WO2003049019A3 - System and method for locating a touch on a capacitive touch screen - Google Patents

System and method for locating a touch on a capacitive touch screen Download PDF

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Publication number
WO2003049019A3
WO2003049019A3 PCT/US2002/030265 US0230265W WO03049019A3 WO 2003049019 A3 WO2003049019 A3 WO 2003049019A3 US 0230265 W US0230265 W US 0230265W WO 03049019 A3 WO03049019 A3 WO 03049019A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
touch
bar
lead lines
bars
Prior art date
Application number
PCT/US2002/030265
Other languages
French (fr)
Other versions
WO2003049019A2 (en
Inventor
Roger C Mulligan
Massoud Badaye
Brian G W 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 EP02804391A priority Critical patent/EP1461765A2/en
Priority to JP2003550139A priority patent/JP2005512198A/en
Priority to AU2002334656A priority patent/AU2002334656A1/en
Publication of WO2003049019A2 publication Critical patent/WO2003049019A2/en
Publication of WO2003049019A3 publication Critical patent/WO2003049019A3/en

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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads

Abstract

Described is a touch-sensitive screen having a sensing circuit capable of discriminating where a perturbation of an electric field created by the sensing circuit occurs. The invention may be implemented in a capacitive touch sensor in which each of multiple conductive sensor bars is connected to a conductive lead line. There are fewer lead lines than sensor bars. Thus, at least one and likely several lead lines are connected to more than one sensor bar. The particular connections of lead lines to sensor bars are selected to avoid ambiguity created by a given signal being possibly generated on more than a single conductive bar. More specifically, the invention provides a technique for laying out lead line to sensor bar connections to enable distinguishing which sensor bar, having common lead lines with other sensor bars, has experienced or is closest to a touch on the sensor.
PCT/US2002/030265 2001-11-30 2002-09-24 System and method for locating a touch on a capacitive touch screen WO2003049019A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02804391A EP1461765A2 (en) 2001-11-30 2002-09-24 System and method for locating a touch on a capacitive touch screen
JP2003550139A JP2005512198A (en) 2001-11-30 2002-09-24 System and method for locating a touch on a capacitive touch screen
AU2002334656A AU2002334656A1 (en) 2001-11-30 2002-09-24 System and method for locating a touch on a capacitive touch screen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/998,614 2001-11-30
US09/998,614 US6825833B2 (en) 2001-11-30 2001-11-30 System and method for locating a touch on a capacitive touch screen

Publications (2)

Publication Number Publication Date
WO2003049019A2 WO2003049019A2 (en) 2003-06-12
WO2003049019A3 true WO2003049019A3 (en) 2003-07-31

Family

ID=25545409

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/030265 WO2003049019A2 (en) 2001-11-30 2002-09-24 System and method for locating a touch on a capacitive touch screen

Country Status (7)

Country Link
US (1) US6825833B2 (en)
EP (1) EP1461765A2 (en)
JP (1) JP2005512198A (en)
KR (1) KR20050030620A (en)
CN (1) CN1596413A (en)
AU (1) AU2002334656A1 (en)
WO (1) WO2003049019A2 (en)

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Also Published As

Publication number Publication date
US20030103043A1 (en) 2003-06-05
EP1461765A2 (en) 2004-09-29
WO2003049019A2 (en) 2003-06-12
CN1596413A (en) 2005-03-16
JP2005512198A (en) 2005-04-28
US6825833B2 (en) 2004-11-30
KR20050030620A (en) 2005-03-30
AU2002334656A1 (en) 2003-06-17

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