WO2019039057A1 - Input device - Google Patents

Input device Download PDF

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Publication number
WO2019039057A1
WO2019039057A1 PCT/JP2018/022898 JP2018022898W WO2019039057A1 WO 2019039057 A1 WO2019039057 A1 WO 2019039057A1 JP 2018022898 W JP2018022898 W JP 2018022898W WO 2019039057 A1 WO2019039057 A1 WO 2019039057A1
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WO
WIPO (PCT)
Prior art keywords
pattern
input device
conductive pattern
decorative
conductive
Prior art date
Application number
PCT/JP2018/022898
Other languages
French (fr)
Japanese (ja)
Inventor
舛本 好史
橋田 淳二
真一 樋口
明紘 武田
志賀 貞一
融 澤田
幸治 塚本
高橋 亨
美幸 佐藤
Original Assignee
アルプスアルパイン株式会社
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.)
Filing date
Publication date
Application filed by アルプスアルパイン株式会社 filed Critical アルプスアルパイン株式会社
Publication of WO2019039057A1 publication Critical patent/WO2019039057A1/en

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Definitions

  • the present invention relates to an input device, and more particularly to an input device provided with a touch sensor that detects a position where a finger or the like has approached.
  • the touch panel which is often used as an input device, includes a touch sensor that detects a position at which a finger or the like approaches a detection area (hereinafter, the approach includes a touch).
  • the approach includes a touch.
  • a drive side electrode and an output side electrode are provided, a drive pulse is applied to the drive side electrode, and a capacitance change due to a finger or the like is detected by the output side electrode doing.
  • a flexible substrate is connected to a panel peripheral portion or the like in order to obtain conduction with a detection electrode. Moreover, in order to make the flexible substrate invisible from the front side of the touch panel or to connect with a circuit on the back side of the panel, the flexible substrate is also pulled out to the back side of the panel.
  • Patent Document 1 discloses an input device having a sensor film provided with a conductive layer, a lead-out portion extended from the sensor film, and a front and back panel.
  • the front panel and the back panel are resin-molded integrally with the sensor film, and at least one of the front panel and the back panel is provided with a support portion for supporting the lead-out portion.
  • Patent Document 2 discloses a method of manufacturing a touch panel in which a decorative film and a sensor film are integrally molded and in-mold molded.
  • the wiring lead-out portion is drawn to the side of the substrate, and is drawn to the back side by a through hole.
  • Patent Documents 3 and 4 a resin portion, a touch sensor embedded in the resin portion, a holding portion embedded in the resin portion, and an external connection connected to the touch sensor and partially fixed to the holding portion
  • a part module comprising a part is disclosed.
  • the lead-out portion of the external connection portion is led from the resin portion in the thickness direction.
  • Patent Document 5 a process of forming a circuit pattern on at least one of the front surface and the back surface on the film substrate having the front surface and the back surface, and using a male mold for the film substrate on which the circuit pattern is formed Forming a film substrate so as to conform to the outer surface of the male mold, and using a mold in contact with the opposite surface of the film substrate on which the circuit pattern is formed with the surface in contact with the male mold. And forming a mold to conform to the mold.
  • Patent Document 6 discloses a touch panel sensor in which a decorative layer is applied by screen printing or the like on the back surface of a panel, then a sensor wiring layer is transferred and formed on the back surface, and pattern formation is performed by exposure and etching.
  • JP, 2016-106314 A JP, 2014-056565, A JP, 2014-035805, A JP, 2014-035806, A JP, 2014-170637, A JP, 2016-031503, A
  • the input device which is a touch panel
  • a step is generated with the thickness of the flexible substrate.
  • the panel of the input device is integrally formed of resin, distortion occurs in the decorated portion due to the step, which causes an influence on the appearance.
  • An object of the present invention is to provide an input device capable of drawing out wiring on the back side of a panel without causing a decrease in detection sensitivity and without impairing the design.
  • one aspect of the present invention is a support base provided with a through hole, and a drawing pattern provided on the support base and conducting to a plurality of electrode parts and a plurality of electrode parts.
  • a sensor unit having the above-mentioned structure, and a decoration unit provided via a resin on the sensor unit and having a decoration layer, wherein the decoration layer is provided from at least a part of the drawing pattern to the top of the through hole
  • a wiring portion for external connection which is conducted and drawn out to the back surface of the support base through the through hole.
  • the first conductive pattern is provided along the decorative layer, and the external connection wiring portion is connected via the first conductive pattern and the conductive connection portion. And the wiring part for external connection is pulled out to the back surface of a support base material through the through-hole provided in the support base material.
  • the first conductive pattern can be formed of a thin film, and even if the first conductive pattern is sandwiched between the sensor portion and the decorative portion, the generation of the step can be suppressed.
  • the sensor unit is disposed on the side of the decorative portion of the support base, a decrease in detection sensitivity can be avoided.
  • the conductive connection portion may be an anisotropic conductive adhesive.
  • the conductive connection portion may also be used for conduction between the lead-out pattern and the first conductive pattern.
  • the external connection wiring portion may be a flexible wiring board.
  • the flexible wiring board can be drawn out to the back surface side of the support base through the through hole, and can be well connected to an external device (circuit) using the flexibility of the flexible wiring board.
  • the external connection wiring portion may be a connector disposed in the through hole.
  • connection with an external device is performed by the connector disposed in the through hole. That is, the connection with the external device (circuit) can be easily performed by the connection with the connector on the back surface side of the support base material.
  • the input device further includes a ground electrode pattern provided along the decorative layer, and a second conductive pattern provided along the decorative layer and electrically connected to the ground electrode pattern, the second conductive pattern being grounded
  • the external connection wiring portion may be provided so as to be electrically connected to the second conductive pattern.
  • the ground electrode pattern serves as an electromagnetic shield. Since this ground electrode pattern is provided in the decorative portion, it is not necessary to provide a separate shield layer.
  • an input device capable of extracting wiring on the back side of the panel without causing a decrease in detection sensitivity.
  • FIG. 7 is an exploded perspective view illustrating another embodiment. It is a schematic diagram which shows the application example of an input device.
  • FIG. 1 is an exploded perspective view illustrating an input device according to the present embodiment.
  • FIG. 2 is a schematic plan view illustrating the sensor unit of the input device according to the embodiment.
  • the input device 1 includes a support base 15, a sensor unit 10 provided on the support base 15, and a decoration in which the sensor unit 10 and the first direction D1 overlap one another.
  • a film (decorated portion) 20 is provided.
  • a surface cover 30 may be provided on the decorative film 20.
  • the input device 1 is, for example, a touch panel.
  • the input device 1 is mounted on a display device 100 such as liquid crystal.
  • the surface cover 30 side of the input device 1 is also referred to as the front side (surface side), and the side opposite to the surface cover 30 is also referred to as the back side (back side).
  • the supporting base 15 is, for example, a molded resin, and is a member for arranging the sensor unit 10.
  • the support base 15 is provided with a through hole 15 h.
  • the through holes 15 h are provided in the peripheral area outside the detection area SA in the support base 15.
  • the sensor unit 10 is, for example, a capacitive touch sensor, and performs position detection based on a change in electrostatic capacitance when a finger or the like approaches the detection area SA.
  • the sensor unit 10 is disposed on the support base 15.
  • the sensor unit 10 includes a first electrode 11 and a second electrode 12 which are translucent electrode units provided in the detection area SA of the support base 15.
  • the first electrode 11 and the second electrode 12 are formed on a base film 110 (see FIG. 4) described later.
  • the base film 110 is a flexible film having translucency such as PET (polyethylene terephtalate), COP (cycloolefin polymer), COC (cyclic olefin copolymer), etc., a rigid translucent plate such as acrylic resin, polycarbonate resin, etc.
  • the sensor film is formed by forming a translucent electrode on the base film 110.
  • the first electrode 11 extends in one direction (for example, the X direction) along the surface of the base film 110
  • the second electrode 12 extends along the surface of the base film 110 in the direction orthogonal to the one direction (for example, Y direction) Extends to The first electrode 11 and the second electrode 12 are insulated from each other.
  • the plurality of first electrodes 11 are disposed at a predetermined pitch in the Y direction
  • the plurality of second electrodes 12 are disposed at a predetermined pitch in the X direction.
  • each of the first electrode 11 and the second electrode 12 has a plurality of island-shaped electrode portions.
  • Each insular electrode portion has, for example, a shape close to a rhombus.
  • the first electrode 11 and the second electrode 12 are provided at positions overlapping with the detection area SA, the first electrode 11 and the second electrode 12 have translucency so as to transmit an image displayed by the display device 100. Therefore, a translucent conductive material (ITO (Indium Tin Oxide), SnO 2 , ZnO, conductive nanomaterial, metal material formed in a mesh shape, etc.) is used for the first electrode 11 and the second electrode 12 .
  • ITO Indium Tin Oxide
  • SnO 2 , ZnO conductive nanomaterial
  • Terminals 155 are provided in the peripheral area outside the detection area SA of the base film 110.
  • the lead-out pattern 150 electrically connected to the first electrode 11 and the second electrode 12 extends to the peripheral area, and is connected to the terminal portion 155.
  • the terminal portion 155 is connected to a first conductive pattern 251 described later.
  • a decorative film 20 is provided on the sensor unit 10 (the side on which the first electrode 11 and the second electrode 12 are formed).
  • the decorative film 20 has a light transmitting base film 21 and a decorative layer 22 provided on the base film 21.
  • the decorative layer 22 is provided in the peripheral area which is the outside of the detection area SA. By covering the peripheral area with the decorative layer 22, the lead-out pattern 150 and the terminal portion 155 can be prevented from being visually recognized from the outside. Further, the decorative layer 22 can constitute a part of the appearance design.
  • the decorative film 20 is attached on the sensor unit 10 by a resin 50 (see FIG. 4) described later.
  • the resin 50 is an adhesive layer, and preferably a translucent adhesive such as OCA (Optical Clear Adhesive) is used.
  • OCA Optical Clear Adhesive
  • the lower side of the decorative layer 22 may not have translucency, and a colored resin 50 may be used.
  • a surface cover 30 is provided on the decorative film 20.
  • the surface cover 30 is a thin plate-like member having translucency of glass or plastic.
  • the configuration in which panel-like and film-like members such as the support base 15, the sensor unit 10, the decorative film 20, and the surface cover 30 are laminated in the first direction D1 is illustrated.
  • the member obtained by laminating the part 10 and the decorative film 20 is integrally molded with a resin (IMD: In-mold Decoration, IML: In-Mold Laminating, TOM: Three dimension Overlay Method, etc.)
  • IMD In-mold Decoration
  • IML In-Mold Laminating
  • TOM Three dimension Overlay Method, etc.
  • the first conductive pattern 251 is provided along the decoration layer 22 of the decoration film 20.
  • the first conductive pattern 251 is a conductive pattern electrically connected to the first electrode 11 or the second electrode 12 of the sensor unit 10.
  • the first conductive pattern 251 is disposed from the position of the decorative layer 22 to above the through hole 15 h.
  • FIG. 3 is a schematic plan view illustrating the decorative film of the input device according to the embodiment.
  • the top view which looked at the decoration film 20 from the back surface (surface facing the sensor part 10) is shown by FIG.
  • the decoration layer 22 only shows the code
  • FIG. 4 is a schematic cross-sectional view of part of the input device according to the present embodiment.
  • a plurality of first conductive patterns 251 are provided in the peripheral area outside the detection area SA.
  • the first conductive pattern 251 is provided on the sensor unit 10 side of the decorative layer 22.
  • the end (one end 251a) proximal to the detection area SA of each of the plurality of first conductive patterns 251 is a position where it faces the terminal portion 155 of the sensor unit 10 when the decorative film 20 is superimposed on the sensor unit 10. It becomes.
  • the end (the other end 251 b) distal to the detection area SA of each of the plurality of first conductive patterns 251 is located above the through hole 15 h of the support base 15.
  • a conductive connection portion 40 is provided between the first conductive pattern 251 of the decorative film 20 facing each other and the terminal portion 155 of the sensor portion 10 in a state in which the sensor portion 10 and the decorative film 20 are superimposed.
  • As the conductive connection portion 40 an anisotropic conductive adhesive or the like is used.
  • the conductive connection portion 40 electrically connects the first conductive pattern 251 and the terminal portion 155.
  • the external connection wiring portion 70 is provided in the through hole 15 h of the support base 15.
  • a flexible wiring board 710 is used for the external connection wiring portion 70.
  • the flexible wiring substrate 710 includes a flexible base material 711 such as polyimide, a wiring pattern 712 formed on the base material 711, and a protective layer 713 covering the wiring pattern 712.
  • the flexible wiring board 710 is disposed in the through hole 15 h so as to bend its tip.
  • the wiring pattern 712 in the portion bent in the through hole 15 h and the first conductive pattern 251 extended to the top of the through hole 15 h face each other and are connected by the conductive connection portion 40.
  • the first conductive pattern 251 and the wiring pattern 712 of the flexible wiring substrate 710 are electrically connected, and the wiring pattern 712 is drawn to the back surface side of the support base 15 by the flexible wiring substrate 710.
  • the flexible wiring board 710 drawn to the back surface side of the support base 15 is used as a drawing member for connecting to an external device (circuit).
  • the first conductive pattern 251 is formed on the decorative layer 22 by screen printing or the like, it can be formed very thinly.
  • the thickness of the first conductive pattern 251 is 4 ⁇ m. For this reason, even if the first conductive pattern 251 is sandwiched between the sensor unit 10 and the decorative film 20, almost no step due to the thickness of the first conductive pattern 251 occurs.
  • FIG. 5 is a schematic cross-sectional view showing a reference example.
  • the flexible wiring board 80 is used for connection with the lead-out pattern 150.
  • the flexible wiring substrate 80 is sandwiched between the sensor unit 10 and the decorative film 20.
  • the conductive pattern 82 of the flexible wiring substrate 80 and the lead-out pattern 150 of the sensor unit 10 are connected by the conductive connection portion 40 at a position sandwiching the flexible wiring substrate 80.
  • the flexible wiring substrate 80 has a configuration in which a conductive pattern 82 and a cover film 83 covering the conductive pattern 82 are provided on a flexible base 81 such as polyimide.
  • the thickness of the flexible substrate 81 is about 20 ⁇ m, and the total thickness of the flexible wiring substrate 80 is about 65 ⁇ m.
  • a step d is generated in the decorative film 20 due to the influence of the thickness. Such a step d causes distortion in the decorative film 20 and affects the appearance.
  • the input device 1 no step is generated in the decorative film 20 because the base having a thickness such as the flexible wiring substrate 80 is not held. Since the first conductive pattern 251 provided along the decorative layer 22 and the flexible wiring board 710 drawn out from the through hole 15 h to the back surface side of the support base 15 are used as the lead-out wiring members to the outside, a decorative film Almost no level difference will occur at 20. In particular, even when the surface cover 30 or the like of the input device 1 is integrally formed with the sensor unit 10 and the decorative film 20, no distortion due to a step is generated in the decorative film 20, which affects the designability Absent.
  • the sensor unit 10 is disposed on the side of the support film 15 on the decorative film 20 side, a decrease in detection sensitivity is avoided as compared to the case where the sensor unit 10 is provided near the back surface side or back surface of the support substrate 15 can do.
  • the ground electrode pattern 60 may be provided along the decorative layer 22.
  • the ground electrode pattern 60 is provided, for example, at a position overlapping the decorative layer 22 in the peripheral area of the detection area SA.
  • the ground electrode pattern 60 has, for example, a mesh-like pattern.
  • the decorative film 20 is provided with a second conductive pattern 252, and the second conductive pattern 252 and the ground electrode pattern 60 are electrically connected.
  • the second conductive pattern 252 is conductively connected to the wiring pattern 712 of the flexible wiring board 710 disposed in the through hole 15 h by the conductive connection portion 40.
  • the second conductive pattern 252 is at the ground potential.
  • the ground electrode pattern 60 serves as an electromagnetic shield. Since the ground electrode pattern 60 is provided on the decorative film 20, it is not necessary to provide a separate shield layer.
  • FIG. 6 is a schematic plan view illustrating the resin 50. As shown in FIG. 6
  • the resin 50 is provided between the sensor unit 10 and the decorative film 20 and serves as an adhesive layer for bonding the two together.
  • the resin 50 is in the form of a sheet, and the sensor unit 10 and the decorative film 20 are bonded together by heating and pressing the resin 50.
  • a hole 50 h is provided in the resin 50 in the form of a sheet before being heated and pressurized.
  • the holes 50h are provided, for example, in a rectangular shape.
  • the sheet-like resin 50 is placed on the sensor unit 10.
  • the terminal portion 155 of the lead-out pattern 150 is disposed inside the hole 50 h.
  • an anisotropic conductive adhesive which is the conductive connection portion 40, is applied to the terminal portion 155 in the hole 50h.
  • the decorative film 20 is placed on the resin 50 in this state. Thereby, the one end portion 251 a of the first conductive pattern 251 of the decorative film 20 and the terminal portion 155 are connected by the conductive connection portion 40 in the hole 50 h.
  • the other end 251 b of the first conductive pattern 251 is located above the hole 50 h.
  • a translucent resin can be used in the non-formation region of the decoration layer 22 of the decoration film 20, and a coloring resin can be used in the formation region of the decoration layer 22.
  • a translucent resin or a colored resin may be used as the resin 50.
  • the flexible wiring board 710 is inserted into the through hole 15 h, and the wiring pattern 712 of the flexible wiring board 710 and the other end 251 b of the first conductive pattern 251 are connected by the conductive connection portion 40.
  • the flexible wiring substrate 710 is previously connected to the other end 251 b of the first conductive pattern 251 of the decorative film 20 before the sensor unit 10 and the decorative film 20 are attached to each other, and When bonding the decorative film 20 with the resin 50, the end portion of the flexible wiring substrate 710 may be passed through the through hole 15h, and then bonding may be performed.
  • FIG. 7 is a schematic cross-sectional view illustrating another external connection wiring portion.
  • a connector 720 is used for the external connection wiring portion 70 shown in FIG.
  • the connector 720 is disposed in the through hole 15 h of the support base 15.
  • the terminal 721 of the connector 720 is connected to the first conductive pattern 251 and the second conductive pattern 252 in the through hole 15 h by the conductive connection portion 40.
  • the connector 720 may be inserted into the through hole 15 h after forming the support base 15, or may be incorporated by insert molding when the support base 15 is formed.
  • FIG. 8 is an exploded perspective view illustrating another embodiment.
  • the decorative layer 22 is provided on substantially the entire surface of the decorative film 20.
  • a button display unit 221 is provided on part of the decorative layer 22.
  • the button display portion 221 may be a portion where the light transmittance of the decorative layer 22 is adjusted, or may be a portion where color and shape (pattern) are different from those of other portions, or where the decorative layer 22 is not provided. It may be a light (for example, transparent) part.
  • At least one of the display device 100 and the light source 200 is provided on the opposite side of the sensor unit 10 to the decorative film 20.
  • the light source 200 is used when the button display portion 221 is a portion where the light transmittance of the decorative layer 22 is adjusted or a portion where color and shape (pattern) are changed from other portions. That is, the light source 200 is used as a backlight, and the button display unit 221 is displayed in place of other parts.
  • the button display part 221 is a light transmission part
  • the display apparatus 100 is used. As a result, the display image of the display device 100 can be displayed on the button display unit 221.
  • the light source 200 may be used when the button display portion 221 is a light transmitting portion. In this case, light emitted from the light source 200 can be transmitted from the button display unit 221.
  • FIG. 9 is a schematic view showing an application example of the input device.
  • FIG. 9 shows an example in which the input devices 1 and 1B of the present embodiment are applied to an instrument panel P and a floor console C of a mobile unit V such as an automobile.
  • the sensor unit 10 of the input device 1 or 1B may be provided continuously from the instrument panel P to the floor console C, or is divided into a portion of the instrument panel P and a portion of the floor console C. It is also good. When divided, the conduction of the sensor unit 10 divided by the extending portion 25 of the decorative film 20 may be obtained.
  • the instrument panel P has a portion (non-forming area 22b) where the decorative layer 22 of the decorative film 20 is not provided, and the display device 100 is disposed here.
  • a sensor unit 10 is provided on the display device 100 and functions as a touch panel.
  • the button panel 221 or the floor console C is provided with the button display unit 221 by the decorative layer 22, and the sensor unit 10 and the display device 100 or the light source are provided on the back side of these button display units 221. Two hundred are provided. Thereby, displaying a desired design on the button display portion 221 of the decorative layer 22 is realized, and various operations can be performed by touching the button display portion 221.
  • the input device 1 can be provided that can draw the wiring on the back surface side of the support base 15 without causing a decrease in detection sensitivity and without impairing the design. It becomes possible.
  • the present invention is not limited to these examples.
  • those skilled in the art may appropriately add, delete, or change the design of the components from the above-described embodiments, or may appropriately combine the features of the embodiments and the features of the present invention.
  • the moving body V may be other than a car, and is exemplified by an aircraft, a ship, a motorcycle and the like.
  • the input device can be used as an input unit of various devices such as portable terminals, personal computers, home appliances, machine tools and the like.

Abstract

According to one aspect of the present invention, an input device is provided with: a support base having a through-hole formed therein; a sensor part provided on the support base and having a plurality of electrodes and a lead-out pattern that is electrically connected to each of the plurality of electrodes; a decorative part provided above the sensor part with a resin therebetween and having a decorative layer, the decorative layer extending at least from above a portion of the lead-out pattern to above the through-hole; a first conductive pattern provided along the decorative layer; an electrical connection part provided between the sensor part and the decorative part and connecting the lead-out pattern and the first conductive pattern electrically; and an external connection wire part which is electrically connected to the first conductive pattern and led out to the back surface of the support base via the through-hole. This input device can lead out a wire toward the back surface of a panel without causing a deterioration in detection sensitivity and without degrading design properties.

Description

入力装置Input device
 本発明は入力装置に関し、特に指などが接近した位置を検知するタッチセンサを備えた入力装置に関する。 The present invention relates to an input device, and more particularly to an input device provided with a touch sensor that detects a position where a finger or the like has approached.
 入力装置として多く利用されるタッチパネルは、検知領域に指などが接近(以下、接近には接触を含むものとする。)した位置を検出するタッチセンサを備えている。例えば、相互容量方式のタッチパネルにおいては、駆動側の電極と出力側の電極とが設けられており、駆動側の電極にドライブパルスを与え、指などの接近による容量変化を出力側の電極で検知している。 The touch panel, which is often used as an input device, includes a touch sensor that detects a position at which a finger or the like approaches a detection area (hereinafter, the approach includes a touch). For example, in a mutual capacitive touch panel, a drive side electrode and an output side electrode are provided, a drive pulse is applied to the drive side electrode, and a capacitance change due to a finger or the like is detected by the output side electrode doing.
 このようなタッチパネルにおいて、検出用の電極との導通を得るためにパネル周縁部分などにはフレキシブル基板が接続される。また、タッチパネルの正面側からフレキシブル基板が見えないようにしたり、パネル裏面側の回路と接続したりするため、フレキシブル基板をパネル裏面側へ引き出すことも行われている。 In such a touch panel, a flexible substrate is connected to a panel peripheral portion or the like in order to obtain conduction with a detection electrode. Moreover, in order to make the flexible substrate invisible from the front side of the touch panel or to connect with a circuit on the back side of the panel, the flexible substrate is also pulled out to the back side of the panel.
 特許文献1には、導電層を備えるセンサフィルムと、センサフィルムから延出して設けられた引き出し部と、表裏面パネルとを有する入力装置が開示される。この入力装置では、表面パネルおよび裏面パネルがセンサフィルムと一体に樹脂成形されており、表面パネルおよび裏面パネルの少なくとも一方に、引き出し部を支持する支持部が形成されている。 Patent Document 1 discloses an input device having a sensor film provided with a conductive layer, a lead-out portion extended from the sensor film, and a front and back panel. In this input device, the front panel and the back panel are resin-molded integrally with the sensor film, and at least one of the front panel and the back panel is provided with a support portion for supporting the lead-out portion.
 特許文献2には、加飾フィルムとセンサフィルムとを一体成形し、インモールド成型するタッチパネルの製造方法が開示される。このタッチパネルでは、配線引き出し部を基板の側面まで引き出し、スルーホールで裏側へ引き出すようにしている。 Patent Document 2 discloses a method of manufacturing a touch panel in which a decorative film and a sensor film are integrally molded and in-mold molded. In this touch panel, the wiring lead-out portion is drawn to the side of the substrate, and is drawn to the back side by a through hole.
 特許文献3、4には、樹脂部と、樹脂部内に埋め込まれたタッチセンサと、樹脂部に埋め込まれた保持部と、タッチセンサに接続され、かつ保持部に部分的に固着された外部接続部とを備えた部品モジュールが開示される。この部品モジュールにおいては、外部接続部の導出部が樹脂部から厚み方向に導出している。 In Patent Documents 3 and 4, a resin portion, a touch sensor embedded in the resin portion, a holding portion embedded in the resin portion, and an external connection connected to the touch sensor and partially fixed to the holding portion A part module comprising a part is disclosed. In the component module, the lead-out portion of the external connection portion is led from the resin portion in the thickness direction.
 特許文献5には、表面と裏面とを有するフィルム基材上において表面と裏面との少なくともいずれかに回路パターンを形成する工程と、回路パターンが形成されたフィルム基材に対して雄型を用いて前記雄型の外面に倣うようにフィルム基材を成形する工程と、回路パターンが形成されたフィルム基材に対して雄型が接する面と反対面に接する金型を用いて反対面を金型に倣うように成形する工程と、を備える静電容量センサーの製造方法が開示される。 In Patent Document 5, a process of forming a circuit pattern on at least one of the front surface and the back surface on the film substrate having the front surface and the back surface, and using a male mold for the film substrate on which the circuit pattern is formed Forming a film substrate so as to conform to the outer surface of the male mold, and using a mold in contact with the opposite surface of the film substrate on which the circuit pattern is formed with the surface in contact with the male mold. And forming a mold to conform to the mold.
 特許文献6には、パネルの裏面上に加飾層をスクリーン印刷等で塗布形成した後、その裏面上にセンサー配線層を転写形成し、露光・エッチングによりパターン形成したタッチパネルセンサが開示される。 Patent Document 6 discloses a touch panel sensor in which a decorative layer is applied by screen printing or the like on the back surface of a panel, then a sensor wiring layer is transferred and formed on the back surface, and pattern formation is performed by exposure and etching.
特開2016-106314号公報JP, 2016-106314, A 特開2014-056565号公報JP, 2014-056565, A 特開2014-035805号公報JP, 2014-035805, A 特開2014-035806号公報JP, 2014-035806, A 特開2014-170637号公報JP, 2014-170637, A 特開2016-031503号公報JP, 2016-031503, A
 タッチパネルである入力装置において、タッチセンサと加飾部との間にフレキシブル基板を挟んで電極の導通を得る構成では、フレキシブル基板の厚さで段差が発生する。入力装置のパネルを樹脂で一体成形する場合、この段差によって加飾部に歪が発生し、外観に影響を及ぼす原因となる。一方、パネルの裏面側へ引き出し配線を接続しやすくするため、パネルの裏面に近い側にタッチセンサを配置することも考えられるが、タッチセンサがパネル表面から遠くなってしまい、検知感度の低下を招く。 In the input device which is a touch panel, in the configuration in which conduction of the electrodes is obtained by sandwiching the flexible substrate between the touch sensor and the decorative portion, a step is generated with the thickness of the flexible substrate. When the panel of the input device is integrally formed of resin, distortion occurs in the decorated portion due to the step, which causes an influence on the appearance. On the other hand, it is conceivable to place a touch sensor on the side close to the back of the panel in order to make it easier to connect the lead-out to the back side of the panel, but the touch sensor becomes far from the panel surface and the detection sensitivity decreases. Invite.
 本発明は、検知感度の低下を招くことなく、また意匠性を損なうことなく、パネル裏面側に配線を引き出すことができる入力装置を提供することを目的とする。 An object of the present invention is to provide an input device capable of drawing out wiring on the back side of a panel without causing a decrease in detection sensitivity and without impairing the design.
 上記課題を解決するため、本発明の一態様は、貫通孔が設けられた支持基材と、支持基材の上に設けられ、複数の電極部および複数の電極部のそれぞれと導通する引き出しパターンを有するセンサ部と、センサ部の上に樹脂を介して設けられ、加飾層を有し、加飾層が少なくとも引き出しパターンの一部の上から貫通孔の上まで設けられた加飾部と、加飾層に沿って設けられた第1導電パターンと、センサ部と加飾部との間に設けられ、引き出しパターンと第1導電パターンとを導通させる導通接続部と、第1導電パターンと導通し、貫通孔を介して支持基材の裏面まで引き出される外部接続用配線部と、を備えた入力装置である。 In order to solve the above problems, one aspect of the present invention is a support base provided with a through hole, and a drawing pattern provided on the support base and conducting to a plurality of electrode parts and a plurality of electrode parts. A sensor unit having the above-mentioned structure, and a decoration unit provided via a resin on the sensor unit and having a decoration layer, wherein the decoration layer is provided from at least a part of the drawing pattern to the top of the through hole A first conductive pattern provided along the decorative layer, a conductive connection portion provided between the sensor unit and the decorative portion, for electrically connecting the lead pattern and the first conductive pattern, and a first conductive pattern And a wiring portion for external connection which is conducted and drawn out to the back surface of the support base through the through hole.
 このような構成によれば、加飾層に沿って第1導電パターンが設けられ、この第1導電パターンと導通接続部を介して外部接続用配線部が接続される。そして、外部接続用配線部は、支持基材に設けられた貫通孔を介して支持基材の裏面まで引き出される。第1導電パターンは薄膜で形成可能であり、この第1導電パターンがセンサ部と加飾部との間に挟持されていても段差の発生を抑制することができる。また、センサ部は支持基材の加飾部側に配置されるため、検知感度の低下は避けられる。 According to such a configuration, the first conductive pattern is provided along the decorative layer, and the external connection wiring portion is connected via the first conductive pattern and the conductive connection portion. And the wiring part for external connection is pulled out to the back surface of a support base material through the through-hole provided in the support base material. The first conductive pattern can be formed of a thin film, and even if the first conductive pattern is sandwiched between the sensor portion and the decorative portion, the generation of the step can be suppressed. In addition, since the sensor unit is disposed on the side of the decorative portion of the support base, a decrease in detection sensitivity can be avoided.
 上記入力装置において、導通接続部は異方性導電接着剤であってもよい。これにより、センサ部と加飾部とを樹脂で貼り合わせ、加圧することで異方性導電接着剤によって電極と第1導電パターンとを確実に導通させることができる。この導電接続部は、引き出しパターンと第1導電パターンとの導通にも用いられていてよい。 In the above input device, the conductive connection portion may be an anisotropic conductive adhesive. As a result, by bonding the sensor portion and the decoration portion with resin and pressing, the electrode and the first conductive pattern can be reliably conducted by the anisotropic conductive adhesive. The conductive connection portion may also be used for conduction between the lead-out pattern and the first conductive pattern.
 上記入力装置において、外部接続用配線部はフレキシブル配線基板であってもよい。これにより、貫通孔を介してフレキシブル配線基板を支持基材の裏面側へ引き出し、フレキシブル配線基板の可撓性を利用して外部機器(回路)へ取り回し良く接続することができる。 In the above input device, the external connection wiring portion may be a flexible wiring board. Thus, the flexible wiring board can be drawn out to the back surface side of the support base through the through hole, and can be well connected to an external device (circuit) using the flexibility of the flexible wiring board.
 上記入力装置において、外部接続用配線部は貫通孔内に配置されたコネクタであってもよい。これにより、貫通孔内に配置されたコネクタによって外部機器(回路)との接続が行われる。すなわち、支持基材の裏面側でコネクタとの接続により外部機器(回路)との接続を容易に行うことができる。 In the above input device, the external connection wiring portion may be a connector disposed in the through hole. Thereby, connection with an external device (circuit) is performed by the connector disposed in the through hole. That is, the connection with the external device (circuit) can be easily performed by the connection with the connector on the back surface side of the support base material.
 上記入力装置において、加飾層に沿って設けられた接地電極パターンと、加飾層に沿って設けられ、接地電極パターンと導通する第2導電パターンと、をさらに備え、第2導電パターンは接地電極パターンとの接続位置から貫通孔の上まで引き出され、外部接続用配線部は第2導電パターンと導通するよう設けられていてもよい。ここで、接地電極パターンは電磁シールドとしての役目を果たす。この接地電極パターンが加飾部に設けられるため、別途のシールド層を設ける必要がなくなる。 The input device further includes a ground electrode pattern provided along the decorative layer, and a second conductive pattern provided along the decorative layer and electrically connected to the ground electrode pattern, the second conductive pattern being grounded The external connection wiring portion may be provided so as to be electrically connected to the second conductive pattern. Here, the ground electrode pattern serves as an electromagnetic shield. Since this ground electrode pattern is provided in the decorative portion, it is not necessary to provide a separate shield layer.
 本発明によれば、検知感度の低下を招くことなく、パネル裏面側に配線を引き出すことができる入力装置を提供することが可能になる。 According to the present invention, it is possible to provide an input device capable of extracting wiring on the back side of the panel without causing a decrease in detection sensitivity.
本実施形態に係る入力装置を例示する分解斜視図である。It is an exploded perspective view which illustrates the input device concerning this embodiment. 本実施形態に係る入力装置のセンサ部を例示する模式平面図である。It is a model top view which illustrates the sensor part of the input device concerning this embodiment. 本実施形態に係る入力装置の加飾フィルムを例示する模式平面図である。It is a model top view which illustrates the decoration film of the input device concerning this embodiment. 本実施形態に係る入力装置の一部の模式断面図である。It is a schematic cross section of a part of input device concerning this embodiment. 参考例を示す模式断面図である。It is a schematic cross section which shows a reference example. 樹脂を例示する模式平面図である。It is a model top view which illustrates resin. 他の外部接続用配線部を例示する模式断面図である。It is a schematic cross section which illustrates the wiring part for other external connection. 他の実施形態を例示する分解斜視図である。FIG. 7 is an exploded perspective view illustrating another embodiment. 入力装置の適用例を示す模式図である。It is a schematic diagram which shows the application example of an input device.
 以下、本発明の実施形態を図面に基づいて説明する。なお、以下の説明では、同一の部材には同一の符号を付し、一度説明した部材については適宜その説明を省略する。
(入力装置の構成)
 図1は、本実施形態に係る入力装置を例示する分解斜視図である。
Hereinafter, embodiments of the present invention will be described based on the drawings. In the following description, the same members are denoted by the same reference numerals, and the description of the members once described will be omitted as appropriate.
(Configuration of input device)
FIG. 1 is an exploded perspective view illustrating an input device according to the present embodiment.
 図2は、本実施形態に係る入力装置のセンサ部を例示する模式平面図である。 FIG. 2 is a schematic plan view illustrating the sensor unit of the input device according to the embodiment.
 図1に示すように、本実施形態に係る入力装置1は、支持基材15と、支持基材15に設けられたセンサ部10と、センサ部10と第1方向D1に重ね合わされた加飾フィルム(加飾部)20とを備える。加飾フィルム20の上には表面カバー30が設けられていてもよい。入力装置1は、例えばタッチパネルである。入力装置1は、液晶などの表示装置100の上に取り付けられる。なお、本実施形態では、入力装置1において表面カバー30側を表側(表面側)、表面カバー30と反対側を裏側(裏面側)とも言うことにする。 As shown in FIG. 1, the input device 1 according to the present embodiment includes a support base 15, a sensor unit 10 provided on the support base 15, and a decoration in which the sensor unit 10 and the first direction D1 overlap one another. A film (decorated portion) 20 is provided. A surface cover 30 may be provided on the decorative film 20. The input device 1 is, for example, a touch panel. The input device 1 is mounted on a display device 100 such as liquid crystal. In the present embodiment, the surface cover 30 side of the input device 1 is also referred to as the front side (surface side), and the side opposite to the surface cover 30 is also referred to as the back side (back side).
 支持基材15は例えば成形樹脂であって、センサ部10を配置するための部材である。支持基材15には貫通孔15hが設けられている。貫通孔15hは、支持基材15における検知領域SAの外側の周辺エリアに設けられる。 The supporting base 15 is, for example, a molded resin, and is a member for arranging the sensor unit 10. The support base 15 is provided with a through hole 15 h. The through holes 15 h are provided in the peripheral area outside the detection area SA in the support base 15.
 センサ部10は、例えば静電容量式のタッチセンサであり、検知領域SAに指などが接近した場合の静電容量の変化によって位置検出を行う。センサ部10は、支持基材15の上に配置される。センサ部10は、支持基材15における検知領域SAに設けられた透光性電極部である第1電極11および第2電極12を備える。第1電極11および第2電極12は、後述するベースフィルム110(図4参照)の上に形成されている。 The sensor unit 10 is, for example, a capacitive touch sensor, and performs position detection based on a change in electrostatic capacitance when a finger or the like approaches the detection area SA. The sensor unit 10 is disposed on the support base 15. The sensor unit 10 includes a first electrode 11 and a second electrode 12 which are translucent electrode units provided in the detection area SA of the support base 15. The first electrode 11 and the second electrode 12 are formed on a base film 110 (see FIG. 4) described later.
 ベースフィルム110は、PET(Polyethylene Terephthalate)、COP(シクロオレフィンポリマー)、COC(環状オレフィンコポリマー)などの透光性を有する可撓性フィルム、アクリル樹脂、ポリカーボネート樹脂などの硬質の透光性板材などで形成されており、このベースフィルム110に透光性電極が形成されることでセンサフィルムが構成される。 The base film 110 is a flexible film having translucency such as PET (polyethylene terephtalate), COP (cycloolefin polymer), COC (cyclic olefin copolymer), etc., a rigid translucent plate such as acrylic resin, polycarbonate resin, etc. The sensor film is formed by forming a translucent electrode on the base film 110.
 第1電極11はベースフィルム110の表面に沿った一方向(例えば、X方向)に延在し、第2電極12はベースフィルム110の表面に沿い一方向と直交する方向(例えば、Y方向)に延在する。第1電極11および第2電極12は互いに絶縁される。本実施形態では、Y方向に所定のピッチで複数の第1電極11が配置され、X方向に所定のピッチで複数の第2電極12が配置される。 The first electrode 11 extends in one direction (for example, the X direction) along the surface of the base film 110, and the second electrode 12 extends along the surface of the base film 110 in the direction orthogonal to the one direction (for example, Y direction) Extends to The first electrode 11 and the second electrode 12 are insulated from each other. In the present embodiment, the plurality of first electrodes 11 are disposed at a predetermined pitch in the Y direction, and the plurality of second electrodes 12 are disposed at a predetermined pitch in the X direction.
 第1電極11および第2電極12を構成する電極のパターンは各種あるが、本実施形態では、第1電極11および第2電極12のそれぞれは複数の島状電極部を有する。各島状電極部は例えば菱形に近い形状を有している。 Although there are various patterns of electrodes constituting the first electrode 11 and the second electrode 12, in the present embodiment, each of the first electrode 11 and the second electrode 12 has a plurality of island-shaped electrode portions. Each insular electrode portion has, for example, a shape close to a rhombus.
 第1電極11および第2電極12は検知領域SAと重なる位置に設けられるため、表示装置100によって表示される画像を透過できるように透光性を有している。このため、第1電極11および第2電極12には透光性導電材料(ITO(Indium Tin Oxide)、SnO、ZnO、導電性ナノ材料、網目状に形成された金属材料など)が用いられる。 Since the first electrode 11 and the second electrode 12 are provided at positions overlapping with the detection area SA, the first electrode 11 and the second electrode 12 have translucency so as to transmit an image displayed by the display device 100. Therefore, a translucent conductive material (ITO (Indium Tin Oxide), SnO 2 , ZnO, conductive nanomaterial, metal material formed in a mesh shape, etc.) is used for the first electrode 11 and the second electrode 12 .
 ベースフィルム110の検知領域SAの外側である周辺エリアには端子部155が設けられる。第1電極11および第2電極12と導通する引き出しパターン150は周辺エリアに延在しており、端子部155と接続される。端子部155は、後述する第1導電パターン251と接続される。 Terminals 155 are provided in the peripheral area outside the detection area SA of the base film 110. The lead-out pattern 150 electrically connected to the first electrode 11 and the second electrode 12 extends to the peripheral area, and is connected to the terminal portion 155. The terminal portion 155 is connected to a first conductive pattern 251 described later.
 センサ部10の上(第1電極11および第2電極12が形成された側)には、加飾フィルム20が設けられる。加飾フィルム20は、透光性を有するベースフィルム21と、ベースフィルム21に設けられた加飾層22とを有する。加飾層22は検知領域SAの外側である周辺エリアに設けられる。周辺エリアを加飾層22でカバーすることにより、引き出しパターン150や端子部155が外側から視認されないようにすることができる。また、加飾層22によって外観意匠の一部を構成することができる。 A decorative film 20 is provided on the sensor unit 10 (the side on which the first electrode 11 and the second electrode 12 are formed). The decorative film 20 has a light transmitting base film 21 and a decorative layer 22 provided on the base film 21. The decorative layer 22 is provided in the peripheral area which is the outside of the detection area SA. By covering the peripheral area with the decorative layer 22, the lead-out pattern 150 and the terminal portion 155 can be prevented from being visually recognized from the outside. Further, the decorative layer 22 can constitute a part of the appearance design.
 加飾フィルム20は、後述する樹脂50(図4参照)によってセンサ部10の上に取り付けられる。樹脂50は接着層であり、好ましくはOCA(Optical Clear Adhesive)などの透光性接着剤が用いられる。ただし、加飾層22の下側では透光性を有していなくてもよく、着色した樹脂50を用いてもよい。加飾フィルム20の上には表面カバー30が設けられる。表面カバー30は、ガラスやプラスチックによる透光性を備えた薄板状の部材である。 The decorative film 20 is attached on the sensor unit 10 by a resin 50 (see FIG. 4) described later. The resin 50 is an adhesive layer, and preferably a translucent adhesive such as OCA (Optical Clear Adhesive) is used. However, the lower side of the decorative layer 22 may not have translucency, and a colored resin 50 may be used. A surface cover 30 is provided on the decorative film 20. The surface cover 30 is a thin plate-like member having translucency of glass or plastic.
 なお、本実施形態では、支持基材15、センサ部10、加飾フィルム20および表面カバー30などのパネル状およびフィルム状の部材を第1方向D1に積層した構成を例示しているが、センサ部10と加飾フィルム20とを貼り合わせた部材を、樹脂と一体成形(IMD:In-mold Decoration、IML:In-Mold Laminating、TOM:Three dimension Overlay Methodなど)して、支持基材15および表面カバー30を含む樹脂でセンサ部10および加飾フィルム20を覆った積層構造体(平面型、湾曲型など)に成形してもよい。 In the present embodiment, the configuration in which panel-like and film-like members such as the support base 15, the sensor unit 10, the decorative film 20, and the surface cover 30 are laminated in the first direction D1 is illustrated. The member obtained by laminating the part 10 and the decorative film 20 is integrally molded with a resin (IMD: In-mold Decoration, IML: In-Mold Laminating, TOM: Three dimension Overlay Method, etc.) You may shape | mold into the laminated structure (planar type, curved type | mold, etc.) which covered the sensor part 10 and the decoration film 20 with resin containing the surface cover 30. FIG.
 このような入力装置1においては、加飾フィルム20の加飾層22に沿って第1導電パターン251が設けられる。第1導電パターン251は、センサ部10の第1電極11や第2電極12と導通する導電性パターンである。第1導電パターン251は加飾層22の位置から貫通孔15hの上まで配置される。 In such an input device 1, the first conductive pattern 251 is provided along the decoration layer 22 of the decoration film 20. The first conductive pattern 251 is a conductive pattern electrically connected to the first electrode 11 or the second electrode 12 of the sensor unit 10. The first conductive pattern 251 is disposed from the position of the decorative layer 22 to above the through hole 15 h.
 図3は、本実施形態に係る入力装置の加飾フィルムを例示する模式平面図である。 FIG. 3 is a schematic plan view illustrating the decorative film of the input device according to the embodiment.
 図3には、加飾フィルム20を裏面(センサ部10と対向する面)からみた平面図が示される。なお、説明の都合上、図3には加飾層22は符号のみ示しているが、加飾層22は検知領域SAの外側の周辺エリアに設けられている。 The top view which looked at the decoration film 20 from the back surface (surface facing the sensor part 10) is shown by FIG. In addition, although the decoration layer 22 only shows the code | symbol in FIG. 3 on account of description, the decoration layer 22 is provided in the peripheral area of the outer side of detection area SA.
 図4は、本実施形態に係る入力装置の一部の模式断面図である。 FIG. 4 is a schematic cross-sectional view of part of the input device according to the present embodiment.
 検知領域SAの外側の周辺エリアには複数の第1導電パターン251が設けられている。第1導電パターン251は、この加飾層22のセンサ部10側に設けられる。複数の第1導電パターン251のそれぞれの検知領域SAに近位な端部(一端部251a)は、加飾フィルム20をセンサ部10に重ね合わせた際にセンサ部10の端子部155と向かい合う位置となる。一方、複数の第1導電パターン251のそれぞれの検知領域SAから遠位な端部(他端部251b)は、支持基材15の貫通孔15hの上の位置となる。 A plurality of first conductive patterns 251 are provided in the peripheral area outside the detection area SA. The first conductive pattern 251 is provided on the sensor unit 10 side of the decorative layer 22. The end (one end 251a) proximal to the detection area SA of each of the plurality of first conductive patterns 251 is a position where it faces the terminal portion 155 of the sensor unit 10 when the decorative film 20 is superimposed on the sensor unit 10. It becomes. On the other hand, the end (the other end 251 b) distal to the detection area SA of each of the plurality of first conductive patterns 251 is located above the through hole 15 h of the support base 15.
 センサ部10と加飾フィルム20とを重ね合わせた状態で、互いに向かい合う加飾フィルム20の第1導電パターン251と、センサ部10の端子部155との間には導通接続部40が設けられる。導通接続部40としては、異方性導電接着剤などが用いられる。導通接続部40によって、第1導電パターン251と端子部155とが導通接続される。 A conductive connection portion 40 is provided between the first conductive pattern 251 of the decorative film 20 facing each other and the terminal portion 155 of the sensor portion 10 in a state in which the sensor portion 10 and the decorative film 20 are superimposed. As the conductive connection portion 40, an anisotropic conductive adhesive or the like is used. The conductive connection portion 40 electrically connects the first conductive pattern 251 and the terminal portion 155.
 このような接続によって、第1電極11および第2電極12から引き出しパターン150および導通接続部40を介して第1導電パターン251まで導通経路が構成される。そして、支持基材15の貫通孔15hには、外部接続用配線部70が設けられる。外部接続用配線部70にはフレキシブル配線基板710が用いられる。 By such connection, a conduction path is formed from the first electrode 11 and the second electrode 12 to the first conductive pattern 251 through the lead pattern 150 and the conductive connection portion 40. The external connection wiring portion 70 is provided in the through hole 15 h of the support base 15. A flexible wiring board 710 is used for the external connection wiring portion 70.
 フレキシブル配線基板710は、ポリイミド等の可撓性を有する基材711と、基材711の上に形成された配線パターン712と、配線パターン712を覆う保護層713とを備える。フレキシブル配線基板710は、先端を折り曲げるようにして貫通孔15h内に配置される。貫通孔15h内で折り曲げられた部分の配線パターン712と貫通孔15hの上まで延設された第1導電パターン251とが向かい合い、導通接続部40によって接続される。 The flexible wiring substrate 710 includes a flexible base material 711 such as polyimide, a wiring pattern 712 formed on the base material 711, and a protective layer 713 covering the wiring pattern 712. The flexible wiring board 710 is disposed in the through hole 15 h so as to bend its tip. The wiring pattern 712 in the portion bent in the through hole 15 h and the first conductive pattern 251 extended to the top of the through hole 15 h face each other and are connected by the conductive connection portion 40.
 これにより、第1導電パターン251とフレキシブル配線基板710の配線パターン712とが導通し、配線パターン712がフレキシブル配線基板710によって支持基材15の裏面側へ引き出されることになる。支持基材15の裏面側へ引き出されたフレキシブル配線基板710は、外部機器(回路)との接続を行うための引き出し用部材として利用される。フレキシブル配線基板710の可撓性を利用することで、入力装置1と外部機器(回路)との接続を取り回し良く行うことができる。 As a result, the first conductive pattern 251 and the wiring pattern 712 of the flexible wiring substrate 710 are electrically connected, and the wiring pattern 712 is drawn to the back surface side of the support base 15 by the flexible wiring substrate 710. The flexible wiring board 710 drawn to the back surface side of the support base 15 is used as a drawing member for connecting to an external device (circuit). By utilizing the flexibility of the flexible wiring board 710, the connection between the input device 1 and the external device (circuit) can be managed well.
 第1導電パターン251は加飾層22の上にスクリーン印刷などによって形成されるため、非常に薄膜に形成可能である。例えば、第1導電パターン251の厚さは4μmである。このため、第1導電パターン251がセンサ部10と加飾フィルム20との間に挟持されていても、第1導電パターン251の厚さによる段差はほとんど発生しない。 Since the first conductive pattern 251 is formed on the decorative layer 22 by screen printing or the like, it can be formed very thinly. For example, the thickness of the first conductive pattern 251 is 4 μm. For this reason, even if the first conductive pattern 251 is sandwiched between the sensor unit 10 and the decorative film 20, almost no step due to the thickness of the first conductive pattern 251 occurs.
 図5は、参考例を示す模式断面図である。 FIG. 5 is a schematic cross-sectional view showing a reference example.
 参考例に示す入力装置2では、引き出しパターン150との接続にフレキシブル配線基板80が用いられる。フレキシブル配線基板80は、センサ部10と加飾フィルム20との間で挟持される。フレキシブル配線基板80を挟んでいる位置において、フレキシブル配線基板80の導電パターン82と、センサ部10の引き出しパターン150とが導通接続部40によって接続される。 In the input device 2 shown in the reference example, the flexible wiring board 80 is used for connection with the lead-out pattern 150. The flexible wiring substrate 80 is sandwiched between the sensor unit 10 and the decorative film 20. The conductive pattern 82 of the flexible wiring substrate 80 and the lead-out pattern 150 of the sensor unit 10 are connected by the conductive connection portion 40 at a position sandwiching the flexible wiring substrate 80.
 フレキシブル配線基板80は、ポリイミド等の可撓性基材81に導電パターン82と、導電パターン82を覆うカバーフィルム83とが設けられた構成を有する。可撓性基材81の厚さは20μm程度であり、フレキシブル配線基板80の全体の厚さは65μm程度となる。このような厚さを有するフレキシブル配線基板80をセンサ部10と加飾フィルム20との間で挟持すると、厚さの影響で加飾フィルム20に段差dが発生する。このような段差dによって加飾フィルム20に歪が発生し、外観に影響を及ぼすことになる。 The flexible wiring substrate 80 has a configuration in which a conductive pattern 82 and a cover film 83 covering the conductive pattern 82 are provided on a flexible base 81 such as polyimide. The thickness of the flexible substrate 81 is about 20 μm, and the total thickness of the flexible wiring substrate 80 is about 65 μm. When the flexible wiring substrate 80 having such a thickness is sandwiched between the sensor unit 10 and the decorative film 20, a step d is generated in the decorative film 20 due to the influence of the thickness. Such a step d causes distortion in the decorative film 20 and affects the appearance.
 一方、本実施形態に係る入力装置1では、フレキシブル配線基板80のような厚さを有する基材を挟持しないため、加飾フィルム20に段差は発生しない。外部への引き出し配線部材として、加飾層22に沿って設けられた第1導電パターン251と、貫通孔15hから支持基材15の裏面側へ引き出されるフレキシブル配線基板710を用いるため、加飾フィルム20にはほとんど段差は発生しないことになる。特に、入力装置1の表面カバー30などをセンサ部10および加飾フィルム20と一体成形する場合であっても、加飾フィルム20に段差による歪が発生せず、意匠性に影響を及ぼすことはない。 On the other hand, in the input device 1 according to the present embodiment, no step is generated in the decorative film 20 because the base having a thickness such as the flexible wiring substrate 80 is not held. Since the first conductive pattern 251 provided along the decorative layer 22 and the flexible wiring board 710 drawn out from the through hole 15 h to the back surface side of the support base 15 are used as the lead-out wiring members to the outside, a decorative film Almost no level difference will occur at 20. In particular, even when the surface cover 30 or the like of the input device 1 is integrally formed with the sensor unit 10 and the decorative film 20, no distortion due to a step is generated in the decorative film 20, which affects the designability Absent.
 また、センサ部10は支持基材15の加飾フィルム20側に配置されるため、センサ部10を支持基材15の裏面側や裏面と近い位置に設ける場合に比べて検知感度の低下を回避することができる。 Further, since the sensor unit 10 is disposed on the side of the support film 15 on the decorative film 20 side, a decrease in detection sensitivity is avoided as compared to the case where the sensor unit 10 is provided near the back surface side or back surface of the support substrate 15 can do.
 本実施形態に係る入力装置1において、加飾層22に沿って接地電極パターン60(図3参照)が設けられていてもよい。接地電極パターン60は、例えば検知領域SAの周辺エリアにおける加飾層22と重なる位置に設けられる。接地電極パターン60は、例えばメッシュ状のパターンを有する。加飾フィルム20には第2導電パターン252が設けられており、この第2導電パターン252と接地電極パターン60とが導通している。第2導電パターン252は、貫通孔15hに配置されたフレキシブル配線基板710の配線パターン712と導通接続部40によって導通接続される。 In the input device 1 according to the present embodiment, the ground electrode pattern 60 (see FIG. 3) may be provided along the decorative layer 22. The ground electrode pattern 60 is provided, for example, at a position overlapping the decorative layer 22 in the peripheral area of the detection area SA. The ground electrode pattern 60 has, for example, a mesh-like pattern. The decorative film 20 is provided with a second conductive pattern 252, and the second conductive pattern 252 and the ground electrode pattern 60 are electrically connected. The second conductive pattern 252 is conductively connected to the wiring pattern 712 of the flexible wiring board 710 disposed in the through hole 15 h by the conductive connection portion 40.
 第2導電パターン252は接地電位となっている。これにより接地電極パターン60は電磁シールドとしての役目を果たす。この接地電極パターン60が加飾フィルム20に設けられるため、別途のシールド層を設ける必要がなくなる。 The second conductive pattern 252 is at the ground potential. Thus, the ground electrode pattern 60 serves as an electromagnetic shield. Since the ground electrode pattern 60 is provided on the decorative film 20, it is not necessary to provide a separate shield layer.
 図6は、樹脂50を例示する模式平面図である。 FIG. 6 is a schematic plan view illustrating the resin 50. As shown in FIG.
 樹脂50はセンサ部10と加飾フィルム20との間に設けられ、両者を貼り合わせるための接着層となる。樹脂50はシート状になっており、樹脂50を加熱加圧することによってセンサ部10と加飾フィルム20とが貼り合わされる。加熱加圧する前のシート状において、樹脂50には孔50hが設けられている。孔50hは例えば矩形状に設けられる。 The resin 50 is provided between the sensor unit 10 and the decorative film 20 and serves as an adhesive layer for bonding the two together. The resin 50 is in the form of a sheet, and the sensor unit 10 and the decorative film 20 are bonded together by heating and pressing the resin 50. A hole 50 h is provided in the resin 50 in the form of a sheet before being heated and pressurized. The holes 50h are provided, for example, in a rectangular shape.
 樹脂50によってセンサ部10と加飾フィルム20とを貼り合わせる際、先ず、センサ部10の上にシート状の樹脂50を載置する。この際、孔50hの内側に引き出しパターン150の端子部155が配置される。次に、孔50h内の端子部155に導通接続部40である例えば異方性導電接着剤を塗布する。次いで、この状態で加飾フィルム20を樹脂50の上に載置する。これにより、孔50h内において加飾フィルム20の第1導電パターン251の一端部251aと、端子部155とが導通接続部40によって接続される。また、第1導電パターン251の他端部251bは孔50hの上に位置する。 When bonding the sensor unit 10 and the decorative film 20 with the resin 50, first, the sheet-like resin 50 is placed on the sensor unit 10. At this time, the terminal portion 155 of the lead-out pattern 150 is disposed inside the hole 50 h. Next, for example, an anisotropic conductive adhesive, which is the conductive connection portion 40, is applied to the terminal portion 155 in the hole 50h. Next, the decorative film 20 is placed on the resin 50 in this state. Thereby, the one end portion 251 a of the first conductive pattern 251 of the decorative film 20 and the terminal portion 155 are connected by the conductive connection portion 40 in the hole 50 h. In addition, the other end 251 b of the first conductive pattern 251 is located above the hole 50 h.
 この状態で樹脂50を間に挟んだセンサ部10と加飾フィルム20とを加熱加圧すると、両者が樹脂50で貼り合わされた積層構造体が構成される。樹脂50に孔50hを設けておくことで、樹脂50によって遮られることなく導通接続部40によって第1導電パターン251の一端部251aと端子部155とを確実に導通接続させることができる。ここで、加飾フィルム20における加飾層22の形成領域と非形成領域との全体にわたって樹脂50が形成される場合には、樹脂50として透光性樹脂を用いることが好ましい。ただし、加飾フィルム20における加飾層22の形成領域では着色された遮光性の樹脂50を用いてもよい。この場合は、加飾フィルム20の加飾層22の非形成領域には透光性樹脂、加飾層22の形成領域には着色樹脂を用いることができる。さらに、加飾フィルム20の全体にわたり加飾層22が形成されている場合には、樹脂50として透光性樹脂または着色樹脂のどちらを使用してもよい。 When the sensor unit 10 and the decorative film 20 sandwiching the resin 50 in this state are heated and pressurized, a laminated structure in which both are bonded with the resin 50 is configured. By providing the holes 50 h in the resin 50, the one end portion 251 a of the first conductive pattern 251 and the terminal portion 155 can be surely connected by the conductive connection portion 40 without being blocked by the resin 50. Here, in the case where the resin 50 is formed over the entire formation region and the non-formation region of the decorative layer 22 in the decorative film 20, it is preferable to use a translucent resin as the resin 50. However, in the formation region of the decorative layer 22 in the decorative film 20, a colored light shielding resin 50 may be used. In this case, a translucent resin can be used in the non-formation region of the decoration layer 22 of the decoration film 20, and a coloring resin can be used in the formation region of the decoration layer 22. Furthermore, when the decorative layer 22 is formed over the whole of the decorative film 20, either a translucent resin or a colored resin may be used as the resin 50.
 その後、貫通孔15hにフレキシブル配線基板710を差し込み、フレキシブル配線基板710の配線パターン712と第1導電パターン251の他端部251bとを導通接続部40によって接続する。なお、フレキシブル配線基板710は、センサ部10と加飾フィルム20とを貼り合わせる前に、予め加飾フィルム20の第1導電パターン251の他端部251bに接続しておき、センサ部10と加飾フィルム20とを樹脂50によって貼り合わせる際に、フレキシブル配線基板710の端部を貫通孔15hに通した後、貼り合わせを行うようにしてもよい。 Thereafter, the flexible wiring board 710 is inserted into the through hole 15 h, and the wiring pattern 712 of the flexible wiring board 710 and the other end 251 b of the first conductive pattern 251 are connected by the conductive connection portion 40. The flexible wiring substrate 710 is previously connected to the other end 251 b of the first conductive pattern 251 of the decorative film 20 before the sensor unit 10 and the decorative film 20 are attached to each other, and When bonding the decorative film 20 with the resin 50, the end portion of the flexible wiring substrate 710 may be passed through the through hole 15h, and then bonding may be performed.
 図7は、他の外部接続用配線部を例示する模式断面図である。 FIG. 7 is a schematic cross-sectional view illustrating another external connection wiring portion.
 図7に示す外部接続用配線部70には、コネクタ720が用いられる。コネクタ720は支持基材15の貫通孔15h内に配置される。コネクタ720の端子721は、貫通孔15h内において第1導電パターン251や第2導電パターン252と導通接続部40によって接続される。 A connector 720 is used for the external connection wiring portion 70 shown in FIG. The connector 720 is disposed in the through hole 15 h of the support base 15. The terminal 721 of the connector 720 is connected to the first conductive pattern 251 and the second conductive pattern 252 in the through hole 15 h by the conductive connection portion 40.
 コネクタ720は、支持基材15を構成した後に貫通孔15hに挿入するようにしてもよいし、支持基材15を成形する際にインサート成形によって組み込むようにしてもよい。 The connector 720 may be inserted into the through hole 15 h after forming the support base 15, or may be incorporated by insert molding when the support base 15 is formed.
 コネクタ720には、外部(回路)と導通する配線に取り付けられた相手方コネクタ750が接続される。これにより、支持基材15の裏面側でコネクタ720および相手方コネクタ750との接続により外部機器(回路)との接続を容易に行うことができる。また、コネクタ720を用いることで、相手方コネクタ750との着脱を自在に行うことができる。さらに、支持基材15の裏面側から引き出し用の部材を延出させずに済む。
(他の実施形態)
 図8は、他の実施形態を例示する分解斜視図である。
Connected to the connector 720 is a mating connector 750 attached to a wire electrically connected to the outside (circuit). Thereby, the connection with the external device (circuit) can be easily performed by the connection with the connector 720 and the mating connector 750 on the back surface side of the support base 15. Further, by using the connector 720, it is possible to freely attach and detach to and from the mating connector 750. Furthermore, it is not necessary to extend the member for pulling out from the back surface side of the support base 15.
(Other embodiments)
FIG. 8 is an exploded perspective view illustrating another embodiment.
 図8に示す入力装置1Bでは、加飾フィルム20のほぼ全面に加飾層22が設けられている。加飾層22の一部には、ボタン表示部221が設けられる。ボタン表示部221は、加飾層22の光透過率を調整した部分でもよいし、他の部分と色や形状(模様)を変えた部分でもよいし、加飾層22が設けられていない透光(例えば、透明)部分でもよい。 In the input device 1 </ b> B shown in FIG. 8, the decorative layer 22 is provided on substantially the entire surface of the decorative film 20. A button display unit 221 is provided on part of the decorative layer 22. The button display portion 221 may be a portion where the light transmittance of the decorative layer 22 is adjusted, or may be a portion where color and shape (pattern) are different from those of other portions, or where the decorative layer 22 is not provided. It may be a light (for example, transparent) part.
 センサ部10の加飾フィルム20とは反対側には、表示装置100および光源200の少なくともいずれかが設けられる。例えば、ボタン表示部221が加飾層22の光透過率を調整した部分であったり、他の部分と色や形状(模様)を変えた部分であったりした場合には光源200が用いられる。すなわち、光源200をバックライトとして利用して、ボタン表示部221を他の部分と変えて表示させる。また、ボタン表示部221が透光部分である場合には、表示装置100が用いられる。これにより、表示装置100の表示画像をボタン表示部221に映し出すことができる。なお、ボタン表示部221が透光部分である場合に光源200を用いてもよい。この場合、光源200から放出される光をボタン表示部221から透過させることができる。
(適用例)
 図9は、入力装置の適用例を示す模式図である。
At least one of the display device 100 and the light source 200 is provided on the opposite side of the sensor unit 10 to the decorative film 20. For example, the light source 200 is used when the button display portion 221 is a portion where the light transmittance of the decorative layer 22 is adjusted or a portion where color and shape (pattern) are changed from other portions. That is, the light source 200 is used as a backlight, and the button display unit 221 is displayed in place of other parts. Moreover, when the button display part 221 is a light transmission part, the display apparatus 100 is used. As a result, the display image of the display device 100 can be displayed on the button display unit 221. The light source 200 may be used when the button display portion 221 is a light transmitting portion. In this case, light emitted from the light source 200 can be transmitted from the button display unit 221.
(Example of application)
FIG. 9 is a schematic view showing an application example of the input device.
 図9には、自動車等の移動体VのインストルメントパネルPおよびフロアコンソールCに本実施形態の入力装置1、1Bを適用した例が示される。 FIG. 9 shows an example in which the input devices 1 and 1B of the present embodiment are applied to an instrument panel P and a floor console C of a mobile unit V such as an automobile.
 入力装置1、1Bのセンサ部10は、インストルメントパネルPからフロアコンソールCにかけて連続して設けられていてもよいし、インストルメントパネルPの部分と、フロアコンソールCの部分とに分割されていてもよい。分割されている場合には、加飾フィルム20の延出部25によって分割されたセンサ部10の導通を得るようにしてもよい。 The sensor unit 10 of the input device 1 or 1B may be provided continuously from the instrument panel P to the floor console C, or is divided into a portion of the instrument panel P and a portion of the floor console C. It is also good. When divided, the conduction of the sensor unit 10 divided by the extending portion 25 of the decorative film 20 may be obtained.
 例えば、インストルメントパネルPには加飾フィルム20の加飾層22が設けられていない部分(非形成領域22b)があり、ここに表示装置100が配置される。表示装置100の上にはセンサ部10が設けられ、タッチパネルとして機能する。図10に示される例では、インストルメントパネルPやフロアコンソールCには加飾層22によるボタン表示部221が設けられ、これらのボタン表示部221の裏面側にセンサ部10および表示装置100または光源200が設けられている。これにより、加飾層22のボタン表示部221に所望の意匠を表示することが実現され、そのボタン表示部221をタッチすることで各種の操作を行うことができる。 For example, the instrument panel P has a portion (non-forming area 22b) where the decorative layer 22 of the decorative film 20 is not provided, and the display device 100 is disposed here. A sensor unit 10 is provided on the display device 100 and functions as a touch panel. In the example shown in FIG. 10, the button panel 221 or the floor console C is provided with the button display unit 221 by the decorative layer 22, and the sensor unit 10 and the display device 100 or the light source are provided on the back side of these button display units 221. Two hundred are provided. Thereby, displaying a desired design on the button display portion 221 of the decorative layer 22 is realized, and various operations can be performed by touching the button display portion 221.
 以上説明したように、本実施形態によれば、検知感度の低下を招くことなく、また意匠性を損なうことなく、支持基材15の裏面側に配線を引き出すことができる入力装置1を提供することが可能となる。 As described above, according to the present embodiment, the input device 1 can be provided that can draw the wiring on the back surface side of the support base 15 without causing a decrease in detection sensitivity and without impairing the design. It becomes possible.
 なお、上記に本実施形態を説明したが、本発明はこれらの例に限定されるものではない。例えば、前述の各実施形態に対して、当業者が適宜、構成要素の追加、削除、設計変更を行ったものや、各実施形態の特徴を適宜組み合わせたものも、本発明の要旨を備えている限り、本発明の範囲に包含される。例えば、移動体Vは自動車以外であってもよく、航空機、船舶、バイクなどが例示される。また、入力装置は携帯端末、パーソナルコンピュータ、家電品、工作機械などの各種機器の入力部として用いることが可能である。 Although the present embodiment has been described above, the present invention is not limited to these examples. For example, those skilled in the art may appropriately add, delete, or change the design of the components from the above-described embodiments, or may appropriately combine the features of the embodiments and the features of the present invention. As long as it is, it is included in the scope of the present invention. For example, the moving body V may be other than a car, and is exemplified by an aircraft, a ship, a motorcycle and the like. Further, the input device can be used as an input unit of various devices such as portable terminals, personal computers, home appliances, machine tools and the like.
1,1B,2…入力装置
10…センサ部
11…第1電極
12…第2電極
15…支持基材
15h…貫通孔
20…加飾フィルム
21…ベースフィルム
22…加飾層
22b…非形成領域
30…表面カバー
40…導通接続部
50…樹脂
50h…孔
60…接地電極パターン
70…外部接続用配線部
80…フレキシブル配線基板
81…可撓性基材
82…導電パターン
83…カバーフィルム
100…表示装置
110…ベースフィルム
150…引き出しパターン
155…端子部
200…光源
221…ボタン表示部
251…第1導電パターン
251a…一端部
251b…他端部
252…第2導電パターン
710…フレキシブル配線基板
711…基材
712…配線パターン
713…保護層
720…コネクタ
721…端子
750…相手方コネクタ
C…フロアコンソール
D1…第1方向
P…インストルメントパネル
SA…検知領域
V…移動体
d…段差
1, 1 B, 2 Input device 10 Sensor portion 11 First electrode 12 Second electrode 15 Support base 15 h Through hole 20 Decorative film 21 Base film 22 Decorative layer 22 b Non-forming area Reference Signs List 30 surface cover 40 conductive connection portion 50 resin 50 h hole 60 ground electrode pattern 70 wiring portion 80 for external connection flexible wiring substrate 81 flexible base material 82 conductive pattern 83 cover film 100 display Device 110: Base film 150: Draw-out pattern 155: Terminal portion 200: Light source 221: Button display portion 251: First conductive pattern 251a: One end portion 251b: Other end portion 252: Second conductive pattern 710: Flexible wiring board 711: Base Material 712 ... Wiring pattern 713 ... Protective layer 720 ... Connector 721 ... Terminal 750 ... Counterpart connector C ... Floor conso D1 ... first direction P ... instrument panel SA ... detection region V ... mobile d ... step

Claims (5)

  1.  貫通孔が設けられた支持基材と、
     前記支持基材の上に設けられ、複数の電極部および前記複数の電極部のそれぞれと導通する引き出しパターンを有するセンサ部と、
     前記センサ部の上に樹脂を介して設けられ、加飾層を有し、前記加飾層が少なくとも前記引き出しパターンの一部の上から前記貫通孔の上まで設けられた加飾部と、
     前記加飾層に沿って設けられた第1導電パターンと、
     前記センサ部と前記加飾部との間に設けられ、前記引き出しパターンと前記第1導電パターンとを導通させる導通接続部と、
     前記第1導電パターンと導通し、前記貫通孔を介して前記支持基材の裏面まで引き出される外部接続用配線部と、
     を備えた入力装置。
    A supporting substrate provided with a through hole;
    A sensor section provided on the support base material and having a plurality of electrode sections and a lead pattern electrically connected to each of the plurality of electrode sections;
    A decorative portion provided on the sensor portion via a resin and having a decorative layer, wherein the decorative layer is provided from at least a portion of the lead-out pattern to above the through hole;
    A first conductive pattern provided along the decorative layer;
    A conductive connection portion provided between the sensor portion and the decorative portion and electrically connecting the lead-out pattern and the first conductive pattern;
    An external connection wiring portion electrically connected to the first conductive pattern and drawn out to the back surface of the support base via the through hole;
    An input device equipped with
  2.  前記導通接続部は異方性導電接着剤である、請求項1記載の入力装置。 The input device according to claim 1, wherein the conductive connection portion is an anisotropic conductive adhesive.
  3.  前記外部接続用配線部はフレキシブル配線基板である、請求項1または2に記載の入力装置。 The input device according to claim 1, wherein the external connection wiring portion is a flexible wiring board.
  4.  前記外部接続用配線部は前記貫通孔内に配置されたコネクタである、請求項1または2に記載の入力装置。 The input device according to claim 1, wherein the external connection wiring portion is a connector disposed in the through hole.
  5.  前記加飾層に沿って設けられた接地電極パターンと、
     前記加飾層に沿って設けられ、前記接地電極パターンと導通する第2導電パターンと、
     をさらに備え、
     前記第2導電パターンは前記接地電極パターンとの接続位置から前記貫通孔の上まで引き出され、
     前記外部接続用配線部は前記第2導電パターンと導通する、請求項1から4のいずれか1項に記載の入力装置。
    A ground electrode pattern provided along the decorative layer;
    A second conductive pattern provided along the decorative layer and electrically connected to the ground electrode pattern;
    And further
    The second conductive pattern is drawn from the connection position with the ground electrode pattern to above the through hole,
    The input device according to any one of claims 1 to 4, wherein the external connection wiring portion is electrically connected to the second conductive pattern.
PCT/JP2018/022898 2017-08-22 2018-06-15 Input device WO2019039057A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012247895A (en) * 2011-05-26 2012-12-13 Alps Electric Co Ltd Input device and manufacturing method of input device
JP2016057668A (en) * 2014-09-05 2016-04-21 日本精機株式会社 Display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012247895A (en) * 2011-05-26 2012-12-13 Alps Electric Co Ltd Input device and manufacturing method of input device
JP2016057668A (en) * 2014-09-05 2016-04-21 日本精機株式会社 Display device

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