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CN106896425A - Protective film and polarizing plate using same - Google Patents

Protective film and polarizing plate using same Download PDF

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Publication number
CN106896425A
CN106896425A CN201611044646.5A CN201611044646A CN106896425A CN 106896425 A CN106896425 A CN 106896425A CN 201611044646 A CN201611044646 A CN 201611044646A CN 106896425 A CN106896425 A CN 106896425A
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CN
China
Prior art keywords
diaphragm
protective layer
degree
polarizing film
shaft angle
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
Application number
CN201611044646.5A
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Chinese (zh)
Other versions
CN106896425B (en
Inventor
篮钲欣
陈兮婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumika Technology Co Ltd
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Sumika Technology Co Ltd
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
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Publication of CN106896425A publication Critical patent/CN106896425A/en
Application granted granted Critical
Publication of CN106896425B publication Critical patent/CN106896425B/en
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14Protective coatings, e.g. hard coatings
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G02B5/305Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)

Abstract

A protective film and a polarizing plate using the same. The protective film includes a protective layer. The protective layer has an axial angle between 0 and 20 degrees. The passivation layer further has an X-axis and a slow axis, wherein the axis angle is an angle between the slow axis and the X-axis. The protective layer of the present invention has a low axial angle itself, and thus the protective film has excellent characteristics of low glare, low rainbow patterns, or even no glare or no rainbow patterns. Thus, even if the polarizing plate is observed at an oblique angle, the protective film does not generate excessively strong glare or even does not generate glare, so that the quality condition of the polarizing film under the protective film can be clearly observed by eyes.

Description

Diaphragm and the Polarizer using the diaphragm
Technical field
The invention relates to a kind of diaphragm and using its Polarizer, and there is low shaft angle in particular to one kind Diaphragm and apply its Polarizer.
Background technology
Traditional Polarizer includes light polarizing film and diaphragm, and diaphragm is formed in light polarizing film.In inspection, typically with Whether the light polarizing film under visual observations diaphragm has defect.However, diaphragm would generally be reflective, its dazzle for producing can hinder Offend the eye inspection of the eyeball to light polarizing film.
Therefore, a kind of new technology of proposition is needed badly to go to improve the glare problem of existing diaphragm.
The content of the invention
The present invention proposes the Polarizer of a kind of diaphragm and the application diaphragm, to improve dazzling for diaphragm in the prior art Optical issue.
The object of the present invention is achieved like this, and a kind of diaphragm, the diaphragm includes:
One protective layer, with a shaft angle degree between 0 degree to 20 degree, the wherein protective layer has more an X-axis and one Slow phase axle, and the shaft angle degree be the slow phase axle it is folded with the X axis into angle.
Present invention also offers a kind of diaphragm, the diaphragm includes:
One protective layer, with a shaft angle degree and an X-axis;
Wherein, the direction toward the X-axis is looked, and the shaft angle degree of the middle section of the width of the protective layer is less than near the guarantor The shaft angle degree of the two-end-point of sheath.
In a specific embodiment, the difference of the shaft angle degree of any two points of the protective layer is less than 20 degree.
In a specific embodiment, the material of the protective layer is selected from polyester resin, olefin resin, cellulose acetate tree Fat, polycarbonate resin, acrylic resin, polybutylene terephthalate, polyethylene, polypropylene, cyclic olefin resins or its group Close, wherein the polyester resin is PET or PEN, and the acrylic resin is poly- methyl Methyl acrylate.
In a specific embodiment, the diaphragm is further included:
One bonding coat, is formed on the protective layer;
Wherein, the bonding coat is made up of methacrylic acid copolymer;And/or the surface impedance of the bonding coat is less than 1012Ω/ □。
In a specific embodiment, the protective layer has a surface-treated layer;And/or the protective layer is through corona discharge skill Art is modified;And/or the protective layer is through being easily then chemically treated;And/or the surface impedance of the protective layer is less than 1011Ω/□;And/ Or the mist degree of the diaphragm is between 0.5% to 10%.
In a specific embodiment, the diaphragm is further included:
One release layer, covers the bonding coat.
In a specific embodiment, the thickness of the diaphragm is between 12 microns to 250 microns.
Present invention also offers a kind of Polarizer, the Polarizer includes:
One light polarizing film;And
The above-mentioned diaphragm, is configured in the light polarizing film.
In a specific embodiment, the light polarizing film includes:
One first coating;
One second coating;And
One polarizing layer, is formed between first coating and second coating.
In a specific embodiment, the diaphragm is to the peeling force of the light polarizing film between 0.02N/25mm to 0.3N/ Between 25mm;And/or the diaphragm is less than 3kV to the release band electricity of the light polarizing film.
Beneficial effects of the present invention:
Protective layer of the invention shaft angle degree in itself is relatively low, thus diaphragm have low dazzle, low rainbow line or even without Dazzle or without good characteristics such as rainbow lines.Even if consequently, it is possible to observe Polarizer with angle of inclination, diaphragm will not still be produced Strong dazzle does not produce dazzle even, makes the quality condition of the light polarizing film that eyes can be under clear view to diaphragm.
Brief description of the drawings
Fig. 1 is the schematic diagram according to the diaphragm of one embodiment of the invention.
Fig. 2 is the schematic diagram according to the Polarizer of one embodiment of the invention.
Fig. 3 is the schematic diagram according to the diaphragm of another embodiment of the present invention.
Wherein, reference:
10:Polarizer
100th, 100 ':Diaphragm
110:Protective layer
120:Bonding coat
130:Release layer
200:Light polarizing film
210:First coating
220:Polarizing layer
230:Second coating
A1、A2:Angle
S1:Curve
T1:Thickness
X、Y、Z:Reference axis
W1:Width
Specific embodiment
Fig. 1 is refer to, it is the schematic diagram according to the diaphragm 100 of one embodiment of the invention.Diaphragm 100 includes protection Layer 110 and bonding coat 120.Bonding coat 120 is formed on protective layer 110.
Protective layer of the invention 110 has low shaft angle degree, therefore can produce low dazzle characteristic.Protective layer as shown in Figure 1 Shown in the 110 width W1 and relation curve S1 of shaft angle degree, the shaft angle degree of protective layer 110 is less than a predetermined angular A1.Predetermined angle Degree A1 is, for example, that between 0 to 20 degree, diaphragm 100 can be made to produce low glare effect and rainbow line phenomenon can be reduced.Another In one embodiment, predetermined angular A1 can be less than 15 degree or lower.Shaft angle degree herein refers to the slow phase axle in protective layer 110 With folded by the X axis of protective layer 110 into angle, slow phase axle herein is also referred to as slow axis.
In one embodiment, as shown in figure 1, being looked toward the direction of X-axis, the width W1 of protective layer 110 of the embodiment of the present invention Middle section shaft angle degree be less than near protective layer 110 two-end-point shaft angle degree.In one embodiment, protective layer 110 The difference of the shaft angle degree of any two points is less than 20 degree, less than 15 degree, less than 10 degree or less than 5 degree.
The shaft angle degree of the protective layer 110 of the embodiment of the present invention is both less than predetermined angular A1, thus overall with width protective layer 110 Raw material or the finished product of diaphragm 100 all can be used completely, be not required to especially consider to remove the undesirable shaft angle degree portion high in edge Divide material, therefore material deterioration inside problem (shaft angle degree high easily produces dazzle and/or rainbow line) will not be produced, and technique can be reduced Step simultaneously increases product yield.
In the present embodiment, above-mentioned X axis is, for example, the width of protective layer 110, and Z axis are to being protective layer 110 Length bearing of trend.In another embodiment, X axis can be the length bearing of trend of protective layer 110, and Z axis are to can be The width of protective layer 110.In the measuring method of shaft angle degree, can using absorption axiss angel measuring instrument to protective layer 110 or Diaphragm 100 is measured.The model of absorption axiss angel measuring instrument such as model PLS-2R.
In one embodiment, the thickness T1 of diaphragm 100 is, for example, between 12 microns to 250 microns.Additionally, protection Layer 110 can be by polyester resin, olefin resin, acetyl cellulose resins, polycarbonate resin, acrylic resin, poly- terephthaldehyde Sour fourth diester (polyethylene terephthalate, PET), polyethylene (polyethylene, PE) or polypropylene (Polypropylene, PP), cyclic olefin resins or combinations of the above, wherein polyester resin are, for example, poly terephthalic acid second two Ester or PEN, and acrylic resin is, for example, polymethyl methacrylate (PMMA).
Additionally, surface-treated layer can be formed on the protective layer 110 of diaphragm 100, the antifouling of surface contamination is e.g. prevented Layer, the antistatic layer for preventing surface generation electrostatic effect, the hard conating for preventing cut etc..Above-mentioned antistatic layer is, for example, (a) Various cationic antistatic agents with the cation base such as quarternary ammonium salt, pyridine, primary amino radical, secondary amino group, tertiary amino;B () has There are the anionic antistatic agents of the anion base of sulfonic acid base, sulfuric ester base, phosphate base, phosphonic acids base etc.;(c) amino The both sexes antistatic additive of acids, amidosulphuric acid esters etc.;D the nonionic of () alkamine, glycerols, polyethylene glycols etc. resists quiet Electric agent;E () makes Polymer Antistatic Agent that antistatic additive molecular weight as described above obtains etc..
In another embodiment, it is also possible to surface is modified with corona discharge technology on the surface of protective layer 110, To increase the tackness between bonding coat 120 and protective layer 110.Or, can be carried out on protective layer 110 at easy then chemistry Reason, makes bonding coat 120 easily then in protective layer 110, can also reduce or even avoid residual silkgum content.
Additionally, bonding coat 120 can be by being, for example, that methacrylic acid copolymer material is made, e.g. can be including but not limited to The material of functional group, such as methyl methacrylate, EMA, butyl methacrylate, methacrylic acid 2- ethyls The materials such as own ester.
Fig. 2 is the schematic diagram according to the Polarizer 10 of one embodiment of the invention.Polarizer 10 includes diaphragm 100 and polarisation Film 200, wherein diaphragm 100 are configured in light polarizing film 200.In one embodiment, said protection film 100 can be cut into suitably After size, it is attached in light polarizing film 200, to form Polarizer 10.
Light polarizing film 200 includes the first coating 210, the coating 230 of polarizing layer 220 and second, and wherein polarizing layer 220 is formed Between the first coating 210 and the second coating 230.Diaphragm 100 is bonding on the of light polarizing film 200 by bonding coat 120 On one coating 210, wherein bonding coat 120 is located between the first coating 210 and protective layer 110.
Polarizing layer 220 can be that the polyvinyl alcohol (polyvinyl alcohol, PVA) of the dichroism pigment of absorption orientation is thin Film or mixed by liquid crystal material attaches absorption dye molecule and is formed.Polyvinyl alcohol can be formed by saponifying polyvinyl acetate. In certain embodiments, polyvinyl acetate can be the copolymerization of single polymers or vinyl acetate and other monomers of vinyl acetate Thing etc..Above-mentioned other monomers can be unsaturated carboxylic acid class, olefines, unsaturated sulfonic acid class or vinyl ethers etc..At other In embodiment, polyvinyl alcohol can be modified polyvinyl alcohol, for example, the polyvinyl formal, the polyethylene acetaldehyde that are modified through aldehydes Or polyvinyl butyral etc..
The material of the first coating 210 and the second coating 230 can be selected from by Triafol T (Triacetate Cellulose, TAC), polymethyl methacrylate (Polymethylmethacrylate, PMMA), polyethylene terephthalate Ester (Polyethylene Terephthalate, PET), polypropylene (Polypropylene, PP), cyclic olefin polymer (Cyclo Olefin Polymer, COP), makrolon (Polycarbonate, PC) or above-mentioned any combination constituted one Group.
As shown in Fig. 2 inclining the polarizing layer that an angle A 2 checks beneath light polarizing film 200 by diaphragm 100 with eyes Whether 220 have defect, and wherein angle A 2 is, for example, 45 degree, so can also be more than 45 degree, between such as 60 degree to 80 degree, or less than 45 Degree, such as close to 0 degree.Due to the embodiment of the present invention diaphragm 100 have low dazzle characteristic or free from glare characteristic, even if therefore with Polarizer 10 is observed at angle of inclination, and diaphragm 100 will not still produce too strong dazzle or not produce dazzle even, make eyes clear Chu observes the quality condition of the light polarizing film 200 under diaphragm 100.
Additionally, the mist degree of diaphragm 100 can be between 0.5% to 10%, preferably between 0.5% to 7%, most Good is between 0.5% to 5%;Such diaphragm 100 can have excellent translucency.
Diaphragm 100 to the peeling force of light polarizing film 200 (e.g. its first coating 210) can between 0.02 newton (N)/ 25 millimeters (mm) between 0.3N/25mm, preferably between 0.03N/25mm to 0.2N/25mm, most preferably between Between 0.04N/25mm to 0.15N/25mm;Consequently, it is possible to after Polarizer 10 fits in substrate, diaphragm 100 is easy certainly Light polarizing film 200 is removed.Additionally, for the antistatic effect of diaphragm 100, the surface impedance of protective layer 110 is less than 1011Ω/ , the surface impedance of bonding coat 120 is less than 1012Ω/, and bonding coat 120 is less than 3kV to the release band electricity of light polarizing film 200 (kilovolt), preferably less than 1kV, most preferably less than 0.5kV;Can so reduce or even avoid electrostatic injury protection film 100 and/ Or light polarizing film 200.
Fig. 3 is the schematic diagram according to the ' of diaphragm 100 of another embodiment of the present invention.In the present embodiment, the ' of diaphragm 100 In addition to comprising protective layer 110 and bonding coat 120, further include release layer 130, wherein bonding coat 120 be formed at protective layer 110 with Between release layer 130, and the covering bonding coat 120 of release layer 130.Because release layer 130 covers bonding coat 120, bonding can be avoided Layer 120 expose and from stick or be attached on other objects.Release layer 130 is configured at the (light polarizing film of light polarizing film 200 in the ' of diaphragm 100 200 are illustrated in Fig. 2) before, can be removed on first autoadhesion layer 120, to expose bonding coat 120, bonding coat 120 is binded inclined On light film 200.
Additionally, release layer 130 can be for example the pet film that surface scribbles mould release, mould release For example it is but not limited to silicones.In addition, in the measuring method of shaft angle degree, can be using absorption axiss angel measuring instrument to protective layer The 110 or ' of diaphragm 100 is measured.
In summary, the protective layer of embodiment of the present invention shaft angle degree in itself is relatively low, thus diaphragm have low dazzle, Low rainbow line or even free from glare or without good characteristics such as rainbow lines.Even if consequently, it is possible to observe Polarizer with angle of inclination, protecting Cuticula will not still produce too strong dazzle or not produce dazzle even, make the light polarizing film that eyes can be under clear view to diaphragm Quality condition.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence Knowing those skilled in the art can make various corresponding changes and deformation, but these corresponding changes and deformation according to the present invention The protection domain of the claims in the present invention should all be belonged to.

Claims (11)

1. a kind of diaphragm, it is characterised in that the diaphragm includes:
One protective layer, with a shaft angle degree between 0 degree to 20 degree, the wherein protective layer has more an X-axis and a slow phase Axle, and the shaft angle degree to be the slow phase axle folded with the X axis into angle.
2. a kind of diaphragm, it is characterised in that the diaphragm includes:
One protective layer, with a shaft angle degree and an X-axis;
Wherein, the direction toward the X-axis is looked, and the shaft angle degree of the middle section of the width of the protective layer is less than near the protective layer Two-end-point the shaft angle degree.
3. diaphragm as claimed in claim 1 or 2, it is characterised in that the difference of the shaft angle degree of any two points of the protective layer Less than 20 degree.
4. diaphragm as claimed in claim 1 or 2, it is characterised in that the material of the protective layer is selected from polyester resin, alkene tree Fat, acetyl cellulose resins, polycarbonate resin, acrylic resin, polybutylene terephthalate, polyethylene, polypropylene, ring Olefin resin or its combination, wherein the polyester resin is PET or PEN, the propylene Acid resin is polymethyl methacrylate.
5. diaphragm as claimed in claim 1 or 2, it is characterised in that further include:
One bonding coat, is formed on the protective layer;
Wherein, the bonding coat is made up of methacrylic acid copolymer;And/or the surface impedance of the bonding coat is less than 1012Ω/□。
6. diaphragm as claimed in claim 1 or 2, it is characterised in that the protective layer has a surface-treated layer;And/or should Protective layer is modified through corona discharge technology;And/or the protective layer is through being easily then chemically treated;And/or the surface resistance of the protective layer It is anti-to be less than 1011Ω/□;And/or the mist degree of the diaphragm is between 0.5% to 10%.
7. diaphragm as claimed in claim 5, it is characterised in that further include:
One release layer, covers the bonding coat.
8. the diaphragm as described in claim 1,2 or 7, it is characterised in that the thickness of the diaphragm is micro- between 12 microns to 250 Between rice.
9. a kind of Polarizer, it is characterised in that the Polarizer includes:
One light polarizing film;And
The diaphragm described in claim 1,2 or 7, is configured in the light polarizing film.
10. Polarizer as claimed in claim 9, it is characterised in that the light polarizing film includes:
One first coating;
One second coating;And
One polarizing layer, is formed between first coating and second coating.
11. Polarizers as claimed in claim 9, it is characterised in that the diaphragm to the peeling force of the light polarizing film between Between 0.02N/25mm to 0.3N/25mm;And/or the diaphragm is less than 3kV to the release band electricity of the light polarizing film.
CN201611044646.5A 2016-05-13 2016-11-24 Protective film and polarizing plate using same Active CN106896425B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW105114911 2016-05-13
TW105114911A TWI572910B (en) 2016-05-13 2016-05-13 Protection film and polarizer plate using the same

Publications (2)

Publication Number Publication Date
CN106896425A true CN106896425A (en) 2017-06-27
CN106896425B CN106896425B (en) 2018-09-04

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TW (1) TWI572910B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100426077C (en) * 2004-11-13 2008-10-15 鸿富锦精密工业(深圳)有限公司 Polaroid and producing method and apparatus thereof
CN201654266U (en) * 2009-12-16 2010-11-24 深圳市三利谱光电科技有限公司 Polaroid of thin high-contrast OLED display
TWI364438B (en) * 2004-08-09 2012-05-21 Fujifilm Corp Polymer film, and optically-compensatory film, polarizer and liquid-crystal display device comprising the same
TWI451171B (en) * 2006-08-18 2014-09-01 Fujifilm Corp Optical compensation film, polarizing plate and liquid crystal display device
TW201612273A (en) * 2012-11-20 2016-04-01 Fujimori Kogyo Co Adhesive composition, adhesive film, and surface-protective adhesive film

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI364438B (en) * 2004-08-09 2012-05-21 Fujifilm Corp Polymer film, and optically-compensatory film, polarizer and liquid-crystal display device comprising the same
CN100426077C (en) * 2004-11-13 2008-10-15 鸿富锦精密工业(深圳)有限公司 Polaroid and producing method and apparatus thereof
TWI451171B (en) * 2006-08-18 2014-09-01 Fujifilm Corp Optical compensation film, polarizing plate and liquid crystal display device
CN201654266U (en) * 2009-12-16 2010-11-24 深圳市三利谱光电科技有限公司 Polaroid of thin high-contrast OLED display
TW201612273A (en) * 2012-11-20 2016-04-01 Fujimori Kogyo Co Adhesive composition, adhesive film, and surface-protective adhesive film

Also Published As

Publication number Publication date
TWI572910B (en) 2017-03-01
CN106896425B (en) 2018-09-04
TW201809743A (en) 2018-03-16

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