WO2005098585A1 - Interrupteur sensitif transparent - Google Patents

Interrupteur sensitif transparent Download PDF

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Publication number
WO2005098585A1
WO2005098585A1 PCT/JP2005/006902 JP2005006902W WO2005098585A1 WO 2005098585 A1 WO2005098585 A1 WO 2005098585A1 JP 2005006902 W JP2005006902 W JP 2005006902W WO 2005098585 A1 WO2005098585 A1 WO 2005098585A1
Authority
WO
WIPO (PCT)
Prior art keywords
transparent
touch switch
transparent conductive
conductive films
transparent touch
Prior art date
Application number
PCT/JP2005/006902
Other languages
English (en)
Japanese (ja)
Inventor
Keiji Tsukamoto
Seiichi Murakami
Original Assignee
Gunze Limited
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 Gunze Limited filed Critical Gunze Limited
Publication of WO2005098585A1 publication Critical patent/WO2005098585A1/fr

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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
    • G06F3/033—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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties

Definitions

  • the present invention relates to a transparent touch switch, and more particularly, to a capacitance-type transparent touch switch.
  • the transparent touch switch disclosed in Patent Document 1 has a structure in which a dielectric layer is interposed between a pair of transparent conductive films having a predetermined pattern shape. It is possible to detect the touch position by using the change in capacitance caused by grounding through the touch panel.
  • Patent Document 1 Japanese Patent Laid-Open No. 2003-173238 (FIGS. 1 and 5)
  • an object of the present invention is to provide a transparent touch switch capable of improving visibility.
  • the object of the present invention is to provide a pair of transparent substrates on each of which a transparent conductive film is patterned and adhered to each other via an adhesive layer, and capable of detecting a contact position of one of the transparent substrates on a front surface side.
  • a transparent touch switch of a capacitance type wherein each of the transparent substrates is made of a norbornene-based resin, and each of the transparent conductive films is formed via an undercoat layer.
  • the coat layer is achieved by a transparent touch switch formed by laminating two or more layers having different light refractive indexes so that the light transmittance is higher than that of the transparent substrate before the formation of the undercoat layer.
  • a circularly polarizing plate is provided on the surface side of one of the transparent substrates. Further, it is more preferable that a ⁇ 4 retardation plate is provided on the back side of the other transparent substrate!
  • FIG. 1 is a schematic sectional view of a transparent touch switch according to one embodiment of the present invention.
  • FIG. 2 is a plan view showing a main part of the transparent touch switch shown in FIG. 1.
  • FIG. 3 is a plan view showing another main part of the transparent touch switch shown in FIG. 1.
  • FIG. 4 is a schematic sectional view of a transparent touch switch according to another embodiment of the present invention.
  • FIG. 5 is a schematic sectional view of a transparent touch switch according to still another embodiment of the present invention.
  • FIG. 6 is a schematic sectional view of a transparent touch switch according to still another embodiment of the present invention.
  • FIG. 7 is a schematic sectional view of a transparent touch switch according to still another embodiment of the present invention. Explanation of symbols
  • FIG. 1 is a schematic sectional view of a transparent touch switch according to one embodiment of the present invention.
  • the transparent touch switch 101 is a capacitive touch switch, and includes a first planar body 1 in which a transparent conductive film 12 is formed on a transparent substrate 11 via an undercoat layer 13 and a transparent substrate 21.
  • the first planar body 1 and the second planar body 2 are bonded via the adhesive layer 15 such that the transparent conductive films 12 and 22 face each other.
  • a circular polarizer 6 composed of a linear polarizer 4 and a ⁇ , 4 retardation plate 5 is provided on the surface side of the first planar body 1 on the touch side (the side opposite to the surface on which the transparent conductive film 12 is formed). Is attached via an adhesive layer 9.
  • the transparent substrates 11 and 21 are preferably materials having high transparency and optical isotropy, and preferably include norbornene-based resins.
  • the transparent substrates 11 and 21 may be subjected to hard coat processing on one or both sides.
  • the thickness of the transparent substrates 11 and 21 is preferably about 20 to 500 ⁇ m! / ⁇ .
  • the undercoat layers 13 and 23 By forming the undercoat layers 13 and 23 on the transparent substrates 11 and 21, respectively, the light refraction index is increased so that the light transmittance is higher than that of the transparent substrates 11 and 21 before the undercoat layer is formed.
  • the laminate is composed of two or more different layers. Examples of the material of each layer constituting the laminated body of the undercoat layers 13 and 23 include silicon oxide, titanium oxide, and tin oxide. Preferred combinations include hafnium oxide of tin oxide and monoxide of silicon oxide. Examples include tin-based, zinc oxide-tin oxide-based, and oxidized tin-oxidized titanium-based.
  • the undercoat layers 13 and 23 can be formed by a sputtering method, a resistance evaporation method, an electron beam evaporation method, or the like.
  • Materials for the transparent conductive films 12, 22 include indium tin oxide (ITO), indium oxide, antimony-added oxidized tin, fluorine-added oxidized tin, aluminum-added oxidized zinc, and potassium-added oxidized oxide.
  • ITO indium tin oxide
  • Zinc, silicon-added zinc oxide, metal oxides such as zinc oxide tin monoxide, indium oxide tin oxide, zinc oxide, indium oxide and magnesium oxide can be exemplified. It may be formed as a composite.
  • Examples of a method for forming the transparent conductive films 12 and 22 include a PVD method such as a sputtering method, a vacuum evaporation method, and an ion plating method, a CVD method, a coating method, and a printing method.
  • the transparent conductive films 12 and 22 are each formed as an aggregate of a plurality of strip-shaped conductive portions 12a and 22a extending in parallel.
  • the strip-shaped conductive portions 12a and 22a are arranged to be orthogonal to each other.
  • the transparent conductive films 12 and 22 are connected to an external drive circuit (not shown) through a drawing circuit (not shown) that also has a strong force such as conductive ink. Not connected).
  • the shape of the turn of the transparent conductive films 12 and 22 is not limited to that of the present embodiment, but may be any shape as long as a contact point such as a finger can be detected.
  • a touch position detection method is the same as that of a conventional capacitive touch panel.
  • the transparent conductive films 12 and 22 become in contact with each other.
  • the coordinates of the contact position are calculated by detecting the value of the current flowing through the transparent conductive films 12 and 22 at this time through the capacitance of the human body at the contact position.
  • the pattern of the transparent conductive films 12 and 22 has a desired pattern shape on the surfaces of the transparent conductive films 12 and 22 formed on the transparent substrates 11 and 21 via the undercoat layers 13 and 23, respectively.
  • the mask portion can be dissolved with an alkali solution or the like to perform the process.
  • unnecessary transparent conductive films 12 and 22 can be removed, while the undercoat layers 13 and 23 can all remain.
  • the patterning of the transparent conductive films 12 and 22 is not limited to such a method.
  • the patterning of the transparent conductive films 12 and 22 may be performed by removing the undercoat layers 13 and 23 or by patterning using another known method. Good
  • the adhesive layer 15 can use a general transparent adhesive such as an epoxy-based or acrylic-based adhesive, and may include a core material that is a transparent film of a norbornene-based resin.
  • the circularly polarizing plate 6 is formed by adhering the entire surface of the linearly polarizing plate 4 and the ⁇ 4 retardation plate 5.
  • the linear polarizing plate 4 can be, for example, a stretched film of polyvinyl alcohol (PVA) in which a dichroic dye such as iodine or a dichroic dye is adsorbed and oriented. It may be used so as to be sandwiched between cetyl acetate (TAC) films.
  • the ⁇ 4 retardation plate 5 may be, for example, a film obtained by stretching a polybutyl alcohol ( ⁇ VA) or polycarbonate (PC) film to impart birefringence. Adhesion between the circularly polarizing plate 6 and the first planar body 1 is also performed through the adhesive layer 9 having the same material strength as that of the adhesive layer 15 so that no air layer is interposed therebetween. Is preferred.
  • a norbornene-based resin is selected as a material for the transparent substrates 11 and 21, and the transparent conductive films 12 and 22 are formed via the undercoat layers 13 and 23. Therefore, as shown in the experimental results described later, the patterns of the transparent conductive films 12 and 22 can be noticeable, and the visibility can be improved. Further, when the circularly polarizing plate 6 is provided on the surface side of the transparent substrate 11, the visibility can be further improved.
  • a ⁇ 4 retardation plate 8 is adhered to the entire back surface of the second planar body 2 via an adhesive layer 16 made of the same material as the adhesive layer 15, whereby The transparent touch switch 102 shown in FIG. 4 may be configured, so that the visibility can be further improved.
  • the ⁇ 4 retardation plate 8 is arranged so that the optical axis is orthogonal to the optical axis of the ⁇ 4 retardation plate 5.
  • FIG. 2 the same components as those in FIG. 1 are denoted by the same reference numerals (the same applies to the following drawings).
  • a ⁇ / 4 retardation plate made of norbornene-based resin is used as the transparent substrate 31, and the ⁇ / 4 retardation plate is used.
  • the transparent touch switch 103 may be configured such that the transparent conductive film 12 is formed via the undercoat layer 13. In this case, only the linear polarizing plate 4 should be formed on the touch side (front side) of the transparent substrate 31 via the adhesive layer 9.
  • a ⁇ / 4 retardation plate made of norbornene-based resin is used as the transparent substrate 41, and this ⁇ / 4 retardation plate is used.
  • the transparent touch switch 104 may be configured such that the transparent conductive film 22 is formed via the undercoat layer 23. Further, the transparent substrate 41 described above is used instead of the transparent substrate 21 shown in FIG.
  • the transparent conductive films 12 and 22 need not necessarily be arranged to face each other.
  • the other side is the transparent conductive film on the transparent substrate 21 via the adhesive layer 15. It may be configured to be attached to the formation surface of the 22.
  • the transparent touch panel having the configuration shown in FIG. 4 was produced.
  • the size is 5cm long and 7cm wide.
  • the transparent substrate 11 of the first planar body 1 was made of “Zeonor” made by Nippon Zeon Co., Ltd., which is an optically isotropic film of norbornene resin, and had a thickness of 188 m.
  • the undercoat layer 13 is a laminate in which a silicon oxide layer having a thickness of about 30 nm and a silicon tin oxide layer having a thickness of about 70 nm are laminated in this order, and the transparent conductive film 12 has a thickness of 30 nm indium stannate.
  • a film layer was formed by sputtering.
  • the surface resistivity was about 250 ⁇ / mouth.
  • the material and thickness of the transparent substrate 21, the undercoat layer 23, and the transparent conductive film 22 of the second planar body 2 are the same as those of the transparent substrate 11, the undercoat layer 13, and the transparent conductive film 12 of the first plan
  • the shape of the transparent conductive films 12 and 22 is a strip as shown in Figs. 2 and 3, and the width of each of the conductive strips 12a and 22a is 0.3 mm and the interval is 4. Omm. And The formation of the turns of the transparent conductive films 12 and 22 was performed by etching as described in the present embodiment.
  • the circular polarizer 6 is a circular polarizer with a single-sided adhesive for a touch panel manufactured by Sumitomo Chemical Co., Ltd., which has a thickness of 0.45 mm and an assumed wavelength of 550 nm.
  • a PET film, a linear polarizing plate and a ⁇ ⁇ 4 plate were laminated, and a PET film: PET-AG7AR and a linear polarizing plate: SQW252AW0) were used.
  • the ⁇ 4 retardation plate 8 used was a ⁇ 4 plate (product number: AGU- (U-S, model number: WH157)) manufactured by Sumitomo Iridaku Kogyo Co., Ltd. Used acrylic adhesive "P043FP" manufactured by Lintec Co., Ltd.
  • the touch side (front side) of the transparent touch switch manufactured in this manner is irradiated with a 24 W three-wavelength fluorescent lamp, and the force at which the pattern shape of the transparent conductive films 12 and 22 can be visually recognized while changing the irradiation angle. was visually inspected.
  • the spectral reflectance (wavelength 550 nm) and the total light transmittance of this transparent touch panel were measured in accordance with JI SK7361-1, and the portion where each transparent conductive film 12 and 22 overlapped and the transmittance were measured.
  • the difference value which is the difference between the measured values of the bright conductive films 12 and 22 where no misalignment was formed, was determined.
  • a spectrophotometer (U-3310) manufactured by Hitachi, Ltd. was used to measure the spectral reflectance, and a digital turbidimeter (NDH5000W, Nippon Denshoku Industries Co., Ltd.) was used to measure the total light transmittance. ) was used. The results are shown in Table 1 as Example 1.
  • Example 1 The visual results of Example 1 showed that the pattern shapes of the transparent conductive films 12 and 22 were inconspicuous including the portions where the transparent conductive films 12 and 22 overlapped, and good visibility was obtained. The difference between the spectral reflectance and the total light transmittance was a small value.
  • Example 2 The visual result of Example 2 was such that good visibility was obtained as in Example 1.
  • Example 3 is a result that, when carefully checked, the pattern shape of the transparent conductive films 12 and 22 can be recognized, and the difference between the spectral reflectance and the total light transmittance is smaller than that of Examples 1 and 2. In each case, the values were slightly higher.
  • the material of the transparent substrates 11 and 21 was changed to “Zeonor” manufactured by Zeon Corporation and replaced by “ARTON” manufactured by JSR Corporation, which is the same norbornene-based resin optically isotropic film. (Thickness: 188 ⁇ m) and the same test as above was performed under the same conditions as in Examples 1 to 3, except that hard coat processing was performed on both 20,000 of this film. The results are shown in Table 1 as Examples 4 to 6.
  • Example 4 The visual results of Examples 4 and 5 were such that good visibility was obtained as in Example 1. Further, the difference between the spectral reflectance and the total light transmittance was a small value.
  • the visual result of Example 6 is a result that the pattern shape of the transparent conductive films 12 and 22 can be recognized when carefully checked, and the difference between the spectral reflectance and the total light transmittance is smaller than that of Examples 4 and 5. In each case, the values were slightly higher.
  • Comparative Examples 1 to 3 all showed that the pattern shapes of the transparent conductive films 12 and 22 were clearly recognizable, resulting in poor visibility.
  • the difference between the spectral reflectance and the total light transmittance was higher than those in Examples 1 to 3.
  • Comparative Examples 4 to 6 were all such that the pattern shapes of the transparent conductive films 12 and 22 could be clearly recognized, resulting in poor visibility.
  • the difference between the spectral reflectance and the total light transmittance was higher than those in Examples 1 to 3.
  • the transparent touch switch of an electrostatic capacitance type which can improve visibility can be provided.

Abstract

Interrupteur sensitif capacitif transparent comprenant une paire de substrats transparents (11, 21) sur lesquels sont déposés en motif des films conducteurs transparents (12,22), respectivement, et qui sont collés l’un à l’autre au travers d’une couche adhésive (15) et capable de détecter une position de contact sur le côté surface des substrats transparents (11). Chacun des substrats transparents (11, 21) est composé de résine à base de norbornane et chacun des films conducteurs transparents (12,22) est réalisé avec une sous-couche (13, 23) entre. Les couches de sous-couche (13, 23) sont formées en superposant deux couches ou plus ayant des indices différents de réfraction de la lumière, si bien que le facteur de transmission de la lumière devient supérieur à celui des substrats transparents (11, 21) avant que les couches de sous-couche(11, 21) soient formées. La structure ci-dessus peut améliorer la visibilité de l’interrupteur sensitif transparent.
PCT/JP2005/006902 2004-04-08 2005-04-08 Interrupteur sensitif transparent WO2005098585A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-114033 2004-04-08
JP2004114033A JP2007272259A (ja) 2004-04-08 2004-04-08 透明タッチスイッチ

Publications (1)

Publication Number Publication Date
WO2005098585A1 true WO2005098585A1 (fr) 2005-10-20

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WO (1) WO2005098585A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008091116A (ja) * 2006-09-29 2008-04-17 Gunze Ltd タッチパネル及びタッチパネルの製造方法
WO2009025454A2 (fr) * 2007-08-23 2009-02-26 Essdesign Bloc numérique à commutateur à toucher lisse
JP2010253813A (ja) * 2009-04-24 2010-11-11 Nissha Printing Co Ltd 艶消し状導電性ナノファイバーシート及びその製造方法
JP2012025158A (ja) * 2010-06-25 2012-02-09 Gunze Ltd 透明面状体及び透明タッチパネル
TWI634466B (zh) * 2014-03-25 2018-09-01 日商富士軟片股份有限公司 觸控面板模組及電子裝置

Families Citing this family (9)

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Publication number Priority date Publication date Assignee Title
JP4667471B2 (ja) * 2007-01-18 2011-04-13 日東電工株式会社 透明導電性フィルム、その製造方法及びそれを備えたタッチパネル
JP2009129100A (ja) * 2007-11-21 2009-06-11 Young Fast Optoelectronics Co Ltd ダブルワークのタッチパッド
JP5063500B2 (ja) 2008-02-08 2012-10-31 富士通コンポーネント株式会社 パネル型入力装置、パネル型入力装置の製造方法、及びパネル型入力装置を備えた電子機器
JP2012142016A (ja) * 2008-02-08 2012-07-26 Fujitsu Component Ltd パネル型入力装置、パネル型入力装置の製造方法、及びパネル型入力装置を備えた電子機器
KR101172113B1 (ko) * 2008-11-14 2012-08-10 엘지이노텍 주식회사 터치스크린 및 그 제조방법
KR101142566B1 (ko) * 2010-06-01 2012-05-03 삼성모바일디스플레이주식회사 터치스크린패널 및 이를 구비한 영상표시장치
JP2012093985A (ja) * 2010-10-27 2012-05-17 Nitto Denko Corp タッチ入力機能を有する表示パネル装置と該表示パネル装置のための光学ユニット、並びにその製造方法
JP5739742B2 (ja) 2010-11-04 2015-06-24 日東電工株式会社 透明導電性フィルムおよびタッチパネル
JP6328984B2 (ja) * 2013-05-22 2018-05-23 日東電工株式会社 両面透明導電性フィルムおよびタッチパネル

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003173238A (ja) * 2001-12-05 2003-06-20 Sharp Corp タッチセンサおよびタッチセンサ付き表示装置
JP2003197035A (ja) * 2002-09-24 2003-07-11 Gunze Ltd 透明導電性フィルム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003173238A (ja) * 2001-12-05 2003-06-20 Sharp Corp タッチセンサおよびタッチセンサ付き表示装置
JP2003197035A (ja) * 2002-09-24 2003-07-11 Gunze Ltd 透明導電性フィルム

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008091116A (ja) * 2006-09-29 2008-04-17 Gunze Ltd タッチパネル及びタッチパネルの製造方法
WO2009025454A2 (fr) * 2007-08-23 2009-02-26 Essdesign Bloc numérique à commutateur à toucher lisse
WO2009025454A3 (fr) * 2007-08-23 2009-06-11 Essdesign Bloc numérique à commutateur à toucher lisse
JP2010253813A (ja) * 2009-04-24 2010-11-11 Nissha Printing Co Ltd 艶消し状導電性ナノファイバーシート及びその製造方法
JP2012025158A (ja) * 2010-06-25 2012-02-09 Gunze Ltd 透明面状体及び透明タッチパネル
TWI634466B (zh) * 2014-03-25 2018-09-01 日商富士軟片股份有限公司 觸控面板模組及電子裝置
US10101861B2 (en) 2014-03-25 2018-10-16 Fujifilm Corporation Touch panel module and electronic apparatus

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