EP2859432A1 - Système de capteur capacitif et écran tactile comprenant un système de capteur capacitif - Google Patents

Système de capteur capacitif et écran tactile comprenant un système de capteur capacitif

Info

Publication number
EP2859432A1
EP2859432A1 EP13719047.6A EP13719047A EP2859432A1 EP 2859432 A1 EP2859432 A1 EP 2859432A1 EP 13719047 A EP13719047 A EP 13719047A EP 2859432 A1 EP2859432 A1 EP 2859432A1
Authority
EP
European Patent Office
Prior art keywords
capacitive sensor
layers
capacitive
sensor arrangement
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.)
Withdrawn
Application number
EP13719047.6A
Other languages
German (de)
English (en)
Inventor
Thomas Reinle
Manfred SÜSS
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.)
Johnson Controls Automotive Electronics GmbH
Original Assignee
Johnson Controls Automotive Electronics GmbH
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 Johnson Controls Automotive Electronics GmbH filed Critical Johnson Controls Automotive Electronics GmbH
Publication of EP2859432A1 publication Critical patent/EP2859432A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H01G4/232—Terminals electrically connecting two or more layers of a stacked or rolled capacitor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/30—Stacked capacitors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0296—Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295
    • H05K1/0298—Multilayer circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/06—Lamination

Definitions

  • the invention relates to a capacitive sensor arrangement having at least one capacitive sensor and a coating applied to a front side of the at least one capacitive sensor.
  • the invention further relates to a touch-sensitive screen with at least one such capacitive sensor arrangement.
  • the touch-sensitive screens each comprise a display unit for displaying an image and a capacitive sensor arrangement for detecting touches of an operator.
  • the sensor arrangement is designed in such a way that upon contact with the latter, certain functions which are determined at predetermined positions and which are represented alphanumerically and symbolically at the same positions in the image are executed.
  • EP 1 81 1 364 A2 is a display device with
  • touch-sensitive surface which is a layer system for
  • the layer system is designed such that a capacitive and resistive readability is possible.
  • the layer system comprises a capacitive layer arrangement and a resistive
  • the capacitive sensor arrangement comprises at least one capacitive sensor and a coating applied to a front side of the at least one capacitive sensor. According to the invention comprises
  • Coating a multilayer layer structure which is formed of a plurality of layers arranged in layers and electrically connected in series capacitive layers.
  • the capacitive layers are directly on the front side of the capacitive
  • the capacitive layers each have the same individual electrical capacity.
  • the capacitive layers may also have a total capacity of the capacitive layers.
  • the capacitive layers of plastic and / or metal are formed and are thus characterized by a high
  • conductive layers and / or critical layers are separated by insulating layers to prevent diffusion or for other reasons. That's why all kinds of
  • Layers and a layer and layer structure can be used in arbitrary order, so that compared to a single-layer coating with higher Störkapaztician the reduced total capacity is achieved.
  • Under conductive layers are understood to be very thin metal layers or optically transparent metal layers. These have a low ohmic resistance and are electrically conductive. By diffusion, there is a risk that the conductive layers will change. This diffusion is avoided by the insulating layers.
  • critical layers are meant, for example, unstable layers, which oxidize in the presence of air. These are covered with insulating layers, can be stable and consistent
  • the capacitive layers are transparent, so that the capacitive sensor arrangement for
  • the capacitive layers are in particular formed as resist layers which are, for example, layers applied in a printing process.
  • the capacitive layers with a particularly small thickness and can be generated very easily with little effort. According to a possible development is between the capacitive
  • Layers each arranged an electrically insulating layer to electrically isolate the capacitive layers from each other and thus to minimize the individual capacitances of the layers and long term
  • the touch-sensitive screen according to the invention comprises at least one capacitive sensor arrangement according to the invention.
  • the input help can be an electrically conductive input pen or another special
  • Auxiliary for example, a prosthesis adapted to such operation.
  • the capacitive sensor arrangement is arranged on a front side or a rear side of a display unit.
  • the capacitive sensor arrangement is designed in particular in such a way that, when the sensor arrangement touches predetermined positions, specific functions are displayed which are displayed alphanumerically and symbolically on an image output by means of the display unit. This allows the multilayer
  • Figure 1 shows schematically a sectional view of a first
  • Figure 2 schematically a sectional view of a first embodiment of an inventive
  • touch-sensitive screen comprising a capacitive sensor arrangement according to FIG. 1,
  • FIG. 3 is a schematic sectional view of a second one
  • FIG. 4 is a sectional view of a second embodiment of a touch-sensitive screen according to the invention, comprising a capacitive sensor arrangement according to Figure 3.
  • FIG. 1 shows a sectional representation of a first exemplary embodiment of a capacitive sensor arrangement 1 according to the invention, which comprises a capacitive sensor 2.
  • the capacitive sensor 2 can be any type of capacitive sensor 2, in particular a capacitive sensor 2, which changes its electrical capacitance when touched by a finger or an input aid. This change in the capacitance between a touched and a pristine state of the sensor 2 is used to control a program flow of a not shown, coupled with the capacitive sensor 2 technical device.
  • the capacitive sensor 2 is provided on a front side with a multi-layer coating 3, which consists of several capacitive
  • the capacitive layers 3.1 to 3.n each have a capacitive coupling to each other and are in several layers arranged one above the other, so that there is a series connection of capacitors.
  • the layers 3.1 to 3.n can be layers of any kind, which are formed from plastic and / or metal and, in one possible embodiment, are transparent.
  • the layers 3.1 to 3.n are electrically conductive and electrical connected in series with each other.
  • the layers 3.1 to 3.n also in this embodiment each have a capacitive coupling to one another and form a series circuit of capacitors arranged one above the other in a plurality of layers.
  • the layers 3.1 to 3.n paint layers.
  • the layers 3.1 to 3.n are applied, for example, in a printing process directly on the capacitive sensor 2 or in an embodiment not shown on a arranged on the front side of the capacitive sensor 2 carrier plate.
  • electrically insulating layers 11, 12 are additionally arranged between the layers 3.1 to 3.n.
  • Layers 3.1 to 3.n reduces an effective total capacitance Cges compared to a single-layer or single-layer structure of the coating 3 according to the following equation, wherein a reciprocal of the
  • the coating 3 is formed for example from two capacitive layers 3.1, 3.2, which each have the same individual capacitance C1, C2, then the resulting total capacitance Cges is only half of one of the individual capacitances C1, C2. This total capacity Cges acts as
  • the coating 3 is formed from three capacitive layers 3.1, 3.2, 3.3, which each have the same individual capacitance C1, C2, C3, then the resulting total capacitance Cges is only one third of one of the individual capacitances C1, C2, C3. Due to the thus achieved reduction of the interference capacity compared to a single-layer coating 3 by two thirds of the sensor 2 is a further improved measurement signal with larger
  • the coating 3 is formed from four capacitive layers 3.1 to 3.4, which each have the same individual capacitance C1 to C4, then the resulting total capacitance Cges is only a quarter of one of the individual capacitances C1 to C4. Due to the reduction in the interference capacity compared with a single-layer coating 3 achieved by three quarters, the sensor 2 is compared to the embodiment with three layers 3.1 to 3.3 further improved measurement signal with a larger signal change and higher resolution at a touch of the capacitive sensor 2 detected and thus the susceptibility of the sensor assembly 1 is further reduced. Another advantage arises from the multi-layered training of
  • the effective total capacitance Cges would be so great that detection of a touch of the capacitive sensor 2 would be insufficient or even impossible since the change of a useful signal of the capacitive sensor 2 between untouched state and touched state is very small and thus difficult to detect.
  • a reproducible would be
  • the ideal total capacitance Cges of the coating 3 is zero, so that an increase in the number of capacitive layers 3.1 to 3.n leads to a continuous increase in the change in the useful signal of the capacitive sensor 2 between the untouched state and the touched state, ie. H. one
  • Figure 2 shows a sectional view of a first embodiment of a touch-sensitive screen according to the invention 4.
  • Screen 4 comprises a display unit 5, which is designed for example as an LCD display.
  • a display unit 5 which is designed for example as an LCD display.
  • other types of LCD such as an LCD display.
  • Display units 5 may be provided. On a front side of the display unit 5, the capacitive sensor arrangement 1 according to FIG. 1 is arranged.
  • the sensor arrangement 1, ie the capacitive sensor 2 and its coating 3, are transparent, so that in particular by means of the display unit 5
  • the capacitive sensor arrangement 1 is at a rear side of
  • Display unit 5 is arranged. The information displayed is stored in a connected to the screen 4, not shown control unit
  • control commands When the sensor arrangement 1 is touched, the capacitance of the capacitive sensor 2 changes, wherein a position of the contact on the sensor arrangement 1 can be determined from the magnitude of the change. From the determined position, it is derived which position the operator has selected on the image displayed by means of the display unit 5, and a control command assigned to the information displayed at this position is executed. By means of the control command the program flow of not shown and coupled to the screen 4 technical device is controlled.
  • FIG. 3 shows a sectional illustration of a second exemplary embodiment of the capacitive sensor arrangement 1 according to the invention, wherein in each case electrically insulating layers 11, 12 are additionally arranged between the layers 3.1 to 3.n. These allow a long-term minimization of the individual capacities C1 to Cn.
  • FIG. 4 shows a sectional view of a second exemplary embodiment of the touch-sensitive screen 4 according to the invention.
  • the capacitive sensor arrangement 1 according to FIG. 3 is arranged on a front side of the display unit 5. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Position Input By Displaying (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Electronic Switches (AREA)

Abstract

L'invention concerne un système de capteur capacitif (1) comprenant au moins un capteur capacitif (2) et un revêtement (3) déposé sur une face avant du ou des capteurs capacitifs (2). Selon l'invention, le revêtement (3) comprend une structure stratifiée multicouches constituée de plusieurs couches capacitives (3.1 à 3.n) superposées et reliées électriquement en série. L'invention concerne en outre un écran tactile (4) comprenant au moins un tel système de capteur capacitif (1).
EP13719047.6A 2012-06-09 2013-04-17 Système de capteur capacitif et écran tactile comprenant un système de capteur capacitif Withdrawn EP2859432A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012011626 2012-06-09
PCT/EP2013/057980 WO2013182342A1 (fr) 2012-06-09 2013-04-17 Système de capteur capacitif et écran tactile comprenant un système de capteur capacitif

Publications (1)

Publication Number Publication Date
EP2859432A1 true EP2859432A1 (fr) 2015-04-15

Family

ID=48190927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13719047.6A Withdrawn EP2859432A1 (fr) 2012-06-09 2013-04-17 Système de capteur capacitif et écran tactile comprenant un système de capteur capacitif

Country Status (7)

Country Link
US (1) US10133420B2 (fr)
EP (1) EP2859432A1 (fr)
JP (2) JP6104370B2 (fr)
KR (1) KR101758709B1 (fr)
CN (1) CN104620209B (fr)
IN (1) IN2014DN10473A (fr)
WO (1) WO2013182342A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2859432A1 (fr) * 2012-06-09 2015-04-15 Johnson Controls Automotive Electronics GmbH Système de capteur capacitif et écran tactile comprenant un système de capteur capacitif
US10480962B2 (en) 2017-04-21 2019-11-19 Capsule Technologies, Inc. Electronic device including a capacitive sensor in a housing

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US20100238602A1 (en) * 2009-03-20 2010-09-23 Mircea Capanu Electrostrictive Resonance Suppression for Tunable Capacitors

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EP1476885A1 (fr) * 2002-01-24 2004-11-17 Toray Plastics (America), Inc. Films pour condensateurs a enrobage polymere
CN1324449C (zh) 2004-08-31 2007-07-04 义隆电子股份有限公司 电容式触控板的省电结构及省电方法
DE102006000637A1 (de) 2006-01-03 2007-07-05 Robert Bosch Gmbh Anzeigevorrichtung mit Berührung sensitiver Oberfläche
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TWI317086B (en) 2006-04-14 2009-11-11 Ritdisplay Corp Top-emitting organic led display having transparent touch panel
JP2009086752A (ja) 2007-09-27 2009-04-23 Seiko Precision Inc 照光式タッチパネル及び照光式タッチパネルの製造方法
US8120891B2 (en) * 2007-12-17 2012-02-21 Murata Manufacturing Co., Ltd. Multilayer capacitor having low equivalent series inductance and controlled equivalent series resistance
JP2010086236A (ja) 2008-09-30 2010-04-15 Casio Computer Co Ltd タッチパネル
KR20100053349A (ko) * 2008-11-12 2010-05-20 엘지전자 주식회사 터치 모듈, 그 터치 모듈의 제조 방법 및 그 터치 모듈을 갖는 휴대 단말기
JP4958020B2 (ja) * 2009-03-31 2012-06-20 大日本印刷株式会社 タッチパネルセンサ、タッチパネルセンサを作製するための積層体、および、タッチパネルセンサの製造方法
TWI528249B (zh) 2009-04-15 2016-04-01 財團法人工業技術研究院 觸控裝置之結構
WO2011059748A2 (fr) * 2009-10-28 2011-05-19 E Ink Corporation Dispositifs d'affichage électro-optiques avec des capteurs tactiles
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EP2859432A1 (fr) * 2012-06-09 2015-04-15 Johnson Controls Automotive Electronics GmbH Système de capteur capacitif et écran tactile comprenant un système de capteur capacitif

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Publication number Priority date Publication date Assignee Title
WO1998000871A1 (fr) * 1996-06-27 1998-01-08 Gennum Corporation Structures de condensateurs a film multicouches et procede s'y rapportant
US20100238602A1 (en) * 2009-03-20 2010-09-23 Mircea Capanu Electrostrictive Resonance Suppression for Tunable Capacitors

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Also Published As

Publication number Publication date
US10133420B2 (en) 2018-11-20
WO2013182342A1 (fr) 2013-12-12
JP2015520460A (ja) 2015-07-16
KR101758709B1 (ko) 2017-07-18
IN2014DN10473A (fr) 2015-08-21
JP2017062853A (ja) 2017-03-30
CN104620209A (zh) 2015-05-13
JP6104370B2 (ja) 2017-03-29
CN104620209B (zh) 2018-04-24
US20150185908A1 (en) 2015-07-02
KR20150029698A (ko) 2015-03-18

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