CN1621473A - Double faced adhesive tape for shielding light - Google Patents
Double faced adhesive tape for shielding light Download PDFInfo
- Publication number
- CN1621473A CN1621473A CNA2004100879458A CN200410087945A CN1621473A CN 1621473 A CN1621473 A CN 1621473A CN A2004100879458 A CNA2004100879458 A CN A2004100879458A CN 200410087945 A CN200410087945 A CN 200410087945A CN 1621473 A CN1621473 A CN 1621473A
- Authority
- CN
- China
- Prior art keywords
- adhesive tape
- faced adhesive
- double faced
- shielding light
- base material
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
Abstract
Tine invention aims to provide a double-sided adhesive tape for shading having sufficient shading property without providing a metal deposition layer. The double-sided adhesive tape for shading is obtained by providing an adhesive layer on both surfaces of a laminate having a coloring layer on at least either one surface of a coloring base material.
Description
Technical field
The present invention relates to a kind of double faced adhesive tape, relate in particular to double faced adhesive tape for shielding light that a kind of light that is applicable to the backlight of the liquid-crystal display that prevents to be used for mobile telephone etc. etc. exposes, attaching the liquid crystal panel of this stickup band and the portable electric appts that uses this stickups to be with.
Background technology
Along with the miniaturization and energy-conservationization of the electronics of mobile telephone or PDA (personal digital assistant Personal Data Assistants) representative, the pictorial display that is undertaken by liquid crystal panel enlarges just rapidly.These liquid-crystal displays are in order to ensure the lightness of picture, also being the center from the backlight of the backside illuminated light of liquid crystal panel.In this case, for the fixing of liquid crystal panel end or prevent dust from invading and use double faced adhesive tape, in addition, in order to prevent to expose light from this end, as above-mentioned stickup band, use be with evaporation the plastics film of metals such as aluminium be (patent documentation 1) of base material.But evaporation has not only increased manufacturing cost, and; because on by the metallic film of evaporation, be easy to generate aperture, therefore, not only have to carry out the evaporation more than 2 layers; because the evaporation layer scratches easily, also protective layer must be set, thereby the shortcoming that more increases cost is arranged.
Patent documentation 1: TOHKEMY 2002-23663 communique
The present inventor finds for the result who solves above-mentioned shortcoming and inquire into keen determination, on at least one surface of painted base material, be provided with under the situation of pigmented layer, even not being set, the metal evaporation layer can not have sufficient opacifying property yet, moreover, can also improve reflectivity backlight, can more effectively make and use up, thereby finish the present invention.
Summary of the invention
Thereby, even the 1st purpose of the present invention provides a kind of opacifying property double faced adhesive tape that the metal evaporation layer also has sufficient opacifying property that is not provided with.
The 2nd purpose of the present invention provide a kind of make because not needing only to have the layer of protective layer function rhythmo structure oversimplify, than the opacifying property double faced adhesive tape of existing cheapness.
The 3rd purpose of the present invention provides a kind of liquid crystal panel backlight that is not easy to leak.
And the 4th purpose of the present invention provides the portable electric appts that a kind of liquid crystal display picture is easily seen (clear).
Above-mentioned each purpose of the present invention is two sides that the surface by at least one side of painted base material has a multilayer body of the pigmented layer double faced adhesive tape for shielding light that is provided with adhering agent layer and forms, attaching liquid crystal panel that this band makes, and the portable electric appts that uses above-mentioned band to form reach.
Preferably below 0.01%, from this viewpoint, above-mentioned painted base material and pigmented layer preferably are black to double faced adhesive tape for shielding light integral body to the transmitance of visible light.
In addition, on the arbitrary surfaces of described painted base material or pigmented layer to the luminous reflectance factor of the light of 350～550nm preferably more than 70%, from this viewpoint, preferably above-mentioned painted base material is a black for the white pigmented layer.
The effect of invention
Double faced adhesive tape for shielding light of the present invention because do not need the operation of evaporation metal, thereby does not only have aperture, and the shading performance is also very abundant, and is therefore not only cheap, can also be suitable for the end fixing tape into the backlight liquid crystal panel.In addition, used the portable electric appts of double faced adhesive tape for shielding light of the present invention, liquid crystal panel clear (easily seeing) and cheap.
The simple declaration of accompanying drawing
Fig. 1 is the figure of the structure example of expression double faced adhesive tape for shielding light of the present invention.
Label declaration
The painted base material of 1-, 2-pigmented layer, 3-adhering agent layer, 4-adhering agent layer.
Embodiment
Painted base material used in the present invention can suitably be selected to use in known base material, still, from aspects such as intensity, preferably uses the coloured plastics film.Employed in this case plastics film is not particularly limited, but, from intensity and cost, easily obtaining property or readily bondable aspect, preferred polyethylene terephthalate film (hereinafter to be referred as the PET film), extended polypropylene film, acrylonitrile-butadiene-styrene copolymer film, the polystyrene films etc. of using particularly preferably are the PET film.
As having with the method for plastics film as painted base material, mix tinting material (dyestuff or pigment) in the plastics before film shaped thus method, by printing or be coated with the method that pigmented layer is set on the plastics film surface of being contained in, attaching other coloured plastics films etc. on the frosting or when making base material film, pushing the method for other coloured plastics film laminations simultaneously and with these methods that combine etc., but, from the viewpoint of easy manufacturing or cost, particularly preferably be the method for in plastics, mixing tinting material (dyestuff or pigment).At this moment employed tinting material (dyestuff or pigment) can suitably be selected from known tinting material, still, from abundant painted viewpoint, preferably uses pigment.
Painted color is not particularly limited, still, and from the viewpoint of opacifying property black preferably, from the viewpoint that reflects light backlight white preferably.In addition, by giving painted base material anti-electrostatic jamming performance, can prevent sneaking into of black.
The thickness of painted base material can corresponding employed material and suitably design, still, 15～100 μ m normally, the viewpoint of the easy processing of the product when becoming band particularly preferably is 20～50 μ m.
Be arranged at least one lip-deep pigmented layer of the painted base material that manufacturing as mentioned above forms, can be provided with by printing or application, the attaching of coloured film or the methods such as coating of painted tackiness agent.The color of this pigmented layer is not specially limited, still, and from making the viewpoint preferred white of luminous reflectance backlight, from the preferred black of the viewpoint of opacifying property.In addition,, preferably on the single face of painted base material, carry out printing or application more than twice, thereby perhaps on the two sides of painted base material, print or application is provided with pigmented layer in order to improve opacifying property.In addition, the thickness of pigmented layer is 0.5～10 μ m, preferably 1.5～7 μ m.During pigmented layer less than 0.5 μ m, can not obtain sufficient opacifying property, guarantee sufficient opacifying property, then must increase the amount of tinting material, thereby the intensity of pigmented layer become not enough even the degree of staining of painted base material is very high.Thereby, under situation, preferably, chromatograph solves above-mentioned shortcoming on the two sides of painted base material by suitably being set with the pigmented layer attenuation.In addition,, can further not improve the shading performance even surpass 10 μ m yet, thus uneconomical.
Tackiness agent used in the present invention can suitably be selected in the employed known tackiness agent from the purposes identical with the purposes of band of the present invention, still, from the viewpoint of adhesiveproperties or versatility, preferably uses the acrylic acid or the like tackiness agent.In addition, thus also can in this adhering agent layer, add tinting material as painted adhering agent layer.Especially, by forming the black sticker layer, can not produce, thereby be preferred from the light leak of adhering agent layer end.And, also can in the scope of harmless adhesiveproperties, in this adhering agent layer, add the additive of anti-electrostatic agent interfering etc.
The thickness that is arranged on the adhering agent layer on the two sides of multilayer body of painted base material and pigmented layer can be 2～15 μ m usually, particularly preferably is about 5～12 μ m.During less than 2 μ m, cementability is insufficient, when surpassing 15 μ m, has the situation that tackiness agent is extruded during use, thereby is not preferred.On the surface of adhering agent layer, suitable known stripping film can be set.Thus, can use the handlability of preceding double faced adhesive tape of the present invention good.In addition, by using anti-electrostatic interferential stripping film, can prevent sneaking into of foreign matter.
Double-sided belt of the present invention is used under the situation in the backlight liquid crystal panel, preferably do not have in fact light expose, to 400～～transmittance of the visible light of 700nm wave band is below 0.01%.Under the situation of special attention opacifying property, preferably making painted base material and pigmented layer is black.As tinting material, preferably use for example tinting material of carbon black and so on black.
Thereby from making luminous reflectance backlight realize the viewpoint of effective utilization of light, preferred above-mentioned luminous reflectance factor during with measuring with 350～550nm wave band on the pigmented layer that begins most to be shone or the painted substrate surface backlight is more than 70%.Like this, can effectively use light backlight when stickup band of the present invention is used in the backlight liquid crystal panel.From improving the viewpoint of reflectivity, tinting material is not that black is better, preferably uses for example tinting material of the off-white color of titanium oxide.
From two aspects of opacifying property and reflection light backlight, preferred painted base material is a white, and pigmented layer is a black.Such shading double-sided belt is that the painted base material with white is positioned at backlight side, and the pigmented layer of black is positioned at the mode of liquid crystal panel side and be used.
Double faced adhesive tape for shielding light of the present invention is used to stationary liquid crystal panel and module backlight.Usually be used under the state that liquid crystal panel or size processing of cutting backlight are the margo frontalis shape for being fit to.
Below, according to embodiment the present invention is described in more details, still, the present invention is not limited to this.
And the measurement of transmittance and luminous reflectance factor is to use that " UV-3101PC " of Shimadzu Seisakusho Ltd.'s corporate system is following to carry out.
Transmittance: the mean value of the transmitance during with the visible light of shining 400～700nm wave band on double faced adhesive tape for shielding light is transmittance.
Luminous reflectance factor: the mean value of the reflectivity with from the visible light of painted base material side irradiation 350～550nm wave band of double faced adhesive tape for shielding light the time is as luminous reflectance factor.
(embodiment 1)
As base material, be that white polyethylene terephthalate film (East レ society's system " Le ミ ラ one E20 " reflectivity at thickness 38 μ m is more than 80%) single face on, the black ink (East ocean イ Application キ that uses gravure printing machine that intaglio printing is used splits the society's system of making " LB Network ロ ") carry out twice coating and drying, form the pigmented layer of thickness 2 μ m.Applying propylene class tackiness agent (リ Application テ Star Network society's system " PA-T1 ") respectively and make its dried thickness in base material side and pigmented layer side is 10 μ m, thereby and carries out 2 minutes dry double faced adhesive tape for shielding light that obtain under 80 ℃.The transmittance of this double faced adhesive tape for shielding light is 0.001%, reflectivity is 80%.
With resulting stickup band be used for the liquid crystal panel of mobile telephone and module backlight fixedly the time, not only picture is limpid in sight, the light backlight that also can not observe the liquid crystal panel end spills, and is very good.
(embodiment 2)
As base material, be in the black polyethylene terephthalate film (of thickness 38 μ m East レ society's system " Le ミ ラ one X30 ") single face on, utilize intaglio printing with intaglio printing with black ink (East ocean イ Application キ society's system " LB Network ロ ") carry out twice coating and drying repeatedly, the pigmented layer of thickness 2 μ m is set.Then and embodiment 1 adhering agent layer similarly is set, obtain double faced adhesive tape for shielding light.The transmittance of this double faced adhesive tape for shielding light is 0.001%.
With resulting stickup band be used for the liquid crystal panel of mobile telephone and module backlight fixedly the time, not only picture is limpid in sight, also can not observe light backlight and spill, and is very good.
(embodiment 3)
Become the tackiness agent of black thereby in solids component 100 weight parts of acrylic acid or the like tackiness agent used in embodiment 2, add 10 parts by weight of carbon black, can similarly obtain double faced adhesive tape for shielding light with embodiment 2.The transmittance of this double faced adhesive tape for shielding light is 0.001%.
With resulting stickup band be used for the liquid crystal panel of mobile telephone and module backlight fixedly the time, not only picture is limpid in sight, also can not observe light backlight and spill, and is very good.
Claims (9)
1, a kind of double faced adhesive tape for shielding light is characterized by, and the two sides that at least one side's of its painted base material surface has a multilayer body of pigmented layer is provided with adhering agent layer and forms.
2, according to the described double faced adhesive tape for shielding light of claim 1, it is characterized by, the transmittance of 400～700nm wave band of described double faced adhesive tape for shielding light is below 0.01%.
3, according to claim 1 or 2 described double faced adhesive tape for shielding light, it is characterized by, the reflectivity of 350～550nm wave band of the arbitrary surfaces of described painted base material or pigmented layer is more than 70%.
4, according to claim 1 or 2 described double faced adhesive tape for shielding light, it is characterized by, described painted base material and pigmented layer are black.
5, according to any described double faced adhesive tape for shielding light in the claim 1～3, it is characterized by, described painted base material is a white, and pigmented layer is a black.
6, according to claim 4 or 5 described double faced adhesive tape for shielding light, it is characterized by, the adhering agent layer that is arranged on the pigmented layer of the painted base material of described black or black is the black sticker layer.
7, according to any described double faced adhesive tape for shielding light in the claim 1～6, it is characterized by, described pigmented layer constitutes by 2 layers at least.
8, a kind of liquid crystal panel is characterized by, and it is attaching, and any described double faced adhesive tape for shielding light forms in the claim 1～6.
9, a kind of portable electric appts is characterized by, and it is to use, and in the claim 1～6 any described double faced adhesive tape for shielding light forms.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP365697/2003 | 2003-10-27 | ||
| JP2003365697A JP2005126624A (en) | 2003-10-27 | 2003-10-27 | Double-sided adhesive tape for shading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1621473A true CN1621473A (en) | 2005-06-01 |
| CN100475923C CN100475923C (en) | 2009-04-08 |
Family
ID=34644285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100879458A Active CN100475923C (en) | 2003-10-27 | 2004-10-27 | Double faced adhesive tape for shielding light |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2005126624A (en) |
| KR (1) | KR100804851B1 (en) |
| CN (1) | CN100475923C (en) |
| TW (1) | TW200519501A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059755A (en) * | 2011-10-20 | 2013-04-24 | 日东电工株式会社 | Adhesive tape |
| CN104085161A (en) * | 2014-07-08 | 2014-10-08 | 苏州佳值电子工业有限公司 | Shading and damping foam |
| JP2019026731A (en) * | 2017-07-28 | 2019-02-21 | リンテック株式会社 | Adhesive film and graphite sheet laminate |
| CN110938389A (en) * | 2018-09-25 | 2020-03-31 | 日东电工株式会社 | Adhesive sheet |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4973905B2 (en) * | 2005-03-18 | 2012-07-11 | Ｄｉｃ株式会社 | Light blocking adhesive tape for LCD module fixing |
| JP4749058B2 (en) * | 2005-07-04 | 2011-08-17 | 日東電工株式会社 | Double-sided adhesive tape or sheet having reflectivity and / or light shielding properties |
| JP4854225B2 (en) * | 2005-07-04 | 2012-01-18 | 日東電工株式会社 | Adhesive tape or sheet |
| JP4749085B2 (en) * | 2005-08-11 | 2011-08-17 | 日東電工株式会社 | Adhesive tape or sheet having reflectivity and / or light shielding properties |
| JP4688658B2 (en) * | 2005-12-06 | 2011-05-25 | 日東電工株式会社 | Shading adhesive sheet |
| JP5349751B2 (en) * | 2006-12-26 | 2013-11-20 | 日東電工株式会社 | Light shielding adhesive sheet and liquid crystal display device |
| JP5101179B2 (en) * | 2007-06-13 | 2012-12-19 | 日東電工株式会社 | Double-sided adhesive sheet for decoration |
| KR101119630B1 (en) | 2009-04-11 | 2012-03-07 | 주식회사 영우 | Adhesive tape for fixing backlight unit and lcd panel |
| JP5501264B2 (en) * | 2011-02-10 | 2014-05-21 | 日東電工株式会社 | Adhesive tape or sheet having reflectivity and / or light shielding properties |
| JP5419172B2 (en) * | 2011-03-17 | 2014-02-19 | 日東電工株式会社 | Adhesive tape or sheet |
| JP2011157554A (en) * | 2011-03-17 | 2011-08-18 | Nitto Denko Corp | Pressure-sensitive adhesive tape or sheet having light-reflecting and/or light-blocking properties |
| JP5562297B2 (en) * | 2011-07-16 | 2014-07-30 | 日東電工株式会社 | Adhesive tape or sheet |
| KR101432049B1 (en) | 2012-09-13 | 2014-08-21 | 대원케미칼(주) | Double sided adhesive tape for display window |
| JP6589359B2 (en) * | 2015-05-01 | 2019-10-16 | 三菱ケミカル株式会社 | Colored polyester film for adhesive tape substrate and adhesive tape |
| JP6574640B2 (en) * | 2015-08-19 | 2019-09-11 | 積水化学工業株式会社 | Double-sided adhesive tape and liquid crystal display device |
| JP2017222798A (en) * | 2016-06-16 | 2017-12-21 | Dic株式会社 | Light-shielding adhesive tape and liquid crystal display device |
| KR101914376B1 (en) * | 2017-06-14 | 2018-11-01 | 고형수 | Double-sided adhesive tape |
| CN109943241A (en) * | 2019-03-01 | 2019-06-28 | 在贤电子（苏州）有限公司 | High stability shading rubber belt and its processing method |
| JP2020164615A (en) * | 2019-03-29 | 2020-10-08 | 日東電工株式会社 | Pressure sensitive adhesive sheet |
| JP7339009B2 (en) * | 2019-03-29 | 2023-09-05 | 日東電工株式会社 | Adhesive sheet |
| JP7420533B2 (en) * | 2019-11-11 | 2024-01-23 | 日東電工株式会社 | Double-sided adhesive sheet and image display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0882716A (en) * | 1994-09-13 | 1996-03-26 | Hitachi Ltd | Liquid crystal display device |
| JP3879899B2 (en) * | 2001-02-09 | 2007-02-14 | 大日本インキ化学工業株式会社 | Shading adhesive sheet |
| JP3690298B2 (en) * | 2001-02-23 | 2005-08-31 | ソニーケミカル株式会社 | Liquid crystal display element |
| JP4247655B2 (en) | 2002-03-29 | 2009-04-02 | Ｄｉｃ株式会社 | Colored adhesive tape |
| KR100987679B1 (en) * | 2002-08-12 | 2010-10-13 | 디아이씨 가부시끼가이샤 | Adhesive tape for liquid crystal display module combining light reflectivity and light shielding |
| JP2005060435A (en) * | 2003-08-14 | 2005-03-10 | Three M Innovative Properties Co | Double-sided pressure-sensitive adhesive sheet |
-
2003
- 2003-10-27 JP JP2003365697A patent/JP2005126624A/en active Pending
-
2004
- 2004-10-18 TW TW093131532A patent/TW200519501A/en unknown
- 2004-10-26 KR KR1020040085737A patent/KR100804851B1/en active IP Right Grant
- 2004-10-27 CN CNB2004100879458A patent/CN100475923C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059755A (en) * | 2011-10-20 | 2013-04-24 | 日东电工株式会社 | Adhesive tape |
| CN104085161A (en) * | 2014-07-08 | 2014-10-08 | 苏州佳值电子工业有限公司 | Shading and damping foam |
| JP2019026731A (en) * | 2017-07-28 | 2019-02-21 | リンテック株式会社 | Adhesive film and graphite sheet laminate |
| CN110938389A (en) * | 2018-09-25 | 2020-03-31 | 日东电工株式会社 | Adhesive sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200519501A (en) | 2005-06-16 |
| KR20050040107A (en) | 2005-05-03 |
| CN100475923C (en) | 2009-04-08 |
| KR100804851B1 (en) | 2008-02-20 |
| JP2005126624A (en) | 2005-05-19 |
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