WO2004061808A3 - Lattice touch-sensing system - Google Patents

Lattice touch-sensing system Download PDF

Info

Publication number
WO2004061808A3
WO2004061808A3 PCT/US2003/035603 US0335603W WO2004061808A3 WO 2004061808 A3 WO2004061808 A3 WO 2004061808A3 US 0335603 W US0335603 W US 0335603W WO 2004061808 A3 WO2004061808 A3 WO 2004061808A3
Authority
WO
WIPO (PCT)
Prior art keywords
touch
sensing
sensing system
layer
lattice
Prior art date
Application number
PCT/US2003/035603
Other languages
French (fr)
Other versions
WO2004061808A2 (en
Inventor
Roger C Mulligan
Badaye Massoud
Alex K Wong
Brian G Lim
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to EP03768772A priority Critical patent/EP1576570A3/en
Priority to JP2004564886A priority patent/JP2006511879A/en
Priority to AU2003291378A priority patent/AU2003291378A1/en
Publication of WO2004061808A2 publication Critical patent/WO2004061808A2/en
Publication of WO2004061808A3 publication Critical patent/WO2004061808A3/en

Links

Classifications

    • 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
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • 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

Abstract

This invention is directed to a lattice touch-sensing system for detecting a position of a touch on a touch-sensitive surface. The lattice touch-sensing system may include two capacitive sensing layers, separated by an insulating material, where each layer consists of substantially parallel conducting elements, and the conducting elements of the two sensing layers are substantially orthogonal to each other. Each element may comprise a series of diamond shaped patches that are connected together with narrow conductive rectangular strips. Each conducting element of a given sensing layer is electrically connected at one or both ends to a lead line of a corresponding set of lead lines. A control circuit may also be included to provide an excitation signal to both sets of conducting elements through the corresponding sets of lead lines, to receive sensing signals generated by sensor elements when a touch on the surface occurs, and to determine a position of the touch based on the position of the affected bars in each layer.
PCT/US2003/035603 2002-12-19 2003-11-06 Lattice touch-sensing system WO2004061808A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03768772A EP1576570A3 (en) 2002-12-19 2003-11-06 Lattice touch-sensing system
JP2004564886A JP2006511879A (en) 2002-12-19 2003-11-06 Lattice touch sensing system
AU2003291378A AU2003291378A1 (en) 2002-12-19 2003-11-06 Lattice touch-sensing system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/324,728 US6970160B2 (en) 2002-12-19 2002-12-19 Lattice touch-sensing system
US10/324,728 2002-12-19

Publications (2)

Publication Number Publication Date
WO2004061808A2 WO2004061808A2 (en) 2004-07-22
WO2004061808A3 true WO2004061808A3 (en) 2005-09-22

Family

ID=32593533

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/035603 WO2004061808A2 (en) 2002-12-19 2003-11-06 Lattice touch-sensing system

Country Status (7)

Country Link
US (1) US6970160B2 (en)
EP (1) EP1576570A3 (en)
JP (1) JP2006511879A (en)
KR (1) KR20050084370A (en)
CN (1) CN1754141A (en)
AU (1) AU2003291378A1 (en)
WO (1) WO2004061808A2 (en)

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