WO2001057579A2 - Revetement anti-reflet a trois couches pour un ecran tactile - Google Patents

Revetement anti-reflet a trois couches pour un ecran tactile Download PDF

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Publication number
WO2001057579A2
WO2001057579A2 PCT/US2000/035102 US0035102W WO0157579A2 WO 2001057579 A2 WO2001057579 A2 WO 2001057579A2 US 0035102 W US0035102 W US 0035102W WO 0157579 A2 WO0157579 A2 WO 0157579A2
Authority
WO
WIPO (PCT)
Prior art keywords
layer
touch screen
reflective coating
refractive index
translucent material
Prior art date
Application number
PCT/US2000/035102
Other languages
English (en)
Other versions
WO2001057579A3 (fr
Inventor
Brian E. Aufderheide
Original Assignee
3M Innovative Properties Company
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 Company filed Critical 3M Innovative Properties Company
Priority to JP2001556372A priority Critical patent/JP2003521772A/ja
Priority to KR1020027009935A priority patent/KR20020079824A/ko
Priority to EP00990319A priority patent/EP1256022A2/fr
Priority to AU2001227363A priority patent/AU2001227363A1/en
Publication of WO2001057579A2 publication Critical patent/WO2001057579A2/fr
Publication of WO2001057579A3 publication Critical patent/WO2001057579A3/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/113—Anti-reflection coatings using inorganic layer materials only
    • G02B1/115—Multilayers
    • G02B1/116—Multilayers including electrically conducting layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • 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
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/208—Touch screens
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • the present invention relates to touch sensors or touch screens. More particularly, the present invention relates to anti-reflective coatings for touch sensors or touch screens.
  • touch sensors or touch screens such as, capacitive or resistive touch screens
  • touch sensors or touch screens are utilized in front of a computer driven display capable of variable images or in front of a non-variable display capable of providing fixed images.
  • the touch sensor or touch screen provides an interface so that a human can provide commands to a computer or other control device.
  • Touch screens can be utilized with computers, control panels, controllers, pocket organizers (Palm Pilot ® organizer), arcade games, or any electronic device requiring human interaction.
  • the touch screen is placed above (in front of) the display and includes at least one conductive layer which is utilized to sense the presence and location of a touch.
  • a conventional resistive touch screen includes two layers which are often referred to as, a flex layer and a stable layer. Both the flex layer and the stable layer have transparent, conductive coatings on opposing surfaces. The flex layer and the stable layer are separated from each other by an air gap or other non-conductive medium.
  • the two transparent, conductive coatings are brought into electrical contact.
  • the flex layer is deformed and the conductive coating on the flex layer contacts the conductive coating on the stable layer.
  • the stable layer is not flexible.
  • Conventional resistive touch screens include matrix touch screens and analog touch screens.
  • Matrix touch screens generally have transparent conductive coatings patterned in rows on one surface (the flex layer) and in columns (orthogonal to the rows) on the opposing surface (the stable layer).
  • a discrete switch is closed.
  • the discrete switch is associated with a particular row and column.
  • a computer or other electronic circuit can be utilized to provide electric signals to the rows and columns and determine the horizontal and vertical position (X,Y coordinate) associated with the discrete switch which is closed.
  • analog resistive touch screens the transparent, conductive surfaces are provided on the flex and stable layers.
  • the conductive coatings have uniform sheet resistivity.
  • the sheet resistivity used in analog resistive touch screens is typically between 100 and 1000 Ohms/square, with 200 to 400 Ohms/square being a preferred resistivity.
  • a voltage is applied to one end of one of the transparent, conductive (resistive) layers through a conductive bus bar, while the other end of the same layer is held at ground, to produce a linear voltage gradient across the screen.
  • the bus bars are configured to create a horizontal voltage gradient on one screen and a vertical voltage gradient on the other screen.
  • the analog resistive touch screen is connected to a computer or electronic circuit which decodes the voltages and converts it to a position associated with the touch. Two voltage readings are used to assign a horizontal and vertical (X, Y coordinate) position for the location of the touch. Points can be recorded electronically fast enough that signatures can be digitized and recorded.
  • Optical transmission of light through the touch screen is adversely affected if light is absorbed or reflected as it is transmitted through the touch screen.
  • the amount of light reflected at any interface between two materials depends upon the refractive indices and thicknesses of the two materials on either side of the interface. The amount of reflection is proportional to the difference between refractive indices (the larger the difference in the refractive index, the greater the amount of light is reflected). Light that is reflected is not transmitted through the touch screen.
  • the conductive coatings associated with the flex layer and stable layer of the touch screen have a refractive index which is typically 1.8 to 2.2.
  • Air associated with the air gap between the conductive coatings has a refractive index which is 1.0.
  • the large difference in refractive indexes associated with the conductive coating and air gap interfaces is the greatest difference in refractive indexes in the entire resistive touch screen construction. Accordingly, the conductive coating and air gap interfaces cause the greatest amount of light reflection. Thus, it is desirable to reduce the amount of reflection associated with the conductive coating and air gap interfaces.
  • Anti-reflective coatings generally use alternating layers of transparent materials having low and high or high and low refractive indexes on a substrate.
  • the indexes are chosen so that the index and thickness of the layers results in destructive interference between the light reflected off the first and second layers. The total amount of light reflected can be minimized if the optical thickness is designed for maximum destructive interference of reflected light.
  • Conventional touch screen systems have utilized a two layer anti- reflective coating to reduce reflection at the conductive coating and air gap interface.
  • the two layer an ti -reflective coating is applied to the substrate of the flex layer.
  • the two layer anti-reflective coating includes a silicon dioxide layer above the substrate and a conductive coating above the silicon dioxide layer.
  • the conductive coating above the silicon dioxide layer is utilized to sense the touch as described above.
  • the touch screen includes translucent material.
  • the touch screen allows viewing through the translucent material.
  • the translucent material has an exterior side closer to an exterior of a touch screen and an interior side closer to an interior of the touch screen.
  • the anti-reflective coating includes a first layer, a second layer and a third layer.
  • the first layer is disposed adjacent the interior side of the translucent material.
  • the first layer has a high refractive index.
  • the second layer has a low refractive index and is disposed adjacent the first layer.
  • the third layer is disposed adjacent the second layer and is closer to the second layer than the first layer.
  • the third layer is conductive and is utilized to sense touches on the touch screen.
  • the anti-reflective coating reduces reflection at the interior air interface.
  • a touch screen layer including a polyester film.
  • the touch screen allows viewing through the polyester film layer.
  • the polyester film has an exterior side farther from a touch and an interior side closer to the touch.
  • the touch screen also includes an anti -reflective coating means for increasing transmission through the polyester film.
  • the anti- reflective coating means includes a first layer disposed adjacent the interior side, a second layer disposed adjacent the first layer, and a third layer disposed adjacent the second layer.
  • the third layer is closer to the second layer than the first layer.
  • the third layer is conductive.
  • the touch screen includes a translucent material.
  • the touch screen provides visual indicia through the translucent material.
  • the translucent material has an exterior side closer to an exterior of the touch screen and an interior side closer to an interior of the touch screen.
  • the method includes providing a first layer adjacent the interior side of the translucent material, providing a second layer adjacent the second layer, and providing a third layer adjacent the second layer.
  • the first layer has a high refractive index
  • the second layer has a low refractive index.
  • the third layer is closer to the second layer than the first layer.
  • the third layer is conductive and is adjacent an air gap. The first, second and third layers reduce reflection at the interior air interface.
  • FIGURE 1 is an exploded isometric view of a touch screen
  • FIGURE 2 is an elevation side view of the touch screen illustrated in FIGURE 1 ;
  • FIGURE 3 is a cross-sectional view of the touch screen illustrated in
  • FIGURE 1 showing two triple layer anti-reflective coatings
  • FIGURE 4 is a more detailed cross sectional view of one of the triple layer anti-reflective coatings illustrated in FIGURE 2.
  • a touch screen 10 is embodied as a DynaclearTM 4- wire analog resistive touch panel.
  • screen 10 can be a matrix touch screen, or other type of apparatus for sensing touches.
  • Touch screen 10 includes a flex layer 20, a spacer 30, and a stable layer 40.
  • Flex layer 20 and stable layer 40 are preferably opposing substrates separated by an air gap 32 ( Figure 1). Gap 32 is necessary to allow contact between the conductive coatings on surfaces 21 and 41 and yet insulate surfaces 21 and 41 from each other.
  • Layers 20 and 40 each advantageously include a triple layer anti-reflective coating (See Figures 3 and 4) on interior surfaces 21 and 41 , respectively.
  • Layer 20 includes an exterior surface 22, and layer 40 includes an exterior surface 42.
  • Layer 20 includes a set of conductive bus bars 24, and layer 40 includes a set of conductive bus bars 44.
  • Screen 10 senses the existence and location of a touch on surface 22. Exterior surface 22 is closer to the touch than interior surface 21. Spacer 30 is insulative and provides air gap 32 between layer 20 and layer 40. Layer 20 is deformed to contact layer 40 across air gap 32. When layer 20 contacts layer 40, the touch from a finger or stylus can be sensed. Generally, the touch is sensed when conductive surface 21 contacts conductive surface 41.
  • Bus bars 24 and 44 can be silver ink typically having a conductivity 1000 times more conductive than surfaces 21 and 41 .
  • surfaces 21 and 41 include an indium tin oxide (ITO) film having a resistivity of 100-1000 Ohms/ square.
  • ITO indium tin oxide
  • surfaces 21 and 41 have a resistivity of 200-400 Ohms/square.
  • the film is typically deposited by a sputtering technique.
  • Layers 20 and 40 are typically a thin translucent substrate, such as glass or polyester. As used in this application, the term translucent means allowing at least some or all light to pass. A translucent material includes all materials which are transparent and/or non-opaque. Preferably, layers 20 and 40 are manufactured from a polyester (PET) film which is .005 to .007 inches thick. Layers 20 and 40 include triple layer anti-reflective coatings including the thin ITO film on surfaces 21 and 41 , respectively. Images are provided through touch screen 10. Sources for such images can be, cathode ray tubes (CRTs), liquid crystal displays (LCDs), plasma displays, EL displays, books, pictures, or other sources of information. Touch screen 10 can include an inlay which provides visual indicia or can include a screen capable of providing variable visual indicia. Thus, images can be seen through layers 20 and 40 associated with screen 10.
  • CTRs cathode ray tubes
  • LCDs liquid crystal displays
  • Plasma displays plasma displays
  • EL displays EL displays
  • screen 10 includes a triple layer anti- reflective coating 52 associated with surface 21 of layer 20 and a triple layer anti- reflective coating 54 associated with surface 41 of layer 40.
  • screen 10 can have a triple layer anti-reflective coating either only on layer 20 or layer 40.
  • .Layers 20 and 40 are a composite of transparent layers through which light is transmitted. For example, light from visual indicia 47 can be provided through layers 20 and 40.
  • Layer 20 includes a hard coating layer 56, a substrate 60 and coating 52.
  • layer 40 includes a substrate 70 and coating 54.
  • Substrates 60 and 70 are a translucent material, such as, glass, plastic, or PET.
  • Layer 56 is associated with surface 22 of layer 20.
  • layer 56 is an ultraviolet light cured acrylate which provides a hard coating and is 0.0001 to 0.0015 inches thick.
  • Layer 56 can have a roughened surface to decrease reflective glare off surface 22 and to reduce the visibility of finger prints on surface 22.
  • the roughened surface of layer 56 can be produced by a filler material, such as, silica particles.
  • Surface 21 generally does not include a hard coating layer such as layer 56.
  • Surface 21 can include a textured coating, such as, acrylic or other clear polymer coating filled with glass or plastic spheres to prevent Newton rings in the final touch screen construction.
  • Layer 20 is built on a PET layer or substrate 60.
  • Anti-reflective coating 52 includes a layer 62, a layer 64 and a layer 66.
  • Layer 62 can be provided directly on substrate 60 or on the Newton ring coating upon layer 60.
  • Layer 62 can be a high index translucent material, such as, indium tin oxide (ITO), tin antimony oxide, tin oxide or yttrium oxide provided on surface 21.
  • Layer 62 can be a conductive or non-conductive layer.
  • Layer 64 is a layer of silicon dioxide.
  • Layer 66 is a layer of ITO and serves as the layer which provides the electrical contact between layers 20 and 40 when a touch is sensed.
  • anti-reflective coating 54 is disposed on a PET layer or substrate 70.
  • Anti- reflective coating 54 is comprised of layer 62, layer 64 and layer 66. Layers 62, 64 and 66 of coating 54 are similar to layers 62, 64 and 66 of coating 52.
  • anti-reflective coating 52 is described. However, description of anti-reflective coating 52 is applicable to anti -reflective coating 54. Although specific materials and thicknesses are given, the details disclosed are examples only. Layers 62, 64 and 66 can be applied to substrate 60 by sputtering or evaporation deposition technique.
  • Layer 62 is preferably a film or coating having a high index of refraction such as between 1.8 and 2.9.
  • Layer 62 can be indium tin oxide (ITO).
  • layer 62 can be manufactured from other materials having a high index of refraction including, but not limited to, tin oxide, zirconium oxide, yttrium oxide, titanium oxide, and niobium oxide. Thicknesses for layer 62 can range from 10-100 nm depending upon the type of material used.
  • Layer 64 preferably has a low index of refraction, such as, between 1.4 and 1.6 and is an insulative material.
  • layer 64 is silicon dioxide which has a thickness of 15 to 60 nm.
  • layer 64 can have a thickness which ranges from 10 to 100 nm.
  • Layer 66 is preferably a film or coating of conductive material.
  • Layer 66 can be ITO, although other conductive materials can be utilized.
  • Layer 66 can be similar to layer 62.
  • Layer 66 preferably has a high index of refraction between 1.8 and 2.2.
  • Layer 66 is preferably 20 to 30 nm thick. Alternatively, layer 66 can be from 10-100 nm thick.
  • layer 66 is 25 nm thick, layer 64 is 45 nm thick, and layer 62 is 70 nm thick. In another embodiment, layer 66 is 30 nm thick, layer 64 is 39 nm thick, and layer 62 is 78 nm thick. Alternatively, the ranges and thickness for layers 62, 64, and 66 can be from 10 to 100 nm for each layer. In addition, anti-reflective coating 52 can include more than triple layers, although adding additional layers adds to the cost of coating 52.
  • Conventional touch screens 10 which do not include coatings 62 and
  • anti-reflective coatings 62 and 64 generally reflect approximately 8 % of the light from each ITO to air interface. Although conventional reflective coatings can reduce this reflection to 4 to 6%, anti-reflective coatings 62 and 64 can further reduce this reflection to 1.5 to 2.5% . This is a considerable gain from conventional anti-reflective coatings and an even further gain from touch screen which have no anti -reflective coating whatsoever.

Abstract

Ecran tactile qui comporte un revêtement antireflet (ARC) à trois couches et qui peut être un écran tactile analogique ou un écran tactile résistif à matrice. Ce revêtement antireflet comporte deux couches à indice élevé et une couche à indice faible. La couche à indice élevé exposée est conductrice. Ledit revêtement antireflet peut être appliqué sur une couche souple et/ou sur une couche stable.
PCT/US2000/035102 2000-02-02 2000-12-22 Revetement anti-reflet a trois couches pour un ecran tactile WO2001057579A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2001556372A JP2003521772A (ja) 2000-02-02 2000-12-22 タッチスクリーン用の３層反射防止コーティング
KR1020027009935A KR20020079824A (ko) 2000-02-02 2000-12-22 터치 스크린용 3중층 반사 방지 코팅
EP00990319A EP1256022A2 (fr) 2000-02-02 2000-12-22 Revetement anti-reflet a trois couches pour un ecran tactile
AU2001227363A AU2001227363A1 (en) 2000-02-02 2000-12-22 Triple layer anti-reflective coating for a touch screen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49663400A 2000-02-02 2000-02-02
US09/496,634 2000-02-02

Publications (2)

Publication Number Publication Date
WO2001057579A2 true WO2001057579A2 (fr) 2001-08-09
WO2001057579A3 WO2001057579A3 (fr) 2002-02-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/035102 WO2001057579A2 (fr) 2000-02-02 2000-12-22 Revetement anti-reflet a trois couches pour un ecran tactile

Country Status (6)

Country Link
EP (1) EP1256022A2 (fr)
JP (1) JP2003521772A (fr)
KR (1) KR20020079824A (fr)
CN (1) CN1196993C (fr)
AU (1) AU2001227363A1 (fr)
WO (1) WO2001057579A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003046616A2 (fr) * 2001-11-29 2003-06-05 N.V. Bekaert S.A. Articles comportant des revetements conducteurs a faible reflexivite comprenant un composant conducteur situe le plus vers l'exterieur
US6583935B1 (en) 1998-05-28 2003-06-24 Cpfilms Inc. Low reflection, high transmission, touch-panel membrane
CN100354802C (zh) * 2003-02-28 2007-12-12 Sca包装瑞典股份公司 具有电子触摸板输入区的招贴画
EP1923848A1 (fr) * 2002-03-28 2008-05-21 Igt Systeme d'interfaçage entre un utilisateur et une machine de jeu de casino
EP2002324A2 (fr) * 2006-03-31 2008-12-17 3M Innovative Properties Company Écran tactile ayant des modeles conducteurs transparents a visibilité réduite
US7628701B2 (en) 2002-06-24 2009-12-08 Igt System for interfacing a user and a casino gaming machine
EP2487566A3 (fr) * 2011-02-11 2017-02-22 eTurboTouch Technology Inc. Panneau tactile
US10758420B2 (en) 2016-05-12 2020-09-01 3M Innovative Properties Company Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers

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* Cited by examiner, † Cited by third party
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JP4830349B2 (ja) * 2005-05-25 2011-12-07 パナソニック株式会社 高周波加熱装置
CN100435080C (zh) * 2006-03-15 2008-11-19 胜华科技股份有限公司 电阻式触控面板制法
KR100801647B1 (ko) 2006-08-24 2008-02-05 삼성전자주식회사 이동 통신 단말기에서 고유 정보를 제공하기 위한 방법 및장치
US20090316060A1 (en) * 2008-06-18 2009-12-24 3M Innovative Properties Company Conducting film or electrode with improved optical and electrical performance
CN102034565B (zh) * 2009-10-06 2014-01-29 日油株式会社 透明导电性膜
WO2012036527A2 (fr) * 2010-09-17 2012-03-22 (주)엘지하우시스 Film conducteur transparent avec visibilité supérieure et procédé pour produire celui-ci
CN103226410A (zh) * 2013-04-09 2013-07-31 华为技术有限公司 一种移动终端、触摸屏玻璃及触摸屏玻璃的制作方法
CN104281303B (zh) * 2013-07-05 2019-07-23 华为终端有限公司 一种显示装置、触摸屏及其制造方法
JP6526380B2 (ja) * 2013-12-03 2019-06-05 大日本印刷株式会社 タッチパネル付き表示装置
CN106249945A (zh) * 2016-07-22 2016-12-21 京东方科技集团股份有限公司 触控屏及其制作方法、触控装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145201A1 (fr) * 1983-11-10 1985-06-19 Optical Coating Laboratory, Inc. Revêtement antiréfléchissant optique avec propriétés antistatiques
US5407733A (en) * 1990-08-10 1995-04-18 Viratec Thin Films, Inc. Electrically-conductive, light-attenuating antireflection coating
WO1997008357A1 (fr) * 1995-08-30 1997-03-06 Nashua Corporation Revetement anti-reflechissant
DE19634576C1 (de) * 1996-08-27 1997-09-18 Deutsche Spezialglas Ag Vorsatzfilter für selbstleuchtende Bildschirme
EP1020738A1 (fr) * 1999-01-14 2000-07-19 Sumitomo Chemical Company, Limited Revêtement antiréfléchissant à trois couches contenant une première couche d' une résine liante avec des particules ultrafines
WO2000063924A1 (fr) * 1999-04-20 2000-10-26 Matsushita Electric Industrial Co., Ltd. Substrat transparent presentant un revetement multicouche antireflet conducteur, ecran tactile utilisant ce substrat transparent, et dispositif electronique utilisant ledit ecran tactile

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07296672A (ja) * 1994-04-22 1995-11-10 Seiko Epson Corp タッチパネル
JP3957824B2 (ja) * 1997-07-31 2007-08-15 セントラル硝子株式会社 タッチパネルの基板用低反射ガラス
WO1999059814A1 (fr) * 1998-05-15 1999-11-25 Toyo Boseki Kabushiki Kaisha Film conducteur transparent et ecran tactile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145201A1 (fr) * 1983-11-10 1985-06-19 Optical Coating Laboratory, Inc. Revêtement antiréfléchissant optique avec propriétés antistatiques
US5407733A (en) * 1990-08-10 1995-04-18 Viratec Thin Films, Inc. Electrically-conductive, light-attenuating antireflection coating
WO1997008357A1 (fr) * 1995-08-30 1997-03-06 Nashua Corporation Revetement anti-reflechissant
DE19634576C1 (de) * 1996-08-27 1997-09-18 Deutsche Spezialglas Ag Vorsatzfilter für selbstleuchtende Bildschirme
EP1020738A1 (fr) * 1999-01-14 2000-07-19 Sumitomo Chemical Company, Limited Revêtement antiréfléchissant à trois couches contenant une première couche d' une résine liante avec des particules ultrafines
WO2000063924A1 (fr) * 1999-04-20 2000-10-26 Matsushita Electric Industrial Co., Ltd. Substrat transparent presentant un revetement multicouche antireflet conducteur, ecran tactile utilisant ce substrat transparent, et dispositif electronique utilisant ledit ecran tactile

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 03, 29 March 1996 (1996-03-29) & JP 07 296672 A (SEIKO EPSON CORP), 10 November 1995 (1995-11-10) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 05, 31 May 1999 (1999-05-31) & JP 11 053114 A (CENTRAL GLASS CO LTD;NIPPON SODA CO LTD), 26 February 1999 (1999-02-26) *
See also references of EP1256022A2 *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6583935B1 (en) 1998-05-28 2003-06-24 Cpfilms Inc. Low reflection, high transmission, touch-panel membrane
EP1325361A1 (fr) * 2000-09-19 2003-07-09 CPFilms, Inc. Membrane de panneau tactile peu reflechissante possedant une forte capacite de transmission
EP1325361A4 (fr) * 2000-09-19 2004-12-01 Cpfilms Inc Membrane de panneau tactile peu reflechissante possedant une forte capacite de transmission
WO2003046616A2 (fr) * 2001-11-29 2003-06-05 N.V. Bekaert S.A. Articles comportant des revetements conducteurs a faible reflexivite comprenant un composant conducteur situe le plus vers l'exterieur
WO2003046616A3 (fr) * 2001-11-29 2003-12-18 Bekaert Sa Nv Articles comportant des revetements conducteurs a faible reflexivite comprenant un composant conducteur situe le plus vers l'exterieur
EP1923848A1 (fr) * 2002-03-28 2008-05-21 Igt Systeme d'interfaçage entre un utilisateur et une machine de jeu de casino
EP1488389B1 (fr) * 2002-03-28 2008-05-21 Igt Systeme d'interfa age entre un utilisateur et une machine de jeu de casino
US7628701B2 (en) 2002-06-24 2009-12-08 Igt System for interfacing a user and a casino gaming machine
CN100354802C (zh) * 2003-02-28 2007-12-12 Sca包装瑞典股份公司 具有电子触摸板输入区的招贴画
EP2002324A2 (fr) * 2006-03-31 2008-12-17 3M Innovative Properties Company Écran tactile ayant des modeles conducteurs transparents a visibilité réduite
EP2002324A4 (fr) * 2006-03-31 2012-12-26 3M Innovative Properties Co Écran tactile ayant des modeles conducteurs transparents a visibilité réduite
EP2487566A3 (fr) * 2011-02-11 2017-02-22 eTurboTouch Technology Inc. Panneau tactile
USRE46587E1 (en) 2011-02-11 2017-10-24 Wistron Corporation Resistive touch device without perception of color difference
US10758420B2 (en) 2016-05-12 2020-09-01 3M Innovative Properties Company Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers
US11413190B2 (en) 2016-05-12 2022-08-16 3M Innovative Properties Company Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers

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Publication number Publication date
KR20020079824A (ko) 2002-10-19
EP1256022A2 (fr) 2002-11-13
JP2003521772A (ja) 2003-07-15
AU2001227363A1 (en) 2001-08-14
CN1196993C (zh) 2005-04-13
WO2001057579A3 (fr) 2002-02-21
CN1433521A (zh) 2003-07-30

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