CN107664789A - Polarizer and the optical display comprising this Polarizer - Google Patents
Polarizer and the optical display comprising this Polarizer Download PDFInfo
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- CN107664789A CN107664789A CN201710626800.8A CN201710626800A CN107664789A CN 107664789 A CN107664789 A CN 107664789A CN 201710626800 A CN201710626800 A CN 201710626800A CN 107664789 A CN107664789 A CN 107664789A
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- polarizer
- diaphragm
- nanometers
- ultra
- violet absorber
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/283—Interference filters designed for the ultraviolet
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00634—Production of filters
- B29D11/00644—Production of filters polarizing
-
- 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
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, 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
- G02B5/3041—Polarisers, 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention discloses a kind of Polarizer and the optical display comprising this Polarizer, and the Polarizer includes：Polarizer；And first diaphragm; it is formed at least one surface of the polarizer; wherein described first diaphragm includes monadic stretching membrane and ultra-violet absorber, and the angle between the uniaxial tension direction of the absorption axiss of wherein described polarizer and first diaphragm is between 83 ° and 97 °.First diaphragm has excellent ultraviolet relief performance and minimizes color-values deterioration.
Description
The cross reference of related application
The application advocates the korean patent application 10-2016-0097573 to be filed an application on July 29th, 2016 right,
The complete disclosure of the korean patent application is incorporated to this case for reference.
Technical field
Embodiment is related to a kind of Polarizer and the optical display comprising this Polarizer.
Background technology
In order that the display pattern visualization of liquid crystal display device, using inclined on the upper surface of liquid crystal panel and lower surface
Tabula rasa is used for the purpose in the concussion direction for controlling light.Polarizer includes polarizer and is formed at least one of the polarizer
Diaphragm on surface.Typically usable triacetyl cellulose (TAC) film is as diaphragm, but TAC film is than typical polymers film
It is expensive.Therefore, using such as polyester film (including PET (PET) film) or (methyl) acrylate films (bag
Include polymethacrylates (PMMA) film) etc. less expensive polymers film replace TAC film.
Liquid crystal in liquid crystal display device can be damaged because of ultraviolet (UV) line.Sent from the back light unit of liquid crystal display device
Ultraviolet can deform the polarizer in Polarizer.Diaphragm addition ultra-violet absorber into Polarizer can reduce ultraviolet
Line transmissivity.
In ultra-violet absorber, absorbing wavelength is 380 nanometers or the ultra-violet absorber of the light less than 380 nanometers is usual
With color, for example, it is faint yellow.If excessive ultra-violet absorber is included in diaphragm, then diaphragm can show remarkably
It is color.The color-values of Polarizer can so be increased, this may be unsuitable for applying Polarizer to liquid crystal display device.Therefore, it is necessary to
A kind of Polarizer, the Polarizer includes a small amount of ultra-violet absorber and has high absorption of UV, to improve ultraviolet
Relief performance simultaneously makes the color-values of diaphragm deteriorate minimum.
Background technology is disclosed in Korean Patent Publication case the 2011-14515th.
The content of the invention
Embodiment is related to a kind of Polarizer including diaphragm, the diaphragm have a small amount of ultraviolet (UV) light absorbers but
With high ultraviolet relief performance.
Embodiment is related to a kind of Polarizer including diaphragm, and the diaphragm has excellent ultraviolet relief performance simultaneously
Minimize color-values deterioration.
The embodiment can realize that the Polarizer includes by providing a kind of Polarizer：Polarizer；And first protect
Cuticula, it is formed at least one surface of the polarizer.First diaphragm can include monadic stretching membrane and ultraviolet
Light absorbers, and the angle between the uniaxial tension direction of the absorption axiss of the polarizer and first diaphragm can be between
Between 83 ° and 97 °.
The embodiment can realize that the liquid crystal display device is included according to reality by providing a kind of liquid crystal display device
Apply the Polarizer of example.
Diaphragm may include according to the Polarizer of embodiment, the diaphragm is with a small amount of ultra-violet absorber but with height
Ultraviolet relief performance.
Diaphragm may include according to the Polarizer of embodiment, the diaphragm has excellent ultraviolet relief performance and made
Color-values deterioration minimizes.
Brief description of the drawings
Fig. 1 illustrates the decomposition diagram of the Polarizer according to embodiment.
[explanation of symbol]
100：Polarizer
110：Polarizer
110a：The absorption axiss of polarizer
120：First diaphragm
120a：Uniaxial tension direction/tensile axis of first diaphragm
130：Second diaphragm
A：Angle
Embodiment
Exemplary embodiment is being illustrated more fully below now with reference to accompanying drawing；However, the exemplary embodiment can
It is implemented as multi-form and should not be construed as limited to embodiments described herein.Particularly, there is provided these implementations
Example is in order that present disclosure is thorough and complete, and exemplary embodiment party is fully passed on to one of skill in the art
Formula.
In the accompanying drawings, for the sake of illustrating clearly, the size in each Ceng Ji areas can be exaggerated.It should also be understood that work as a layer or member
Part referred to as " be located at " another layer or substrate " on " when, the layer or element can be directly on another layer or substrate, or
Intermediate layer also may be present.It will further be understood that when a layer referred to as " is located at " two layers " between " when, the layer can be
Only layer between described two layers, or one or more intermediate layers also may be present.Middle identical Ref. No. refers to phase in the whole text
Same element.
This specification in the whole text defined in various terms, and except the spy that provides in particular situations being such as set forth below
Beyond in the fixed context for describing or using, the meaning of any specific term will also be managed in the context of this whole file
Solution.
Term used herein such as " upper surface " and " lower surface " are defined referring to the drawings.It will be understood, therefore, that work as
When watching from different perspectives, term " upper surface " can be with term " lower surface " used interchangeably, and vice versa.
Unless specifically mentioning, otherwise " nx " specifically described herein, " ny " and " nz " is the wavelength at 550 nanometers respectively
Under refractive index in the three-dimensional system of coordinate (x-axis direction, y-axis direction and z-axis direction (thickness direction)) of film.For example, " x-axis
Direction " can be " longitudinal direction (machine direction, MD) ", and " y-axis direction " can be " laterally (transverse
Direction, TD) ".
Reference picture 1 illustrates the Polarizer according to embodiment.Fig. 1 illustrates the decomposition diagram of the Polarizer according to embodiment.
Reference picture 1, in embodiments, it may include according to the Polarizer 100 of embodiment：Polarizer 110；First diaphragm
120, it is formed on the first surface of polarizer 110 (for example, on upper surface)；And second diaphragm 130, it is formed at polarizer
On 110 second surface (for example, on lower surface).
First diaphragm 120 can be monadic stretching membrane, and the absorption axiss 110a of polarizer 110 and the first diaphragm 120
Uniaxial tension direction 120a between angle A can be between 83 ° and 97 °.Within this range, Polarizer 100 is directed to wavelength
The transmissivity of light for 380 nanometers or less than 380 nanometers substantially reduces.Even if in addition, by including a small amount of ultraviolet (UV) line
Absorbent, it can still keep the transmissivity to light of the wavelength for 380 nanometers or less than 380 nanometers so that the first diaphragm 120 is because of purple
The presence of ultraviolet absorbers and color representation can be reduced.For example, Polarizer 100 is 380 nanometers or less than 380 for wavelength
The light of nanometer can have 2% or less than 2%, such as 0% to 2%, specifically 1% or saturating less than 1%, such as 0% to 1%
Penetrate rate.
Polarizer 110 can make the light polarization transmitted through the second diaphragm 130.
Polarizer 110 may include polyvinyl alcohol mesentery, and the method to forming polarizer 110 does not limit, as long as using
Polyvinyl alcohol mesentery.For example, polarizer 110 may include modified polyvinyl alcohol film, such as the formylated poly- second in part
Polyvinyl alcohol film that enol film, acetoacetyl modify etc..Specifically, polarizer 110 can be by being contaminated with iodine or dichroism
Expect to dye polyvinyl alcohol film and then the polyvinyl alcohol film is stretched on specific direction (for example, longitudinal direction (MD)) and shape
Into.For example, polarizer 110 can be by being swelled, dyeing and stretching step is formed.The method for performing each step is art
In it is known.In such a situation, the absorption axiss 110a of polarizer 110 is substantially parallel to longitudinal direction.Term " substantial parallel "
Refer to the angle between the absorption axiss 110a of polarizer 110 and longitudinal direction between 0 ° and 7 °, this can be considered as parallel while deposit
In small error.Polarizer 110 can have 3 microns to 30 microns, specifically 10 microns to 20 microns of thickness.In this thickness
In the range of, polarizer 110 can be used in Polarizer 100.
In embodiments, the first diaphragm 120 can be formed to protect polarizer 110 on the upper surface of polarizer 110,
And extra function can be provided to Polarizer 100.
First diaphragm 120 can include ultra-violet absorber.First diaphragm 120 can be saturating from back light unit etc. by absorbing
Penetrate the ultraviolet of polarizer 110 and improve the reliability of polarizer 110.The first diaphragm 120 comprising ultra-violet absorber
Deteriorated prevented also from the display unit such as liquid crystal because of external ultraviolet radiation.It is 380 nanometers that ultra-violet absorber, which can absorb wavelength,
Or the light less than 380 nanometers, specifically 200 nanometers to 380 nanometers.Ultra-violet absorber may include that absorbing wavelength is received for 380
The absorbent of rice or light less than 380 nanometers.For example, ultra-violet absorber may include ultra-violet absorber, such as coloured
In ultra-violet absorber, including triazine, phenol, BTA, salicylic acid, Benzophenone and oxalyl amine system absorbent at least
One.In general, absorbing wavelength be 380 nanometers or the light less than 380 nanometers ultra-violet absorber have it is faint yellow and can
Color is shown to the first diaphragm 120, this can influence Polarizer.Ultra-violet absorber according to an embodiment of the invention can be big
The big transmissivity for reducing ultraviolet in Polarizer 100, and even if can still be kept using small amount to light that wavelength is 380 nanometers
Transmissivity.This can reduce coloration effects of the ultra-violet absorber to the first diaphragm 120.First diaphragm 120 can include 1 weight
Measure % or less than 1 weight %, in particular more than 0 weight % to 1 weight % or less ultra-violet absorber.In this scope
It is interior, transmission of ultraviolet rays can be reduced.
First diaphragm 120 can include optical clear resin.For example, the first diaphragm 120 can include it is following at least
One：Non-cellulose, including triacetyl cellulose etc.；Polyester, including PET, poly terephthalic acid fourth two
Ester, PEN, poly- naphthalenedicarboxylic acid fourth diester etc.；Cyclopolyolefin, including amorphous cyclic olefin polymer COP；Poly- carbon
Acid esters；Polyether sulfone；Polysulfones；Polyamide；Polyimides；Acyclic polyolefin；Polyacrylate, including polymethacrylates；It is poly-
Vinyl alcohol；Polyvinyl chloride；And polyvinylidene chloride resin.For example, the first diaphragm 120 can be polyester resin, more
Specifically polyethylene terephthalate resin, it keeps low moisture permeability and increased reliability.
First diaphragm 120 can be the film of the uniaxial tension in transverse direction (TD).Specifically, the first diaphragm 120 can
To be by extruding the resin comprising ultra-violet absorber and then carrying out uniaxial tension in the horizontal the film that is formed.If the
One diaphragm 120 be by extrude comprising ultra-violet absorber resin then in the horizontal carry out uniaxial tension and it is being formed,
And the angle between the tensile axis 120a of the absorption axiss 110a of polarizer 110 and the first diaphragm 120 (its for laterally) be 83 ° extremely
97 °, then the effect above can be had according to the Polarizer 100 of embodiment, this is confirmed by inventor.
In the first diaphragm 120, under 380 nanometers of wavelength, shown when installed in the optics for measuring transmissivity
The absorption axiss and the transverse direction of the first diaphragm 120 for the standard polarizer that degree of polarization in device (for example, V-7100) is 99.99%
Between transmissivity B (%) of angle when being 0 °, the absorption axiss when the standard polarizer that degree of polarization is 99.99% are protected with first
The ratio (B/A) of transmissivity A (%) when angle between the transverse direction of cuticula 120 is 90 ° can be 1.1 to 30, specifically 5
To 15.Within this range, the ultraviolet transmittance in the first diaphragm 120 can be reduced.
When the angle A between the absorption axiss 110a of polarizer 110 and the uniaxial tension direction 120a of the first diaphragm 120 is
At 45 °, the first diaphragm 120 can have 2% to 5%, specifically 2% to 4% transmission for the light that wavelength is 380 nanometers
Rate.When the angle A between the absorption axiss 110a of polarizer 110 and the uniaxial tension direction 120a of the first diaphragm 120 is 0 °,
First diaphragm 120 can have 5% to 10%, specifically 6% to 8% transmissivity for the light that wavelength is 380 nanometers.
In the range of this, it is possible to increase the ultraviolet transmittance in the first diaphragm 120.
First diaphragm 120 can have superelevation delay because being stretched with high stretch rate to it, hence in so that inciting somebody to action
The first diaphragm 120 can be reduced when Polarizer 100 is incorporated in liquid crystal display (liquid crystal display, LCD) device
The generation of rainbow point (rainbow spot), to prevent deterioration in image quality.For example, ripple of first diaphragm 120 at 550 nanometers
It is long lower can have 6,000 nanometers more than 6,000 nanometers, specifically 8,000 nanometers or more than 8,000 nanometers, it is more specific
Say 8,000 nanometer to 12,000 nanometers, even more particularly 10,100 nanometers to 12, postpone (Re) in 000 nanometer of face, such as
Represented by equation 1.In the scope, the first diaphragm 120 can reduce the production of rainbow point when being used in polarizer 110
It is raw.In addition, the first diaphragm 120 can suppress that light leakage occurs from side, and further reduce change of the delay according to incident angle
Change, so as to prevent the difference increase between delay.
[equation 1]
Re=(nx-ny) × d
Wherein nx and ny is the refraction on x-axis direction and y-axis direction respectively under 550 nanometers of wavelength of the first diaphragm
Rate, and d is the thickness of the first diaphragm, its unit is nanometer.
First diaphragm 120 can have 1.8 or double less than 1.8, specifically 1.0 to 1.8 under 550 nanometers of wavelength
Axle degree (NZ), is such as represented by equation 2.Within this range, the first diaphragm 120 can have control because of birefringence and caused by it is color
The effect of rainbow point.
[equation 2]
NZ=(nx-nz)/(nx-ny)
Wherein nx, ny and nz be the first diaphragm under 550 nanometers of wavelength respectively in x-axis direction, y-axis direction and z
Refractive index on direction of principal axis.
First diaphragm 120 can have under 550 nanometers of wavelength 15,000 nanometers or less than 15,000 nanometers, it is specific come
8,000 nanometer to 13,000 nanometers of face external delays (Rth) are said, are such as represented by equation 3.Within this range, the first diaphragm
120 can reduce and be produced a little because of birefringence.
[equation 3]
Rth=((nx+ny)/2-nz) × d
Wherein nx, ny and nz be the first diaphragm under 550 nanometers of wavelength respectively in x-axis direction, y-axis direction and z
Refractive index on direction of principal axis, and d is the thickness of the first diaphragm, its unit is nanometer.
First diaphragm 120 is easy to crystallize in stretching, and therefore can cause generation rainbow point when in for Polarizer,
This causes deterioration in image quality.It is 1.65 or during more than 1.65 when nx and ny both of which is less than 1.65 or nx and ny both of which, the
One diaphragm 120 can cause to produce rainbow point because of birefringence, and this is due to change of the delay according to incident angle and the wavelength of light
Change and produce.Therefore, in embodiments, in the first diaphragm 120, at least one of nx and ny are 1.65 or are more than
1.65, to reduce the generation of rainbow point.In certain embodiments, the nx of the first diaphragm 120 can be 1.65 or more than 1.65,
Such as 1.67 to 1.75, and the ny of the first diaphragm 120 is smaller than 1.65, is, for example, 1.45 to 1.60.In certain embodiments,
The ny of first diaphragm 120 can be 1.65 or more than 1.65, be, for example, 1.67 to 1.72, be more particularly 1.69 to
1.72, and the nx of the first diaphragm 120 is smaller than 1.65, is, for example, 1.45 to 1.60.When the poor absolute value between nx and ny
When (| nx-ny |) is 0.1 to 0.2, such as 0.1 to 0.18, visual angle can be further augmented while also reduce the generation of rainbow point.
In certain embodiments, the poor absolute value between nx and ny (| nx-ny |) can be 0.10,0.11,0.12,0.13,0.14,
0.15th, 0.16,0.17 or 0.18.In addition, the poor absolute value (| nx-ny |) between nx and ny can be in these numerical value
Any one is between its any the other in these numerical value.
First diaphragm 120 can be by only carrying out uniaxial tension to be prepared without longitudinal stretching in the horizontal.First
Diaphragm 120 can have 2 to 10 cross directional stretch ratio and 1 to 1.1 longitudinal stretching ratio.Term " 1 used herein
When longitudinal stretching ratio to 1.1 " refers to stretched film while transfer membrane in the vertical, it can not be kept away except the Mechanical Moving because of film
Beyond being stretched with exempting from, in the absence of the state of additional stretch technique.Specifically, term " 1 stretch rate " refers to non-stretching
State.The term " stretch rate " used in the first diaphragm 120 can refer to the length of the film after the stretch to the film
The ratio of length before stretching.
If cross directional stretch ratio is less than 2, then the first diaphragm 120 can have low latency, hence in so that the first protection
Film 120 may occur in which rainbow point when application is to liquid crystal display device, and can be torn easily because of the deterioration of the physical property of film.
On the other hand, if cross directional stretch ratio is more than 10, then the first diaphragm 120 can be broken in drawing process.For example, laterally
Stretch rate can be 3 to 8.Stretching can be performed using at least one of dry type stretching and wet tensile.Draft temperature can
Tg (glass transition temperature) based on the first diaphragm 120 and between (Tg-20) DEG C and (Tg+50) DEG C.Specifically,
Draft temperature can between 70 DEG C and 150 DEG C, more particularly between 80 DEG C and 130 DEG C, or even be more particularly situated between
Between 90 DEG C and 120 DEG C.
Methods described can further comprise the thermostabilization of the first diaphragm 120 for making drawn.Carried out with high stretch rate
First diaphragm 120 of stretching, which often has, causes the film to restore to the recuperability of its original state.Thermostabilization step can
The stress to the recuperability of the first diaphragm 120 is controlled, so as to keep the thermostabilization of film.Thermostabilization step may include inciting somebody to action
Two transverse ends of the first diaphragm 120 are fixed and protected while moving the first diaphragm 120 in the vertical to the first of drawn
Cuticula 120 is heated.Herein, the first diaphragm is stretched with the stretch rate more relatively low than above-mentioned stretching step in the horizontal
120.Cross directional stretch ratio may be greater than 0 to 3 or smaller, specifically 0.1 to 2, more particularly 0.1 to 1.It can perform
The first diaphragm 120 is fixed in transverse direction to being enough to prevent the film from restoring because of high stretch rate just, and in the first diaphragm
Substantive cross directional stretch effect (tensioning-relaxation) may be not present on 120.Heating in thermostabilization step can be at 100 DEG C extremely
Carried out 1 second to 2 hours at 300 DEG C.
First diaphragm 120 can have 50 microns to 300 microns, specifically 50 microns to 200 microns of thickness.
In this thickness range of one diaphragm 120, the first diaphragm 120 can be applied to Polarizer 100.
Although being not shown in Fig. 1, the first diaphragm 120 may include the functional coating (example being formed thereon
Such as, hard conating, anti-reflecting layer or anti-finger print layer), to assign Polarizer 100 extra function.Functional layer can have 1 micron extremely
10 microns of thickness.In this thickness range of functional layer, the first diaphragm 120 is stackable on polarizer 110 and using extremely
Polarizer 100.
In addition, although not shown in Fig. 1, but the first diaphragm 120 can further comprise surface on its lower surface
Coating.When the first diaphragm 120 is polyester film, it can have a hydrophobic surface, and polyethylene terephthalate film as
Higher hydrophobicity can be shown during diaphragm.In order to use such a film in Polarizer 100, it may be necessary to which the film is carried out
Surfaction by hydrophobic surface to be changed into water-wetted surface.Carrying out surfaction using sodium hydroxide, (this is used for typical fibers element
In mesentery) insufficient modification can be provided, or the surface of the film can be damaged.Therefore, bag can be formed on the first diaphragm 120
Face coat containing the priming agent (primer) with both hydrophobic functional group and hydrophilic functional group.There is hydrophobic function simultaneously
The priming agent of both base and hydrophilic functional group may include polyester resin, polyvinyl acetate resins, and combinations thereof, but be not limited only to
This.Face coat can improve the engineering properties of the first diaphragm 120, and help to reduce the moisture infiltration of the first diaphragm 120
Property, so that Polarizer 100 can show the height endurability to some external conditions.In addition, face coat can be formed at
Between first diaphragm 120 and Polarizer 100, to improve the cohesive between the first diaphragm 120 and polarizer 110.
Second diaphragm 130 can be formed on the lower surface of polarizer 110, to assign mechanical strength simultaneously to Polarizer 100
Protect polarizer 110.
Second diaphragm 130 can be formed on a surface of liquid crystal display panel, and can be had within the specified range
Length of delay is to compensate visual angle.For example, the second diaphragm 130 can have 40 nanometers to 60 nanometers of face under 550 nanometers of wavelength
Interior delay (Re).In this face in delayed scope, the second diaphragm 130 can provide improved picture quality.In some embodiments
In, the second diaphragm 130 can have 25 microns to 500 microns, more particularly 25 microns to 50 microns of thickness.In this thickness
In the range of, the second diaphragm 130 can be used in Polarizer 100.
Second diaphragm 130 can include polyester film (comprising PET, poly terephthalic acid fourth two
Ester, PEN, poly- naphthalenedicarboxylic acid fourth diester etc.) or non-polyester film transparent optical film.Non- polyester film can include
At least one of below：It is cellulose (including triacetyl cellulose etc.), cyclopolyolefin, makrolon, polyether sulfone, polysulfones, poly-
Acid amides, polyimides, polyolefin, polyacrylate, polyvinyl alcohol, polyvinyl chloride, and/or polyvinylidene chloride resin.
Polarizer 100 can have 25 microns to 500 microns of thickness.Within this range, Polarizer 100 can be used for liquid crystal
Show in device.Polarizer 100 can have 99.99% or the degree of polarization more than 99.99%, such as 99.99% to 99.999% and
40% or the transmissivity more than 40%, such as 40% to 80% (for example, being measured under visible spectrum (for example, 550 nanometers)).
In the range of these, Polarizer 100 does not show the deterioration of optical property when being installed on liquid crystal display.
Although, can be between the diaphragm 120 of polarizer 110 and first and polarizer 110 and not shown in Fig. 1
Binder course is formed between two diaphragms 130.Binder course can include any appropriate adhesive, such as aqueous adhesive, pressure-sensitive viscous
At least one of mixture, and/or Photocurable adhesive.In addition, although not shown in Fig. 1, but in the second diaphragm 130
Adhesive phase can be further formed on lower surface so that Polarizer 100 is stacked on liquid crystal display panel.For example, adhesive phase can
Comprising contact adhesive, but it is not limited only to this.
Optical display according to an embodiment of the invention may include the liquid crystal display device for including above-mentioned Polarizer.Institute
Stating liquid crystal display device may include：Liquid crystal display panel, the first Polarizer being arranged on the upper surface of liquid crystal display panel, set
The back light unit that is placed on the lower surface of liquid crystal display panel and be arranged at the lower surface of the liquid crystal display panel with it is described
The second Polarizer between back light unit.First Polarizer may include Polarizer according to an embodiment of the invention.
Liquid crystal display panel may include that with lower panel the panel includes being embedded between the first substrate and the second substrate
Liquid crystal cell layer.In certain embodiments, the first substrate can be colour filter (color filter, CF) substrate (upper substrate),
And second substrate can be thin film transistor (TFT) (thin film transistor, TFT) substrate (lower substrate).First substrate and
Two substrates can be formed by identical or different material, and can be such as glass substrate or plastic supporting base.Plastic supporting base can be by can
Formed using for example following any plastic material to flexible display：PET (PET), makrolon
(PC), polyimides (PI), PEN (PEN), polyether sulfone (PES), polyacrylate (PAR) and cycloolefin
Copolymer (COC), but it is not limited only to this.Liquid crystal cell layer may include with vertical orientation (vertical alignment, VA)
Pattern, it is coplanar conversion (in-plane switching, IPS) pattern, fringing field conversion (fringe field switching,
FFS) pattern or the liquid crystal of twisted-nematic (twisted nematic, TN) pattern arrangement.
Second Polarizer may include the Polarizer commonly used in art.
May be used at well-known back light unit in field of liquid crystal, and back light unit may include light source component,
Light guide plate, reflecting plate, diffuser plate etc..
Next, the present invention will be explained in more detail with reference to some examples.However, it should be understood that provide these examples only
For illustration purposes, and it is not necessarily to be construed as limiting the invention in any way.Following instance and comparative example are provided to protrude
The characteristic of one or more embodiments, it should be appreciated that example and comparative example should be neither construed to limit the scope of embodiment,
Comparative example should not be construed to beyond the scope of embodiment.Furthermore, it is to be understood that the embodiment be not limited in example and
Detail described in comparative example.
Example 1
Polarizer is prepared in the following manner：By polyvinyl alcohol film VF-PS6000 (Kuraray Co., Ltds at 60 DEG C
(Kuraray Co., Ltd.s), thickness：60 microns) be stretched to for 3 stretch rate, then adsorb iodine and at 40 DEG C
2.5 stretch rate is stretched in boric acid aqueous solution.
While using roller mechanical transfer film in the vertical, make PET (PET) resin and bag
CGX UVA 006 (BASF AG (BASF Corporation)) are included as the composition of ultra-violet absorber (at described group
The ultra-violet absorber for including 1 weight % in compound) it is subjected to melting extrusion and is only stretched in the horizontal with the drawing for 6
Ratio (without longitudinal stretching) is stretched, then carries out being tensioned-relaxing at 100 DEG C, so as to prepare PET
(PET) film 1.
The thickness of PET film 1 is 80 microns.In the PET film 1 as the first diaphragm, the Re of equation 1 is 8,000 to receive
Rice, the NZ of equation 2 is 1.6, and the Rth of equation 3 is 9,600 nanometers.Re, NZ and Rth are sharp under 550 nanometers of wavelength
Bear (Axoscan) (Axometrics Inc. (Axometrics, Inc.)) with delay measuring device Acker Suo Si to carry out
Measurement.
The detailed nature of PET film 1 is illustrated in table 1.
When being measured by CM-3600D (Konica Minolta company (Konica Minolta, Inc.)), use
PET film 1 has the color-values yellow colour index (Yellow Index, YI) for 1.8 during D1925 light sources, and when using D65 light sources
A* is that -0.1 and b* is 0.9.PET film 1 is inserted into ultraviolet-visible spectrometer (UV-VIS spectrometer) V-7100 (days
This light splitting company (Jasco Incorporated)) in.As shown in table 1, change and be installed on ultraviolet-visible spectrometer V-
Degree of polarization in 7100 is the angle B (°) between 99.99% absorption axiss of standard polarizer and the transverse direction of PET film 1.Measurement
It is transmissivity under 380 nanometers to 800 nanometers of wavelength, saturating under 380 nanometers of wavelength when measuring in the vertical
Transmissivity when penetrating rate and measuring in the horizontal under 380 nanometers of wavelength.The ripple at 380 nanometers is measured since then
Transmissivity under long.When measuring transmissivity, color-values " as " and " bs " also are obtained from ultraviolet-visible spectrometer V-7100,
And result is illustrated in table 1.
By tri acetyl cellulose membrane KC4DR-1 (Konica Co., Ltd (Konica Co., Ltd.s), thickness：40 microns)
The first surface of polarizer made above is bound to, and utilizes adhesive Z-200 (Japanese Synesis Company (Nippon
Goshei)) PET film 1 with the angle A (°) shown in table 2 is bound to the second surface of polarizer, to prepare Polarizer.Angle
Degree A is defined as the angle between the absorption axiss of polarizer and the uniaxial tension direction (transverse direction) of PET film 1.
Example 2
In addition to angle A (°) is changed as shown in table 2, the Polarizer of example 2 is prepared in a manner of with the identical of example 1.
Example 3
In addition to angle A (°) is changed as shown in table 2, the Polarizer of example 3 is prepared in a manner of with the identical of example 1.
Comparative example 1 and comparative example 2
In addition to angle A (°) is changed as shown in table 2, by be prepared in a manner of the identical of example 1 comparative example 1 and compared with
The Polarizer of example 2.
Comparative example 3
Except use TAC film KC4DR-1 (Konica Co., Ltd, thickness：40 microns, comprising triazine as ultraviolet radiation absorption
Agent, 1 weight % ultra-violet absorber, non-stretching film are included in the composition of TAC film) replace PET film 1 beyond, with reality
The identical mode of example 1 is prepared for the Polarizer of comparative example 3.Because TAC film need not stretch, therefore angle A (°) is uncertain.
The property of TAC film is measured in a manner of with the identical of example 1, and result is illustrated in table 1.
Comparative example 4
Make PET (PET) resin of example 1 and (vapour bar is special comprising ground slave refined (Tinuvin) 326
With chemical company (Ciba Specialty Chemicals, Inc.)) as ultra-violet absorber composition (at described group
The ultra-violet absorber for including 1 weight % in compound) be subjected to melting extrusion, and by its it is biaxial stretch-formed to having in the vertical be 3
Stretch rate and there is the stretch rate for 3 in the horizontal, it is (thick so as to be prepared for PET (PET) film 2
Degree：40 microns).
In addition to PET film 1 is replaced using PET film 2, the Polarizer of comparative example 4 is prepared in a manner of with the identical of example 1.
It is biaxial stretch-formed due to having been carried out to PET film 2, therefore can not fixed angle A (°).
The property of PET film 2 is measured in a manner of with the identical of example 1, and result is illustrated in table 1.
Table 1
The physical property of each polarizer prepared in example 1 to example 3 and comparative example 1 into comparative example 4 is have evaluated,
And result is illustrated in table 2.
* optical property and color-values：Using ultraviolet-visible spectrometer V-7100 (Japanese light splitting company) by wavelength be 380
The light or wavelength of nanometer are that 380 nanometers of light to rice in 800 is irradiated in example 1 to example 3 and comparative example 1 to comparative example 4
Each polarizer of middle preparation, to cause light to be transmitted through the first diaphragm from the second diaphragm.
Table 2
As shown in table 2, the polarizer even from embodiments of the invention includes a small amount of ultra-violet absorber, described inclined
Light device still has high ultraviolet relief performance.
Have been disclosed exemplary embodiment herein, and although using specific term, but these specific terms should be used
And it is construed to that only there is general and illustrative meaning not for limitation purpose.In some cases, such as Shen is proposed in the application
It please will be evident for the those of ordinary skill in art, unless specifically stated otherwise, otherwise combine specific before
Feature, characteristic, and/or the element that embodiment is illustrated can be used alone or the feature with being illustrated with reference to other embodiment, spy
Property, and/or element are applied in combination.Therefore, one of skill in the art should be understood that without departing substantially from such as in above claim
Described in spirit and scope of the present invention under conditions of, the various changes in form and details can be made to it.
Claims (11)
- A kind of 1. Polarizer, it is characterised in that including：Polarizer；AndFirst diaphragm, it is formed at least one surface of the polarizer,Wherein described first diaphragm includes monadic stretching membrane and ultra-violet absorber, and the absorption axiss of wherein described polarizer Angle between the uniaxial tension direction of first diaphragm is between 83 ° and 97 °.
- 2. Polarizer according to claim 1, it is characterised in that the ultra-violet absorber absorbing wavelength is 380 nanometers Or the light less than 380 nanometers.
- 3. Polarizer according to claim 1, it is characterised in that the ultra-violet absorber include it is following at least one Person：Triazine, phenol, BTA, salicylic acid, Benzophenone and oxalyl amine system absorbent.
- 4. Polarizer according to claim 1, it is characterised in that the ultra-violet absorber is with 1 weight % or less than 1 weight Amount % amount is present in first diaphragm.
- 5. Polarizer according to claim 1, it is characterised in that first diaphragm includes resin film, the resin Film includes the ultra-violet absorber and in the horizontal by uniaxial tension.
- 6. Polarizer according to claim 1, it is characterised in that in first diaphragm, in 380 nanometers of wavelength Under, when angle of the degree of polarization between 99.99% absorption axiss of standard polarizer and the transverse direction of first diaphragm is 0 ° When transmissivity B to when degree of polarization be 99.99% the absorption axiss of standard polarizer and the transverse direction of first diaphragm between Transmissivity A of angle when being 90 ° ratio be 1.1 to 30.
- 7. Polarizer according to claim 1, it is characterised in that when the absorption axiss and described first of the polarizer When angle between the uniaxial tension direction of diaphragm is 45 °, first diaphragm is 380 nanometers or small for wavelength There is 2% to 5% transmissivity in 380 nanometers of light.
- 8. Polarizer according to claim 1, it is characterised in that when the absorption axiss and described first of the polarizer When angle between the uniaxial tension direction of diaphragm is 0 °, first diaphragm is 380 nanometers or small for wavelength There is 5% to 10% transmissivity in 380 nanometers of light.
- 9. Polarizer according to claim 1, it is characterised in that first diaphragm includes non-cellulose mesentery.
- 10. Polarizer according to claim 1, it is characterised in that first diaphragm is formed at the polarizer On one surface, and the second diaphragm is formed on another surface of the polarizer.
- 11. a kind of optical display, it is characterised in that including according to any described Polarizer in claim 1 to 10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2016-0097573 | 2016-07-29 | ||
| KR1020160097573A KR101955763B1 (en) | 2016-07-29 | 2016-07-29 | Polarizing plate and optical display apparatus comprising the same |
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| CN107664789A true CN107664789A (en) | 2018-02-06 |
| CN107664789B CN107664789B (en) | 2020-09-22 |
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| KR (1) | KR101955763B1 (en) |
| CN (1) | CN107664789B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111656231A (en) * | 2018-03-28 | 2020-09-11 | 株式会社Lg化学 | Polarizing plate and display device |
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| CN112041736A (en) * | 2018-06-06 | 2020-12-04 | 日东电工株式会社 | Liquid crystal display device having a plurality of pixel electrodes |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959459A (en) * | 2010-06-22 | 2013-03-06 | 东洋纺株式会社 | Liquid crystal display device, polarizing plate and polarizer protective film |
| CN103033984A (en) * | 2011-09-30 | 2013-04-10 | 大日本印刷株式会社 | Liquid crystal display device and polarizer protective film |
| CN104007487A (en) * | 2013-02-25 | 2014-08-27 | 富士胶片株式会社 | Laminate, polarizing plate, liquid crystal display device, and method of manufacturing polarizing plate |
| CN105229501A (en) * | 2013-05-14 | 2016-01-06 | 东洋纺株式会社 | Liquid crystal indicator, Polarizer and polaroid protective film |
| CN105733028A (en) * | 2014-12-26 | 2016-07-06 | 富士胶片株式会社 | Composition for polarizing plate, polarizing plate protective film, cellulose acylate film, polarizer, polarizing plate, and display |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003040772A2 (en) * | 2001-11-07 | 2003-05-15 | Fuji Photo Film Co., Ltd. | Polarizing plate, production method thereof and liquid crystal display using the same |
| JP2003195043A (en) | 2001-12-26 | 2003-07-09 | Fuji Photo Film Co Ltd | Polarizing plate with hard coat layer, method for manufacturing the same and liquid crystal display device |
| JP2003207620A (en) * | 2002-01-10 | 2003-07-25 | Fuji Photo Film Co Ltd | Polarizing plate, method for manufacturing the same and liquid crystal display device |
| JP2003207628A (en) | 2002-01-10 | 2003-07-25 | Fuji Photo Film Co Ltd | Polarizing plate, method for manufacturing the same and liquid crystal display device |
| KR101768270B1 (en) * | 2014-07-21 | 2017-08-16 | 삼성에스디아이 주식회사 | Polarizing plate and liquid crystal display apparatus comprising the same |
-
2016
- 2016-07-29 KR KR1020160097573A patent/KR101955763B1/en active IP Right Grant
-
2017
- 2017-07-12 TW TW106123266A patent/TWI675871B/en active
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959459A (en) * | 2010-06-22 | 2013-03-06 | 东洋纺株式会社 | Liquid crystal display device, polarizing plate and polarizer protective film |
| CN103033984A (en) * | 2011-09-30 | 2013-04-10 | 大日本印刷株式会社 | Liquid crystal display device and polarizer protective film |
| CN104007487A (en) * | 2013-02-25 | 2014-08-27 | 富士胶片株式会社 | Laminate, polarizing plate, liquid crystal display device, and method of manufacturing polarizing plate |
| CN105229501A (en) * | 2013-05-14 | 2016-01-06 | 东洋纺株式会社 | Liquid crystal indicator, Polarizer and polaroid protective film |
| CN105733028A (en) * | 2014-12-26 | 2016-07-06 | 富士胶片株式会社 | Composition for polarizing plate, polarizing plate protective film, cellulose acylate film, polarizer, polarizing plate, and display |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111656231A (en) * | 2018-03-28 | 2020-09-11 | 株式会社Lg化学 | Polarizing plate and display device |
| CN111656231B (en) * | 2018-03-28 | 2022-04-19 | 株式会社Lg化学 | Polarizing plate and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101955763B1 (en) | 2019-03-07 |
| TW201803923A (en) | 2018-02-01 |
| TWI675871B (en) | 2019-11-01 |
| CN107664789B (en) | 2020-09-22 |
| KR20180013621A (en) | 2018-02-07 |
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