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WO1992013328A1 - Ecran tactile capacitif - Google Patents

Ecran tactile capacitif Download PDF

Info

Publication number
WO1992013328A1
WO1992013328A1 PCT/US1992/000257 US9200257W WO9213328A1 WO 1992013328 A1 WO1992013328 A1 WO 1992013328A1 US 9200257 W US9200257 W US 9200257W WO 9213328 A1 WO9213328 A1 WO 9213328A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
touch screen
thin
capacitive touch
film
Prior art date
Application number
PCT/US1992/000257
Other languages
English (en)
Inventor
Wayne W. Maw
Original Assignee
Rgb Dynamics
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 Rgb Dynamics filed Critical Rgb Dynamics
Publication of WO1992013328A1 publication Critical patent/WO1992013328A1/fr

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
    • 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

Definitions

  • the present invention relates to computer touch screens and control panels, and more particularly, the present invention relates to a capacitive touch screen for use at computer terminals and/or control panels.
  • Capacitive touch screens are used in a variety of computerized systems as a means of providing user interface at computer terminals, control panels and the like. Such 5 capacitive touch screens operate on the principle that when a user touches a screen or control panel there is a change in the effective capacitance of an RC circuit. The change in the effective capacitance of the RC circuit in turn changes the oscillation frequency of an oscillator circuit, 0 which can then be detected so as to sense the area of the screen or control panel that has been touched. This accordingly allows various kinds of input and control signals to be effectively provided to the computer system by the simple expedient of having the user touch the
  • the indium tin oxide layer is typically patterned by either chemical etching or by etching the thin-film conductive layer with a laser so as to provide various capacitive areas on the user interface side of the screen which are touch-sensitive.
  • the glass layer opposite or back side of the glass layer there is typically deposited another thin-film layer of indium tin oxide which uniformly covers the other side of the glass layer.
  • the uniform layer of indium tin oxide which is on the back side of the screen is typically electrically connected to earth ground so that that layer of conductive material acts as a grounded capacitor plate with the glass layer serving as a dielectric material between the grounded capacitor plate and various capacitive touch-sensitive areas which are patterned on the front user interface side of the screen.
  • The- un ifor conductive layer on the back side of the screen also serves as a shield for filtering radio frequency interference or noise from the control circuitry and/or cathode ray circuitry and apparatus.
  • indium tin oxide When indium tin oxide is deposited at an extremely thin thickness (on the order of several hundred A) , the ITO will remain conductive but is optically transparent so that, for example, light emitting diodes or the beam of a cathode ray can still be visually perceived through the thin-film layer.
  • the coating of indium tin oxide is so thin (typically on the order of 400 A) over time the layer that is patterned on the user interface side of the screen will begin to wear and may also be easily scratched or damaged. This in turn will decrease the effectiveness of the various touch-sensitive capacitive areas that are used for user control.
  • capacitive touch screens are intended for use in very tightly controlled environments such as industrial clean rooms or in certain types of other sterile conditions such as may be encountered in the medical field.
  • users are often required to use thin, skin ⁇ tight rubber gloves and when doing so the rubber glove, which is itself a dielectric, may significantly reduce the level of capacitance that is to be sensed, to the point where it may be difficult for the control circuitry to discriminate when a user is attempting to activate one of the touch-sensitive areas on the screen.
  • Still a further object of the present invention is to provide a capacitive touch screen which effectively reduces 0 the potential of user injury from broken glass in the event that the screen should be shattered.
  • Yet another important object of the present invention is to provide a capacitive touch screen which can be effectively used in environments such as clean rooms or the like where users are required to use thin rubber gloves as well as in environments where the use of gloves is not required, without having to alter detection algorithms to accommodate such differing environments. 5
  • oxide layer on one of the substrates is positioned so as to be on the back side of the screen and is uniformly deposited on that side so as to form an essentially continuous conductive layer which serves as the grounded plate of a capacitor and which also serves to filter radio
  • the other thin-film indium tin oxide layer is patterned and serves as the active conductive layer performing the various touch-sensitive capacitive areas which will be activated by a user at the user interface side of the screen.
  • 25 sensitive layer of thin-film indium tin oxide is positioned so that the glass substrate on which it is deposited faces outwardly and becomes the user interface side of the screen, thereby positioning the active conductive layer on the inside of the screen so as to be protected from wear due to touching by the user as well as thereby being
  • the two glass substrates are laminated together using an optically clear laminating material such as polyurethane or polyvinylbutelate (PVB) .
  • an optically clear laminating material such as polyurethane or polyvinylbutelate (PVB) .
  • FIG. 1 is a perspective view of one presently preferred embodiment of the capacitive touch screen of the present invention, illustrating in particular the various
  • Figure 2 is an enlarged perspective view of a portion of the capacitive touch screen of Figure 1 with the portion along line 2-2 of Fig. 1 broken away to reveal the cross- sectional structure of the screen in greater detail, as well as illustrating in greater detail the touch-sensitive 0 areas which are patterned on the screen.
  • Figure 3 is an enlarged cross-sectional view which more particularly illustrates the various layers from which the capacitive touch screen of Figure 1 is constructed.
  • Figure 4 is an exploded perspective view which more 5 particularly illustrates several of the layers for purposes of depicting how the touch-sensitive areas are protected on an interior surface of one of the layers of the screen.
  • Figure 5 is an enlarged cross-sectional view which illustrates a second presently preferred embodiment of the capacitive touch screen of the present invention.
  • Figure 6 is a perspective view of the capacitive touch screen of the embodiment of Figure 6.
  • Figure 7 is an enlarged perspective view with portions broken away in the region of line 7-7 in Figure 6 so as to more particularly illustrate the cross-sectional structure of the embodiment of Figure 6 as well as more particularly illustrating the outer most touch-sensitive capacitive areas of that embodiment.
  • Figure 8 is an enlarged cross-sectional view of a third presently preferred embodiment of a capacitive touch screen constructed in accordance with the present invention.
  • Figure 9 is an enlarged cross-sectional view of a further embodiment of a capacitive touch screen which may be constructed in accordance with the present invention.
  • Figure 10 is an enlarged cross-sectional view of still another embodiment of the present invention.
  • the capacitive touch screen of the present invention is illustrated in one presently preferred embodiment thereof as a curved screen for use, for example, at a computer terminal or the like.
  • the capacitive touch screen is generally designated at 10 ⁇ and includes a plurality of capacitive touch-sensitive areas as generally designated at 12.
  • the capacitive touch-sensitive areas 12 are typically patterned so a ⁇ to form a plurality of discrete touch-sensitive areas 12a-12e.
  • Capacitive touch-sensitive areas 12a-12c each constitute areas which can be discretely detected when the screen is touched by a user.
  • Touch-sensitive areas 12d and 12e are typically electrically connected so that together they form a single touch-sensitive area which can be activated.
  • each of the touch- sensitive areas 12a-l2e are formed on the thin-film conductive coating, as hereinafter more fully described, which is deposited on one of the discrete layers of the screen.
  • the thin-film conductive coating is etched either chemically or, for example, by laser etching so as to form the discrete touch-sensitive areas 12a-12b. Further, the etched pattern also forms conductive runs 14a-14c which terminate at a peripheral edge in conductive terminals 16a- 16e.
  • the conductive terminals 16a-16e provide the connecting points to the control circuitry (not shown) which is used for purposes of detection and input to the control circuitry and computer system.
  • the areas which are represented at 18 are indicative of the portions of the thin-film conductive coating which are removed by the etching process so as to form the touch-sensitive areas 12a-12e as well as the conductive runs 14a-14c and conductive terminals 16a-16e.
  • the capacitive touch screen 10 comprises a first thin-film conductive means for providing a grounded capacitor plate layer.
  • the first thin- film conductive means for providing the grounded capacitive plate layer is comprised of a thin-film conductive coating of indium tin oxide which is on the order of about 400 A thick.
  • the thin-film conductive layer comprises a uniform coating which is typically connected to earth ground.
  • the thin-film conductive coating 20 in addition to providing a grounded capacitor plate layer, also serves as a shield for filtering to ground radio frequency interference and noise which may be generated by the cathode ray and computer control circuitry.
  • the first thin-film conductive means can also in some circumstances be comprised of a tin oxide layer which may typically be on the order of about 500 A to 5,000 A thick, and is preferably 3,000 A.
  • the capacitive touch screen 10 comprises a second thin-film conductive means for providing a patterned touch-sensitive capacitive layer.
  • the second thin-film conductive means is comprised of a second thin-film coating of indium tin oxide 22 which is also on the order of about 400 A thick.
  • indium tin oxide tends to still be an effective electrical conductor but also is thin enough so that it is optically transparent so that for example, a cathode ray or a light emitting diode which must be viewed through the touch screen will not be visually blocked or impaired.
  • the second thin-film conductive means may also be comprised, for example, of a conductive coating of tin oxide which may be in the range of 500 A to 5,000 A thick.
  • the capacitive touch screen 10 is comprised of a first dielectric means for providing an essentially continuous dielectric layer interposed between the first and second conductive means.
  • the first dielectric means is comprised, for example, of a first glass substrate layer 24a and a lamination layer 24b.
  • the first glass substrate layer 24a is preferably on the order of about .062 inches thick and the lamination layer 24b is preferably on the order of about .015 inches thick.
  • the capacitive touch screen 10 is comprised of a second dielectric means formed over the second conductive means for providing an optically transparent layer which is thick enough and hard enough to protect the second conductive means from damage due to static electric discharge from a user and from damage due to surface wear and scratching, and which therefore has a substantial thickness typically on the order of at least .005 inches or greater.
  • the second dielectric means is comprised, for example, of a second glass substrate layer 26 which is preferably .062 inches thick.
  • each of the layers is curved so that the overall capacitive touch screen 10 can be implemented in connection with a computer terminal or the like. As will be seen best in reference to Figures
  • the thin-film conductive coating 20 which is deposited on the first glass substrate layer 24a is formed on the back side of the screen.
  • the thin-film conductive layer 20 as noted above forms the grounded capacitor plate layer of the capacitive touch screen.
  • the various touch-sensitive capacitive areas which are patterned on the thin-film conductive coating 22 are not formed directly on the outer surface of the glass substrate layer 26, but rather, contrary to conventional technology, are formed on the inside surface of the second glass substrate layer 26.
  • the two substrates are then laminated together using the laminating material 24b using conventional vacuum autoclaving apparatus.
  • the touch-sensitive capacitive areas which are patterned on the thin-film conductive layer 22 are located completely internally on the screen, they are not subject to wear from the user's touch nor are they subject to degradation due to exposure to harsh environments such as chemicals or abrasives. This virtually eliminates any wear of the thin-film conductive coating 22 over the life of the touch screen.
  • the second glass substrate 26 is a dielectric
  • the thickness Dl of the glass substrate which is substantial (typically on the order of .005 of an inch or thicker and preferably in the range of .062 inches), effectively serves to protect the thin-film layer 22 from static electric discharge which may occur when a user touches the screen.
  • the dielectric material of the second glass substrate 26 will insulate the thin-film conductive coating 22. Accordingly, this eliminates the need for additional electronic components and complexity in the electronic control circuitry which is external to the screen.
  • the effective capacitance which is provided by the dielectric characteristic of the second glass substrate 26 is high enough so that the difference between touching the user interface side of the screen either with or without a thin rubber glove on the hand of the user will not make any significant difference in the relative capacitive values which are otherwise sensed, thereby rendering the capacitive touch screen useful in a wider variety of environments and applications without having to devise separation detection algorithms for those differing environments.
  • the thickness of the two glass substrates 24a and 26 be virtually the same in order to simplify the manufacturing procedure, the scope of the invention is not limited to that preferred thickness for the two glass substrate layers 24a and 26.
  • Various design considerations may be taken into account in determining the relative thicknesses of the two glass substrate layers 24a and 26, such as, for example, the fact that the distance D2 provides a parasitic capacitance because of the dielectric characteristics of the glass substrate 24a.
  • the parasitic capacitance should provide on one hand a sufficient capacitive value so as to lend some stability to the oscillation circuitry (not shown) but on the other hand should not be so great as to adversely effect the ability to detect the changing capacitance when the user interface side of the screen is touched.
  • a further consideration to be taken into account, particularly in relation to the thickness of the second glass substrate layer 26, is the ability to laminate that layer without having a rejection rate which is too high due to breakage of the glass as the thickness is decreased. It is presently anticipated, for example, that the range of thickness for the glass substrate layer 26 may be anywhere from .005 inches thick and greater.
  • a second embodiment as generally designated at 10a is illustrated in Figures 5-7.
  • the capacitive touch screen 10a is identical to the embodiment of Figures 1-4 except for two additional layers 28 and 30 which are added to the user interface side of the touch screen 10a.
  • Layer 28 is a third thin-film conductive coating of indium tin oxide which is also on the order of about 400 A thick.
  • Layer 30 is a third dielectric layer which is a thin-film layer on the order of about 5,000 A to 10,000 A thick.
  • the thin-film dielectric layer 30 is typically comprised of a material such as silicone dioxide or titanium oxide. Both of the layers 28 and 30 are once again thin enough so as to be optically transparent.
  • the thin conductive coating 28 is patterned as best illustrated in Figures 6 and 7 to form discrete touch- sensitive areas 28a and 28b over the entire surface of the touch screen 10a. These areas are, as in the case of the active touch sensitive capacitive areas patterned onto the thin-film conductive layer 22 formed by chemical or laser etching to remove the portions 18 thereby forming the discrete areas 28a and 28b.
  • the layer 28 is a passive layer which is used to enhance the user's electrical contact when touching the user interface side of the screen. Accordingly, if a user touches the screen with the very tip of a finger the discrete areas 28a and 28b will effectively increase the conductive area which is sensed from the user's touch. This helps to minimize data errors in using the capacitive touch screen.
  • the thin-film dielectric layer 30 is provided to simply protect the thin-film conductive layer 28 from undue wear and from exposure to chemically caustic or abrasive environments.
  • the capacitive touch screen of the present invention may be implemented by depositing both of the thin-film conductive coating layers 20 and 22 on opposite sides of the first glass substrate layer 24 and by then laminating that layer with the laminating material 32 to the second glass substrate layer 26.
  • the embodiment of Figure 8 is otherwise essentially identical in the other characteristics of the embodiments described previously.
  • the capacitive touch screen of the invention may be implemented using a slightly different construction which is more suitable for applications where the capacitive touch screen is intended as a flat control panel or the like.
  • the first thin-film conductive layer 34 is preferably a tin oxide layer which is on the order of 500 A to 5,000 A 0 thick, and is preferably 3,000 A.
  • the thin-film conductive layer 34 is formed on the back side of the panel and serves as a grounded capacitor plate layer which also provides an RFI shield.
  • the thin-film conductive layer 34 is deposited on 5 one side of the first glass substrate layer 36a which is preferably on the order of about one-eighth of an inch thick.
  • a second glass substrate layer 36c is laminated at one side thereof with a laminating material 36b to the first glass substrate layer 36a.
  • the two glass substrate 0 layers 36a and 36c together with the laminating material 36b together comprise a dielectric means which separates the capacitive plate layer formed by the first thin-film conductive layer 34 and a second thin-film conductive layer 38.
  • the second thin-film conductive layer 38 is also a tin oxide layer which is on the order of about 500 A to 5,000 A thick, is preferably 3,000 A, and is patterned to provide the touch sensitive areas in the manner previously described.
  • the second thin-film conductive coating 38 is 0 then covered by a third glass substrate layer 42 which is on the order of about .062 inches to about .090 inches thick.
  • the lamination layer 40 is typically on the order of about .015 inches thick.
  • the capacitive touch screen generally designated lOe is essentially identical to the embodiment of the capacitive touch screen lOd in Figure 9 except for two changes.
  • the first glass substrate layer 36a and also the laminating material 36b which are illustrated in Figure 9 are not present in the embodiment of Figure 10.
  • a thick-film layer 44 which is comprised of a graphic design patterned onto the back side of the glass substrate layer 36c.
  • the layer 44 may be prepared using any one of a number of conventional techniques for placing the graphic design onto the back side of glass substrate layer 36c, as for example by silk screening, lithographic processes, photographic processes or the like.
  • the capacitive touch screen lOe there is no need for the first thin-film conductive layer 34 (see Fig. 9) which is used as the RF shield since background noise may not be present to any significant extent in the type of application for which the capacitive touch screen lOe is designed.
  • the graphic design which is patterned onto layer 44 is used as a static display of information that identifies the appropriate touch-sensitive areas that are intended to provide the desired user interface functions.

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

Abstract

Ecran tactile capacitif (10) constituant une interface d'utilisateur sur un panneau de commande ou un terminal d'ordinateur. La surface postérieure de l'écran tactile capacitif (10) est pourvue d'une couche métallique conductible mince (20) qui sert de plaque condensateur mise à la terre ainsi que d'écran contre des parasites HF. L'autre plaque condensateur de l'écran tactile capacitif est aussi pourvue d'une couche métallique conductible mince (22) qui est séparée de la première couche (20) par une couche diélectrique (24a, 24b). Cependant, on crée une configuration sur la seconde couche mince d'oxyde stannique d'indium au moyen d'une gravure chimique ou au laser afin de produire des zones capacitives séparées (12a-12b) sensibles au toucher, qui peuvent être séparément détectées lorsque l'utilisateur touche le côté d'interface de l'écran. La seconde couche conductible mince (22), qui comporte une configuration, est située entièrement à l'intérieur de l'écran, étant donné qu'il y a une seconde couche diélectrique (2b) sur la seconde couche métallique mince.
PCT/US1992/000257 1991-01-17 1992-01-14 Ecran tactile capacitif WO1992013328A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64297291A 1991-01-17 1991-01-17
US642,972 1991-01-17

Publications (1)

Publication Number Publication Date
WO1992013328A1 true WO1992013328A1 (fr) 1992-08-06

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PCT/US1992/000257 WO1992013328A1 (fr) 1991-01-17 1992-01-14 Ecran tactile capacitif

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AU (1) AU1258392A (fr)
WO (1) WO1992013328A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1178536A2 (fr) * 2000-08-03 2002-02-06 Casio Computer Co., Ltd. Dispositif de lecture d'image
WO2002084876A1 (fr) * 2001-04-17 2002-10-24 3M Innovative Properties Company Capteur tactile capacitif flexible
NL1019294C2 (nl) * 2001-11-05 2003-05-07 Tno Een bedieningssysteem waarmee een bedieningsfunctie uitvoerbaar is door het aanstoten van een bedieningsorgaan.
WO2004010369A2 (fr) * 2002-07-23 2004-01-29 3M Innovative Properties Company Ecran tactile capacitif a face mince
US7494834B2 (en) 2005-06-16 2009-02-24 Asulab S.A. Method of manufacturing a transparent element including transparent electrodes
WO2009035471A1 (fr) * 2007-01-05 2009-03-19 Apple Inc. Structure d'empilage pour écran tactile
EP2209064A1 (fr) * 2009-01-16 2010-07-21 Samsung Mobile Display Co., Ltd. Panneau d'écran tactile et procédé de fabrication associé
US8259078B2 (en) * 2006-06-09 2012-09-04 Apple Inc. Touch screen liquid crystal display
US20140124347A1 (en) * 2011-11-09 2014-05-08 Yau-Chen Jiang Touch electrode structure and a method for manufacturing the same
WO2014144538A1 (fr) * 2013-03-15 2014-09-18 Gottlieb Stacey Système pour ongle destiné à être utilisé avec des écrans tactiles capacitifs
US8872785B2 (en) 2004-05-06 2014-10-28 Apple Inc. Multipoint touchscreen
US9025090B2 (en) 2010-12-22 2015-05-05 Apple Inc. Integrated touch screens
US9244561B2 (en) 2006-06-09 2016-01-26 Apple Inc. Touch screen liquid crystal display
US9268429B2 (en) 2006-06-09 2016-02-23 Apple Inc. Integrated display and touch screen
US9395857B2 (en) 2007-12-24 2016-07-19 Tpk Holding Co., Ltd. Capacitive touch panel
WO2019233302A1 (fr) * 2018-06-04 2019-12-12 维沃移动通信有限公司 Écran tactile, procédé de détection de pression tactile et terminal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186392A (en) * 1978-07-28 1980-01-29 Burroughs Corporation Touch panel and operating system
US4567480A (en) * 1982-12-13 1986-01-28 John Fluke Mfg. Co., Inc. Touch-sensitive overlay
US4958148A (en) * 1985-03-22 1990-09-18 Elmwood Sensors, Inc. Contrast enhancing transparent touch panel device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186392A (en) * 1978-07-28 1980-01-29 Burroughs Corporation Touch panel and operating system
US4567480A (en) * 1982-12-13 1986-01-28 John Fluke Mfg. Co., Inc. Touch-sensitive overlay
US4958148A (en) * 1985-03-22 1990-09-18 Elmwood Sensors, Inc. Contrast enhancing transparent touch panel device

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1178536A2 (fr) * 2000-08-03 2002-02-06 Casio Computer Co., Ltd. Dispositif de lecture d'image
EP1178536A3 (fr) * 2000-08-03 2005-06-15 Casio Computer Co., Ltd. Dispositif de lecture d'image
US6819316B2 (en) 2001-04-17 2004-11-16 3M Innovative Properties Company Flexible capacitive touch sensor
WO2002084876A1 (fr) * 2001-04-17 2002-10-24 3M Innovative Properties Company Capteur tactile capacitif flexible
NL1019294C2 (nl) * 2001-11-05 2003-05-07 Tno Een bedieningssysteem waarmee een bedieningsfunctie uitvoerbaar is door het aanstoten van een bedieningsorgaan.
WO2003041005A1 (fr) * 2001-11-05 2003-05-15 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Ecran tactile
WO2004010369A2 (fr) * 2002-07-23 2004-01-29 3M Innovative Properties Company Ecran tactile capacitif a face mince
WO2004010369A3 (fr) * 2002-07-23 2004-08-26 3M Innovative Properties Co Ecran tactile capacitif a face mince
US11604547B2 (en) 2004-05-06 2023-03-14 Apple Inc. Multipoint touchscreen
US10908729B2 (en) 2004-05-06 2021-02-02 Apple Inc. Multipoint touchscreen
US10331259B2 (en) 2004-05-06 2019-06-25 Apple Inc. Multipoint touchscreen
US9035907B2 (en) 2004-05-06 2015-05-19 Apple Inc. Multipoint touchscreen
US9454277B2 (en) 2004-05-06 2016-09-27 Apple Inc. Multipoint touchscreen
US8872785B2 (en) 2004-05-06 2014-10-28 Apple Inc. Multipoint touchscreen
US8928618B2 (en) 2004-05-06 2015-01-06 Apple Inc. Multipoint touchscreen
US8982087B2 (en) 2004-05-06 2015-03-17 Apple Inc. Multipoint touchscreen
US7494834B2 (en) 2005-06-16 2009-02-24 Asulab S.A. Method of manufacturing a transparent element including transparent electrodes
US10191576B2 (en) 2006-06-09 2019-01-29 Apple Inc. Touch screen liquid crystal display
US8259078B2 (en) * 2006-06-09 2012-09-04 Apple Inc. Touch screen liquid crystal display
US11886651B2 (en) 2006-06-09 2024-01-30 Apple Inc. Touch screen liquid crystal display
US9244561B2 (en) 2006-06-09 2016-01-26 Apple Inc. Touch screen liquid crystal display
US9268429B2 (en) 2006-06-09 2016-02-23 Apple Inc. Integrated display and touch screen
US11175762B2 (en) 2006-06-09 2021-11-16 Apple Inc. Touch screen liquid crystal display
US9575610B2 (en) 2006-06-09 2017-02-21 Apple Inc. Touch screen liquid crystal display
US10976846B2 (en) 2006-06-09 2021-04-13 Apple Inc. Touch screen liquid crystal display
WO2009035471A1 (fr) * 2007-01-05 2009-03-19 Apple Inc. Structure d'empilage pour écran tactile
US9710095B2 (en) 2007-01-05 2017-07-18 Apple Inc. Touch screen stack-ups
US10521065B2 (en) 2007-01-05 2019-12-31 Apple Inc. Touch screen stack-ups
US9395857B2 (en) 2007-12-24 2016-07-19 Tpk Holding Co., Ltd. Capacitive touch panel
EP2209064A1 (fr) * 2009-01-16 2010-07-21 Samsung Mobile Display Co., Ltd. Panneau d'écran tactile et procédé de fabrication associé
US10409434B2 (en) 2010-12-22 2019-09-10 Apple Inc. Integrated touch screens
US9025090B2 (en) 2010-12-22 2015-05-05 Apple Inc. Integrated touch screens
US9727193B2 (en) 2010-12-22 2017-08-08 Apple Inc. Integrated touch screens
US9146414B2 (en) 2010-12-22 2015-09-29 Apple Inc. Integrated touch screens
US20140124347A1 (en) * 2011-11-09 2014-05-08 Yau-Chen Jiang Touch electrode structure and a method for manufacturing the same
US9280222B2 (en) * 2011-11-09 2016-03-08 Tpk Touch Solutions (Xiamen) Inc. Touch electrode structure and a method for manufacturing the same
US10303267B2 (en) 2013-03-15 2019-05-28 Stacey Gottlieb Fingernail system for use with capacitive touchscreens
US10025394B2 (en) 2013-03-15 2018-07-17 Stacey Gottlieb Fingernail system for use with capacitive touchscreens
US9753551B2 (en) 2013-03-15 2017-09-05 Stacey Gottlieb Fingernail system for use with capacitive touchscreens
WO2014144538A1 (fr) * 2013-03-15 2014-09-18 Gottlieb Stacey Système pour ongle destiné à être utilisé avec des écrans tactiles capacitifs
WO2019233302A1 (fr) * 2018-06-04 2019-12-12 维沃移动通信有限公司 Écran tactile, procédé de détection de pression tactile et terminal

Also Published As

Publication number Publication date
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