manufacturing a touch sensor film has been proposed (Patent Documents 1 and 2).
  • an object of the present invention is to provide a touch sensor film manufacturing method and a touch sensor film intermediate that can protect a sensor channel with a protective film and that can manufacture a touch sensor film by a roll-to-roll method.
  • a plurality of sensor channels having one end side connected to the plurality of sensor channels, and the other end side of the plurality of lead wires.
  • a patterning step for forming a connection site for electrical connection Next, a laminating step of laminating a protective film on the long film, Next, a connection step of electrically connecting the external connection component to the connection site, At least from the patterning step to the laminating step is performed by a roll-to-roll method, In the patterning step, the connection part is formed on the long side of the long film, The method for manufacturing a touch sensor film, wherein in the laminating step, the plurality of sensor channels and the plurality of lead wires are covered, and the protective film is laminated so as not to cover the connection portion.
  • a plurality of sensor channels Provided on at least one surface of the long film, a plurality of sensor channels, a plurality of lead wires having one end side connected to the plurality of sensor channels, and the other end side of the plurality of lead wires.
  • a connection part for electrical connection is provided,
  • the connection site is arranged on the long side of the long film,
  • the touch sensor film intermediate body in which a protective film is bonded so as to cover the plurality of sensor channels and the plurality of lead wires and not to cover the connection portion. 6). 6.
  • a plurality of sensor channels Provided on at least one surface of the long film, a plurality of sensor channels, a plurality of lead wires having one end side connected to the plurality of sensor channels, and the other end side of the plurality of lead wires.
  • a connection part for electrical connection is provided,
  • a peelable film is affixed to the connection site,
  • 13. 13 The touch sensor film intermediate according to 6 or 12, wherein the peelable film has an adhesive force of 0.1 N / 10 mm or more and 1.5 N / 10 mm or less.
  • a touch sensor film manufacturing method and a touch sensor film intermediate that can protect a sensor channel with a protective film and that can manufacture a touch sensor film by a roll-to-roll method.
  • part formed in a long film The figure explaining 1st Embodiment of 1st invention of the manufacturing method of a touch sensor film.
  • the figure explaining the usage example of a peelable film The figure explaining 2nd Embodiment of 1st invention of the manufacturing method of a touch sensor film.
  • the figure explaining 1st Embodiment of 2nd invention of the manufacturing method of a touch sensor film The figure explaining 1st Embodiment of 2nd invention of the manufacturing method of a touch sensor film The figure explaining an example of peeling of a peelable film
  • the figure explaining 2nd Embodiment of 2nd invention of the manufacturing method of a touch sensor film The figure explaining 2nd Embodiment of 2nd invention of the manufacturing method of a touch sensor film.
  • the figure explaining 3rd Embodiment of 2nd invention of the manufacturing method of a touch sensor film The figure explaining an example of the formation method of an electroconductive thin wire
  • the figure explaining the 1st aspect of mesh pattern formation The figure explaining the 2nd aspect of mesh pattern formation
  • 1st invention 1st invention of the manufacturing method of a touch sensor film is a plurality of sensor channels on one side of the long film, and one end side is connected to the plurality of sensor channels.
  • a patterning step for forming a plurality of lead wires and a connection portion provided on the other end side of the plurality of lead wires for electrically connecting external connection parts, and then protecting on the long film A laminating step of laminating a film, and then a connecting step of electrically connecting the external connecting component to the connecting portion.
  • at least the patterning process to the laminating process is performed by a roll-to-roll method.
  • the connection part is formed on the long side of the long film.
  • the protective film is laminated so as to cover the plurality of lead wires and the plurality of sensor channels and not to cover the connection portion.
  • the sensor channel can be protected by the protective film, and the effect that the touch sensor film can be manufactured by the roll-to-roll method is obtained. This will be described in detail below with reference to the drawings.
  • FIG. 1 (a), (b) and (c) all show a state in which the long film 1 is viewed from the same direction
  • FIG. 1 (a) shows one surface of the long film 1 ( 1 (b) shows the configuration of the other side (also called the back side) of the long film 1
  • FIG. 1 (c) shows the configuration of both sides of the long film 1. The configuration is shown at the same time.
  • a plurality of sensor channels 2 extending in the longitudinal direction of the long film 1 are arranged in parallel in the width direction of the long film 1 on the surface of the long film 1.
  • a surface sensor pattern portion S is formed by the plurality of sensor channels 2.
  • the plurality of lead wires 3 are provided corresponding to the plurality of sensor channels 2. One end side of the lead wiring 3 is connected to the sensor channel 2. The other end side of the lead wiring 3 is connected to the connection site 4.
  • connection part 4 is a part for electrically connecting external connection parts later.
  • the connection part 4 is formed on the long side of the long film 1.
  • a plurality of sensor channels 2 extending in the width direction of the long film 1 are juxtaposed in the longitudinal direction of the long film 1 on the back surface of the long film 1.
  • the plurality of sensor channels 2 form a sensor pattern portion S on the back surface.
  • the plurality of lead wires 3 are provided corresponding to the plurality of sensor channels 2. One end side of the lead wiring 3 is connected to the sensor channel 2. The other end side of the lead wiring 3 is connected to the connection site 4.
  • connection part 4 is a part for electrically connecting external connection parts later.
  • the connection part 4 is formed on the long side of the long film 1.
  • connection part 4 on the back surface is formed on the long side of the long film 1 so as to be adjacent to the connection part 4 on the front surface.
  • a touch sensor film capable of detecting a touch position in an XY coordinate system by superimposing a plurality of sensor channels 2 on the front surface and a plurality of sensor channels 2 on the back surface. Can be configured.
  • the position detection method of the touch sensor film is not particularly limited, and examples thereof include a resistance film method, a capacitance method, and an optical sensor method.
  • connection part 4 External connection components (not shown in FIG. 1) such as FPC (Flexible Printed Circuit) or FFC (Flexible Flat Cable) can be connected to the connection part 4.
  • FPC Flexible Printed Circuit
  • FFC Flexible Flat Cable
  • the sensor channel 2 can be electrically connected to a drive substrate including an unillustrated integrated circuit (IC) for controlling the touch sensor via an external connection component.
  • IC integrated circuit
  • a plurality of sensor channels 2, a plurality of lead-out wirings 3, and connection sites 4 are formed on both sides of the long film 1 (patterning step).
  • a plurality of sets each including the sensor channel 2, the lead-out wiring 3, and the connection portion 4 similar to those shown in FIG. 1 are formed in the longitudinal direction of the long film 1. These sets are later cut individually and each constitutes a touch sensor film.
  • the patterning method of the sensor channel 2, the lead-out wiring 3, and the connection portion 4 is not particularly limited as long as they can be formed of a conductor, and for example, a printing method or the like can be used.
  • connection part 4 is formed on the long side of the long film 1.
  • a protective film 5 is laminated on the long film 1 (lamination step).
  • the plurality of sensor channels 2 and the plurality of lead wires 3 are covered, and the protective film 5 is laminated so as not to cover the connection portion 4.
  • the protective film 5 is provided on both sides of the long film 1.
  • At least from the patterning step to the laminating step is performed by a roll-to-roll method.
  • connection component 6 is electrically connected to the connection site 4 (connection process).
  • a set constituted by the sensor channel 2, the lead-out wiring 3, and the connection portion 4 can be individually cut out to produce a plurality of touch sensor films.
  • the sensor channel 2 can be protected by the protective film 5, and the effect that the touch sensor film can be manufactured by the roll-to-roll method is obtained. This point will be described in detail below.
  • the protective film 5 can be suitably bonded to a large area touch sensor film by using a roll-to-roll laminating process.
  • connection process for attaching the external connection component 6 to the connection site 4 is performed after the laminating process. It will not be a hindrance to transportation. Thereby, since conveyance accuracy improves and the positional accuracy at the time of a process also improves, a high quality touch sensor film is obtained. Further, in the connection step, the external connection component 6 can be attached to the connection portion 4 exposed from the protective film 5, thereby enabling electrical connection.
  • the protective film can be formed thinly and uniformly compared to the prior art for forming a protective layer composed of a resin coating film, and the physical strength can be increased. Therefore, it is not necessary to enlarge the manufacturing apparatus.
  • the covering range by a protective film can be set with high precision by the setting of the dimension and lamination position of a protective film. Thereby, the connection site
  • connection part protective film (not shown) so as to cover the external connection component and the connection site after the connection step. Thereby, an external connection component and a connection site
  • the size of each touch sensor film cut out from the long film 1 is not particularly limited, but the touch sensor film may have a sensing effective area corresponding to, for example, about 60 inches.
  • FIG. 4 is a diagram for explaining each process constituting the second embodiment.
  • a plurality of sensor channels 2, a plurality of lead-out wirings 3, and connection sites 4 are formed on both sides of the long film 1 (patterning step).
  • a plurality of sets constituted by the sensor channel 2, the lead-out wiring 3 and the connection portion 4 are formed in the longitudinal direction of the long film 1, and a plurality (two in the illustrated example) are also formed in the width direction. Yes. Thereby, two rows of sets arranged continuously along the longitudinal direction of the long film 1 are formed.
  • connection site 4 of each set constituting one row is formed on one long side of the long film 1, and the connection site 4 of each set constituting the other row is the other side of the long film 1. It is formed on the long side.
  • a protective film 5 is laminated on the long film 1 (lamination step).
  • the protective film 5 is laminated so as to cover the plurality of sensor channels 2 and the plurality of lead wires 3 and not to cover the connection part 4 on one long side and the other long side of the long film 1. .
  • the protective film 5 is provided on both sides of the long film 1.
  • At least from the patterning step to the laminating step is performed by a roll-to-roll method.
  • connection component 6 is electrically connected to the connection site 4 (connection process).
  • a set constituted by the sensor channel 2, the lead-out wiring 3, and the connection portion 4 can be individually cut out to produce a plurality of touch sensor films.
  • a peelable film 7 (not shown in FIG. 2) can be provided on the connection site 4 as in the first embodiment.
  • the size of each touch sensor film cut out from the long film 1 is not particularly limited, but the touch sensor film may have a sensing effective area corresponding to, for example, about 20 inches. According to the second embodiment, more touch sensor films can be manufactured from the long film 1 than in the first embodiment.
  • connection parts 4 are combined in one place for each set constituted by the sensor channel 2, the lead-out wiring 3, and the connection part 4 is shown, but the present invention is not limited to this.
  • part 4 is put together in several places for every said set.
  • FIG. 5 is a diagram for explaining each process constituting the third embodiment.
  • a plurality of sensor channels 2, a plurality of lead-out wirings 3, and connection sites 4 are formed on both sides of the long film 1 (patterning step).
  • the sensor pattern portion S formed by the plurality of sensor channels 2 is formed longer in the longitudinal direction of the long film 1 than in the first embodiment or the second embodiment.
  • connection sites 4 are grouped into a plurality of locations (2 locations in the illustrated example) for each set constituted by the sensor channel 2, the lead-out wiring 3, and the connection sites 4.
  • These two connection parts 4 are long films on one side (left side in the figure) and the other side (right side in the figure) as viewed from the longitudinal center of the long film 1 in the sensor pattern portion S. 1 is formed on the long side.
  • the sensor channel 2 formed on the surface of the long film 1 and extending in the longitudinal direction of the long film 1 is connected to the lead-out wiring 3 not only at one end side in the longitudinal direction but also at the other end side. Therefore, even if the sensor channel 2 is formed long, the influence on the sensor sensitivity due to the electrical resistance of the sensor channel 2 itself is reduced, and the sensor sensitivity can be improved.
  • the lead-out wiring 3 connected to one end side of the sensor channel 2 is connected to the connection portion 4 on one side when viewed from the center in the longitudinal direction of the long film 1 and is connected to the other end side of the sensor channel 2.
  • 3 is connected to the connection part 4 on the other side as viewed from the center.
  • a protective film 5 is laminated on the long film 1 (laminating step).
  • the protective film 5 is laminated so as not to cover the connection portions 4 gathered in two places.
  • the protective film 5 is provided on both sides of the long film 1.
  • At least from the patterning step to the laminating step is performed by a roll-to-roll method.
  • connection component 6 is electrically connected to the connection site 4 (connection process).
  • a set constituted by the sensor channel 2, the lead-out wiring 3, and the connection portion 4 can be individually cut out to produce a plurality of touch sensor films.
  • a peelable film 7 (not shown in FIG. 5) can be provided on the connection portion 4 as in the first embodiment.
  • the size of each touch sensor film cut out from the long film 1 is not particularly limited, but the touch sensor film may have a sensing effective area corresponding to, for example, about 1200 mm ⁇ 3600 mm. According to the third embodiment, a touch sensor film having a larger area can be manufactured as compared with the first embodiment and the second embodiment.
  • at least the patterning process to the laminating process is performed by a roll-to-roll method.
  • a peelable film is attached to the connection site, and in the laminating step, the plurality of lead wires, the plurality of sensor channels, and the connection site on the connection site
  • the protective film is laminated so as to cover the peelable film, and before the connecting step, the peelable film is peeled off so as to expose the connection site, and the peelable film and the peelable film are formed.
  • the protective film is cut off. Thereby, the sensor channel can be protected by the protective film, and the effect that the touch sensor film can be manufactured by the roll-to-roll method is obtained. This will be described in more detail below with reference to the drawings.
  • FIG.6 and FIG.7 is a figure explaining each process which comprises 1st Embodiment.
  • connection portions 4 are formed on both sides of the long film 1 (patterning step).
  • a plurality of sets constituted by the sensor channel 2, the lead-out wiring 3 and the connection part 4 are formed in the longitudinal direction of the long film 1. These sets are later cut individually and each constitutes a touch sensor film.
  • connection sites 4 are grouped at a plurality of locations (2 locations in the illustrated example). These two connection sites 4 are formed on each of the long side of the long film 1 and the center side of the long film.
  • a peelable film 7 is pasted on the connection site 4 as shown in FIG.
  • the peelable film 7 has a tape shape.
  • the peelable film 7 that covers the connection part 4 on the long side of the long film 1 extends in the longitudinal direction of the long film 1 and is disposed on the long side of the long film 1 in other sets. A plurality of connecting portions 4 are also covered. Thus, it is efficient and preferable to cover the plurality of connection portions 4 with a single peelable film 7.
  • the peelable film 7 covering the connection portion 4 on the center side of the long film extends in the width direction of the long film 1 between sets adjacent to each other in the longitudinal direction of the long film.
  • a protective film is applied on the long film 1 so as to cover the plurality of sensor channels 2, the plurality of lead wires 3, and the peelable film 7 on the connection site 4. Lamination (lamination process).
  • the protective film 5 is provided on both sides of the long film 1.
  • the peelable film 7 is peeled off so that the connection part 4 is exposed, and the peelable film 7 and the protective film 5 on the peelable film 7 are cut off.
  • FIG. 8 corresponding to the cross-sectional view taken along the line vii-vii in FIG.
  • either a method of setting the cutting position C1 at the end of the peelable film 7 or a method of setting the cut position C1 within the surface of the peelable film 7 may be used.
  • the method of setting in the surface of the peelable film 7 is preferable. Thereby, even if the peelable film 7 is cut and the cutting position C1 is slightly shifted, the peelable film 7 can be reliably exposed to the cut surface.
  • the peelable film 7 exposed on the cut surface is rolled up and peeled off from the long film 1 to expose the connection portion 4.
  • the method of peeling the peelable film 7 is not particularly limited, it is preferable to peel it along the forming direction of the lead wiring 3 covered by the peelable film 7 (longitudinal direction of the lead wiring 3). Thereby, compared with the case where it peels along the width direction of the extraction wiring 3, it can prevent that the extraction wiring 3 and the connection site
  • the peelable film 7 and the protective film 5 on the peelable film 7 are further cut at the cutting position C2 and removed.
  • connection process the external connection component 6 is electrically connected to the connection site 4 (connection process).
  • a set constituted by the sensor channel 2, the lead-out wiring 3, and the connection part 4 can be cut out individually to produce a plurality of touch sensor films.
  • the sensor channel 2 can be protected by the protective film 5 and the effect that the touch sensor film can be manufactured by the roll-to-roll method can be obtained.
  • connection part 4 can be exposed from the protective film 5 regardless of the position of the connection part 4 on the long film 1.
  • the effect of increasing the degree of freedom of the arrangement of the connection sites is obtained.
  • the size of each touch sensor film cut out from the long film 1 is not particularly limited, but the touch sensor film may have a sensing effective area corresponding to, for example, about 60 inches.
  • FIG. 9 and FIG. 10 are diagrams for explaining each process constituting the second embodiment.
  • a plurality of sensor channels 2, a plurality of lead-out wirings 3, and connection sites 4 are formed on both sides of the long film 1 (patterning step).
  • a plurality of sets constituted by the sensor channel 2, the lead-out wiring 3 and the connection portion 4 are formed in the longitudinal direction of the long film 1, and a plurality (two in the illustrated example) are also formed in the width direction. Yes. Thereby, two rows of sets arranged continuously along the longitudinal direction of the long film 1 are formed.
  • connection part 4 connected to the lead wire 3 extending from the sensor channel 2 extending in the longitudinal direction of the long film 1 provided on the surface of the long film 1 is connected to the long film 1 as viewed from the set. It is arranged on one side in the longitudinal direction.
  • connection site 4 connected to the lead wire 3 extending from the sensor channel 2 extending in the width direction of the long film 1 provided on the back surface of the long film 1 is on the center side of the long film 1 when viewed from the set. Be placed.
  • a peelable film 7 is pasted on the connection site 4 as shown in FIG.
  • the peelable film 7 that covers the connection portion 4 on the center side of the long film 1 extends in the longitudinal direction of the long film 1 and includes a plurality of other sets (including sets belonging to other rows). 2 also covers a plurality of connection sites 4 arranged on the center side of the long film 1. Thus, it is efficient and preferable to cover the plurality of connection portions 4 with a single peelable film 7.
  • a protective film is applied on the long film 1 so as to cover the plurality of sensor channels 2, the plurality of lead wires 3, and the peelable film 7 on the connection site 4. Lamination (lamination process).
  • the protective film 5 is provided on both sides of the long film 1.
  • the peelable film 7 is peeled off so that the connection part 4 is exposed, and the peelable film 7 and the protective film 5 on the peelable film 7 are cut off. About this, it can carry out similarly to 1st Embodiment.
  • connection component 6 is electrically connected to the connection site 4 (connection process).
  • a set constituted by the sensor channel 2, the lead-out wiring 3, and the connection portion 4 can be individually cut out to produce a plurality of touch sensor films.
  • the size of each touch sensor film cut out from the long film 1 is not particularly limited, but the touch sensor film may have a sensing effective area corresponding to, for example, about 20 inches. According to the second embodiment, more touch sensor films can be manufactured from the long film 1 than in the first embodiment.
  • part 4 to which the leader wiring 3 extended from the sensor channel extended in the width direction of the long film 1 connected to the back surface of the long film 1 is connected for every set. Although shown in the case of collecting in one place, it is not limited to this. In 3rd Embodiment, it shows about the case where the said connection site
  • FIG. 11 is a diagram for explaining each process constituting the third embodiment.
  • a plurality of sensor channels 2, a plurality of lead-out wirings 3, and connection sites 4 are formed on both sides of the long film 1 (patterning step).
  • the sensor pattern portion S formed by the plurality of sensor channels 2 is formed longer in the longitudinal direction of the long film 1 than in the first embodiment or the second embodiment.
  • connection sites 4 connected to the lead wires 3 extending from the sensor channel extending in the width direction of the long film 1 provided on the back surface of the long film 1 are gathered at a plurality of locations (two locations in the illustrated example).
  • These two connection parts 4 are long films on one side (left side in the figure) and the other side (right side in the figure) as viewed from the longitudinal center of the long film 1 in the sensor pattern portion S. 1 is formed on the long side.
  • the sensor channel 2 formed on the surface of the long film 1 and extending in the longitudinal direction of the long film 1 is connected to the lead-out wiring 3 not only at one end side in the longitudinal direction but also at the other end side. Therefore, even if the sensor channel 2 is formed long, the influence on the sensor sensitivity due to the electrical resistance of the sensor channel 2 itself is reduced, and the sensor sensitivity can be improved.
  • connection portion 4 to which a lead wire 3 extending from one end side of the sensor channel 2 is connected is disposed on one side in the longitudinal direction of the long film 1 when viewed from the set, and a lead wire 3 extending from the other end side of the sensor channel 2 is provided.
  • the connection part 4 to be connected is disposed on the other side in the longitudinal direction of the long film 1 when viewed from the set.
  • These connection parts 4 are arranged on the center side in the width direction of the long film 1.
  • a peelable film 7 is applied to the connection site 4 as shown in FIG.
  • the peelable film 7 covering the connection part 4 on the long side of the long film 1 extends in the longitudinal direction of the long film 1 so as to cover both of the two connection parts 4.
  • a protective film is applied on the long film 1 so as to cover the plurality of sensor channels 2, the plurality of lead-out wirings 3, and the peelable film 7 on the connection site 4. Lamination (lamination process).
  • the protective film 5 is provided on both sides of the long film 1.
  • the peelable film 7 is peeled off so that the connection part 4 is exposed, and the peelable film 7 and the protective film 5 on the peelable film 7 are cut off. About this, it can carry out similarly to 1st Embodiment.
  • connection component 6 is electrically connected to the connection site 4 (connection process).
  • a set constituted by the sensor channel 2, the lead-out wiring 3, and the connection portion 4 can be individually cut out to produce a plurality of touch sensor films.
  • the size of each touch sensor film cut out from the long film 1 is not particularly limited, but the touch sensor film may have a sensing effective area corresponding to, for example, about 1200 mm ⁇ 3600 mm. According to the third embodiment, a touch sensor film having a larger area can be manufactured as compared with the first embodiment and the second embodiment.
  • the material of the long film is not particularly limited.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PEN polyethylene naphthalate
  • cellulosic resin polyethylene Acetylcellulose, cellulose diacetate, cellulose triacetate, etc.
  • polyethylene resin polypropylene resin
  • methacrylic resin methacrylic resin
  • cyclic polyolefin resin polystyrene resin, acrylonitrile- (poly) styrene copolymer (AS resin), acrylonitrile-butadiene- Styrene copolymer (ABS resin)
  • ABS resin acrylonitrile-butadiene- Styrene copolymer
  • ABS resin polyvinyl chloride resin
  • poly (meth) acrylic resin polycarbonate resin
  • polyester resin polyimide resin
  • polyamide resin polyamideimide Fat
  • cycloolefin polymer (COP) resin urethane resins.
  • the long film made of a synthetic resin material may be stretched or unstretched.
  • the thickness of the long film is not particularly limited, and can be, for example, about 1 ⁇ m to 10 cm, and further about 20 ⁇ m to 300 ⁇ m.
  • the long film may be subjected to a surface treatment for changing the surface energy.
  • the long film may have a surface (a surface constituting a base on which a sensor channel or the like is formed) formed of a hard coat layer, an antireflection layer, or the like.
  • the long film is processed by a roll-to-roll method at least from the patterning step to the laminating step.
  • the long film can be sequentially supplied to an apparatus for performing a patterning process and an apparatus for executing a laminating process in the process of being unwound from an unwinding roll and wound on the winding roll.
  • the patterning method of the sensor channel, the lead wiring, and the connection site is not particularly limited, and a printing method or the like can be used.
  • the printing method is not particularly limited, and examples thereof include a screen printing method, a relief printing method, an intaglio printing method, an offset printing method, a flexographic printing method, an inkjet method, and the like. Among these, an inkjet method is preferable.
  • the droplet discharge method of the inkjet head in the inkjet method is not particularly limited, and examples thereof include a piezo method and a thermal method.
  • Each of the sensor channels may be composed of a single belt-like solid film, but is preferably composed of a plurality of conductive thin wires.
  • one strip-shaped sensor channel is formed by a mesh pattern in which a plurality of thin conductive wires intersect each other.
  • the conductive thin wires constituting the mesh pattern When forming the conductive thin wires constituting the mesh pattern by the printing method, it is preferable to use the coffee stain phenomenon when drying the ink applied on the long film. Specifically, the conductive material contained in the ink is deposited on both edges along the longitudinal direction of the line segment by utilizing the internal flow of the ink applied as a line segment on the long film. It is preferable to form a pair of conductive thin wires having a width finer than the width of application of the ink. This will be described with reference to FIG.
  • a line segment (hereinafter also referred to as a line-like liquid) 20 made of ink containing a conductive material is applied on the long film 1.
  • a conductive thin wire 21 can be formed as shown in FIG. 13B by selectively depositing a conductive material on the edge of the line liquid 20 in the course of drying the line liquid 20.
  • a pair of conductive thin wires 21 and 21 are formed by selectively depositing a conductive material on both edges along the longitudinal direction of the line-shaped liquid 20.
  • the pair of conductive thin wires 21 and 21 can be formed in parallel to each other.
  • the line width of the conductive thin wire 21 is narrower than the line width of the line-shaped liquid 20, and can be, for example, 20 ⁇ m or less, 15 ⁇ m or less, 10 ⁇ m or less, 7 ⁇ m or less, and further 5 ⁇ m or less.
  • the lower limit of the line width of the conductive thin wire 21 is not particularly limited, but can be set to, for example, 1 ⁇ m or more from the viewpoint of providing stable conductivity.
  • Various patterns can be formed by one or a plurality of conductive thin wires 21. As such a pattern, the above-described mesh pattern can be formed. Below, the 1st aspect of mesh pattern formation is demonstrated with reference to FIG. 14, and the 2nd aspect of mesh pattern formation is then demonstrated with reference to FIG.
  • a plurality of line-shaped liquids 20 arranged in parallel at predetermined intervals are formed on the long film 1.
  • a pair of conductive thin wires 21, 21 are formed from each line-shaped liquid 20 using the coffee stain phenomenon when the line-shaped liquid 20 is dried.
  • a pair of conductive thin wires 21, 21 are formed from each line-shaped liquid 20 using the coffee stain phenomenon when the line-shaped liquid 20 is dried.
  • a mesh pattern can be formed as described above.
  • the conductive thin wires 21 intersecting with each other are inclined with respect to the longitudinal direction and the width direction of the long film, but may be formed along the longitudinal direction and the width direction.
  • the line-like liquid 20 and the conductive thin wire 21 are straight, but the present invention is not limited to this.
  • the shape of the line-like liquid 20 and the conductive thin wire 21 may be, for example, a wavy line or a broken line (zigzag line).
  • a thin line unit composed of a pair of conductive thin wires 21 and 21 is formed from each line-shaped liquid 20 by utilizing the coffee stain phenomenon when the line-shaped liquid 20 is dried.
  • the conductive thin wires 21, 21 are formed concentrically, with one (outside conductive thin wire 21) including the other (inside conductive thin wire 21) inside.
  • the conductive thin wires 21 and 21 each have a quadrangular shape corresponding to the shape of both edges (inner peripheral edge and outer peripheral edge) of the line-shaped liquid 20.
  • a line-shaped liquid 20 that forms a plurality of quadrilaterals arranged in parallel at predetermined intervals in the longitudinal direction and the width direction of the long film 1 is formed on the long film 1.
  • the line-shaped liquid 20 which comprises a some square is formed in the position pinched
  • the line-shaped liquid 20 having a quadrangular shape is arranged so as to be in contact with the outer conductive thin wire 21 of the thin wire units adjacent thereto, but not in contact with 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 so as to be isolated.
  • the pattern shown in FIG. 15D may be used as a mesh pattern as it is.
  • the inner conductive thin wires 21 in the pattern shown in FIG. 15D may be removed to form a mesh pattern (FIG. 15E) composed of the outer conductive thin wires 21.
  • a mesh pattern FIG. 15E
  • an effect that the conductive thin wire 21 can be formed with a high degree of freedom is obtained.
  • the method of removing the inner conductive thin wire 21 is not particularly limited, and for example, a method of irradiating energy rays such as laser light or a method of chemically etching can be used.
  • the inner conductive thin wires 21 are disposed so as to be isolated, and can be excluded from the energization path for applying electrolytic plating to the outer conductive thin wires 21. Therefore, while the outer conductive thin wire 21 is subjected to electrolytic plating (while energized), the inner conductive thin wire 21 that is not subjected to electrolytic plating can be removed by dissolution or decomposition with a plating solution. it can.
  • the line-like liquid 20 and the conductive thin wire 21 are rectangular, but it is not limited to this.
  • the shapes of the line-like liquid 20 and the conductive thin wires 21 include closed geometric figures.
  • the closed geometric figure include polygons such as a triangle, a quadrangle, a hexagon, and an octagon.
  • the closed geometric figure may include a curved element such as a circle or an ellipse.
  • the conductive material contained in the ink is not particularly limited, and examples thereof include conductive fine particles and conductive polymers.
  • Examples of the conductive fine particles include metal fine particles and carbon fine particles.
  • the metal constituting the metal fine particle examples include Au, Pt, Ag, Cu, Ni, Cr, Rh, Pd, Zn, Co, Mo, Ru, W, Os, Ir, Fe, Mn, Ge, Sn, Ga, In etc. are mentioned. Among these, Au, Ag, and Cu are preferable, and Ag is particularly preferable.
  • the average particle diameter of the metal fine particles can be, for example, 1 to 100 nm, further 3 to 50 nm.
  • the average particle diameter is a volume average particle diameter, and can be measured by “Zeta Sizer 1000HS” manufactured by Malvern.
  • Examples of the carbon fine particles include graphite fine particles, carbon nanotubes, fullerenes and the like.
  • the conductive polymer is not particularly limited, but a ⁇ -conjugated conductive polymer can be preferably exemplified.
  • 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 further narrowing of the conductive thin wire can be obtained.
  • the solvent used in the ink is not particularly limited, and may include one or more selected from water and organic solvents.
  • the organic solvent include 1,2-hexanediol, 2-methyl-2,4-pentanediol, 1,3-butanediol, 1,4-butanediol, alcohols such as propylene glycol, diethylene glycol monomethyl ether,
  • ethers such as diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, dipropylene glycol monomethyl ether, and dipropylene glycol monoethyl ether.
  • the ink can contain other components such as a surfactant.
  • the surfactant is not particularly limited, and examples thereof include a silicon surfactant.
  • the concentration of the surfactant in the ink can be, for example, 1% by weight or less.
  • the drying method of the ink (line liquid) applied on the long film 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 a long film to a predetermined temperature, a method of forming an airflow on the surface of the long film, or the like may be used alone or in combination. Can do.
  • the airflow can be formed by blowing or sucking using a fan or the like, for example.
  • the conductive thin wire formed on the long film can be post-treated.
  • the post treatment include firing treatment and plating treatment. After performing the baking treatment, a plating treatment may be performed.
  • Examples of the baking treatment include light irradiation treatment and heat treatment.
  • light irradiation treatment 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.
  • the plating treatment examples include electroless plating and electrolytic plating.
  • the conductive thin wire can be selectively plated by utilizing the conductivity of the conductive thin wire.
  • the conductive thin wire may be subjected to a plurality of plating treatments. You may perform the metal-plating process of the multiple times which made the plating metal different.
  • a plurality of metal layers can be stacked on the conductive thin wire by a plurality of plating processes.
  • the plating solution used for electroplating may contain oxidizing agents, such as sodium persulfate, cupric chloride, hydrogen peroxide, etc., for example.
  • oxidizing agents such as sodium persulfate, cupric chloride, hydrogen peroxide, etc.
  • the conductivity of the conductive fine wire can be improved and the plating thickness can be suppressed. This effect is exhibited particularly well when a conductive thin wire formed using the coffee stain phenomenon is targeted.
  • the material of the protective film is not particularly limited.
  • the material of the protective film is not particularly limited.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PEN polyethylene naphthalate
  • COP cycloolefin polymer
  • urethane resins polyethylene terephthalate
  • PEN polyethylene naphthalate
  • COP cycloolefin polymer
  • urethane resins polyethylene terephthalate
  • PEN polyethylene naphthalate
  • cellulose resin polyacetyl cellulose, cellulose diacetate, cellulose triacetate, etc.
  • polyethylene Resin polypropylene resin, methacrylic resin, cyclic polyolefin resin, polystyrene resin, acrylonitrile- (poly) styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyvinyl chloride Resin
  • the protective film made of a synthetic resin material may be stretched or unstretched.
  • the thickness of the protective film is not particularly limited, and can be, for example, about 1 ⁇ m to 10 cm, and further about 20 ⁇ m to 300 ⁇ m.
  • the method for laminating the protective film is not particularly limited as long as the protective film can be laminated so as to cover the region to be protected on the long film.
  • one or more methods selected from a method of heating at least one of the long film and the protective film and a method of pressing the long film and the protective film in the laminating direction can be used.
  • an adhesive layer may be provided on the surface of the protective film oriented on the long film side (also referred to as paste processing).
  • the surface of the long film may be constituted by an adhesive layer.
  • lamination may be performed by melting the adhesive layer by heating.
  • the peelable film used in each embodiment described above preferably has an adhesive strength of 0.1 N / 10 mm or more and 1.5 N / 10 mm or less. Thereby, it is prevented that a connection site
  • connection part to which the lead wire extending from the sensor channel on the surface of the long film is connected is formed on the surface of the long film, and the connection part to which the lead wire extending from the sensor channel on the back surface of the long film is connected.
  • the connection sites may be formed on the surface of the long film by drawing a lead wire extending from the sensor channel on the back surface of the long film to the surface through a through hole penetrating the long film.
  • a plurality of sensor channels, a plurality of lead wires, and a connection portion are formed on both sides of a long film, but the present invention is not limited to this.
  • the plurality of sensor channels, the plurality of lead wires, and the connection site may be formed on at least one surface of the long film. When these are provided only on one surface, the protective film on the other surface can be omitted.
  • the 1st invention of the touch sensor film intermediate body is a plurality of sensor channels on at least one surface of the long film, and a plurality of one end sides connected to the plurality of sensor channels. And a connecting portion provided on the other end side of the plurality of lead wirings for electrically connecting external connection components.
  • the connection part is disposed on the long side of the long film.
  • a protective film is bonded so as to cover the plurality of lead wires and the plurality of sensor channels and not cover the connection portion. Thereby, the sensor channel can be protected by the protective film, and the effect that the touch sensor film can be manufactured by the roll-to-roll method is obtained.
  • the 2nd invention of the touch sensor film intermediate body has a plurality of sensor channels on a surface of at least one side of the long film, and a plurality of lead wires having one end connected to the plurality of sensor channels. Provided on the other end side of the plurality of lead wires, and a connection portion for electrically connecting an external connection component.
  • a peelable film is affixed to the connection site.
  • the protective film is bonded together so that the said several peeling wiring, the said several sensor channel, and the said peelable film on the said connection site

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Abstract

La présente invention a pour objet de fournir un procédé de fabrication de film de capteur tactile et un intermédiaire de film de capteur tactile, le procédé de fabrication de film de capteur tactile permettant de protéger un canal de capteur avec un film de protection et de fabriquer un film de capteur tactile par un système rouleau à rouleau. À cet effet, l'invention porte sur un procédé de fabrication de film de capteur tactile comprenant : une étape de formation de motif consistant à former, sur au moins une surface d'un film allongé, une pluralité de canaux de capteur, une pluralité de fils de sortie dont un côté d'extrémité est connecté à la pluralité de canaux de capteur, et une partie de connexion qui est disposée sur l'autre côté d'extrémité de la pluralité de fils de sortie pour connecter électriquement un composant de connexion externe ; puis une étape de stratification consistant à stratifier un film de protection sur le film allongé ; puis une étape de connexion consistant à connecter électriquement le composant de connexion externe à la partie de connexion. Au moins l'étape de formation de motifs à l'étape de stratification est effectuée à l'aide d'un système rouleau à rouleau. Dans l'étape de formation de motifs, la partie de connexion est formée sur le côté long du film allongé. Dans l'étape de stratification, le film de protection est stratifié de manière à recouvrir la pluralité de canaux de capteur et la pluralité de fils de sortie et de façon à ne pas recouvrir la partie de connexion.
PCT/JP2018/018411 2018-05-11 2018-05-11 Procédé de fabrication de film de capteur tactile et intermédiaire de film de capteur tactile WO2019215929A1 (fr)

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PCT/JP2018/018411 WO2019215929A1 (fr) 2018-05-11 2018-05-11 Procédé de fabrication de film de capteur tactile et intermédiaire de film de capteur tactile
JP2020517748A JPWO2019215929A1 (ja) 2018-05-11 2018-05-11 タッチセンサーフィルムの製造方法及びタッチセンサーフィルム中間体

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Cited By (1)

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KR20220154979A (ko) * 2021-05-14 2022-11-22 일진디스플레이(주) 디지타이저 제조방법

Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2013008354A (ja) * 2011-05-26 2013-01-10 Alps Electric Co Ltd 入力装置及び入力装置の製造方法
JP2016155978A (ja) * 2015-02-26 2016-09-01 富士フイルム株式会社 タッチパネル電極保護膜形成用組成物、転写フィルム、透明積層体、タッチパネル用電極の保護膜及びその形成方法、静電容量型入力装置、並びに、画像表示装置
JP2017228229A (ja) * 2016-06-24 2017-12-28 富士フイルム株式会社 タッチパネル用積層体、タッチパネル用剥離フィルムおよび剥離方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013008354A (ja) * 2011-05-26 2013-01-10 Alps Electric Co Ltd 入力装置及び入力装置の製造方法
JP2016155978A (ja) * 2015-02-26 2016-09-01 富士フイルム株式会社 タッチパネル電極保護膜形成用組成物、転写フィルム、透明積層体、タッチパネル用電極の保護膜及びその形成方法、静電容量型入力装置、並びに、画像表示装置
JP2017228229A (ja) * 2016-06-24 2017-12-28 富士フイルム株式会社 タッチパネル用積層体、タッチパネル用剥離フィルムおよび剥離方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220154979A (ko) * 2021-05-14 2022-11-22 일진디스플레이(주) 디지타이저 제조방법
KR102526117B1 (ko) * 2021-05-14 2023-06-01 일진디스플레이(주) 디지타이저 제조방법

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