CN107102389A - Polarization plates and image display device - Google Patents
Polarization plates and image display device Download PDFInfo
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- CN107102389A CN107102389A CN201710082514.XA CN201710082514A CN107102389A CN 107102389 A CN107102389 A CN 107102389A CN 201710082514 A CN201710082514 A CN 201710082514A CN 107102389 A CN107102389 A CN 107102389A
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- polarization plates
- diaphragm
- hole
- polarization
- polarizer
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- 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
-
- 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
- G02B5/305—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 including organic materials, e.g. polymeric layers
-
- 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
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/22—Gases
- H01S3/223—Gases the active gas being polyatomic, i.e. containing two or more atoms
- H01S3/225—Gases the active gas being polyatomic, i.e. containing two or more atoms comprising an excimer or exciplex
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention, which is provided, can suppress the polarization plates and image display device of light leakage.Polarization plates (1) possess membranaceous polarizer (7) and are overlapped in multiple optical films (3,5,9,11,13) of polarizer (7).Verticality (a/b) through the hole (21) of polarization plates (7) is 0.00 less than 0.32.The width (W) in the polarization elimination portion (23) around hole (21) is 0.00 μm less than 32 μm.
Description
Technical field
The present invention relates to polarization plates and image display device.
Background technology
Polarization plates be constitute the image display device such as LCD TV, organic EL TVs or smart mobile phone optical component it
One.As shown in following patent documents 1, polarization plates possess membranaceous polarizer and (for example protected with the optical film for being overlapped in polarizer
Film).
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2002-303730 publications
The common image display device such as TV or smart mobile phone has the picture of quadrangle form mostly, therefore is equipped on
The conventional polarization plates of image display device are also quadrangle, and it is overall as one man with polarization property.On the other hand, it is special
Image display device has specific shape according to their purposes, and the conventional polarization plates for being equipped on the device are also special shape
Shape.For example, the rotary shaft for pointer must be being formed used in intelligent watch or onboard instruments on image display device sometimes
The hole run through.Accordingly, it would be desirable to also form through hole in the polarization plates for be equipped on image display device.Due to the use of polarization plates
On the way, purpose is diversified, therefore can imagine the various of through hole must be formed in polarization plates according to purposes, purpose
Situation.
However, in the punch process (punch press process) by using drift and punch die progress or using drill bit progress
The conventional mechanical means such as machining comes in the case of forming through hole in polarization plates, there is through hole and tilts, in insertion
The situation for being formed about cracking in hole.The inclination and cracking of through hole can damage the polarization property of the vicinity of through hole, and draw
Play light leakage." light leakage " refers to that the direction of vibration light parallel with the absorption axiss of polarizer passes through the phenomenon of polarization plates.
In replacement mechanical means as described above by using CO2The Laser Processing (such as hot-working) of the progress such as laser
Come in the case of forming through hole in polarization plates, tilted there is also through hole, in the situation for being formed about cracking of through hole.
Moreover, according to Laser Processing, then the part for forming through hole is heated by laser, therefore polarization property is easily because of the change of polarizer
The property learned rotten and be compromised.The discoloration or melting of the rotten e.g. polarizer chemically of polarizer.Hereinafter, work(will be polarized
It can be referred to as because of the part gone bad and be damaged chemically of polarizer in " the polarization elimination portion " of polarization plates.Polarize elimination portion wider,
The then easier leak light in image display device.It can be seen from the result of study of the present inventors：Even in using wavelength ratio
CO2In the case of the processing (such as ablation) that the short PRK of laser is carried out, it is also possible to occur and through hole
Form associated above-mentioned technical problem.
The content of the invention
The present invention makes in view of the foregoing, its object is to provide can suppress light leakage polarization plates and
Image display device including the polarization plates.
Scheme for solving problem
The polarization plates of one aspect of the present invention possess membranaceous polarizer and are overlapped in multiple optical films of polarizer, pass through
Wear polarization plates hole verticality for 0.00 less than 0.32, the width in the polarization elimination portion around hole for 0.00 μm with
Above and less than 32 μm." optical film " refers to the membranaceous component for constituting polarization plates (in addition to polarizer itself).For example, optics
Film contains the meaning of diaphragm and mold release film.
Can be that the quantity of the cracking around hole is more than 0 and less than 3 in per unit length 1mm.
Can be that the length of the cracking around hole is for 0 μm less than 50 μm.
Can be that the optical film of at least one party in a pair of optical films for clip polarizer includes triacetyl cellulose.
Can be that the optical film of at least one party in a pair of optical films for clip polarizer includes cyclic olefin polymer.
Can be that the optical film of at least one party in a pair of optical films for clip polarizer includes poly-methyl methacrylate
Ester.
The image display device of one aspect of the present invention includes above-mentioned polarization plates.
Invention effect
According to the present invention, there is provided the polarization plates and image display device including the polarization plates that can suppress light leakage.
Brief description of the drawings
Fig. 1 is the stereogram of the polarization plates of one embodiment of the present invention.
Fig. 2 be the polarization plates in the II-II lines direction in Fig. 1 to regarding face (polarization plates it is vertical with the surface of polarization plates
Section) schematic diagram.
Fig. 3 is the enlarged drawing of the region III (around the hole for running through polarization plates) in the surface of the polarization plates in Fig. 1.
Fig. 4 is the schematic diagram and the straight line along the center of the luminous point through PRK of the luminous point of PRK
PRK intensity distribution.
Fig. 5 is the schematic diagram in the section of the image display device (liquid crystal display device) of one embodiment of the present invention.
The schematic side elevation of the configuration of polarization plates when (a) in Fig. 6 is the light leakage for representing to check polarization plates, Fig. 6
In (b) be the configuration shown in (a) in Fig. 6 schematic plan.
Description of reference numerals：
1st, 1a, 1b, 1s ... polarization plates, 3 ... the 3rd diaphragms, 5 ... first diaphragms, 7 ... polarizers, 9 ... second protections
Film, 10 ... liquid crystal cells, 11 ... adhesive layers, 13 ... mold release films, 20 ... liquid crystal panels, 21 ... through holes, 23 ... polarization elimination portions,
25 ... crackings, the width in 30 ... liquid crystal display devices (image display device), W ... polarization elimination portion, the length of 1 ... cracking.
Embodiment
Hereinafter, it is explained with reference to the present invention preferred embodiment.In the accompanying drawings, to identical inscape mark
Note identical reference.The present invention is not limited to following embodiments.X, Y and Z shown in each figure refer to orthogonal
Three reference axis.Direction shown in each reference axis is common in all figures.
As shown in figure 1, the polarization plates 1 of present embodiment possess membranaceous polarizer 7 and are overlapped in multiple light of polarizer 7
Learn film (3,5,9,13).Polarizer 7 and multiple optical films (3,5,9,13) are quadrangles.Multiple optical films (3,5,9,13)
Refer to the first diaphragm 5, the second diaphragm 9, the 3rd diaphragm 3 and mold release film 13 (separator).That is, polarization plates 1 possess partially
Shake piece 7, the first diaphragm 5, the second diaphragm 9, the 3rd diaphragm 3 and mold release film 13.Polarization plates 1 also possess protects positioned at second
Adhesive layer 11 between cuticula 9 and mold release film 13.The first diaphragm 5 is overlapped with the surface of a side of polarizer 7, in polarizer
The surface of 7 the opposing party overlaps with the second diaphragm 9.The 3rd diaphragm 3 is overlapped with the first diaphragm 5.That is, the first diaphragm
5 are located between the diaphragm 3 of polarizer 7 and the 3rd.Mold release film 13 is overlapped in the second diaphragm 9 across adhesive layer 11.In other words,
Second diaphragm 9 is located between polarizer 7 and adhesive layer 11.
The surface (first surface) of one side of polarization plates 1 is made up of the 3rd diaphragm 3.The surface of the opposing party of polarization plates 1
(second surface) is made up of mold release film 13.The sections of polarization plates 1 shown in Fig. 2 and polarizer 7 and each optical film (3,5,9,
13) it is vertical.In other words, the section of the polarization plates 1 shown in Fig. 2 is vertical with Y-axis, parallel with ZX faces.In other words, it is inclined shown in Fig. 2
The section of vibration plate 1 is vertical with the smooth surface of polarization plates 1.
The hole (through hole 21) of polarization plates 1 is formed through in polarization plates 1.(XY is put down on the surface of through hole 21 and polarization plates 1
Face) it is substantially vertical, the stacked direction (Z-direction) with polarizer 7 and multiple optical films (3,5,9,13) is almost parallel.With it is inclined
The shape of through hole 21 on the parallel direction (X/Y plane direction) in the surface of vibration plate 1 is for example circular as shown in Figure 3.Through hole
21 inwall can also be unsmooth.
The verticality of through hole 21 is 0.00 less than 0.32.Hereinafter, verticality is illustrated based on Fig. 2.
The section of polarization plates 1 shown in Fig. 2 is vertical with the surface of polarization plates 1 and includes the center of circular through hole 21
Axle.By positioned at the surface (first surface) of a side of polarization plates 1 and first optical film suitable with the edge of through hole 21 (for example
3rd diaphragm 3) end be defined as first end 3e.By positioned at the surface of the opposing party of polarization plates 1 (second surface) and with
The end of suitable the second optical film (such as mold release film 13) in the edge of through hole 21 is defined as the second end 13e.First end
3e and the second end 13e are respectively positioned on the same section vertical with the surface of polarization plates 1.Will be parallel with the surface of polarization plates 1
Direction (X/Y plane direction) on, first end 3e and the second end 13e distance definition be a.By the thickness of polarization plates 1
(average value of such as thickness) is defined as b.Verticality is defined as a/b.Verticality can also be defined as a '/b.A ' be with partially
On the parallel direction in the surface of vibration plate 1, first end 3e ' and the second end 13e ' distance.First end 3e ' refers to be located at
Another first end of above-mentioned first end 3e opposite side.The second end 13e ' refers to be located at above-mentioned the second end 13e
Opposite side another the second end.A/b can be equal with a '/b.A/b can also be different from a '/b.In a/b and a '/b is different
In the case of, a/b and a '/b are 0.00 less than 0.32.As long as meeting above-mentioned definition, so that it may in polarization plates 1
A and b is determined in arbitrary section, and a/b is calculated according to the respective measured values of a and b.In the arbitrary multiple of polarization plates 1
In the case of calculating verticality a/b in section, maximum in the multiple verticality a/b calculated for 0.00 less than
0.32.A, a ', b and b ' determined i.e. for example based on the observation carried out using light microscope to the section of polarization plates 1
Can.
By making the verticality a/b of through hole 21 be less than 0.32, so that light leakage is inhibited.In the vertical of through hole 21
In the case that degree a/b is more than 0.32, on the section (end face) of the polarizer 7 exposed in through hole 21, because of refraction of light etc.
Caused light leakage becomes notable.The verticality a/b of through hole 21 can be more than 0.00 and less than 0.30, more than 0.00 and
Less than 0.28, more than 0.00 and less than 0.27, more than 0.05 and less than 0.30, more than 0.05 and less than 0.28 or more than 0.05
And less than 0.27.Verticality a/b is smaller, then easier suppression light leakage.Therefore, most preferably a is zero.That is, most preferably verticality
A/b is zero.Verticality a/b is zero to mean the surface (first surface and second surface) of through hole 21 and polarization plates 1 completely
Ground is vertical.
The thickness b of polarization plates 1 for example can be more than 10 μm and less than 1200 μm, more than 10 μm and less than 500 μm, 10 μm
Above and less than 300 μm or more than 10 μm and less than 200 μm.First end and the second end apart from a or a ' as long as meeting a/
B is 0.00 less than 0.32, it is possible to be arbitrary value.
In the case of being a pair of concentric circles in the opening portion at the two ends of through hole 21, verticality can also be defined as it is following that
Sample.The internal diameter (diameter) of one end (opening portion) of through hole 21 is defined as d1.By the other end (opening portion) of through hole 21
Internal diameter (diameter) is defined as d2.Now, the verticality of through hole 21 can be defined as (d1-d2)/2b absolute value.This definition with
Above-mentioned definition (a/b) not contradiction.That is, the absolute value of (d1-d2)/2 is equal with a or a '.D1 and d2 are for example based on using light
Microscope is learned to the observation of two surfaces progress of polarization plates 1 to determine.
It is formed with polarization elimination portion 23 sometimes around through hole 21.Polarize formation of the elimination portion 23 in through hole 21
Produced in journey because of chemically rotten of polarizer 7 or the optical film (3,5,9,13) for being overlapped in polarizer 7.Polarize elimination portion
23 can form along first surface (such as the surface of the 3rd diaphragm 3).Polarizing elimination portion 23 can also be along in the
Formed the second surface (such as surface of mold release film 13) of the dorsal part on one surface.Polarize elimination portion 23 can with polarization plates 1
The vertical direction (Z-direction) in surface on located continuously or discontinuously exist.That is, polarization elimination portion 23 can have from polarization
The depth that the surface of plate 1 is risen.In other words, polarization elimination portion 23 can dimensionally be distributed.For example, polarization elimination portion 23 can be bag
Enclose the part of the overall tubular of through hole 21.Polarization elimination portion 23 is a factor of light leakage.Polarize the light in elimination portion 23
Leak the change due to polarizer 7 or the chemical composition for the optical film (3,5,9,13) for being overlapped in polarizer 7.For example, because of structure
Cause polarization elimination portion 23 into the confusion of the orientation of the polyvinyl alcohol or pigment molecular (compound for including iodine) of polarizer 7
Light leakage.
The width W in the polarization elimination portion 23 around the through hole 21 of polarization plates 1 is for 0.00 μm less than 32 μm.Such as
Shown in Fig. 3, the width W in polarization elimination portion 23 refers to the width in the polarization elimination portion 23 on the direction parallel with the surface of polarization plates 1
Degree.Here, " surfaces of polarization plates 1 " can be first surface (such as the surface of the 3rd diaphragm 3) or in first
The second surface (such as surface of mold release film 13) of the dorsal part on surface.Can be, in the side vertical with the first surface of polarization plates 1
What is looked up polarizes the width W in elimination portion 23 for 0.00 μm less than 32 μm, and in the second surface with polarization plates 1
The width W in the polarization elimination portion 23 observed on vertical direction is for 0.00 μm less than 32 μm.Polarize elimination portion 23
Width W can also rename as making the width in the polarization elimination portion 23 on X/Y plane direction.Polarization plates 1 are substantially transparent, therefore can be from
First surface side (face side of the 3rd diaphragm 3) observation is eliminated positioned at the polarization of second surface side (face side of mold release film 13)
Portion 23.That is, the polarization elimination portion 23 observed in first surface side (face side of the 3rd diaphragm 3) may not be formed at the first light
Learn film (the 3rd diaphragm 3).Alternatively, it is also possible to the inside from the first surface side or second surface side positioned at polarization plates 1
Polarize elimination portion 23.First surface side (the 3rd diaphragm 3 can be located at from second surface side (face side of mold release film 13)
Face side) polarization elimination portion 23.That is, the polarization elimination portion 23 observed in second surface side (face side of mold release film 13)
The second optical film (mold release film 13) may not be formed at.Polarization plates 1 are substantially transparent, therefore in the side vertical with the surface of polarization plates 1
When the surface of polarization plates 1 is observed on to (Z-direction), the polarization elimination portion 23 of distributed in three dimensions can be seen with the state of coincidence
Arrive.That is, the polarization elimination portion 23 of distributed in three dimensions can be on the surface (X/Y plane) as polarization plates 1 around the through hole 21
The orthographic projection ring of through hole 21 (such as surround) of two dimension and be observed.
It is less than 32 μm by the width W for polarizing elimination portion 23, so that light leakage is inhibited.Width in polarization elimination portion 23
W is spent in the case of more than 32 μm, the light leakage in polarization elimination portion 23 becomes notable.The width in the polarization elimination portion 23 of polarization plates 1
It can be more than 0.00 μm and less than 20 μm, more than 0.00 μm and less than 19 μm or more than 0.00 μm and less than 18 μm to spend W.Partially
Shake elimination portion 23 width W it is smaller, then it is easier suppression light leakage.Therefore, the width W in most preferably polarization elimination portion 23 is 0.00
μm.That is, most preferably in the absence of polarization elimination portion 23.As long as the width W in the polarization elimination portion 23 around through hole 21 is in
0.00 μm less than in the range of 32 μm, then can not also fix.The unfixed situations of width W in polarization elimination portion 23
Under, the width W in polarization elimination portion 23 maximum is less than 32 μm.
It is formed with cracking 25 sometimes around through hole 21.Cracking 25 can along first surface (the 3rd diaphragm 3
Surface) formed.Cracking 25 can also along the dorsal part in first surface second surface (surface of mold release film 13) landform
Into.Cracking 25 can continuously or non-continuously be formed on the direction (Z-direction) vertical with the surface of polarization plates 1.That is, it is cracked
25 can have the depth from the surface of polarization plates 1.In other words, cracking 25 can be distributed in three dimensions.
The quantity of cracking 25 around the through hole 21 of polarization plates 1 can per unit length 1mm be more than 0 and 3 with
Under." unit length 1mm " refers to the straight line or curve that and length parallel with the edge of through hole 21 is 1mm.For example, in through hole
21 be shaped as circle in the case of, unit length refers to the parallel circular arc in the circular edge with through hole 21." the number of cracking 25
Amount " refer on the direction (Z-direction) vertical with the surface of polarization plates 1 observe cracking 25 in unit length 1mm phases
The number of the cracking 25 of friendship.The cracking 25 observed in first surface (such as the surface of the 3rd diaphragm 3) can be counted
Number.The cracking 25 that second surface (such as surface of mold release film 13) in the dorsal part in first surface is observed can also be entered
Row is counted.Can be, the quantity of the cracking 25 observed in the first surface of polarization plates 1 per unit length 1mm be more than 0 and
Less than 3, and polarization plates 1 the quantity of cracking 25 observed of second surface per unit length 1mm be more than 0 and 3 with
Under.Polarization plates 1 are substantially transparent, therefore can be located at second surface from first surface side (face side of the 3rd diaphragm 3)
The cracking 25 of side (face side of mold release film 13).That is, the cracking observed in first surface side (face side of the 3rd diaphragm 3)
25 may not be formed at the first optical film (the 3rd diaphragm 3).Alternatively, it is also possible to the position from first surface side or second surface side
Cracking 25 in the inside of polarization plates 1.First surface side can be located at from second surface side (face side of mold release film 13)
The cracking 25 of (face side of the 3rd diaphragm 3).That is, the cracking 25 observed in second surface side (face side of mold release film 13)
The second optical film (mold release film 13) may not be formed at.Polarization plates 1 are substantially transparent, therefore in the side vertical with the surface of polarization plates 1
When the surface of polarization plates 1 is observed on to (Z-direction), the cracking 25 of distributed in three dimensions can be seen with the state of coincidence.That is, three
The cracking 25 of dimension distribution can be observed as the two-dimentional orthographic projection on the surface (X/Y plane) of polarization plates 1.With polarization
The multiple crackings 25 overlapped on the vertical direction (Z-direction) in the surface of plate 1 can be used as a cracking on the surface of polarization plates 1
25 and be seen.That is, the multiple crackings 25 overlapped on the direction (Z-direction) vertical with the surface of polarization plates 1 can be inclined
The surface of vibration plate 1 is counted as a cracking 25.
In the case where the quantity of cracking 25 is less than 3, easily further suppress light leakage.The length 1 of cracking 25 can be with
It it is 0 μm less than 50 μm.The length 1 of cracking 25 is observed on the direction (Z-direction) vertical with the surface of polarization plates 1
The length for the cracking 25 arrived, is the beeline of the end and the edge of through hole 21 of a side of cracking 25.Can be in the first table
Face (such as surface of the 3rd diaphragm 3) determines the length 1 of cracking 25.Can also the dorsal part in first surface the second table
Face (such as surface of mold release film 13) determines the length 1 of cracking 25.Can be, the tortoise being measured in the first surface of polarization plates 1
25 length 1 is split for 0 μm less than 50 μm, and is in the length 1 of cracking 25 that is measured to of second surface of polarization plates 1
0 μm less than 50 μm.It is less than in the length 1 of cracking 25 in the case of 50 μm, easily further suppressing can be by visuognosis
Degree light leakage.The quantity of cracking 25 is fewer, and cracking 25 is shorter, then more easy further suppression light leakage.In addition, cracking
25 quantity is fewer, and cracking 25 is shorter, then the mechanical strength of polarization plates 1 is higher, the easier manufacture for suppressing image display device
During polarization plates 1 breakage.Therefore, most preferably in the absence of cracking 25.
The diameter d (internal diameter d1 or d2) of through hole 21 for example can be 50~5000 μm.
The manufacture method of the polarization plates 1 of present embodiment includes：
By membranaceous polarizer and multiple processes that are optical film overlapped and forming layered product；And divide to layered product irradiation is accurate
The impulse wave of sub- laser and form the process through the hole (through hole 21) of layered product,
The output of PRK is less than 20W,
The 80% of the maximum of the intensity of the strength ratio luminous point of the outer peripheral portion of the luminous point of PRK is big,
The spotlight diameter of PRK is bigger than 50 μm,
The repetition rate of PRK is less than 1000Hz.
In the present embodiment, the part by excimer laser irradiation in above-mentioned layered product forms through hole 21.With
Under, describe each operation in detail.
Layered product is by being repeated fitting or the mutual patch of optical film for polarizer 7 and each optical film (3,5,9,13)
Close and obtain.It should be noted that adhesive layer 11 for example can be by applying adhesive and shape to the surface of the second diaphragm 9
Into.
PRK can be any one following.
F2Laser (oscillation wavelength：157nm)
ArF laser (oscillation wavelengths：193nm)
KrF laser (oscillation wavelengths：248nm)
XeCl laser (oscillation wavelengths：308nm)
XeF laser (oscillation wavelengths：351nm)
The oscillation wavelength of PRK is considerably shorter than the oscillation wavelength of other laser.For example, CO2The oscillation wavelength of laser is
9.4 μm or 10.6 μm.The short excimer laser irradiation of wavelength in the case of layered product, is being constituted into polarizer 7 and each light
The macromolecule for learning film (3,5,9,13) easily instantaneously decomposes, distilled, the heating of associated layered product with the irradiation of PRK
It is inhibited.Therefore, the small through hole 21 of verticality, the polarizer 7 as caused by heat and each optical film are easily simultaneously formed
Chemically rotten of (3,5,9,13) is also inhibited.On the other hand, the laser of wavelength length is being irradiated in the feelings of layered product
Under condition, in the illuminated part of laser, although temperature easily rises, but it is difficult to occur to constitute polarizer 7 and each optics
High molecular decomposition, the distillation of film (3,5,9,13).That is, the partial melting that has been heated by the irradiation by laser, become
Shape, just forms through hole.Therefore, assuming that in the case of laser using the wavelength length of wavelength ratio PRK, it is difficult to control
The verticality of through hole processed, easily forms polarization because of chemically rotten of polarizer 7 and each optical film (3,5,9,13)
Elimination portion.
PRK is output as 1W less than 20W.More than 20W situation is output as in PRK
Under, cracking 25 is easily formed around through hole 21, the width W in polarization elimination portion 23 easily becomes big.PRK it is defeated
Going out can be more than 5W and below 8W.
As shown in figure 4, the luminous point LS of PRK is circle.Along the center Lc of the luminous point LS by PRK
The luminous point LS intensity distribution ID of PRK of straight line be carnival hat type.Luminous point LS can rename as making and PRK
The section of the vertical PRK of direct of travel.Held using the verticality of through hole formed by the PRK of carnival hat type
It is easily smaller than the verticality that use intensity is distributed as through hole formed by the PRK of Gaussian.The luminous point of PRK
The 80% of the maximum ILc of LS outer peripheral portion Le intensity of the intensity I Le than luminous point LS is big and is less than the 100% of ILc.Change
Yan Zhi, (ILe/ILc) × 100 to 80% are big and are less than 100%.In other words, { (ILc-ILe)/ILc } × 100 are more than 0%
And less than 20%.ILc can rename as making the average value of the intensity of the flat part (top) in intensity distribution ID.ILc can also change
Referred to as luminous point LS center Lc intensity.In the case of ILe less than 80% for ILc, verticality a/b easily becomes big.Change speech
It, in the case of being less than 80% in (ILe/ILc) × 100, verticality a/b easily becomes big.In other words, (ILc-ILe)/
ILc } × 100 be more than 20% in the case of, verticality a/b easily becomes big.ILe can for ILc more than 90% and 95% with
Under.In other words, (ILe/ILc) × 100 can be more than 90% and less than 95%.In other words, { (ILc-ILe)/ILc } × 100
Can be more than 5% and less than 10%.Intensity I Le and intensity I Lc unit for example can be W/m2。
It is accurate in the case where being formed with the diameter d of the spotlight diameter equal extent of PRK through hole 21
The spotlight diameter of molecular laser is than 50 μm greatly and for less than 2000 μm.In the feelings that the spotlight diameter of PRK is less than 50 μm
Under condition, verticality a/b easily becomes big.The spotlight diameter of PRK can rename as making the straight of the luminous point LS of PRK
Footpath.The spotlight diameter of PRK can be more than 600 μm and less than 1000 μm.The spotlight diameter of PRK can not
It is consistent with the diameter d of through hole 21.For example, it is also possible to the surface by scanning layered product with the small PRK of spotlight diameter
Defined region, come formed have the diameter d bigger than the spotlight diameter of PRK through hole 21.
The repetition rate of PRK is 10Hz less than 1000Hz.It is in the repetition rate of PRK
In the case of more than 1000Hz, cracking 25 is easily formed, polarization elimination portion 23 is easily formed.The repetition rate of PRK
Can be more than 100Hz and below 500Hz.
There is the internal diameter of through hole 21 of the face side (such as side of the 3rd diaphragm 3) of illuminated PRK than its phase
Toss about (such as side of mold release film 13) through hole 21 the big tendency of internal diameter.
Polarizer 7 can be the membranaceous polyethenol series tree being fabricated to by processes such as extension, dyeing and crosslinkings
Fat.The details of polarizer 7 is as described below.
For example, first, membranaceous polyvinyl alcohol resin is extended along single shaft direction or biaxially oriented.Along single shaft side
There is high tendency in the dichroic ratio to the polarizer 7 after extension.After extension, using the dyeing liquor for including KI etc., by
Iodine or dichroism pigment (poly- iodine) are dyed to polyvinyl alcohol resin.Dyeing liquor can also include boric acid, zinc sulfate or chlorine
Change zinc.Polyvinyl alcohol resin can also be washed before dyeing.By washing from the surface of polyvinyl alcohol resin
Remove dirt and anti-sticking agent.In addition, polyvinyl alcohol resin is swelled because of washing, as a result easily suppress the color spot of dyeing
(uneven dyeing).The poly- second after dyeing is handled by the solution (such as the aqueous solution of boric acid) of crosslinking agent in order to realize crosslinking
Enol system resin.After the processing carried out based on crosslinking agent, polyvinyl alcohol resin is washed, then to polyethenol series
Resin is dried.Polarizer 7 is obtained by above step.Polyvinyl alcohol resin is by by polyvinyl acetate system resin
Carry out saponification and obtain.Polyvinyl acetate system resin for example can be vinyl acetate homopolymer i.e. polyvinyl acetate,
Or vinyl acetate and the copolymer of other monomers (such as vinyl-vinyl acetate copolymer).With vinyl acetate copolymerization
Other monomers can also be unsaturated carboxylic acid class, olefines, vinyl ethers, unsaturated sulfonic acid class or tool in addition to ethene
There is the acrylic amide of ammonium.Polyvinyl alcohol resin can also be modified by aldehydes.Modified polyvinyl alcohol resin is for example
Can be part formalizing polyvinyl alcohol, polyvinyl acetal or polyvinyl butyral resin.Polyvinyl alcohol resin can be with
It is the dewater treatment thing of polyvinyl alcohol or the polyene system alignment films such as desalination acid treatment thing of polyvinyl chloride.Can also be before extension
Dyed, can also be extended in dyeing liquor.The length of polarizer 7 after extension for example can be the length before extension
3~7 times.
The thickness of polarizer 7 for example can be more than 1 μm and less than 50 μm or more than 4 μm and less than 30 μm.Generally, exist
In the case that thin polarizer 7 extends along single shaft direction, in perforate process or small pieces cutting action, easily formed along prolonging
Stretch the cracking 25 in direction.But, by using the above-mentioned perforate process of PRK, the formation of cracking 25 can be suppressed.
First diaphragm 5 and the second diaphragm 9 be the thermoplastic resin with translucency can or optically
Transparent thermoplastic resin.The resin for constituting the first diaphragm 5 and the second diaphragm 9 for example can be chain polyolefin tree
Fat, cyclic olefin polymer system resin (COP systems resin), cellulose esters system resin, polyester based resin, polycarbonate-based resin,
(methyl) acrylic resin, polystyrene resin or their mixture or copolymer.The composition of first diaphragm 5
Can be identical with the composition of the second diaphragm 9.The composition of first diaphragm 5 can also be with the composition of the second diaphragm 9 not
Together.
Chain polyolefin-based resins for example can be the homopolymerization of chain olefin as polyvinyl resin or acrylic resin
Body.Chain polyolefin-based resins can also be the copolymer being made up of two or more chain olefins.
Cyclic olefin polymer system resin (cyclic polyolefin hydrocarbon system resin) for example can be that the open loop of cyclic olefin is (common) poly-
The addition polymerization body of fit or cyclic olefin.Cyclic olefin polymer system resin for example can be cyclic olefin and chain olefin
Copolymer (such as random copolymer).The chain olefin for constituting copolymer for example can be ethene or propylene.Cyclic olefin gathers
Compound system resin can also be grafted obtained from unsaturated carboxylic acid or derivatives thereof is modified to above-mentioned condensate
Condensate or their hydride.Cyclic olefin polymer system resin for example can be to use ENB or polycyclic norborneol
The norbornene resin of the norborneol alkene monomer such as alkene monomer.
Cellulose esters system resin for example can be cellulosic triacetate (triacetyl cellulose (TAC)), cellulose diethyl
Acid esters, cellulose tripropionate or cellulose dipropionate.Their copolymer can also be used.It can also use and be taken with other
Cellulose esters system resin obtained from having modified a part for hydroxyl for base.
The polyester based resin beyond cellulose esters system resin can also be used.Polyester based resin for example can be polybasic carboxylic acid
Or derivatives thereof condensation polymer with polyalcohol.Polybasic carboxylic acid or derivatives thereof can be dicarboxylic acids or derivatives thereof.Polynary carboxylic
Acid or derivatives thereof for example can be terephthalic acid (TPA), M-phthalic acid, dimethyl terephthalate (DMT) or naphthalenedicarboxylic acid diformazan
Ester.Polyhydric alcohols such as can be glycol.Polyhydric alcohols such as can be ethylene glycol, propane diols, butanediol, neopentyl glycol or hexamethylene
Alkane dimethanol.
Polyester based resin for example can be polyethylene terephthalate, polybutylene terephthalate (PBT), poly- naphthalene two
Formic acid glycol ester, PBN, PTT, polytrimethylene naphthalate, poly- pair
Cyclohexyl dimethyl ester or poly- naphthalenedicarboxylic acid cyclohexane dicarboxylates.
Polycarbonate-based resin is the condensate that polymerized unit (monomer) is bonded by carbonate group.It is polycarbonate-based
Resin can be modified polycarbonate or copolymerization polycarbonate with the polymer backbone after modification.
(methyl) acrylic resin for example can be：Poly- (methyl) acrylate (such as polymethyl methacrylate
(PMMA))；Methyl methacrylate-(methyl) acrylic copolymer；Methyl methacrylate-(methyl) acrylic ester copolymer
Thing；Methyl methacrylate-acrylate-(methyl) acrylic copolymer；(methyl) acrylate-styrene copolymer
(such as MS resins)；Methyl methacrylate and copolymer (such as methyl methacrylate of the compound with alicyclic alkyl
Ester-cyclohexyl methacrylate copolymer, methyl methacrylate-(methyl) acrylic acid norborneol ester copolymer etc.).
Clip the optics of at least one party in a pair of optical films (the first diaphragm 5 and the second diaphragm 9) of polarizer 7
Film can include triacetyl cellulose (TAC).Clip a pair of optical films (the first diaphragm 5 and the second diaphragm of polarizer 7
9) optical film of at least one party in can include cyclic olefin polymer system resin (COP systems resin).Clip the one of polarizer 7
Polymethylacrylic acid can be included to the optical film of at least one party in optical film (the first diaphragm 5 and the second diaphragm 9)
Methyl esters (PMMA).Clipping a pair of optical films (the first diaphragm 5 and the second diaphragm 9) both sides of polarizer 7 can also include
Triacetyl cellulose.In can also being a pair of the optical films (the first diaphragm 5 and the second diaphragm 9) for clip polarizer 7
The film of one side includes triacetyl cellulose, and the film for clipping the opposing party in a pair of optical films of polarizer 7 gathers comprising cyclic olefin
Compound.It can also be the film of the side in a pair of the optical films (the first diaphragm 5 and the second diaphragm 9) for clip polarizer 7
Comprising triacetyl cellulose, the film for clipping the opposing party in a pair of optical films of polarizer 7 includes polymethyl methacrylate.
Can be that the film of a side in a pair of the optical films (the first diaphragm 5 and the second diaphragm 9) for clip polarizer 7 includes ring
Shape olefin polymer system resin, the film for clipping the opposing party in a pair of optical films of polarizer 7 includes polymethyl methacrylate.
In the case where the optical film being made up of TAC, COP system resin or PMMA connects with polarizer 7, by conventional processing method come
The formation for reducing the verticality a/b of through hole 21 and suppressing polarization elimination portion 23 and cracking 25 is difficult.But, by making
With the above-mentioned perforate process of PRK, it is possible to decrease the verticality a/b of through hole 21, and suppress polarization elimination portion 23 and
The formation of cracking 25.
The vitrification point Tg of polarizer 7 or each optical film (3,5,9 or 13) can be 100~180 DEG C or 108~180
℃.In optical film (3,5,9 or 13) by the case that triacetyl cellulose (TAC) is constituted, the glass of optical film (3,5,9 or 13)
It can be 160~180 DEG C to change temperature Tg.In optical film (3,5,9 or 13) by cyclic olefin polymer system resin (COP systems tree
Fat) constitute in the case of, the vitrification point Tg of optical film (3,5,9 or 13) can be 126~136 DEG C.Optical film (3,5,
9 or 13) by the case that polymethyl methacrylate (PMMA) is constituted, the vitrification point Tg of optical film (3,5,9 or 13) can
To be 108~136 DEG C.In the situation that the vitrification point Tg of polarizer 7 and each optical film (3,5,9,13) is more than 100 DEG C
Under, for polarization plates 1, excellent heat resistance easily suppresses to polarize as caused by the heat associated with the irradiation of PRK
The deformation of plate 1.
First diaphragm 5 or the second diaphragm 9 can be included from by lubricant, plasticizer, dispersant, heat stabilizer, purple
At least one additive selected in the group that ultraviolet absorbers, infrared absorbent, antistatic agent and antioxidant are constituted.
The thickness of first diaphragm 5 for example can be more than 5 μm and less than 90 μm, more than 5 μm and less than 80 μm or 5 μm
Above and less than 50 μm.The thickness of second diaphragm 9 also for example can be more than 5 μm and less than 90 μm, more than 5 μm and 80 μm with
Under or more than 5 μm and less than 50 μm.
First diaphragm 5 or the second diaphragm 9 can be the films as phase retardation film or brightness enhancement film with optical function.
For example, by the film being made up of above-mentioned thermoplastic resin extension, liquid crystal layer etc. is formed on the film, it can thus be concluded that appointing to having been assigned
The phase retardation film of the phase difference value of meaning.
First diaphragm 5 can fit in polarizer 7 via adhesive linkage.Second diaphragm 9 can also be via adhesive linkage
And fit in polarizer 7.Adhesive linkage can also can be penetrated comprising water system bonding agents such as polyvinyl alcohol comprising active-energy described later
Line curable resin.
Active energy ray-curable resin is the resin solidified by illuminated active energy beam.Active-energy is penetrated
Line for example can be ultraviolet, visible ray, electron ray or X-ray.Active energy ray-curable resin can be ultraviolet
Curable resin.
Active energy ray-curable resin can be a kind of resin, can also include various kinds of resin.For example, active-energy
Ray-curable resin can the curability compound comprising cationically polymerizable or free-radical polymerised curability chemical combination
Thing.The cation that active energy ray-curable resin can include the curing reaction for being used to trigger above-mentioned curability compound gathers
Close initiator or radical polymerization initiator.
The curability compound of cationically polymerizable for example can be that epoxy based compound (has at least one in intramolecular
The compound of epoxy radicals) or oxetanes based compound (intramolecular have at least one oxetanes ring chemical combination
Thing).Free-radical polymerised curability compound for example can be that (methyl) acrylic compounds (have at least in intramolecular
The compound of one (methyl) acryloxy).Free-radical polymerised curability compound can also be with radical polymerization
The vinyl compound of the double bond of conjunction property.
Active energy ray-curable resin can as needed and comprising cationic polymerization accelerator, ion trap agent,
Antioxidant, chain-transferring agent, tackifier, thermoplastic resin, filler, flow modifier, plasticizer, defoamer, antistatic agent,
Levelling agent or solvent etc..
Adhesive layer 11 can for example include acrylic acid series pressure-sensitive type bonding agent, rubber series pressure-sensitive type bonding agent, silicone-based sense
The pressure-sensitive type bonding agent such as die mould bonding agent or polyurethane series pressure-sensitive type bonding agent.The thickness of adhesive layer 11 for example can be 2 μm with
Go up and less than 500 μm, more than 2 μm and less than 200 μm or more than 2 μm and less than 50 μm.
The resin for constituting the 3rd diaphragm 3 can be with the example as the resin for constituting the first diaphragm 5 or the second diaphragm 9
The above-mentioned resin lifted is identical.The thickness of 3rd diaphragm 3 for example can be more than 5 μm and less than 200 μm.
The resin for constituting mold release film 13 can be with enumerating as the resin for constituting the first diaphragm 5 or the second diaphragm 9
Above-mentioned resin it is identical.The thickness of mold release film 13 for example can be more than 5 μm and less than 200 μm.
The image display device of the present invention is such as can be liquid crystal display device or organic EL display.For example, such as
Shown in Fig. 5, the liquid crystal display device 30 of present embodiment possess liquid crystal cells 10, be overlapped in liquid crystal cells 10 a side surface
The polarization plates 1a (the first polarization plates) of (first surface) and be overlapped in liquid crystal cells 10 the opposing party surface (second surface)
Another polarization plates 1b (the second polarization plates).Polarization plates 1a and 1b shown in Fig. 5 be not except possessing mold release film 13 and the 3rd
Beyond this point of diaphragm 3, other are identical with the polarization plates 1 shown in Fig. 1 and 2.Polarization plates 1a (the first polarization plates) is via bonding
Layer 11 and be pasted on the first surfaces of liquid crystal cells 10.Polarization plates 1a (the first polarization plates) has be overlapped in liquid crystal cells 10 the
The adhesive layer 11 on one surface, the second diaphragm 9 for being overlapped in adhesive layer 11, the polarizer 7 for being overlapped in the second diaphragm 9 and
It is overlapped in the first diaphragm 5 of polarizer 7.Another polarization plates 1b (the second polarization plates) is pasted on liquid crystal list via adhesive layer 11
The second surface of member 10.Another polarization plates 1b (the second polarization plates) has the adhesive layer for the second surface for being overlapped in liquid crystal cells 10
11st, the second diaphragm 9 of adhesive layer 11 is overlapped in, the polarizer 7 of the second diaphragm 9 is overlapped in and is overlapped in polarizer 7
First diaphragm 5.Liquid crystal cells 10 and a pair of polarization plates 1a and 1b constitute liquid crystal panel 20.Liquid crystal panel 20 and backlight (face
Light supply apparatus) etc. other components constitute liquid crystal display device 30.Other components such as backlight are omitted in Figure 5.
More than, one embodiment of the present invention is illustrated, but the present invention is not limited to above-mentioned embodiment.
The shape of polarization plates can be corresponding with purposes variously-shaped.Here, the shape of polarization plates refers to from Fig. 1~3
The overall shape of the polarization plates observed of Z-direction (direction vertical with the surface of polarization plates 1).For example, the shape of polarization plates
It can be the polygon beyond quadrangle.For example, polarization plates can also be circular, ellipse or indefinite shape.Outside polarization plates
Edge only can be made up of straight line (multiple sides).Here, the outer rim of polarization plates refers to the Z-direction (table with polarization plates from Fig. 1~3
The vertical direction in face) observe polarization plates outer rim.The outer rim of polarization plates only can be made up of curve.Polarizer 7 and each
Optical film (3,5,9,13) respective shape can also be various shape corresponding with purposes.
The shape on the direction (X/Y plane direction) parallel with the surface of polarization plates 1 of through hole can be and polarization plates
Purposes it is variously-shaped accordingly.The shape of through hole can be the shape beyond circle.For example, the shape of through hole can be ellipse
Circular, polygon or indefinite shape.Multiple through holes 21 can be formed with polarization plates 1.It can form tangible in polarization plates 1
The multiple through holes of shape identical.Shape multiple through holes different from each other can be formed with polarization plates 1.Passing through in polarization plates 1
The position of through hole is not limited.For example, in the case where polarization plates 1 is circles, through hole can be formed at the surface of polarization plates 1
Center (round center).
The number for the optical film (optical film for being overlapped in polarizer) that polarization plates possess is not limited.Polarization plates are possessed
The number of optical film can be one.For example, the polarization plates 1 shown in Fig. 1 and 2 can not also possess the first diaphragm 5 with
And the second diaphragm of either one in diaphragm 9, can not also possess the diaphragm of both sides.For example, the polarization plates shown in Fig. 5
1a (the first polarization plates) and polarization plates of either one or the polarization plates of both sides in polarization plates 1b (the second polarization plates) can also
Do not possess the diaphragm of either one in the first diaphragm 5 and the second diaphragm 9.Polarization plates 1a (the first polarizations shown in Fig. 5
Plate) and polarization plates of either one or the polarization plates of both sides in polarization plates 1b (the second polarization plates) can not also possess both sides'
Diaphragm.
Mold release film can also be configured at the two sides of polarization plates via adhesive layer.
The optical film that polarization plates possess can also be that reflective polarizing film, the film with anti-dazzle function, belt surface reflection are anti-
Only the film of function, reflectance coating, Transflective film, compensation film for angular field of view, optical compensating layer, touch sensing layer, antistatic layer or
Stain-proofing layer.
Polarization plates can also be also equipped with hard conating.For example, in polarization plates 1, the first diaphragm 5 can be located at hard conating with
Between polarizer 7, hard conating can be located between the first diaphragm 5 and the 3rd diaphragm 3.In this case, the first diaphragm 5
Triacetyl cellulose can be included.The case hardness (pencil hardness) of hard conating can be more than H and below 5H or more than 2H and
Below 5H.Pencil hardness is defined hardness based on Japanese Industrial Standards (JIS K 5400).Pencil hardness is in above-mentioned model
Hard conating in enclosing is not readily susceptible to damage in the manufacturing process of polarization plates 1.But, hard conating can become fragile if hard, therefore
In the case where forming through hole using conventional processing method, easily it is cracked in hard conating formation.But, by using standard
The above-mentioned perforate process of molecular laser, can suppress the formation of the cracking in hard conating.
Hard conating is, for example, the layer being made up of the acrylic resin film that fine concaveconvex shape is provided with surface.It is hard to apply
Layer can for example be formed by the film containing organic particle or inorganic fine particles.Can also use the film being crimped on has
The method of the roller of concaveconvex shape (such as embossing).The painting of organic particle or inorganic fine particles can not also be contained in formation
After film, the method that the film is crimped on to the roller with concaveconvex shape is used.
Inorganic fine particles for example can be silica, cataloid, aluminum oxide, alumina sol, alumino-silicate,
Alumina silica composite oxides, kaolin, talcum, mica, calcium carbonate, calcium phosphate etc..In addition, organic particle (tree
Fat granule) it for example can be crosslinked polypropylene acid particles, methyl methacrylate/styrene copolymer resin particle, be crosslinked and gather
Styrene particles, crosslinked polymethylmethacrylaparticles particle, silicone resin particle, polyimide particle etc..
For making inorganic fine particles or the scattered Binder Composition of organic particle be selected from the material of high rigidity (hard conating)
It is fixed.Binder Composition for example can be uv curing resin, heat-curing resin, electron ray curing resin
Deng.From viewpoints such as productivity ratio, hardness, as Binder Composition, uv curing resin is preferably used.
The thickness of hard conating for example can be more than 2 μm and less than 30 μm or more than 3 μm and less than 30 μm.In hard conating
Thickness be more than 2 μm in the case of, be readily obtained the sufficient hardness of hard conating, the surface of hard conating is more difficult to be damaged
Wound.In the case where the thickness of hard conating is less than 30 μm, there is following tendency：Hard conating does not allow easily rupturable, easily suppression more
The bending (clot) of the polarization plates as caused by the cure shrinkage of hard conating is made, productivity ratio is easily improved.
Can be that the thickness of polarizer 7 is less than 30 μm, and the monomer transmissivity T of polarizer 7 is more than 42.5, and partially
Shake piece 7 degree of polarization P be more than 99.9.In the past, it is thin and in the case that monomer transmissivity and degree of polarization are big in polarizer, easily
Light leakage is recognized being formed at around the through hole of polarization plates.But, opened in above-mentioned by using PRK
Hole process in the case of forming the small through hole 21 of verticality, can suppress to possess thin and monomer transmissivity and degree of polarization are big
Polarizer 7 polarization plates 1 in light leakage.
The moisture rate for the layered product being made up of polarizer 7, the first diaphragm 5 and second diaphragm 9 these three films can be with
It is 1.0~5.0%, 0.5~5.5% or 1.0~5.0%.By moisture rate within the above range, easily suppress and heating
The warpage of associated polarization plates 1, easily further suppresses the light leakage in polarization plates 1.
In the polarization plates 1 shown in Fig. 1 and 2, the internal diameter of the through hole 21 of the side of the 3rd diaphragm 3 (the first optical film side)
D1 is bigger than the internal diameter d2 of the through hole 21 of the side of mold release film 13 (the second optical film side) but it is also possible to be, the side of the 3rd diaphragm 3 (the
One optical film side) through hole 21 through holes 21 of the internal diameter d1 than the side of mold release film 13 (the second optical film side) internal diameter d2 it is small.
In other words, in the polarization plates 1 shown in Fig. 1 and 2, the internal diameter d1 of the through hole 21 of the side of the first diaphragm 5 is than the second diaphragm 9
The internal diameter d2 of the through hole 21 of side is big but it is also possible to be the internal diameter d1 of the through hole 21 of the side of the first diaphragm 5 is than the second diaphragm
The internal diameter d2 of the through hole 21 of 9 sides is small.
Polarization plates 1 can not also possess one or both in the 3rd diaphragm 3 and mold release film 13.For example, can be
The 3rd diaphragm 3 is peeled off from polarization plates 1 in the manufacturing process of image display device, removed.That is, the 3rd diaphragm 3 can be
Temporary protective film.Also mold release film 13 can be peeled off from polarization plates 1 in the manufacturing process of image display device, removed.
【Embodiment】
Hereinafter, the present invention is described in more detail by embodiment, but the present invention is not limited to these embodiments.
(embodiment 1)
Form the layered product of the tabular being made up of polarizer 7 and optical film (3,5,9,13) as shown in Figure 1.Stacking
Body possesses mold release film 13, the adhesive layer 11 for being overlapped in mold release film 13, the second diaphragm 9 for being overlapped in adhesive layer 11, is overlapped in
The polarizer 7 of two diaphragms 9, the first diaphragm 5 for being overlapped in polarizer 7 and the 3rd protection for being overlapped in the first diaphragm 5
Film 3.As polarizer 7, the membranaceous polyvinyl alcohol being extended and after being colored is used.It is hard using band as the first diaphragm 5
Triacetyl cellulose (TAC) film (25KCHCN-TC of letterpress (Co., Ltd.) system) of coating.As the second diaphragm 9,
Use the film (ZF14-023- that Japanese ZEON (Co., Ltd.) is made being made up of cyclic olefin polymer system resin (COP systems resin)
1350).As the 3rd diaphragm 3, the PET protecting films (AS3-304 that rattan lumber industry (Co., Ltd.) is made) with adhesive are used.
As mold release film 13, use PET (SP-PLR382050 of LINTEC (Co., Ltd.) systems).The thickness of mold release film 13 is 38 μm.
The thickness of adhesive layer 11 is 20 μm.The thickness of second diaphragm 9 is 23 μm.The thickness of polarizer 7 is 12 μm.First diaphragm 5
Thickness be 32 μm.The thickness of 3rd diaphragm 3 is 60 μm.The overall thickness of layered product is (suitable with the thickness b of polarization plates 1
Thickness) it is 185 μm.The longitudinally wide of layered product entirety is 110mm.The overall transverse width of layered product is 60mm.
The impulse wave of PRK is irradiated in the surface of the side of the 3rd diaphragm 3 of layered product, so that in the stacking bodily form
Into such through hole 21 shown in Fig. 1 and 2.The polarization plates 1 of embodiment 1 are obtained by each operation above.It is used as standard point
Sub- laser, uses the ArF laser that oscillation wavelength is 193nm.As the oscillator of PRK, Mlase company systems are used
MLI series (model 1000).The output of PRK is set to 5W.As shown in figure 4, the luminous point LS of PRK is round
Shape.The luminous point LS of PRK outer peripheral portion Le intensity is being denoted as ILe, the maximum of luminous point LS intensity is (flat
The intensity at smooth top) when being denoted as ILc, { (ILc-ILe)/ILc } × 100 are 5%.Hereinafter, by { (ILc-ILe)/ILc } ×
100 are referred to as " Density Distribution ".The spotlight diameter of PRK is set as 1000 μm.The repetition rate of PRK is set as
100Hz。
As shown in figure 3, the shape on the direction (X/Y plane direction) parallel with the surface of polarization plates 1 of through hole 21 is
It is circular.The opening portion of the opening portion of the side of the 3rd diaphragm 3 of through hole 21 and the side of mold release film 13 of through hole 21 is concentric a pair
Circle.The internal diameter d1 (diameter) positioned at the side of the 3rd diaphragm 3 of through hole 21 (circular opening portion) is determined.In addition,
Also the internal diameter d2 (diameter) positioned at the side of mold release film 13 of through hole 21 (circular opening portion) is determined.Through hole 21
Phases in threeth diaphragm 3 side of the internal diameter d1 than through hole 21 in the side of the 3rd diaphragm 3 of illuminated PRK
Toss about (side of mold release film 13) internal diameter d2 it is big.D1 and d2 measured value is close with the spotlight diameter of PRK
Value.Verticality i.e. (d1-d2)/2b of through hole 21 is calculated according to d1 and d2 measured value.The verticality of embodiment 1 is
0.06。
Through hole 21 is entered around the illuminated side of the 3rd diaphragm 3 of PRK using light microscope
Observation is gone.Attempted by the observation to being formed in the cracking around through hole 21, length 1 is less than 50 μm of cracking
Quantity and length 1 are counted for the quantity of more than 50 μm of cracking.It should be noted that cracking number definition with it is above-mentioned
Embodiment it is same.In addition, defining for the length 1 of cracking is same with above-mentioned embodiment.Observation as a result, implement
Around the through hole 21 of the polarization plates 1 of example 1,50 μm of cracking is less than in the absence of length 1.In addition, in the polarization plates of embodiment 1
Around 1 through hole 21, also in the absence of the cracking that length 1 is more than 50 μm.
The above-mentioned observation carried out by using light microscope (is become to attempt the polarization elimination portion 23 around through hole 21
Color portion) width W measure.But, around the through hole 21 of polarization plates 1, in the absence of polarization elimination portion 23.
As shown in (a) and (b) in Fig. 6, the entire surface of backlight 64 (area source) is covered by downside polarization plates 62.Downside
Polarization plates 62 are another polarization plates for the polarization plates of embodiment 1.Make the mold release film 13 of the polarization plates (1s) of embodiment 1
In face of downside polarization plates 62.The polarization plates 1s of embodiment 1 is overlapped on the polarization plates 62 of downside, and makes the polarization of embodiment 1
Plate 1s absorption axiss A1s is orthogonal with the absorption axiss A62 of downside polarization plates 62.Upside polarization plates 60 are overlapped in the inclined of embodiment 1
On vibration plate 1s, and the absorption axiss A60 of upside polarization plates 60 is configured to put down with the polarization plates 1s of embodiment 1 absorption axiss A1s
OK.Upside polarization plates 60 are also another polarization plates for the polarization plates of embodiment 1.
Backlight 64 is lighted in the state of the polarization plates 1s of embodiment 1 is configured with as described above, and visually observation is implemented
The polarization plates 1s of example 1.Observation as a result, in the absence of around polarization plates 1s through hole 21s light leak.
(embodiment 2~7, comparative example 1~4)
In embodiment 6, as PRK, KrF laser (oscillation wavelengths are used instead of ArF laser：248nm).
In embodiment 7, using in addition to not possessing mold release film 13, the diaphragm 3 of adhesive layer 11 and the 3rd other with
The situation identical layered product of embodiment 1.Hereinafter, for convenience of description, by the second diaphragm side view of the polarization plates of embodiment 7
Make " the mold release film side " of the polarization plates of embodiment 7.The inclined of embodiment 7 is made into first diaphragm side view of the polarization plates of embodiment 7
" the 3rd diaphragm side " of vibration plate.In table 1 below, the 3rd diaphragm is denoted as " pf ", mold release film is denoted as " Sp ".
In embodiment 2~7 and comparative example 1~4, by the output of PRK, Density Distribution, spotlight diameter and
Repetition rate is set as the value shown in table 1 below.
Other are same as Example 1 in addition to item more than, using PRK in layered product formation through hole,
So as to obtain embodiment 2~7 and the respective polarization plates of comparative example 1~4.
The insertion of embodiment 2~7 and the respective polarization plates of comparative example 1~4 is obtained using method similarly to Example 1
The verticality in hole.Embodiment 2~7 and the respective verticality of comparative example 1~4 are shown in table 1 below.
Using method similarly to Example 1, respectively to the illuminated standard in embodiment 2~7 and comparative example 1~4
The surface of 3rd diaphragm of molecular laser is observed, and the quantity of the cracking to being formed at around through hole is counted
Number, determines the length of each cracking.The quantity by the cracking in embodiment 2~7 and comparative example 1~4 is shown in table 1 below respectively.
In any embodiment, the quantity for the cracking being formed at around through hole is less than 3.In any embodiment, it is formed at
The length of cracking around through hole is less than 50 μm.
Using method similarly to Example 1, respectively to the 3rd diaphragm in embodiment 2~7 and comparative example 1~4
The surface of side is observed, and the width in the polarization elimination portion (discoloration portion) around through hole is determined.Respectively will be real
The width W for applying the polarization elimination portion (discoloration portion) in example 2~7 and comparative example 1~4 is shown in table 1 below.In any embodiment
In, the width of polarization elimination portion (discoloration portion) is respectively less than 32 μm.
Using method similarly to Example 1, passing through to the polarization plates in embodiment 2~7 and comparative example 1~4 respectively
Light leakage around through hole is checked.Inspection result is shown in table 1 below.
Industrial applicability
The polarization plates of the present invention can be used as constituting LCD TV, have such as being pasted on liquid crystal cells or organic EL device
The optical component of the image display device such as machine EL TVs or smart mobile phone.
Claims (7)
1. a kind of polarization plates, it possesses membranaceous polarizer and is overlapped in multiple optical films of the polarizer,
The polarization plates are characterised by,
Verticality through the hole of the polarization plates for 0.00 less than 0.32,
The width in the polarization elimination portion around the hole is for 0.00 μm less than 32 μm.
2. polarization plates according to claim 1, wherein,
The quantity of cracking around the hole is more than 0 and less than 3 in per unit length 1mm.
3. polarization plates according to claim 1 or 2, wherein,
The length of cracking around the hole is 0 μm less than 50 μm.
4. polarization plates according to any one of claim 1 to 3, wherein,
The optical film for clipping at least one party in optical film described in a pair of the polarizer includes triacetyl cellulose.
5. polarization plates according to any one of claim 1 to 4, wherein,
The optical film for clipping at least one party in optical film described in a pair of the polarizer includes cyclic olefin polymer.
6. polarization plates according to any one of claim 1 to 5, wherein,
The optical film for clipping at least one party in optical film described in a pair of the polarizer includes polymethyl methacrylate.
7. a kind of image display device, it is characterised in that
Including the polarization plates any one of claim 1 to 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016031293A JP6188845B2 (en) | 2016-02-22 | 2016-02-22 | Polarizing plate and image display device |
| JP2016-031293 | 2016-02-22 |
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| Publication Number | Publication Date |
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| CN107102389A true CN107102389A (en) | 2017-08-29 |
| CN107102389B CN107102389B (en) | 2018-11-02 |
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| CN201710082514.XA Active CN107102389B (en) | 2016-02-22 | 2017-02-15 | Polarization plates and image display device |
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| Country | Link |
|---|---|
| JP (1) | JP6188845B2 (en) |
| KR (1) | KR101911166B1 (en) |
| CN (1) | CN107102389B (en) |
| TW (2) | TWI633346B (en) |
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| CN109407198A (en) * | 2018-12-19 | 2019-03-01 | 武汉华星光电技术有限公司 | Polaroid and display panel |
| CN110794501A (en) * | 2018-08-01 | 2020-02-14 | 日东电工株式会社 | Polarizing element, polarizing plate, and image display device |
| WO2022227706A1 (en) * | 2021-04-25 | 2022-11-03 | 惠州视维新技术有限公司 | Brightness enhancement film |
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| JP7013279B2 (en) * | 2018-02-28 | 2022-01-31 | 日東電工株式会社 | Polarizer and its manufacturing method |
| JP7046901B2 (en) * | 2018-12-25 | 2022-04-04 | 日東電工株式会社 | Polarizer and its manufacturing method |
| JP7390799B2 (en) * | 2019-04-17 | 2023-12-04 | 日東電工株式会社 | Optical laminate and its manufacturing method, and display device |
| CN110441852B (en) * | 2019-08-14 | 2021-04-06 | 惠州市富丽电子有限公司 | Production process of pore polaroid |
| JP7387361B2 (en) * | 2019-09-27 | 2023-11-28 | 日東電工株式会社 | Optical laminates and image display devices |
| JP2021086114A (en) * | 2019-11-29 | 2021-06-03 | 住友化学株式会社 | Polarizing plate |
| JP7220764B1 (en) | 2021-11-02 | 2023-02-10 | 住友化学株式会社 | METHOD FOR MANUFACTURING FILM WITH THROUGH HOLE, AND CIRCULAR POLARIZER |
| JP2023180881A (en) * | 2022-06-10 | 2023-12-21 | 日東電工株式会社 | Optical laminate and method for manufacturing the same, and image display device using the optical laminate |
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- 2017-02-13 KR KR1020170019244A patent/KR101911166B1/en active IP Right Grant
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| KR101065790B1 (en) * | 2008-09-29 | 2011-09-20 | (주)와이티에스 | Laser nozzle apparatus for cutting polaroid film |
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| WO2022227706A1 (en) * | 2021-04-25 | 2022-11-03 | 惠州视维新技术有限公司 | Brightness enhancement film |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170098698A (en) | 2017-08-30 |
| JP2017151162A (en) | 2017-08-31 |
| TW201734516A (en) | 2017-10-01 |
| CN107102389B (en) | 2018-11-02 |
| TWI633346B (en) | 2018-08-21 |
| JP6188845B2 (en) | 2017-08-30 |
| TW201839433A (en) | 2018-11-01 |
| KR101911166B1 (en) | 2018-10-23 |
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