CN106990117A - The inspection method of polarizer and the manufacture method of Polarizer - Google Patents
The inspection method of polarizer and the manufacture method of Polarizer Download PDFInfo
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- CN106990117A CN106990117A CN201610867936.3A CN201610867936A CN106990117A CN 106990117 A CN106990117 A CN 106990117A CN 201610867936 A CN201610867936 A CN 201610867936A CN 106990117 A CN106990117 A CN 106990117A
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- polarizer
- unpolarized
- unpolarized portion
- image pickup
- inspection method
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J4/00—Measuring polarisation of light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
-
- 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
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/149—Beam splitting or combining systems operating by reflection only using crossed beamsplitting surfaces, e.g. cross-dichroic cubes or X-cubes
-
- 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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Polarising Elements (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A kind of inspection method of polarizer and the manufacture method of Polarizer are provided.Unpolarized portion is efficiently formed with high accuracy in polarizer, so that the unpolarized portion turns into desired shape and characteristic.A kind of inspection method, checks that this method includes to the polarizer with unpolarized portion：Image pickup step, from the side irradiation light of the polarizer, the light for having passed through the polarizer is shot from opposite side；And checking step, the unpolarized portion of the polarizer is checked based on resulting image.
Description
Technical field
The present invention relates to a kind of inspection method and the manufacture method of Polarizer of the polarizer with unpolarized portion.
Background technology
Video camera etc. is equipped with sometimes in the image display devices such as portable phone, notebook personal computer (PC)
Internal electrical components.For the purpose of camera performance to improve this image display device etc., carried out various researchs (for example,
Patent document 1~7).But, with the rapid popularization of the board-like information processor of smart phone, touch surface, expect video camera
The further raising of performance etc..In addition, the variation and multifunction of the shape in order to support image display device, it is desirable to a kind of
Partly there is the Polarizer of polarization property.Expect with it is permissible into original manufacture image display device and/or its part with
This requirement industrially is realized with commercial, but the various items for needing to study are remained in order to set up this technology.
Patent document 1：Japanese Unexamined Patent Publication 2011-81315 publications
Patent document 2：Japanese Unexamined Patent Publication 2007-241314 publications
Patent document 3：No. 2004/0212555 specification of U.S. Patent Application Publication No.
Patent document 4：KR published patent 10-2012-0118205 publications
Patent document 5：Korean Patent No. 10-1293210 publications
Patent document 6：Japanese Unexamined Patent Publication 2012-137738 publications
Patent document 7：No. 2014/0118826 specification of U.S. Patent Application Publication No.
The content of the invention
Problems to be solved by the invention
Unpolarized portion is provided with polarizer and makes the unpolarized portion corresponding with the camera unit of image display device etc.
In the case of, with the miniaturization of image display device in recent years, the unpolarized portion is also designed to be very small.Therefore,
Ask with high accuracy that unpolarized portion is efficiently formed, so that the unpolarized portion turns into desired shape and characteristic.
The solution used to solve the problem
According to the present invention, there is provided a kind of inspection method checked the polarizer with unpolarized portion.The reviewing party
Method includes：Image pickup step, from the side irradiation light of the polarizer with unpolarized portion, shoots from opposite side and has passed through the polarizer
Light；And checking step, the unpolarized portion of the polarizer is checked based on resulting image.
In one embodiment, the polarizer be strip, with length direction and/or width with advise
The unpolarized portion of fixed interval configuration.
In one embodiment, the polarizer is conveyed along its length while carrying out the image pickup step on one side.
In one embodiment, the polarizer is made up of the resin film comprising dichroic substance, the resin film
The dichroic substance low concentration portion that the amount of the interior, dichroic substance is relatively low is set as the unpolarized portion.
In one embodiment, matcoveredn is formed at least side of the polarizer for the image pickup step.
In one embodiment, the light in the image pickup step is 89 °~91 ° to the irradiating angle of the polarizer.
There is provided a kind of manufacture method of Polarizer according to another aspect of the present invention.The manufacture method includes：In polarizer
It is middle to form unpolarized portion；And the polarizer with unpolarized portion is checked by the inspection method.
There is provided a kind of check device in the unpolarized portion of polarizer according to another aspect of the invention.The check device has
It is standby：Light source portion, its to the polarizer with unpolarized portion side irradiation light；Image pickup part, that its shooting is projected from the light source portion,
The light of the polarizer is passed through；And image processing part, it is connected with the image pickup part, to shooting obtained figure by the image pickup part
As being analyzed and processed.
The effect of invention
In the present invention, from the side irradiation light of the polarizer with unpolarized portion, and its transmission is shot from opposite side
Light, shape, the characteristic in unpolarized portion etc. are evaluated based on resulting image., can be with excellent according to the inspection method of the present invention
Shape, the characteristic of different precision efficiently to evaluate unpolarized portion etc., desired characteristic is met as a result, will only can have
And the polarizer in the excellent unpolarized portion of form accuracy is equipped on image display device, therefore, it is possible to be efficiently obtained with excellent
Camera performance image display device.
Brief description of the drawings
Fig. 1 is the summary stereogram for the polarizer that can be suitably used in the inspection method of the present invention.
Fig. 2A is the synoptic diagram for an embodiment for illustrating the inspection method of the present invention.
Fig. 2 B are the synoptic diagrams for another embodiment for illustrating the inspection method of the present invention.
Fig. 3 is general bonding with the surface protective film with through hole of polarizer in the formation for illustrate unpolarized portion
Want stereogram.
Fig. 4 A are perspective cross-sectional slices that can be for the layered product of chemical decolorization processing.
Fig. 4 B are the synoptic diagrams of one of the forming method for illustrating the unpolarized portion using chemical decolorization processing.
Fig. 5 is the perspective cross-sectional slice for the Polarizer that can be obtained by the manufacture method of the present invention.
Description of reference numerals
10：Unpolarized portion；100：Polarizer；300：Polarizer；400：Check device；410：Light source portion；420：Image pickup part；
430：Polarization filter；440：Image processing part；500：Labelling apparatus.
Embodiment
[A. inspection methods]
The present invention relates to a kind of method checked the polarizer with unpolarized portion.The inspection method bag of the present invention
Include：Image pickup step, from the side irradiation light of the polarizer with unpolarized portion, shoots from opposite side and has passed through the polarizer
Light；And checking step, the unpolarized portion of the polarizer is checked based on the image.Below, the inspection method of the present invention is illustrated.
A-1. there is the polarizer in unpolarized portion
Fig. 1 is the summary stereogram for the polarizer that can be suitably used in the inspection method of the present invention.Polarizer 100 is
Strip, typically says, as shown in Figure 1 wound into rolls.In this manual, " strip " refers to relative to width
For the sufficiently long elongated shape of length, it may for example comprise length be width more than 10 times, preferably more than 20 times of elongated shape
Shape.Polarizer 100 has what is configured at a prescribed interval (that is, with defined pattern) on length direction and/or width
Unpolarized portion 10.The configuration pattern in unpolarized portion 10 can be suitably set according to purpose.Typically say, by polarizer
(for example, along its length and/or width cut-out, punching) 100 is cut for given size to be installed to the figure of given size
During as display device, unpolarized portion 10 is configured at position corresponding with the camera unit of the image display device.Thus, from one
In the case that individual strip polarizer 100 only cuts the polarizer (polarized light piece) of a size, unpolarized portion 10 can be such as Fig. 1
It is shown such, substantially equally spaced configured in length and width directions.If this structure, then can
Easily carry out coordinating the size of image display device that polarizer is cut into the control of given size, so as to improve finished product
Rate.Further, it is possible to suppress to cut the deviation of the position in the unpolarized portion in the polarized light piece of obtained monolithic.In addition, " in length
On direction and width substantially at equal intervals " refer on length direction at intervals of the interval at equal intervals and on width
For at equal intervals, the interval on length direction need not be equal with the interval on width.For example, between by length direction
Both can be L1=L2 or L1 ≠ L2 when being set to L1, the interval on width is set into L2.Long from one
In the case that strip polarizer 100 cuts the polarizer of multiple sizes, it can be changed according to the size for the polarizer to be cut
Interval of the unpolarized portion 10 on length direction and/or width.For example, unpolarized portion 10 can also be real in the longitudinal direction
Equally spaced configured, and configured in the direction of the width with different interval in matter, can also be in the longitudinal direction with not
Configured, and substantially equally spaced configured in the direction of the width with interval.On length direction or width with
In the case that different interval configures unpolarized portion, the interval in adjacent unpolarized portion both can be all different, can also only one
Divide (interval in specific adjacent unpolarized portion) different.Alternatively, it is also possible to provide multiple areas along the length direction of polarizer 100
Domain, interval of the unpolarized portion 10 on length direction and/or width is set by regional.In addition, above-mentioned polarized light piece
Refer to polarizer obtained from being cut to the polarizer of strip.In this manual, based on context, sometimes will be to length
Polarizer referred to as polarized light piece obtained from the polarizer of strip is cut.
As described above, polarizer 100 is set as strip in Fig. 1, but it is different from the illustrated example, in the inspection of the present invention
In checking method, even if being the polarizer of non-strip, the polarized light piece that is for example cut into given size can similarly use.Separately
Outside, polarizer can also only have a unpolarized portion.
The transmissivity (for example, the transmissivity made using the flash ranging of wavelength as 550nm at 23 DEG C) in unpolarized portion is preferably
More than 50%, more preferably more than 60%, more preferably more than 75%, particularly preferably more than 90%.If this
Transmissivity, then be able to ensure that as the desired transparency for unpolarized portion.As a result, polarizer is configured to it is unpolarized
In the case of portion is corresponding with the camera unit of image display device, the harmful effect to the photography property of video camera can be prevented.
Unpolarized portion 10 can be configured with predetermined pattern as described above, as long as also, can obtain above-mentioned expectation
Optical characteristics, it becomes possible to be any appropriate mode.In one embodiment, unpolarized portion is partly to decolourize and obtain
Decolouring portion.Specifically, be by the established part to polarizer decolourize formed by decolouring portion.For example can in decolouring portion
Enough irradiated by laser or be chemically treated (for example, acid treatment, alkali process or its combination) to be formed.In another embodiment,
Unpolarized portion is through hole (typically saying, the through hole of through-thickness insertion polarizer).Through hole can for example pass through
Machinery punching (for example, punching, the punching of Thomson knife, plotter, water jet) or the established part (example by removing polarizer
Such as, laser ablation or chemolysis) formed.
As long as the plan view shape in unpolarized portion 10 is not produced to the camera performance of the image display device using polarizer
Harmful effect, it becomes possible to using any appropriate shape.As concrete example, circular, ellipse, square, square can be included
Shape, rhombus.By be suitably set in it is described later B in the shape of the through hole of surface protective film that illustrates, can be formed
Unpolarized portion with desired plan view shape.
Typically say, polarizer 100 is made up of the resin film 20 comprising dichroic substance.Resin film 20 is, for example,
Polyvinyl alcohol resin (hereinafter referred to as " PVA systems resin ") film.
As above-mentioned dichroic substance, such as can include iodine, organic dyestuff.They can be used alone or by two
It is combined to use more than kind.Preferably use iodine.This is because, non-to be formed for example by using chemically treated decolouring
In the case of polarization portion, the iodo-complexes that resin film (polarizer) is included suitably is reduced, and is fitted therefore, it is possible to be formed to have
In the unpolarized portion of the characteristic used in camera unit.
Unpolarized portion is preferably decolouring portion, and the amount for more preferably making the unpolarized portion be dichroic substance is relatively low
Low concentration portion (specifically, compared to other positions, the low low concentration portion of the amount of dichroic substance).According to this knot
Structure, and mechanically (for example, the side mechanically removed by using the punching of Thomson knife, plotter, water jet etc.
Method) situation that forms unpolarized portion compares, the problem of can be with the qualities such as Crack prevention, layering (splitting), strike-through.Separately
Outside, the amount of dichroic substance in itself is low in low concentration portion, thus with using laser etc. by dichroic substance decomposition come shape
Situation into unpolarized portion is compared, and the transparency in unpolarized portion can be maintained well.
The amount of the dichroic substance in above-mentioned low concentration portion is preferably more preferably 0.5 weight % below 1.0 weight %
Hereinafter, more preferably below 0.2 weight %.As long as the amount of the dichroic substance in low concentration portion is in this scope,
Just fully it can assign the desired transparency to low concentration portion.For example, making the shooting in low concentration portion and image display device
In the case of machine portion is corresponding, from the viewpoint of both brightness and tone, very excellent photography property can be realized.It is another
Aspect, the lower limit of the amount of the dichroic substance in low concentration portion is usually below detection limits.In addition, being used as by iodine
, for example can be using the standard curve produced in advance using standard specimen, based on by glimmering in the case of dichroic substance
Light X-ray analysis and the X-ray intensity that determines obtain amount of iodine.
The difference of the amount of dichroic substance at the amount of the dichroic substance at other positions and low concentration portion is excellent
Elect as more than 0.5 weight %, more preferably more than 1 weight %.As long as the difference of amount is in this scope, it becomes possible to form tool
There is desired transparent low concentration portion.
The alkali metal in above-mentioned low concentration portion and/or the amount of alkaline-earth metal are preferably below 3.6 weight %, more preferably
Below 2.5 weight %, more preferably below 1.0 weight %, particularly preferably below 0.5 weight %.As long as low concentration portion
The alkali metal at place and/or the amount of alkaline-earth metal are in this scope, it becomes possible to maintain well by it is described later with it is alkaline
The shape (that is, the low concentration portion with excellent dimensional stability can be realized) in low concentration portion formed by the contact of solution.
For example can be using in advance using standard specimen and the standard curve that produce, based on being determined by x-ray fluorescence analysis
X-ray intensity obtain the amount.This amount can be by making to contact in the contact described later with alkaline solution
Alkali metal and/or alkaline-earth metal at portion reduce to realize.
As the PVA systems resin for forming above-mentioned PVA based resin films, any appropriate resin can be used.For example can
Include polyvinyl alcohol, ethylene-vinyl alcohol copolymer.Can be by the way that saponifying polyvinyl acetate be obtained into polyvinyl alcohol.Energy
Enough by the way that vinyl-vinyl acetate copolymer saponification is obtained into ethylene-vinyl alcohol copolymer.The saponification degree of PVA systems resin leads to
Often it is 85 moles of %~100 mole %, preferably 95.0 moles %~99.95 mole %, more preferably 99.0 moles %
~99.93 moles of %.Saponification degree can be obtained according to JIS K 6726-1994.By using the PVA systems tree of this saponification degree
Fat, can obtain the polarizer of excellent in te pins of durability.In the case where saponification degree is too high, there is the worry of gel.
The average degree of polymerization of PVA systems resin can suitably be selected according to purpose.Average degree of polymerization is usually 1000~
10000, preferably 1200~4500, more preferably 1500~4300.In addition, average degree of polymerization can be according to JIS K
6726-1994 is obtained.
Absorption is presented in polarizer (not including unpolarized portion) at some wavelength preferably in wavelength 380nm~780nm
Dichroism.The monomer transmissivity (Ts) of polarizer (not including unpolarized portion) is preferably more than 39%, more preferably 39.5% with
On, more preferably more than 40%, particularly preferably more than 40.5%.In addition, monomer transmissivity is limited to 50% in logic,
Practical upper limit is 46%.In addition, monomer transmissivity (Ts) be using JIS Z 8701 2 degree of visual fields (illuminant-C) determine it is laggard
Y value obtained from the correction of row visibility, for example, micro-spectral system (LambdaVision manufactures, LVmicro) can be used
Determine.The degree of polarization (not including unpolarized portion) of polarizer is preferably more than 99.9%, and more preferably more than 99.93%, enter one
Step is preferably more than 99.95%.
The thickness of polarizer (resin film) can be set as any appropriate value.Thickness is preferably less than 30 μm, more excellent
Elect less than 25 μm, particularly preferably more preferably less than 20 μm, less than 10 μm as.On the other hand, thickness is preferably 0.5 μm
More than, more preferably more than 1 μm.As long as this thickness, it becomes possible to obtain with excellent durability and optical characteristics
Polarizer.The thickness of polarizer (resin film) is thinner, then can form unpolarized portion more well.For example, passing through profit
In the case of forming unpolarized portion, destainer and resin can be shortened with chemically treated decolouring (details are described in B)
The time of contact of film (polarizer).Specifically, the higher unpolarized portion of transmissivity can be formed with the shorter time.
The thickness of the part contacted with above-mentioned destainer (for example, alkaline solution) can than other positions thickness
It is thin.This trend can become strong with making to uprise by the transmissivity in unpolarized portion obtained from decolouring.By making resin film
It is thinning, can reduce while high-transmission rate (be preferably more than 90%) in unpolarized portion is realized above-mentioned unpolarized portion with it is other
The thickness difference at position.In such manner, it is possible to prevent the undesirable condition that can be probably produced by thickness difference.As undesirable condition, for example can
Enough expect following situation etc.：When by the polarizer wound into rolls of strip, the thickness difference in unpolarized portion and other positions exists
It is transferred as winding vestige at the part of superposition；When Nian Jie with the other structures component such as protective film, due to unpolarized portion with
The thickness difference at other positions and produce bubble；Visual identity goes out the thickness difference in the final product.Think to prevent this bad shape
Condition may also contribute to the deviation of the quality of the polarizer finally used obtained from suppression is cut to the polarizer of strip.
The amount for thinking situation that transmissivity of this effect for example in unpolarized portion is more than 90% and/or dichroic substance is
It can become notable in the case of below 0.2 weight %.In addition, the transmissivity in unpolarized portion up to more than 90% may also contribute to suppression
Make the deviation of the quality of the polarizer finally used.Specifically, the situation in unpolarized portion is being formed by contact decolorization liquid
Under, when decolouring degree is weak, the transmissivity in resulting unpolarized portion easily produces deviation, but by make transmissivity for 90% with
Amount that is upper and/or making dichroic substance is below 0.2 weight % (by making decolouring degree strong), can stably control to decolourize
State.
In one embodiment, unpolarized portion is set as the thinner wall section thinner than other positions.For example, forming polarizer
The recess of the surface indentation of one surface side, to be set to thinner wall section.In this case, the thickness difference in unpolarized portion and other positions
(depth of recess) is, for example, more than 0.02 μm.On the other hand, thickness difference is preferably less than 2 μm, more preferably 1 μm with
Under.By it is described later decolouring come in the case of forming unpolarized portion (for example, unpolarized portion transmissivity be more than 90%
In the case that the amount of situation and/or dichroic substance is below 0.2 weight %) this thickness difference is formed sometimes, it is believed that
As long as the upper limit of thickness difference is in this scope, it becomes possible to suppress well because forming winding vestige rolled up and produced etc. by thickness
Undesirable condition caused by poor.As a result, can significantly inhibit the polarizer of strip is cut obtained from finally use
Polarizer quality deviation.In addition, " thickness difference (depth of recess) " refers to the deepest part of recess in this manual
Depth.
The recess of the surface indentation of an above-mentioned surface side is, for example, by making destainer only enter from a surface side of polarizer
Formed by row effect.Depth by the recess for making to be formed after decolorization is above range, can equably implement aftermentioned
Decolouring after processing.Additionally, it is believed that recess only can be formed in a surface side, thus, it is possible to prevent to produce because forming volume
The undesirable condition as caused by thickness difference such as winding vestige, so as to suppress the deviation of the quality of the polarizer finally used.
In the polarizer of strip, its absorption axis can be set as to arbitrarily appropriate direction according to purpose.Absorption axiss
Direction for example both can be that length direction can also be width.The polarizer for having absorption axiss in the longitudinal direction has
The excellent advantage of manufacture efficiency.In the direction of the width with absorption axiss polarizer have can be with so-called volume to volume (roll
To roll) mode and for example have the advantages that in the longitudinal direction slow axis phase-contrast film stacking.In an embodiment
In, absorption axiss are substantially parallel with length direction or width, and, in the mode parallel with length direction to the two of polarizer
End carries out slit processing.If this structure, then can by the basis of the end face of polarizer carry out cut operation come
It is easily manufactured by multiple polarizers with unpolarized portion and in suitable direction with absorption axiss.
Polarizer for image pickup step at least can also be formed with protective layer in its side.Specifically, can also be
Any appropriate protective layer (resin film) of one or both sides stacking of the polarizer.It is used as the concrete example of the resin film, energy
Enough include：The resin base material that is used in the making of the polarizer illustrated in B, the formation in unpolarized portion, surface protection are thin
Film；Protect polarizer and constitute protective film, phase-contrast film, separator of Polarizer etc. together.In one embodiment,
On the polarizer for image pickup step, Polarizer at least can also be set in its side stacked guard film.In addition, at this
In specification, polarizer protection film is represented when being only called protective film, with the surface protective film that illustrates in B (in operation
When temporary protection polarizer film) it is different.
A-2. image
(it is inclined in the case where being laminated with resin film from the polarizer with above-mentioned unpolarized portion in image pickup step
Shake the layered product of piece and resin film) side irradiation light, the light for having passed through the polarizer is shot from opposite side.It is saturating by shooting
Light is crossed, the picture in unpolarized portion can be obtained with high-contrast.In addition, the fine irregularities at the profile in unpolarized portion can be reduced
The picture in the unpolarized portion to obtain distinctness is influenceed, as a result, can enter with high accuracy to the shape and/or characteristic in unpolarized portion
Row is evaluated.
Fig. 2A and 2B are individually the synoptic diagram of an embodiment of the inspection method of the explanation present invention.As illustrated, inspection
Device 400 is looked into possess：The light source portion 410 configured opposite to each other across polarizer 100 (Polarizer 300) and image pickup part 420；Arbitrarily
Polarization filter 430；And be connected with image pickup part 420, for being carried out to shooting obtained image by image pickup part 420 at analysis
The image processing part 440 of reason.In illustrated example, polarizer 100 is with the protective film 110 in the stacking of its side and in opposite side
The protective film 120 of stacking constitutes Polarizer 300 together.
Any appropriate light source can be used to constitute light source portion 410.Light source both can be that white light source can also be single
Color light source.Light source can be set to any appropriate shape, for example, can be area source, line source, spot light or ring-shaped light source.Make
For the concrete example of light source, fluorescent lamp, Halogen lamp LED, metal halide lamp, LED etc. can be included.Light source portion 410 is to polarizer
Project light in the side (being the side of protective film 120 in illustrated example) of 100 (Polarizers 300).In addition it is also possible to illustrated example not
Together, in the case of being laminated with different resins film respectively in the both sides of polarizer, light source portion projects light to any one face of polarizer.
Light source portion 410 preferably from polarizer generally perpendicular direction to polarizer irradiation light.Irradiation of the light to polarizer
Angle (irradiating angle of the light to polarizer interarea) is preferably 89 °~91 °, more preferably 89.5 °~90.5 °.By being set to this
Kind of irradiating angle, can accurately check the thickness of the profile in unpolarized portion on the thickness direction of polarizer.
Typically say, image pickup part 420 is the video camera constituted using lens and imaging sensor.Can be by CCD type figure
As any one in sensor and CMOS-type imaging sensor is used as imaging sensor.
The pixel count of imaging sensor is preferably more than 2000dpi, more preferably 4000dpi~6000dpi.By using
Imaging sensor with this pixel count, can shoot the picture of high image quality, therefore, it is possible to unpolarized with excellent accuracy checking
The shape and/or characteristic in portion.
Image pickup part 420 is clapped from the opposite side (being the side of protective film 110 in illustrated example) of polarizer 100 (Polarizer 300)
Take the photograph the light for having passed through polarizer 100 (Polarizer 300).Resulting image is sent to image processing part 440 as electric signal.
It is substantially vertical with the interarea of polarizer that image pickup part is preferably arranged to its optical axis.Image optical axis excellent relative to the angle of polarizer interarea
Elect 89 °~91 °, more preferably 89.5 °~90.5 ° as.
In the embodiment shown in Fig. 2A, Polarization filter 430 absorbs the absorption axiss of direction of principal axis and polarizer 100 with it
The orthogonal mode in direction is configured between image pickup part 420 and polarizer 100 (Polarizer 300).According to the embodiment, pass through
The light (rectilinearly polarized light) of part beyond the unpolarized portion of polarizer 100 is absorbed by Polarization filter 430, on the other hand,
Polarization filter 430 can be passed through by having passed through a part for the light in unpolarized portion, therefore, it is possible to will transmit through Polarization filter 430
Light be substantially shot for the picture in unpolarized portion.In addition, in this manual, " orthogonal " also includes substantially orthogonal situation.
Here, " substantially orthogonal " includes 90 ° ± 3.0 ° of situation, more preferably preferably 90 ° ± 1.0 °, 90 ° ± 0.5 °.
In the embodiment shown in Fig. 2 B, Polarization filter 430 absorbs the absorption axiss of direction of principal axis and polarizer 100 with it
The orthogonal mode in direction is configured between light source portion 410 and polarizer 100 (Polarizer 300).According to the embodiment, from light source
Portion 410 passes through the light (rectilinearly polarized light) of Polarization filter 430 at the part beyond the unpolarized portion of polarizer 100 after projecting
Absorbed, on the other hand, can pass through unpolarized portion, therefore, it is possible to will transmit through the light of polarizer 100 be substantially shot for it is non-
The picture in polarization portion.
In addition, the use of Polarization filter 430 is arbitrary, it can also be obtained even if without using Polarization filter 430
In the case of the image for the inspection that unpolarized portion can be implemented in checking step, Polarization filter 430 can be omitted.
In one embodiment, the polarizer of strip is conveyed along its length on one side while being shot.Another
In embodiment, while the polarized light piece of the monolithic obtained after being cut using pipeline conveying is while shot.Pass through one side
Conveying can avoid the stopping of manufacturing line from maintaining manufacture efficiency while shot.Now, image pickup part fixation can both be come
Shot, can also coordinate polarizer transporting velocity along its length move while being shot.In addition, also can
It is enough to be moved in the width direction image pickup part while being shot.
It is strip and with being configured at a prescribed interval on length direction and/or width in polarizer
Unpolarized portion in the case of, can both obtain the image in all unpolarized portions, and can also only obtain a part of unpolarized portion
Image.For example, it is also possible to only arbitrarily selected or unpolarized portion according to specific regular Sexual behavior mode image.
A-3. check
In checking step, unpolarized portion is checked based on the image obtained by image pickup step.Specifically, using figure
The view data sent as electric signal from image pickup part 420, shape, characteristic to unpolarized portion are analyzed as processing unit 440
Deng being checked.As the concrete example of inspection project, can include unpolarized portion form accuracy (in the case of circle,
Roundness etc.), the thickness of profile, the steepness of profile, transmissivity etc..As defined in image processing part 440 is preferably able to be unsatisfactory for
The unpolarized portion of benchmark is detected as forming bad.
For example the analysis of above-mentioned view data can be carried out based on monochrome information.Specifically, in resulting image
In data (through light image data), the brightness in unpolarized portion is relatively high, and the brightness of other parts is low, therefore, it is possible to resulting
Contrast in view data sets threshold value, and the high brightness portion with the contrast higher than the threshold value is defined as into unpolarized portion.
In addition, can carry out 180 deciles to obtain center to the distance of each profile portion to the profile in identified unpolarized portion, by making
Maximum in 180 obtained range data subtracts the metewand being worth obtained from minimum value as roundness.For example,
In the case that resulting value is below defined be worth, the roundness in the unpolarized portion can be evaluated as good.Also, can also
Sub-elliptical as benchmark is obtained to profile 180 deciles of progress in unpolarized portion, each area obtained after 180 deciles are carried out
In domain using the maximum of sub-elliptical to the distance of actual profile as the thickness of profile metewand.For example, in gained
The maximum arrived be defined value below in the case of, the thickness of the profile in the unpolarized portion can be evaluated as good.Also, also
The mean flow rate of unpolarized portion and other parts (peripheral part in unpolarized portion) can be obtained, by the mean flow rate in unpolarized portion
100% is set to, the mean flow rate of other parts is set to 0%, when will carry out two-value with the brightness of 10% and 20% and turning to black and white
Unpolarized portion center to the distance of each profile obtained after 180 deciles maximum as the steepness of profile evaluation base
It is accurate.For example, in the case where resulting maximum is following for defined value, the steepness of the profile in the unpolarized portion can be commented
Valency is good.
On the transmissivity in unpolarized portion, can for example obtain the average brightness value in unpolarized portion, maximum brightness value and
Minimum luminance value, based on numerical value obtained from making maximum brightness value divided by average brightness value or makes minimum luminance value divided by average bright
Numerical value obtained from angle value evaluates the transmissivity in unpolarized portion.Specifically, polarization function, transmission are remained in unpolarized portion
In the case that rate is low, resulting value also step-down.
Check device 400 (substantially, image processing part 440) can be come to be connected with labelling apparatus 500 as needed.Work as inspection
When looking into device 400 (substantially, image processing part 440) and detecting that the formation in unpolarized portion is bad, sent not to labelling apparatus 500
Good detection signal.In the case where checking the polarizer of strip, labelling apparatus 500 is based on the signal, to being cut
It is to include being formed the region of the polarized light piece in bad unpolarized portion to be marked.Can be after cutting by the region marked work
Easily excluded for bad polarized light piece.On the other hand, the polarized light piece (monolithic Polarizer) of the monolithic after to cutting enters
In the case that row is checked, labelling apparatus 500 is based on the signal, and rower is entered to the polarized light piece including forming bad unpolarized portion
Note.As mark, the mark carried out using marker, laser labelling can be included.
[manufacture method of B. Polarizers]
The manufacture method of the polarizer with unpolarized portion of the present invention includes：Unpolarized portion is formed in polarizer；With
And the polarizer with unpolarized portion is checked by above-mentioned inspection method.
B-1. the forming step in unpolarized portion
Typically say, polarizer is by implementing molten to above-mentioned resin film (typically saying, PVA based resin films)
Swollen processing, stretch processing, dyeing processing, crosslinking Treatment, cleaning treatment, the drying process carried out using above-mentioned dichroic substance etc.
Obtained from various processing.When implementing various processing, resin film can also be formed at the resin bed on base material.In the feelings
Under condition, for example, polarizer can be made in the following manner：PVA systems resin solution is coated on resin base material, it is dried
To form PVA resins on resin base material, so as to obtain the layered product of resin base material and PVA resins；To the stacking
Body regard PVA resins as polarizer after being stretched and being dyed.Resulting resin base material/polarizer can directly be used
Layered product (i.e., it is possible to using resin base material as polarizer protective layer), can also resin base material/polarizer layered product
Polarizer surface bonding protective film, then peel off resin base material and form the layered product of polarizer/protective film.
Unpolarized portion is formed at the defined position of polarizer.The resin bed formation on base material is formed from polarizer
In the case of, typically say, the layered product of resin base material/polarizer or the layered product of polarizer/protective film are by for non-inclined
Shake the formation in portion.In the case of the resin film that polarizer is single, typically say, the stacking of protective film/polarizer
Body or polarizer are individually by the formation for unpolarized portion.Below, the formation in unpolarized portion is illustrated.As representative examples, say
One of bright situations below：In the layered product of protective film/polarizer, decolourized (below also referred to as by using chemically treated
For chemical decolorization processing) form unpolarized portion in polarizer.For other structures polarizer (for example, as single
The polarizer of resin film) same process can be also applied, this is apparent to those skilled in the art.This
Outside, it is not necessarily to be carried out after the completing of polarizer to form unpolarized portion by chemical decolorization processing.Specifically, can also
Resin film (is absorbed dichroism, remembered with A for example, being presented at some wavelength in wavelength 380nm~780nm
The monomer transmissivity and/or the resin film of degree of polarization of load) for forming unpolarized portion by using chemically treated decolouring,
Carry out remaining processing as needed afterwards, wherein, from for forming polarizer various processing (swelling treatment, stretch processing,
Dyeing processing, crosslinking Treatment, cleaning treatment, drying process etc.) at least the resin film is implemented at stretch processing and dyeing
Reason, it is the state that can be used as polarizer to make the resin film.
In chemical decolorization processing, as shown in figure 3, by volume to volume mode by with the insertion configured with defined pattern
The surface protective film in hole is bonded on the face of polarizer side of above-mentioned layered product." volume to volume " refers on one side in this manual
The film of web-like is conveyed while being bonded mutual length direction alignment.Surface protective film with through hole passes through
Any appropriate adhesive is adhered to polarizer in the way of it can peel off.It is thin by using the surface protection with through hole
Film, can carry out decolorization, therefore, it is possible to form unpolarized portion with very high manufacture efficiency by being impregnated in destainer.
In addition, for convenience, the surface protective film with through hole is referred to as into first surface protective film sometimes.
As described above, first surface protective film has the through hole configured with defined pattern.The position of through hole is set
Put corresponding with the position in the unpolarized portion of formation polarizer.Through hole can have any appropriate shape.The shape of through hole
Plan view shape with the unpolarized portion to be formed is corresponding.For example can by machinery punching (for example, punching, Thomson knife be punched,
Plotter, water jet) or remove the established part (for example, laser ablation or chemolysis) of film to form through hole.
As the formation material of above-mentioned first surface protective film, PET series tree can be included
It is the olefin-based resins such as cyclic olefine resin, polyethylene, the polypropylene such as the ester such as fat system resin, norbornene resin, polyamide-based
Resin, polycarbonate-based resin, their copolymer resin etc..It is preferred that ester system resin (is particularly polyethylene terephthalate
Ester system resin).This is because, spring rate is sufficiently high, for example, applying tension force when conveying and/or bonding is also not easy hair
The deformation of raw through hole.Typically say, the thickness of first surface protective film is 20 μm~250 μm, preferably 30 μm~150
μm。
Preferably, second surface protective film is bonded in the protective film side of above-mentioned layered product by volume to volume mode
Face on.Second surface protective film is any appropriate adhesive to be adhered to protective film by way of can peeling off.It is logical
Cross using second surface protective film, can suitably be protected in the decolorization using dipping above-mentioned layered product (polarizer/
Protective film).Second surface protective film can use in addition to being not provided with through hole remaining and first surface protective film
Same film.
Then, as illustrated in figures 4 a and 4b, the polarizer 100/ of first surface protective film 150/ with through hole 152 is protected
The layered product 200 of the second surface protective film 160 of film 120/ is protected for chemical decolorization processing.Typically say, chemical decolorization
Processing includes：Layered product 200 is set to be contacted with as the alkaline solution of destainer.In the case where iodine is used as into dichroic substance,
By making the desired position of resin film be contacted with alkaline solution, the amount of iodine of contact site can be easily reduced.
Contact of the layered product with alkaline solution can be carried out by any appropriate means.As representative examples, Neng Goulie
Enumerate and layered product is impregnated in alkaline solution or is applied to layered product or sprays alkaline solution.It is preferred that impregnating.This is because,
Layered product 200 can be conveyed as shown in Figure 4B while carrying out decolorization, therefore manufacture efficiency is substantially high.
In one embodiment, after above-mentioned alkaline solution is contacted with polarizer, by any appropriate means from inclined
The piece that shakes is removed.According to this embodiment, for example, the associated unpolarized portion of use with polarizer can be more reliably prevented from
Transmissivity reduction.As the concrete example of the minimizing technology of alkaline solution, cleaning, the wiping using rag etc. can be included
Remove, aspirate removal, natural drying, heat drying, air-supply dry, be dried under reduced pressure.It is preferred that cleaning alkaline solution.As in cleaning
The cleaning fluid used, for example, can include, the alcohol and their mixed solvent etc. such as water (pure water), methanol, ethanol.It is preferred that making
Use water.Wash number is not particularly limited, and can carry out repeatedly.By drying come in the case of removing alkaline solution, it is done
Dry temperature is, for example, 20 DEG C~100 DEG C.
Preferably, after being contacted with above-mentioned alkaline solution, resin film is made at the contact site for contacting alkaline solution
Contained alkali metal and/or alkaline-earth metal are reduced.By reducing alkali metal and/or alkaline-earth metal, size can be obtained steady
Qualitative excellent unpolarized portion.Specifically, under humidified ambient, it can also maintain as former state by being contacted and shape with alkaline solution
Into unpolarized portion shape.
As the method for above-mentioned reduction, following methods are preferably used：The contact site contacted with alkaline solution is set to contact acid
Solution.According to this method, it alkali metal and/or alkaline-earth metal is transferred to acid solution, contain to reduce it
Amount.Contact with acid solution can both be carried out after above-mentioned alkaline solution is removed, and can also be carried out without removing alkaline solution.
Any appropriate acid compound can be used as the acid compound that above-mentioned acid solution is included.It is used as acidity
Compound, for example, can include, the inorganic acid such as hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid, formic acid, oxalic acid, citric acid, acetic acid, benzene
Organic acids such as formic acid etc..The acid compound that acid solution is included is preferably inorganic acid, more preferably salt in them
Acid, sulfuric acid, nitric acid.These acid compounds both may be used singly or in combination of two or more to use.
As the solvent of acid solution, water, ethanol are preferably used.The concentration of acid solution is, for example, 0.01N~5N, preferably
For 0.05N~3N, more preferably 0.1N~2.5N.The liquid temperature of acid solution is, for example, 20 DEG C~50 DEG C.Acid solution
Time of contact is, for example, 5 seconds~5 points.In addition, the contact method of acid solution can be using the contact side with above-mentioned alkaline solution
The same method of method.In addition, acid solution can be removed from polarizer.The minimizing technology of acid solution can use with it is above-mentioned
The same method of the minimizing technology of alkaline solution.
In addition, surface protective film with alkaline solution for example after contacting, removal is stripped in any appropriate timing.
Illustrate that chemical decolorization is handled before this, but as described above, also being capable of shape by laser irradiation or machinery punching etc.
Into unpolarized portion.
B-2. the making step of Polarizer
Typically say, the manufacture method of Polarizer of the invention also includes：Come using the polarizer with unpolarized portion
Make the Polarizer with the structure as final products.As described above, being formed from the resin bed shape on base material in polarizer
In the case of, typically say, the polarizer for being formed with unpolarized portion is laminated with resin base material or protective film in its one side.
These layered products can be directly used as Polarizer.On the other hand, stripping can be passed through by these layered products further for this step
From other structures components such as resin base material, stacked guard film etc., to make any appropriate knot having as final products
The Polarizer of structure.Have a case that the polarizer in unpolarized portion by single resin film constitute similarly, by according to
Ways etc. stack gradually the other structures component such as protective film in its unilateral or both sides, can obtain with appointing as final products
The Polarizer of the appropriate structure of meaning.
Fig. 5 is the perspective cross-sectional slice for the Polarizer that can be gone out by this step preferred fabrication.Polarizer is same with polarizer
Ground can be strip.Protective film 110 of the Polarizer 300 with polarizer 100 and the both sides for being configured at polarizer 100,
120.In illustrated example, protective film is configured with the both sides of polarizer, but can also be only in one-sided configuration protective film.Make
For the formation material of protective film, for example, it can include, the cellulose-based resin such as cellulose diacetate, cellulose triacetate,
The olefin-based resins such as (methyl) acrylic resin, cyclic olefine resin, polypropylene, PET series resin
Deng ester system resin, polyamide series resin, polycarbonate-based resin, their copolymer resin etc..According to purpose, desired knot
Structure, can also omit the side in protective film 110,120.
Typically say, the thickness of protective film is 10 μm~100 μm.Typically say, protective film is by adhesive linkage
(specifically, bond layer, adhesive phase) is laminated in polarizer.Typically say, bond layer is by PVA systems bonding agent, work
Property energy ray-curable bonding agent is formed.Typically say, adhesive phase is formed by acrylic adhesives.In an implementation
In mode, the thickness of protective film is less than 80 μm.By using the protective film of this thickness, it can aid in resulting
The slimming of Polarizer.On the other hand, it is believed that be formed with recess in a surface side the protective film for making this thickness is configured at
Polarizer another surface side obtained from strip Polarizer wound into rolls in the case of, easily produce above-mentioned recess and exist
Protective film is transferred as the undesirable conditions caused by thickness difference such as winding vestige.In this embodiment, can be significantly
Obtain reducing the benefit of the thickness difference of recess.
From practical angle, there is Polarizer 300 adhesive phase 130 to be used as outermost layer.Typically say, adhesive
Layer 130 is the outermost layer of image display device side.It is interim equipped with the separator 132 that can be peeled off on adhesive phase 130, for
Adhesive phase is protected before actual use, and makes it possible to form volume.
According to purpose, Polarizer 300 can also also have any appropriate optical functional layer.It is used as the generation of optical functional layer
Table example, can include phase-contrast film (optical compensating film), surface-treated layer.For example, can be in protective film 120 with gluing
Configuration phase difference film (not shown) between mixture layer 130.Can be according to purpose, characteristic of image display device etc. come suitably
Set the optical characteristics of phase-contrast film (for example, phase difference, thickness direction phase difference in indicatrix, face).Phase difference
Film can also and be protective film.In this case, protective film 120 can be omitted.Conversely, protective film 120 can also
With optical compensation function (i.e., it is possible to have phase difference and thickness in appropriate indicatrix corresponding with purpose, face
Spend direction phase difference).
Surface-treated layer can be configured at the outside (not shown) of protective film 110.As the typical example of surface-treated layer,
Hard conating, anti-reflection layer, anti-dazzle photosphere can be included.The surface of protective film 110 can also be implemented at same surface
Manage to replace setting surface-treated layer.
Typically say, be length with the polarizer by unpolarized portion obtained from the forming step in above-mentioned unpolarized portion
Strip, therefore, it is possible to carry out the stacking of above-mentioned protective film, phase-contrast film etc. by so-called volume to volume mode.
B-3. the cutting step of Polarizer
The manufacture method of the Polarizer of the present invention can also include：The Polarizer of strip is cut into desired size.
It can be cut by cut-out, punching etc..Preferably, the Polarizer of strip is cut into having and figure to be mounted
As the corresponding size of display device, and have in position corresponding with its camera unit when being installed to image display device non-
Polarization portion.
B-4. the checking step of polarizer
The step of polarizer with unpolarized portion is detected by the inspection method described in A can form non-inclined
Any appropriate stage after portion of shaking is carried out.In the Overall Steps of the manufacture method of the present invention, only it can both carry out once
The checking step of the polarizer, can also carry out the checking step of the multiple polarizer.
In one embodiment, the checking step of the polarizer can be walked in the making of the Polarizer described in B-2
Any appropriate stage in rapid completes to carry out after the step.For example, it is also possible to make with the structure as final products
Polarizer, then carry out polarizer inspection.In addition, for example can also the layered product of protective film/polarizer polarization
The inspection of polarizer is carried out after piece side laminated phase-difference film and/or protective film, surface-treated layer, adhesive is then laminated
Layer etc..By carrying out the inspection of polarizer in this stage, the Polarizer of following strip can be obtained：With as final
The structure of product, and it can be cut into by the identification such as mark with the polarized light piece for forming bad unpolarized portion
The region of (Polarizer of monolithic).It is cut, can be easily excluded with formation in cutting step of the Polarizer after
The polarized light piece (Polarizer of monolithic) in bad unpolarized portion.
In another embodiment, the checking step of the polarizer can cut step in the Polarizer described in B-3
Carried out after rapid.By polarized light piece for checking, will can easily be excluded with forming bad obtained from cutting
Unpolarized portion polarized light piece (Polarizer of monolithic).
In yet another embodiment, the checking step of the polarizer can the unpolarized portion described in B-1 formation
Any appropriate stage in step completes to carry out after the step.Reference picture 4B illustrates to form non-by chemical decolorization processing
The concrete example of the situation in polarization portion, the checking step can be carried out with the next stage：What the contact processing with alkaline solution was completed
Stage (a)；The stage (b) that cleaning after being contacted with alkaline solution is completed；With for reducing alkali metal and/or alkali metal salt
The stage (c) that the contact of the treatment fluid (in figure 4b, acid solution) of amount is completed；And/or after being contacted with the treatment fluid
Cleaning complete stage (d).When carried out in this stage checking step and shape and/or characteristic be judged as it is bad non-
In the case that the ratio in polarization portion exceedes permissible range, suspect that processing before this there occurs undesirable condition.Therefore, by alkalescence
The various treatment conditions such as concentration, the dip time of solution, acid solution etc. are confirmed, adjusted, and can be found as early as possible bad
Situation is simultaneously released.As a result, the forming step in unpolarized portion can be controlled suitably, have therefore, it is possible to be favorably improved
The manufacture efficiency of the polarizer in unpolarized portion.
In the case where forming unpolarized portion by chemical decolorization processing as described in B-1, typically say,
Polarizer is to there is the shape of the surface protective film (also referred to as first surface protective film) with through hole in one side bonds
State is carried out chemical decolorization processing, after unpolarized portion is formed (for example, Fig. 4 B stage (d)) first surface protective film
It is stripped.Therefore, the polarizer for the checking step of the polarizer both can be to be laminated with first surface in side to protect thin
The state (Fig. 4 A) of film 150 or the first surface protective film 150 are stripped the state (not shown) of removal.On
Similarly, the polarizer for the checking step of polarizer both can be to be laminated with opposite side to second surface protective film
The state (Fig. 4 A) of two surface protective films 160 or the second surface protective film 160 are stripped the state of removal
(not shown).
[purposes of C. Polarizers]
The Polarizer obtained by the manufacture method described in B can be suitably used for image display device.Image shows
Showing device possesses the above-mentioned Polarizer for being cut into defined size.As image display device, for example, it can include liquid crystal
Display device, organic el device.Specifically, liquid crystal display device possesses including liquid crystal cell and is configured at the liquid crystal cell
One side or both sides above-mentioned Polarizer liquid crystal panel.Organic el device possesses is configured with having for above-mentioned Polarizer in visible side
Machine EL panels.The unpolarized portion that Polarizer is configured to polarizer is corresponding with the camera unit of image display device.
Industrial applicability
Such as being capable of the image with video camera such as portable phone, notebook type PC, tablet PC being manufactured smart phone
The inspection method of the present invention is suitably used during the polarizer that display device (liquid crystal display device, organic el device) possesses.
Claims (8)
1. a kind of inspection method, checks that this method includes to the polarizer with unpolarized portion：
Image pickup step, from the side irradiation light of the polarizer, the light for having passed through the polarizer is shot from opposite side；And
Checking step, the unpolarized portion of the polarizer is checked based on resulting image.
2. inspection method according to claim 1, it is characterised in that
The polarizer is strip, unpolarized with what is configured at a prescribed interval on length direction and/or width
Portion.
3. inspection method according to claim 2, it is characterised in that
The polarizer is conveyed along its length while carrying out the image pickup step on one side.
4. the inspection method according to any one of claims 1 to 3, it is characterised in that
The polarizer is made up of the resin film comprising dichroic substance,
The relatively low dichroic substance low concentration portion of the amount of in the resin film, dichroic substance is set as described non-
Polarization portion.
5. the inspection method according to any one of Claims 1 to 4, it is characterised in that
Matcoveredn is formed at least side of the polarizer for the image pickup step.
6. the inspection method according to any one of Claims 1 to 5, it is characterised in that
Light in the image pickup step is 89 °~91 ° to the irradiating angle of the polarizer.
7. a kind of manufacture method of Polarizer, including：
Unpolarized portion is formed in polarizer；And
The polarizer with unpolarized portion is examined by the inspection method according to any one of claim 1~6
Look into.
8. a kind of check device in the unpolarized portion of polarizer, possesses：
Light source portion, its to the polarizer with unpolarized portion side irradiation light；
Image pickup part, it shoots light being projected from the light source portion, having passed through the polarizer；And
Image processing part, it is connected with the image pickup part, is analyzed and processed to shooting obtained image by the image pickup part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311787608.9A CN117929404A (en) | 2015-09-30 | 2016-09-29 | Method for manufacturing polarizing plate and device for inspecting unpolarized portion of polarizing plate |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015195108A JP6807637B2 (en) | 2015-09-30 | 2015-09-30 | Polarizer inspection method and polarizing plate manufacturing method |
| JP2015-195108 | 2015-09-30 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311787608.9A Division CN117929404A (en) | 2015-09-30 | 2016-09-29 | Method for manufacturing polarizing plate and device for inspecting unpolarized portion of polarizing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106990117A true CN106990117A (en) | 2017-07-28 |
Family
ID=58492392
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610867936.3A Pending CN106990117A (en) | 2015-09-30 | 2016-09-29 | The inspection method of polarizer and the manufacture method of Polarizer |
| CN202311787608.9A Pending CN117929404A (en) | 2015-09-30 | 2016-09-29 | Method for manufacturing polarizing plate and device for inspecting unpolarized portion of polarizing plate |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311787608.9A Pending CN117929404A (en) | 2015-09-30 | 2016-09-29 | Method for manufacturing polarizing plate and device for inspecting unpolarized portion of polarizing plate |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6807637B2 (en) |
| KR (2) | KR20170038688A (en) |
| CN (2) | CN106990117A (en) |
Cited By (2)
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| CN109817092A (en) * | 2019-03-21 | 2019-05-28 | 京东方科技集团股份有限公司 | A kind of polaroid alignment device and alignment method |
| CN111054639A (en) * | 2019-12-18 | 2020-04-24 | 南京冠石科技股份有限公司 | Polarizing plate on-line measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102269201B1 (en) * | 2018-08-22 | 2021-06-25 | 주식회사 엘지화학 | Mask film and method for preparing polarizing plate using same |
| CN112718028B (en) * | 2020-12-24 | 2022-11-01 | 深圳先进技术研究院 | Light-operated liquid drop motion material and preparation method and application thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20170038688A (en) | 2017-04-07 |
| KR20240085234A (en) | 2024-06-14 |
| CN117929404A (en) | 2024-04-26 |
| JP2017068121A (en) | 2017-04-06 |
| JP6807637B2 (en) | 2021-01-06 |
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