Source: http://www.google.com/patents/US8003200?dq=6668407
Timestamp: 2015-04-25 12:12:09
Document Index: 416937433

Matched Legal Cases: ['Application No. 2006101121901', 'Application No. 2005800288535', 'Application No. 2005', 'Application No. 10', 'Application No. 10', 'Application No. 10', 'Application No. 94133872', 'Application No. 095129746']

Patent US8003200 - Transparent electrically-conductive film - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA transparent electrically-conductive film of the present invention comprises a transparent film substrate, a hard coat layer formed on one side of the transparent film substrate, a SiOx layer with a thickness of 10 nm to 300 nm that is formed on the hard coat layer by a dry process, and a transparent...http://www.google.com/patents/US8003200?utm_source=gb-gplus-sharePatent US8003200 - Transparent electrically-conductive filmAdvanced Patent SearchPublication numberUS8003200 B2Publication typeGrantApplication numberUS 11/664,583Publication dateAug 23, 2011Filing dateSep 27, 2005Priority dateOct 6, 2004Also published asCN100442083C, CN101010601A, US20080096013, WO2006038494A1Publication number11664583, 664583, US 8003200 B2, US 8003200B2, US-B2-8003200, US8003200 B2, US8003200B2InventorsTomotake Nashiki, Hideo Sugawara, Hidehiko Andou, Hidetoshi YoshitakeOriginal AssigneeNitto Denko CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (46), Non-Patent Citations (12), Referenced by (2), Classifications (17), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetTransparent electrically-conductive film
2. The transparent electrically-conductive film according to claim 1, wherein a water vapor transmission rate of the SiOx layer side of the transparent electrically-conductive film is 2 g/(m2�24 h�atm) or less.
The transparent electrically-conductive film preferably has a water vapor transmission rate of 2 g/(m2�24 hr�atm) or less on the SiOx layer side. If the water vapor transmission rate is set 2 g/(m2�24 hr�atm) or less, moisture intrusion to both sides of the film substrate can be controlled more equally with reference to the transparent electrically-conductive thin layer side, so that waving and curling can be further prevented. The water vapor transmission rate is preferably 1.5 g/(m2�24 h�atm) or less.
Any thin layer material may be used without particular limitation to form the transparent electrically-conductive thin layer 2. For example, a tin oxide-containing indium oxide material, an antimony-containing tin oxide material and the like are preferably used. Examples of methods for forming the transparent electrically-conductive thin layer 2 include vacuum deposition methods, sputtering methods, ion plating methods, and coating methods. Any appropriate method may be used depending on the type of the material and the desired layer thickness. In particular, a tin oxide-containing indium oxide material (indium tin oxide, ITO) is preferred. As stated above, the thickness of the transparent electrically-conductive thin layer 2 is from 20 to 35 nm. The transparent electrically-conductive thin layer 2 is preferably a continuous coating layer having good electrical conductivity characterized by a surface resistance of 1�103 Ω/square or less.
In the transparent electrically-conductive film of the invention, the SiOx layer 4 that is formed by a dry process so as to have the above thickness allows control such that the water vapor transmission rate from the SiOx layer 4 side can be equal to the water vapor transmission rate from the transparent electrically-conductive thin layer 2 side. The water vapor transmission rate from the SiOx layer 4 side is preferably 2 g/(m2�24 hr�atm) or less, more preferably 1.5 g/(m2�24 hr�atm) or less. The water vapor transmission rate from the transparent electrically-conductive thin layer 2 side is preferably the same as mentioned above.
The invention is more specifically described below by showing some examples of the invention. Hereinafter, the term �part or parts� means part or parts by weight. The index of light refraction (refractive index) is a value measured with an Abbe refractometer at 25� C.
A transparent electrically-conductive thin layer made of a 25 nm-thick ITO layer (with a refractive index of 2.00) was formed on one side of a 25 μm-thick polyethylene terephthalate film (PET Film 1) by a reactive sputtering method using a sintered material composed of 90% by weight of indium oxide and 10% by weight of tin monoxide in a 4�103 Torr atmosphere composed of 80% argon gas and 20% oxygen gas.
A toluene solution was prepared by adding 5 parts of a photo polymerization initiator of hydroxycyclohexyl phenyl ketone (Irgacure 184 manufactured by Ciba Specialty Chemicals Inc.) to 100 parts of an acrylic urethane resin (Unidic 17-806 manufactured by Dainippon Ink and Chemicals, Incorporated) and diluting the mixture with toluene to a concentration of 50% by weight. The toluene solution was applied to one side of a 125 μm-thick polyethylene terephthalate film (PET Film 2), dried at 100� C. for 3 minutes and then immediately irradiated with ultraviolet light from two ozone-type high-pressure mercury lamps (each 80 W/cm, 15 cm focused radiation) to form a 5 μm-thick hard coat layer.
A transparent acrylic pressure-sensitive adhesive layer (a mixture of 1 part of an isocyanate crosslinking agent and 100 parts of an acrylic copolymer of butyl acrylate, acrylic acid and vinyl acetate (100:2:5 in weight ratio)) with a controlled elastic modulus of 10 N/cm2 was formed with a thickness of about 20 μm on the hard coat-free and SiOx layer-free side of the PET Film 2. The transparent electrically-conductive thin layer-free side of the PET Film 1 was attached to the surface of the pressure-sensitive adhesive layer so that a transparent electrically-conductive film was prepared. The elastic modulus (dynamic storage modulus G′) is a value determined by temperature variance measurement at a frequency of 1 Hz and 20� C. with a viscoelastic spectrometer (ARES system manufactured by Rheometric Scientific Ltd.).
A transparent electrically-conductive film and a touch panel were prepared using the process of Example 1, except that a thermosetting resin layer was formed as described below when the ITO layer was formed on the PET Film 1 and that a silica coat layer (SiO2, index of light refraction n=1.46) was formed by a silica coating process before the ITO layer was formed. The thermosetting resin layer formed was a 150 nm-thick layer of a thermosetting resin composed of a melamine resin, an alkyd resin and an organic silane condensate (2:2:1 in weight ratio) (index of light refraction n=1.54). A silica sol (COLCOAT P manufactured by COLCOAT CO., Ltd.) was diluted with ethanol to a solids content of 2% by weight. The diluted material was applied to the thermosetting resin layer and then dried and cured at 150� C. for 2 minutes to form an about 30 nm-thick silica coat layer.
A transparent electrically-conductive film and a touch panel were prepared using the process of Example 1, except that a silica coat layer (SiO2) was formed on the hard coating by a silica coating process (wet process) in place of the SiOx layer formed by vacuum deposition. In the silica coating process, a silica sol (COLCOAT P manufactured by COLCOAT CO., Ltd.) was diluted with ethanol to a solids content of 2% by weight, and the diluted material was dried and cured at 150� C. for 2 minutes to form an 80 nm-thick silica coat layer.
The transparent electrically-conductive film was cut into a 10 cm square piece. The piece was heated at 150� C. for 1 hour and allowed to stand at an ordinary temperature and an ordinary humidity (23� C. and 50% RH) for 1 hour. Thereafter, the piece was allowed to stand for 30 minutes in an environment at a temperature of 60� C. and a humidity of 95% RH and then placed on a level support plate such that the transparent electrically-conductive thin layer faced upward, when the distance from the support plate to each of the four corners of the transparent electrically-conductive film was measured. The maximum of the distances was defined as the curl height (mm).
The water vapor transmission rate was determined according to JIS Z 0208. Specifically, a moisture permeable cup made of aluminum was used in which a certain amount of a moisture absorbent (calcium chloride) was placed. The transparent electrically-conductive film was placed over the opening of the cup, and the interstices therebetween were sealed with wax. The moisture permeable cup was then placed in a thermo-hygrostat at 40� C. and 90% RH, while its weight was measured over time. The measured gradient (A) and the formula below were used to determine the water vapor transmission rate. The smaller value of the water vapor transmission rate can be evaluated as indicating better water vapor barrier properties.
(g/(m2�24 hr�atm))=A(g/hr)/(π�0.03�0.03)�24(hr)�1(atm)
(g/(m2 � 24 hr � atm))
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS5645901Dec 8, 1994Jul 8, 1997Sharp Kabushiki KaishaElectrode substrate for liquid crystal display device and liquid crystal display deviceUS6399222Dec 16, 1998Jun 4, 2002Tdk CorporationMultilayer; glass, electroluminescence structure and barrierUS6603085Mar 26, 2001Aug 5, 2003Toyo Boseki Kabushiki KaishaTransparent conductive film, transparent conductive sheet and touchpanelUS6611090 *Jul 26, 1999Aug 26, 2003Sony CorporationAnti-reflective coating for a CRT having first and second optical thin films in combination with an adhesion layerUS6665029Nov 8, 2001Dec 16, 2003Nitto Denko CorporationOptical path changing film and reflective liquid-crystal display device including sameUS6720955Jan 31, 2002Apr 13, 2004Nitto Denko CorporationTransparent conductive laminated body and touch panelUS7190354Jul 15, 2003Mar 13, 2007Fuji Photo Film Co., Ltd.Inner type touch panel, process for producing the same and display unitUS20010037935Mar 26, 2001Nov 8, 2001Toshiyuki OyaTransparent conductive film, transparent conductive sheet and touchpanelUS20020158853Jan 31, 2002Oct 31, 2002Hideo SugawaraTransparent conductive laminated body and touch panelUS20030186040Jun 18, 2002Oct 2, 2003Taro OyaNear infrared ray shielding filmUS20050237307Feb 5, 2004Oct 27, 2005Yoshihiro HiedaTransparent laminate, pen-input image display, and image display methodUS20060108050Oct 27, 2003May 25, 2006Masayuki SatakeAdhesive optical film, method for manufacturing adhesive optical film and image displayUS20080020202Apr 22, 2005Jan 24, 2008Nitto Denko CorporationTransparent Conductive Multilayer Body And Touch PanelCN1253634AMar 2, 1998May 17, 2000株式会社百乐Stainproof liquid crystal displayCN1328656AOct 1, 1999Dec 26, 2001麦克罗托曲体系股份有限公司Scratch resistant display and method of making same using homeotropic liquid crystal silanesEP1016893A1Mar 2, 1998Jul 5, 2000Kabushiki Kaisha PilotStainproof liquid crystal displayEP1452556A1Jun 18, 2002Sep 1, 2004Teijin LimitedNear infrared ray shielding filmJP2000040896A Title not availableJP2002073282A Title not availableJP2002117724A Title not availableJP2002326301A Title not availableJP2003002985A Title not availableJP2003094548A Title not availableJP2003236969A Title not availableJP2003320609A Title not availableJP2004046728A Title not availableJP2004170907A Title not availableJP2004259256A Title not availableJP2004322380A Title not availableJP2005000308A Title not availableJP2006139750A Title not availableJP2006179274A Title not availableJPH025308A Title not availableJPH08132554A Title not availableJPH08167726A Title not availableJPH11216794A Title not availableJPH11286066A Title not availableKR20010093732A Title not availableTW550598B Title not availableTW562736B Title not availableTW574515B Title not availableWO2000020917A1Oct 1, 1999Apr 13, 2000Microtouch Systems IncScratch resistant display and method of making same using homeotropic liquid crystal silanesWO2003000779A1Jun 18, 2002Jan 3, 2003Teijin LtdNear infrared ray shielding filmWO2004038464A1Oct 27, 2003May 6, 2004Nitto Denko CorpAdhesive optical film, method for manufacturing adhesive optical film and image displayWO2004070605A1Feb 5, 2004Aug 19, 2004Nitto Denko CorpTransparent laminate, pen-input image display, and image display methodWO2005106897A1Apr 22, 2005Nov 10, 2005Nitto Denko CorpTransparent conductive multilayer body and touch panel* Cited by examinerNon-Patent CitationsReference1Chinese Office Action dated Aug. 14, 2009, issued in corresponding Chinese Patent Application No. 2006101121901.2Chinese Office Action dated Dec. 28, 2007, issued in corresponding Chinese Patent Application No. 2005800288535.3International Preliminary Report dated Apr. 19, 2007, issued in International Application No. PCT/JP2005/017741 (Forms PCT/IB/338 and PCT/IB/373 and PCT/ISA/237).4International Search Report of PCT/JP2005/017741, date of mailing Jan. 10, 2006.5International Search Report of PCT/JP2007/061558, Mailing Date of Jul. 31, 2007.6Japanese Office Action dated Oct. 20, 2010, issued in related Japanese Patent Application No. 2005-273557.7Korean Office Action dated Mar. 31, 2010, issued in related Korean patent Application No. 10-2008-7031998.8Korean Office Action dated Sep. 3, 2010, issued in related Korean Patent Application No. 10-2008-7031998.9Korean Office Action dated Sep. 3, 2010, issued in related Korean Patent Application No. 10-2010-7011046.10Notification of Transmittal of Translation of the International Preliminary Report on Patentability (Form PCT/IB/338) of International Application No. PCT/JP2007/061558 mailed Feb. 19, 2009 with Forms PCT/IB/373 and PCT/ISA/237.11Taiwan Office Action, issued in corresponding Chinese Patent Application No. 94133872, 1997.12Taiwanese Office Action dated Nov. 27, 2009, issued in corresponding Taiwanese Patent Application No. 095129746.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8873783 *Mar 17, 2011Oct 28, 2014Advanced Bionics AgWaterproof acoustic element enclosures and apparatus including the sameUS20130010992 *Mar 17, 2011Jan 10, 2013Koester Kurt JWaterproof acoustic element enclosures and apparatus including the same* Cited by examinerClassifications U.S. Classification428/212, 428/411.1, 428/690, 428/917, 313/504, 257/449, 313/506, 257/431International ClassificationB32B7/02Cooperative ClassificationY10S428/917, G06F3/045, G02B1/105, G02B27/0006, G02B1/116European ClassificationG02B1/11D2M, G02B1/10B, G06F3/045Legal EventsDateCodeEventDescriptionApr 4, 2007ASAssignmentOwner name: NITTO DENKO CORPORATION, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NASHIKI, TOMOTAKE;SUGAWARA, HIDEO;ANDOU, HIDEHIKO;AND OTHERS;REEL/FRAME:019153/0263Effective date: 20070319RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services