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WO2011159032A2 - Capteur tactile - Google Patents

Capteur tactile Download PDF

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Publication number
WO2011159032A2
WO2011159032A2 PCT/KR2011/003702 KR2011003702W WO2011159032A2 WO 2011159032 A2 WO2011159032 A2 WO 2011159032A2 KR 2011003702 W KR2011003702 W KR 2011003702W WO 2011159032 A2 WO2011159032 A2 WO 2011159032A2
Authority
WO
WIPO (PCT)
Prior art keywords
pet
terminal
pet film
touch sensor
touch
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2011/003702
Other languages
English (en)
Korean (ko)
Other versions
WO2011159032A3 (fr
Inventor
채기원
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUMAN ELECTRONICS CO Ltd
Original Assignee
HUMAN ELECTRONICS CO Ltd
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
Priority claimed from KR2020100011680U external-priority patent/KR200453299Y1/ko
Application filed by HUMAN ELECTRONICS CO Ltd filed Critical HUMAN ELECTRONICS CO Ltd
Publication of WO2011159032A2 publication Critical patent/WO2011159032A2/fr
Publication of WO2011159032A3 publication Critical patent/WO2011159032A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1632—External expansion units, e.g. docking stations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • H03K17/9622—Capacitive touch switches using a plurality of detectors, e.g. keyboard
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/96015—Constructional details for touch switches
    • H03K2217/96019—Constructional details for touch switches using conductive paint
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960755—Constructional details of capacitive touch and proximity switches

Definitions

  • the present invention relates to a touch sensor, and more particularly, to a touch sensor that has a simple configuration and is connected to an IC by reading a unique resistance value generated when a user touches it by hand.
  • control and communication devices or electronic devices including mobile communication terminals, electronic notebooks and calculators, are provided with an input device consisting of a plurality of button switches to input operation commands according to a user's operation.
  • the input device is configured to press the plurality of button switches at a predetermined pressure, the command input is made correctly only by pressing the button switch desired by the user.
  • the capacitive touch sensor operates by detecting a change in capacitance generated when a body or a specific object comes into contact with each other, and changes in minute capacitance and existing set values generated when the touch surface is touched. Detects the difference and marks the final output as high or low to generate a switching signal.
  • the conventional capacitive touch sensor has a structure that generates a switching signal by using the change in capacitance between the upper and lower pole plates, the overall configuration including the two pole plates and the dielectric between them is relatively large thickness There was a problem that occupy.
  • the touch screen is attached to and fixed to the rear side of the lower end or one side end of the screen to be displayed.
  • the touch sensor having the structure described above is required to be prevented from falling off the surface of the flat panel display during its use due to its mechanical configuration and its volume and weight.
  • the present invention provides a touch sensor comprising: a plurality of touch circuit parts formed by printing conductive ink on a PET (Polyethylene Terephthalate) film; A conductive ink is printed on the PET film to form a plurality of signal lines respectively connected to the plurality of touch circuit units, and the plurality of signal lines are formed by focusing on one end of the PET film to connect with an external integrated circuit (IC).
  • PET terminal unit is inserted into the connector (connector) for;
  • a protective coating layer formed on at least the PET film on which the plurality of touch circuit units are formed;
  • it provides a touch sensor comprising a terminal reinforcing plate made of a synthetic resin material bonded to the PET terminal portion through a predetermined adhesive.
  • the present invention provides a touch sensor, comprising: a plurality of touch circuit parts formed by printing conductive ink on a PET (Polyethylene Terephthalate) film; A PET terminal part on which the conductive ink is printed on the PET film to form a plurality of signal lines respectively connected to the plurality of touch circuit parts, and the plurality of signal lines are focused on one end of the PET film; A protective coating layer formed on at least the PET film on which the plurality of touch circuit units are formed; And made of a harder material than the PET film is inserted into a connector (connector) for connecting to an external integrated circuit (IC), a plurality of terminal lines are formed on one surface is bonded to the PET terminal by a predetermined adhesive to the It provides a touch sensor, characterized in that it comprises a flexible printed circuit board (FPCB) terminal plate that a plurality of terminal lines are in contact with each of the plurality of signal lines of the PET terminal unit and electrically connected.
  • FPCB flexible printed circuit board
  • the predetermined adhesive is an anisotropic conductive paste (ACP), and the FPCB terminal plate is attached on the PET terminal portion to which the anisotropic conductive paste is applied, and then the anisotropy is applied by external pressure and heating.
  • the conductive paste may be cured to be integrated with the PET terminal portion.
  • the anisotropic conductive paste has a property of being heat cured in the range of 100 ° C to 120 ° C.
  • a protective tape may be additionally attached to the surface on which the PET terminal portion and the FPCB terminal plate are attached.
  • the touch sensor according to the present invention as described above, it is possible to provide a touch sensor that is flexible and significantly thinner by printing a touch circuit part with conductive ink on a PET film and connecting with an external IC.
  • the touch sensor has a simple configuration, not only the manufacturing process can be simplified and the manufacturing cost can be reduced, but also a device such as an FPD to which it is applied can be simply manufactured.
  • the touch sensor according to the present invention since the touch sensor according to the present invention only needs to be attached to the surface of the application object like a tape, it can be widely applied to various and complicated home appliances, and also it can maintain a light and firmly attached state to external impact during use. The phenomenon of falling off can be largely prevented.
  • the touch sensor according to the present invention can solve the problem of the electrical connection with the outside due to the use of the PET film by using a relatively hard terminal reinforcement plate on the PET terminal portion connected to the external component.
  • the problem of difficulty in electrical connection with the outside due to the use of the PET film can also be solved by a method of adhering a hard FPCB terminal plate to the PET terminal portion.
  • FIG. 1 is a plan view of a touch sensor according to a first embodiment of the present invention
  • FIG. 2 is an enlarged exploded view of a part of the touch sensor of FIG. 1;
  • FIG. 3 is a plan view of a touch sensor according to a second embodiment of the present invention.
  • FIG. 4 is a partially enlarged coupling diagram of the touch sensor of FIG. 3.
  • the touch sensor 10 includes a PET film 11, a plurality of touch circuit units 12, and a signal line formed on the PET film 11. It comprises a (13).
  • the polyethylene terephthalate (PET) film 11 is particularly used to secure the flexibility of the touch sensor 10.
  • the PET film 11 having such excellent flexibility can be suitably used for attaching to various shapes of object surfaces.
  • FPD flat display panel
  • a plurality of touch circuit sections 13 are formed by printing conductive ink on the PET film 11.
  • electroconductive ink is what disperse
  • touch circuit units 12 are arranged at regular intervals in the horizontal direction, but the present invention is not limited thereto, and the touch circuit units 12 may be formed in various shapes and numbers according to the function and design of the touch panel of the object such as an LCD panel. It is formed to be arranged.
  • each of the touch sensors 10 includes a plurality of signal lines 13 connected to the plurality of touch circuit units 12 one-to-one.
  • These signal lines 13 are also formed by printing conductive ink on the PET film 11 similarly to the touch circuit portion 12 described above.
  • signal lines 13 are formed simultaneously with the touch circuit portion 12 by printing a conductive ink on a PET film.
  • Each signal line 13 transmits an electrical signal to the corresponding touch circuit unit 12, and is also responsible for transferring a change of the touch circuit unit 12 to an external integrated circuit (IC).
  • IC integrated circuit
  • These signal lines 13 form a PET terminal portion 14 so as to be focused at one end (left end in the figure) of the PET film 11 and connected to an external IC.
  • the PET terminal portion 14 is simply a converging structure of the signal line 13 on which conductive ink is printed on one end of the PET film 11, the PET terminal portion 14 can be used as a connection terminal due to its thin and easily bent characteristic unique to PET film. There may be a problem of inadequacy.
  • the present invention is characterized in that it further comprises a terminal reinforcing plate 15 attached integrally on the PET terminal portion 14 as described above (see Fig. 2).
  • the terminal reinforcing plate 15 is made of a thicker synthetic resin material than the PET film 11, and is attached to the PET terminal part 14 through a predetermined adhesive.
  • a UV coating layer (not shown) is coated to a predetermined thickness on the PET film 11 on which the plurality of touch circuit units 12 and the signal lines 13 are formed.
  • the UV coating layer functions as a protective coating layer for protecting the touch circuit unit 12 and the signal line 13 from external impact or corrosive substances.
  • the UV coating layer has an insulating function per se, so that the touch circuit unit 12 can generate its own resistance value without being affected by other external influences other than being touched by itself.
  • the resistance value generated in the touch circuit portion 12 by the touch is transmitted to the external IC connected through the signal line 13 and the PET terminal portion 14.
  • each circuit unit when the user touches the touch circuit unit 12, each circuit unit generates a unique resistance value as a touch button, the generated resistance The value functions as a drive signal transmitted to the touch IC via the signal line 13.
  • the touch sensor 10 since the touch sensor 10 does not need two pole plates in the touch area unlike the related art, the touch sensor 10 can be mounted as if the sheet is compactly attached as a button display unit disposed on one side of the screen of the display device.
  • the manufacturing process of the input device (touch screen) of the display device is not only easy, but also very light in weight, very thin, and flexible PET material, which achieves compactness when attached to the display device and improves durability in terms of use. Can be represented.
  • the touch sensor 10 attaches a relatively hard terminal reinforcement plate 15 to the PET terminal portion 14 to which the external component is connected so that the PET terminal portion 14 can be easily inserted into an external connector. In addition, a stable electrical connection can be achieved.
  • a flexible printed circuit board (FPCB) is provided on the PET terminal portion 14'. ) The method of adhering the terminal plate 17 is used.
  • the FPCB terminal plate 17 may be made of a conventional FPCB material such as polyester and polyimide, and thus may have a harder property than the PET film 11.
  • the PET terminal portion 14 'and the FPCB terminal plate 17 are adhered to each other through a predetermined adhesive.
  • each terminal line 18 on the FPCB terminal plate 17 is electrically connected to each other by contacting each signal line on the PET terminal portion 14 '.
  • an anisotropic conductive paste (ACP) may be used as the adhesive.
  • the anisotropic conductive paste is cured by pressing and heating through a press device or the like to form the FPCB terminal plate ( 17) and the PET terminal portion 14 'are integrated.
  • anisotropic conductive paste is a liquid bonding material in which conductive balls are dispersed in a binder having fluidity. ]. It is preferable to have the property of heat-hardening in the range of -120 [degreeC].
  • the temperature range is the same as the processing temperature that the PET film is handled in the manufacturing process for manufacturing the touch sensor of the present invention, it can be said that the safety range does not occur deformation or breakage of the PET film.
  • the touch sensor 10 'according to the present embodiment using a PET film is subjected to a processing environment of 100 [° C.] to 120 [° C.] in the manufacturing process, and thus an adhesive for bonding the FPCB terminal plate 17.
  • a processing environment 100 [° C.] to 120 [° C.] in the manufacturing process, and thus an adhesive for bonding the FPCB terminal plate 17.
  • an anisotropic electrically conductive paste of said conditions it can be said that it is optimal.
  • a protective tape 16 may be further attached to the surfaces of the PET terminal portion 14 ′ and the FPCB terminal plate 17 bonded by the above method.
  • the protective tape 16 may be attached to both the upper and lower surfaces to which the PET terminal portion 14 ′ and the FPCB terminal plate 17 are bonded.
  • a relatively hard FPCB terminal plate 17 is adhered onto an PET terminal portion 14 ′ connected to an external component by using an anisotropic conductive paste or the like.
  • touch sensors 10 and 10 ′ according to the first and second embodiments described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention.

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

Abstract

La présente invention concerne un capteur tactile comprenant : une pluralité d'unités de circuit tactile formées en imprimant une encre conductrice sur un film de polyéthylène téréphtalate (PET) ; une unité terminale de PET insérée à l'intérieur d'un connecteur pour servir de connexion avec un circuit intégré externe (IC), l'unité terminale de PET étant formée en formant une pluralité de lignes de signal connectées respectivement à la pluralité d'unités de circuit tactile en imprimant une encre conductrice sur le film de PET et en concentrant la pluralité de lignes de signal sur une partie terminale du film de PET ; une couche protectrice de revêtement formée sur le film de PET sur laquelle sont formées la pluralité d'unités de circuit tactile et l'unité terminale de PET ; et une plaque de renforcement terminale liée à l'unité terminale de PET en utilisant un adhésif prédéterminé, la plaque de renforcement terminale étant plus épaisse que le film de PET et étant formée d'une résine dure de synthèse. Par conséquent, le capteur tactile est simplifié. De ce fait, le volume et le poids du capteur tactile sont minimisés, la liaison à une cible est facile, et le décollement pendant l'utilisation du capteur tactile peut être empêché. De plus, grâce à la plaque de renforcement terminale liée à l'unité terminale de PET, le problème de la difficulté du maintien d'une connexion électrique avec l'extérieur, à cause du film de PET utilisé comme matériau de capteur tactile, peut être résolu.
PCT/KR2011/003702 2010-06-16 2011-05-19 Capteur tactile Ceased WO2011159032A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20-2010-0006323 2010-06-16
KR20100006323 2010-06-16
KR20-2010-0011680 2010-11-12
KR2020100011680U KR200453299Y1 (ko) 2010-06-16 2010-11-12 터치센서

Publications (2)

Publication Number Publication Date
WO2011159032A2 true WO2011159032A2 (fr) 2011-12-22
WO2011159032A3 WO2011159032A3 (fr) 2012-02-16

Family

ID=45348700

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/003702 Ceased WO2011159032A2 (fr) 2010-06-16 2011-05-19 Capteur tactile

Country Status (1)

Country Link
WO (1) WO2011159032A2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7477242B2 (en) * 2002-05-20 2009-01-13 3M Innovative Properties Company Capacitive touch screen with conductive polymer
US9710095B2 (en) * 2007-01-05 2017-07-18 Apple Inc. Touch screen stack-ups
EP2056186A1 (fr) * 2007-10-26 2009-05-06 Research In Motion Limited Écran tactile et dispositif électronique
KR100982543B1 (ko) * 2008-11-26 2010-09-15 동아대학교 산학협력단 터치 입력부를 이용한 기호 입력 장치 및 방법.

Also Published As

Publication number Publication date
WO2011159032A3 (fr) 2012-02-16

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