CN108508520A - The manufacturing method of polarization plates - Google Patents
The manufacturing method of polarization plates Download PDFInfo
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- CN108508520A CN108508520A CN201810158438.0A CN201810158438A CN108508520A CN 108508520 A CN108508520 A CN 108508520A CN 201810158438 A CN201810158438 A CN 201810158438A CN 108508520 A CN108508520 A CN 108508520A
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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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides the direction that can manufacture absorption axiss more accurately towards the manufacturing method of the polarization plates of the polarization plates of design direction and the manufacturing method of liquid crystal display panel.The manufacturing method manufacture of the polarization plates of one embodiment has absorption axiss (SA) polarization plates (1) comprising：First band-like polarization plates (10) are cut off at multiple positions, obtain the multiple second band-like polarization plates (12 with the width narrower than the width of the first band-like polarization plates by cut off operation in the direction of the width1~12N) (integer that N is 2 or more)；And manufacturing procedure, direction based on the absorption axiss in the second band-like polarization plates is processed each second band-like polarization plates and takes out polarization plates region (31), thus polarization plates are obtained, wherein, the polarization plates region is polarization plates corresponding with the polarization plates the to be manufactured region in the second band-like polarization plates, also, the design direction of the absorption axiss in the direction direction polarization plates to be manufactured of the absorption axiss in polarization plates region.
Description
Technical field
The present invention relates to the manufacturing method of polarization plates and the manufacturing methods of liquid crystal display panel.
Background technology
As polarization plates, it is known to there is absorption axiss and the axis of homology orthogonal with absorption axiss, absorb along absorption axis direction
The light of vibration and the linear polarization plate for making the light along transmission axis direction vibration penetrate.Such polarization plates are for example by will be band-like
Polarization plates are cut to defined size to manufacture (referring to patent document 1,2).Here, band-like polarization plates are for example by by protective film
Two sides or the single side of band-like polarizer membrane are laminated in manufacture.Band-like polarizer membrane is usually by making band-like material resin
Film is manufactured along long side direction uniaxial extension.In such manufacturing method, the side of absorption axiss possessed by band-like polarization plates
To parallel with the direction that the raw material resin film in uniaxial extension is extended.Also, due to the uniaxial extension of material resin film along
Long side direction carries out, it is contemplated that the long side direction for band-like polarization plates is consistent with axis direction is absorbed.Therefore, by band-like polarization
The long side direction of plate make as benchmark the absorption axiss in polarization plates in polarization plates towards the mode of prescribed direction from it is band-like partially
Vibration plate manufactures polarization plates.In the past, even if the polarization plates manufactured in this way are for example suitable for liquid crystal display device, in actual use
It is durable.
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 11-231129 bulletins
Patent document 2：Japanese Unexamined Patent Publication 11-2724 bulletins
By the long side direction of band-like polarization plates be envisioned for be absorption axiss direction come when manufacturing polarization plates, it is known that exist as
Lower situation：In fact, the absorption of the prescribed direction and actual polarization plates of absorption axiss required by the polarization plates as product
There is offset (such as 0.2 °~0.3 ° this degree) slightly between the direction of axis.Think that such offset is by will be at
The length of extending direction and band-like polarization plates when making material resin film uniaxial extension in the manufacture for the band-like polarization plates of polarization plates
Caused by the offset generated between edge direction.On the other hand, in recent years, such as in middle-size and small-size portable equipment display etc.
In, it is desirable that higher contrast.When contrast is got higher in display etc., the absorption required by the polarization plates as product
When producing offset slightly between the direction of the absorption axiss of the prescribed direction of axis and actual polarization plates, it is possible to produce by this
The reduction of image quality caused by offset.
Invention content
Then, the object of the present invention is to provide can manufacture the direction of absorption axiss more accurately towards design direction
The manufacturing method of the polarization plates of polarization plates and the manufacturing method of liquid crystal display panel.
Solution for solving the problem
Polarization plates of the manufacturing method manufacture with absorption axiss of the polarization plates of an aspect of of the present present invention, the system of the polarization plates
The method of making is characterised by comprising：Cut off operation exists the first band-like polarization plates in the cut off operation in the direction of the width
It is cut off at multiple positions, obtains the multiple second band-like polarization plates with the width narrower than the width of the first band-like polarization plates；With
And manufacturing procedure, in the manufacturing procedure, the direction based on the absorption axiss in the second band-like polarization plates is to each second band-like polarization
Plate is processed and takes out polarization plates region, thus obtains polarization plates, wherein polarization plates region is in the second band-like polarization plates
Region corresponding with the polarization plates to be manufactured, also, the direction direction polarization plates to be manufactured of the absorption axiss in polarization plates region
In absorption axiss design direction.
In the method, by the first band-like polarization plates, cut-out obtains having than the at multiple positions in the direction of the width
After second band-like polarization plates of the narrow width of width of one band-like polarization plates, polarization plates are manufactured from each second band-like polarization plates.
The width of each second band-like polarization plates is narrower than the width of the first band-like polarization plates, therefore each second band-like polarization plates
The absorption axis direction in width direction in the amplitude of fluctuation polarization plates more band-like than first of absorption axis direction in width direction
Amplitude of fluctuation is small.Also, each second band-like polarization plates are processed and take out the above-mentioned polarization in each second band-like polarization plates
Plate region manufactures polarization plates, therefore can manufacture absorption axiss more accurately towards the design required by the polarization plates as product
The polarization plates in direction.
In one embodiment, can also be, in above-mentioned cut off operation, by the first band-like polarization plates in web-like wind and
At the first blank volume in the direction of the width at multiple positions cut off, and with the multiple second band-like polarization plates respectively be in web-like roll up
The form that the second blank made of is rolled up obtains the multiple second band-like polarization plates.
In this case, by the first blank volume, the cut-out at multiple positions obtains the second blank volume in the direction of the width.
Thus, for example, the process that the multiple second band-like polarization plates obtained from the first band-like polarization plates are coiled into web-like can be omitted,
Polarization plates can be manufactured while from obtained each second blank volume the second band-like polarization plates of extraction.Thus, it is possible to efficiently
Manufacture polarization plates.
In one embodiment, can also be, in above-mentioned manufacturing procedure, in the multiple second band-like polarization plates at least
One the second band-like polarization plates carries out cutting off processing, to cut out polarization plates region from at least one second band-like polarization plates.
In this case, polarization plates can directly be manufactured from at least one second band-like polarization plates.Therefore, it is possible to efficient
Ground manufactures polarization plates.
In one embodiment, can also be that above-mentioned manufacturing procedure includes：Intermediate cuts out process, is cut in the intermediate
Go out in process, is cut out from the second band-like polarization plates of at least one of multiple second band-like polarization plates comprising the inclined of polarization plates region
Vibration plate intermediate；And intermediate manufacturing procedure, in the intermediate manufacturing procedure, to cutting out what process was cut out by intermediate
Polarization plates intermediate is processed, and thus takes out polarization plates region from polarization plates intermediate.
In this embodiment, polarization plates intermediate is cut out from at least one second band-like polarization plates, from the polarization plates
Mesosome manufactures polarization plates.
Can also be in above-mentioned intermediate manufacturing procedure, to be processed to the end face of polarization plates intermediate, thus from inclined
Vibration plate intermediate cuts out polarization plates region.
Due to cutting out polarization plates region from polarization plates intermediate, it is processed in the end face to polarization plates intermediate
When, it is easy long side side of the direction of absorption axiss caused by influence of modifying factor bowing etc. relative to the first band-like polarization plates
To offset etc..
In one embodiment, can also be that in above-mentioned cut off operation, at least three are obtained from the first band-like polarization plates
Second band-like polarization plates.
If obtaining at least three second band-like polarization plates from the first band-like polarization plates, in each second band-like polarization plates,
It can make the variation smaller of the absorption axis direction of width direction.Therefore, easy to manufacture absorption axiss are more accurately towards design direction
Polarization plates.
In one embodiment, can also be, in above-mentioned cut off operation, so that each second obtained band-like polarization plates
In the directions of absorption axiss the side in allowable range is in relative to the direction of the benchmark absorption axiss in each second band-like polarization plates
Formula, the shaft angle degrees of data of the distribution in the direction based on the absorption axiss in the width direction for indicating the first band-like polarization plates, by first
Band-like polarization plates are cut off at multiple positions in the direction of the width.
In this case, the absorption axis direction substantial alignment in each second band-like polarization plates can be made.Thus, it is easy system
Absorption axiss are made more accurately towards the polarization plates of design direction.
In one embodiment, the width of the first band-like polarization plates can be 1000mm or more.
When the width of the first band-like polarization plates is 1000mm or more, the influence of bowing is easy to become larger.Therefore, it is possible to
It is more accurately effective towards the above-mentioned manufacturing method of the polarization plates of design direction that manufacture, which absorbs axis direction,.
In one embodiment, the plan view shape of polarization plates is rectangle or square, cornerwise length of polarization plates
Or 350mm is hereinafter, usually 12.5mm or more, preferably 50mm or more.
There is the tendency for being used in the medium and small escope for requiring high contrast in such polarization plates.Therefore, it is possible to manufacture
It is more accurately effective towards the above-mentioned manufacturing method of the polarization plates of design direction to absorb axis direction.
In one embodiment, can also be that polarization plates are the polarization plates of the liquid crystal display panel of VA formulas or IPS formulas.
In the liquid crystal display device of VA formulas or IPS formulas, it can be performed image display with high contrast, therefore more exist
It is required that the tendency performed image display with high contrast.Therefore, it is possible to the axis that is absorbed direction accurately towards design direction
The above-mentioned manufacturing methods of polarization plates be effective.
The manufacture of the polarization plates of the one side of the manufacturing method of the liquid crystal display panel of another aspect of the present invention through the invention
Method manufactures polarization plates, and obtained polarization plates are fitted in liquid crystal cells, thus manufactures liquid crystal display panel.
The polarization plates one side using the present invention of liquid crystal cells is fitted in by the manufacturing method of above-mentioned liquid crystal display panel
The manufacturing methods of polarization plates manufacture.Therefore, in the polarization plates produced, axis direction is absorbed more accurately towards design side
To.Thus, in liquid crystal display panel, when showing image, it can realize the raising of image quality.
Invention effect
In accordance with the invention it is possible to provide the system that can manufacture the directions of absorption axiss towards the polarization plates of the polarization plates of design direction
Make method and the manufacturing method of liquid crystal display panel.
Description of the drawings
Fig. 1 is the structure for schematically showing the polarization plates manufactured by the manufacturing method of the polarization plates of an embodiment
The stereogram of polarization plates.
Fig. 2 is the schematic diagram for manufacturing the first of polarization plates shown in FIG. 1 the band-like polarization plates.
(a) of Fig. 3 will be to indicate made of winding the shown in Fig. 2 first band-like polarization plates in the manufacturing method of polarization plates
First blank volume cuts off the figure of the process to obtain multiple second blank volumes, (b) of Fig. 3 at multiple positions in the direction of the width
It is the figure for the state that the first blank volume is divided into multiple second blank volumes by process shown in Fig. 3 (a).
(a) of Fig. 4 is to indicate to go out in polarization plates from cut roll made of the second band-like polarization plates shown in winding Fig. 3 (b)
The intermediate of mesosome cuts out the schematic diagram of process, and (b) of Fig. 4 is to schematically show to cut by intermediate shown in Fig. 4 (a)
Go out the figure of polarization plates intermediate and the polarization plates region in polarization plates intermediate that process is cut out.
Fig. 5 is the knot for schematically showing the liquid crystal display panel manufactured by the manufacturing method of the liquid crystal display panel of an embodiment
The figure of structure.
Reference sign：
1 ... polarization plates, 10 ... first band-like polarization plates, 11 ... first blanks volume, 121~12N... the second band-like polarization plates,
131~13N... the second blank volume, 30 ... polarization plates intermediates, the end face of 30a~30d ... polarization plates intermediates, 31 ... polarization plates
Region, 3 ... liquid crystal display panels, 4 ... liquid crystal cells.
Specific implementation mode
Hereinafter, being explained with reference to embodiments of the present invention.Same reference numeral is marked to same element.Omit weight
Multiple explanation.The dimensional ratios of attached drawing may not be consistent with the dimensional ratios of explanation.In explanation, the directions such as "upper", "lower" are indicated
Term be the convenience that state based on ... shown in the drawings provides term.
(first embodiment)
The polarization plates 1 of the embodiment schematically shown in Fig. 1 have absorption axiss SAWith with absorption axiss SAOrthogonal is saturating
Penetrate axis ST.Polarization plates 1 are that have to absorb along absorption axiss SADirection vibration light and selectively make along axis of homology STDirection shakes
Dynamic light by linear polarization characteristic optical element.
Polarization plates 1 are for example suitable for liquid crystal display device.For example, polarization plates 1 fit in liquid crystal with crossed Nicol state
The two sides of unit can constitute a part for liquid crystal display panel.Plan view shape (shape from thickness direction) example of polarization plates 1
The quadrangle as rectangle shown in FIG. 1 or square.The absorption axiss S of polarization plates 1ADirection direction in polarization plates 1
Prescribed direction.
Absorption axiss S in polarization plates 1APrescribed direction be in the device (such as liquid crystal display device) for being applicable in polarization plates 1
Deng required absorption axiss SADirection, and be the absorption axiss S that is pre-designed in the design phase of polarization plates 1ADesign direction.
Above-mentioned prescribed direction be on the basis of one side of polarization plates 1 side and the side of predetermined angular θ is formed from the true edge
To.For example, in the case that polarization plates 1 plan view shape to be rectangular, it is specified that direction may be exemplified is advised on the basis of long side
Determine direction (direction i.e. parallel with long side), the direction of predetermined angular θ=45 ° and the diagonal etc. of angle, θ=0.In order to
For plan view shape it is rectangle stipulated that direction is the polarization plates 1 of long side direction if below without specified otherwise convenient for explanation
Embodiment illustrate.
In Fig. 1, due to the relationship of diagram, the thickness of polarization plates 1 is illustrated thicker.However, usually with polarization plates 1
The length of longer side and a shorter side in plan view shape is compared, and the thickness of polarization plates 1 is fully small, and polarization plates 1 are in membranaceous.
The size of polarization plates 1 is set according to the device for using polarization plates 1.About the size of polarization plates 1, e.g.
Cornerwise length is 12.5mm~350mm, the polarization plates i.e. with so-called 0.5 type~comparable length of this degree of 12 type.
In the case where polarization plates 1 are suitable for liquid crystal display device, the liquid crystal display panel for being fitted with polarization plates 1 is not particularly limited, such as
VA (Vertical Alignment) formula that can be carried out the image of high contrast and show, IPS (In-Place- can be illustrated
Switching) the liquid crystal display panel of the liquid crystal display panel and fine of formula.The liquid crystal display panel of fine for example refers to that pixel number is
The liquid crystal display panel of 200ppi (pixel per inch) or more.
Polarization plates 1 be with selectively make the light vibrated along a direction by the polarizer membrane 2a for being used as polarization layer
Laminated body.Polarizer membrane 2a is, for example, the resin film after making dichroism pigment be adsorbed in uniaxial extension and the film that is orientated.
Polarizer membrane 2a is not particularly limited as long as the resin film with linear polarization characteristic, as long as being used in well known straight line
The polarizer membrane of polarization plates.
Resin film possessed by polarizer membrane 2a is for example resin including polyvinyl alcohol (being also sometimes referred to as below " PVA ")
Film, vinylite film, Ethylene/vinyl acetate (hereinafter sometimes referred to as " EVA ") resin film, polyamide resin and
Polyester resin film.In general, using PVA resin films, especially from the viewpoint of the adsorptivity of dichroism pigment and orientation
PVA film.If hereinafter, without specified otherwise, resin film possessed by polarizer membrane 2a is illustrated with PVA film.
Dichroism pigment is orientated along its extending direction in the resin film after uniaxial extension and is adsorbed in the resin film.By
This, polarizer membrane 2a has the light for the differently- oriented directivity (i.e. molecular long axis direction) for absorbing dichroism pigment and makes and above-mentioned orientation side
Dichroism, that is, the polarization characteristic penetrated to the light in orthogonal direction.Dichroism pigment is, for example, iodine and dichroic organic dye.Partially
The thickness of piece film 2a of shaking is, for example, 1 μm~30 μm.
It is fitted with protective film 2b, 2c as protective layer for protecting polarizer membrane 2a on the two sides of polarizer membrane 2a.
Protective film 2b, 2c for example including triacetyl cellulose (below also referred to as " TAC ") mesentery, polyethylene terephthalate film,
Nylon membrane, polycarbonate membrane and polyethylene film etc..Usually using the small TAC mesenterys of optical anisotropy, especially TAC film.It protects
The thickness of cuticula 2b, 2c are, for example, 10 μm~200 μm.Protective film 2b, 2c are usually laminated in polarizing film across layer of adhesive material
Film 2a.
Polarization plates 1 are not limited to be laminated with the embodiment of protective film 2b, 2c in polarizer membrane 2a, polarizer membrane 2a's
A side in two sides is laminated with protective film (such as protective film 2b).
It can also be fitted with surface protection film (or protecting film) 2d protected to protective film 2b in protective film 2b.Surface
The thickness of protective film 2d is, for example, 30 μm~100 μm.The material of surface protection film 2d is, for example, polyethylene, polypropylene and polyester.
Furthermore, it is also possible to be bonded adhesive phase 2e in protective film 2c, adhesive phase 2e is used for will be as the polarization of product
Plate 1 fits in other components such as liquid crystal cells.The thickness of adhesive phase 2e is, for example, 3 μm~30 μm.Constitute adhesive phase 2e
Adhesive for example including acrylic adhesive, polyurethane series adhesive and silicone-based adhesive.
In the embodiment for being fitted with adhesive phase 2e, it can also be pasted in a manner of it can remove on adhesive phase 2e
Conjunction has isolation film 2f.Isolation film 2f is for until the polarization plates 1 as product prevent first band during being used as only
Other regions of shape polarization plates 10 and rubbish etc. are attached to the film of adhesive phase 2e.The thickness of isolation film 2f is, for example, 30 μm~
100μm。
Adhesive phase 2e and isolation film 2f is for example by fitting in the isolation film 2f for being formed with adhesive phase 2e on surface
Protective film 2c and be set on protective film 2c.
The the first band-like polarization plates 10 of polarization plates 1 as shown in Figure 2 manufacture.Fig. 2 is for manufacturing polarization plates shown in FIG. 1
The first band-like polarization plates schematic diagram.
The length of the long side direction of first band-like polarization plates 10 is, for example, 100m~3000m, the first band-like polarization plates volume 10
At web-like.First band-like polarization plates 10 are wound in the first band-like polarization plates volume made of winding off spindle i.e. core C and are referred to as the first base
Material volume 11.The width of first band-like polarization plates 10 is, for example, 1000mm or more.In general, the width of the first band-like polarization plates 10 is
3000mm or less.
First band-like polarization plates 10 have and 1 same layer of structure of polarization plates shown in FIG. 1.That is, the first band-like polarization plates
10 have polarizer membrane 2a, and the protection as protective layer for protecting polarizer membrane 2a is fitted on the two sides of polarizer membrane 2a
Film 2b, 2c.It can also be fitted with surface protection film 2d in protective film 2b.Alternatively, it is also possible to be formed with adhesive in protective film 2c
Layer 2e, is fitted with isolation film 2f on adhesive phase 2e in a manner of it can remove.
First band-like polarization plates 10 for example manufacture in the following way.Make band-like material resin film along its long side direction
Uniaxial extension (extension process).Material resin film does not extend the PVA film that orientation is not present for example,.Extension ratio is, for example,
4 times~5 times.The method of uniaxial extension can be any one of dry type uniaxial extension method and wet type uniaxial extension method.Single shaft prolongs
Stretch for example can make material resin by alonging long side direction additional tension while so that material resin film is contacted with hot-rolling
Film extends and realizes.
After making material resin film uniaxial extension, make the material resin film i.e. PVA film after uniaxial extension be impregnated in include
The aqueous solution (dyeing process) of dichroism pigment.So that dichroism pigment is adsorbed in PVA film as a result, and be orientated, to PVA
Film is dyed.In this way, obtaining polarizer membrane 2a by extension process and dyeing process.Therefore, above-mentioned extension process and dye
Color process constitutes polarizer membrane manufacturing process.
Then, it is bonded protective film 2b, 2c (protective film lamination process) respectively on the two sides of polarizer membrane 2a.Then, according to
The layer structure of the polarization plates 1 to be manufactured and laminate surface protective film 2d, adhesive phase 2e and isolation film 2f, thus obtain first band
Shape polarization plates 10.
In the manufacturing method of the first band-like polarization plates 10 illustrated by, dichroism pigment is made to be adsorbed in by by raw material tree
PVA film made of adipose membrane uniaxial extension is simultaneously orientated.However, it is also possible in the process for carrying out gas absorption quantity to dichroism pigment
In or gas absorption quantity after make material resin film uniaxial extension.
Polarizer membrane 2a possessed by first band-like polarization plates 10 is uniaxial along the long side direction of the first band-like polarization plates 10
Extend.Therefore, in the first band-like polarization plates 10, absorption axiss SAThe long side direction substantially one in direction and the first band-like polarization plates 10
It causes.
However, when having carried out uniaxial extension, bend somewhat occurs inwardly for the edge generated sometimes in width direction
Bowing.Therefore, as the example shown in figure 2, it is possible to exist in the width direction of the first band-like polarization plates 10, absorption axiss
SAThe case where direction is deviated from long side direction.Absorption axiss SAThe size for the deviation angle that direction is deviated from long side direction is, for example, 0.2 °
~0.3 ° or so.In fig. 2, the deviation angle is turgidly drawn.The absorption axiss S caused by bowingADirection is relative to long side
The deviation angle in direction is intended to continuously change in the width direction of the first band-like polarization plates 10.
In general, in the manufacturing process of the first band-like polarization plates 10, absorption axiss S as described above is detectedADirection is in width
The deviation angle deviated from long side direction on direction, and these deviation angles are obtained as the absorption axiss S in width directionAShaft angle degree
Data.Shaft angle degrees of data refers to the absorption axiss S in the first band-like polarization plates 10ADirection is relative to benchmark side as long side direction
To distribution of the inclination angle in the width direction of the first band-like polarization plates 10 information.
Absorption axiss S is being obtained like thisAShaft angle degrees of data in the case of, in the manufacture of the first band-like polarization plates 10,
Including being used to obtain absorption axiss SAShaft angle degrees of data absorption axis direction detection process.The detection process can for example made
Make polarizer membrane 2a later and carried out before the process that protective film 2b, 2c are fitted in polarizer membrane 2a, can also will protected
The process that cuticula 2b, 2c fit in polarizer membrane 2a carries out later.
Then, the method for illustrating to manufacture polarization plates 1 shown in FIG. 1 from the shown in Fig. 2 first band-like polarization plates 10.
It is multiple in the width direction of the first blank volume 11 as shown in (a) of Fig. 3 in the case where manufacturing polarization plates 1
Position is by 11 cut-out of the first blank volume, as shown in (b) of Fig. 3, obtains multiple second blank volumes 131、132、…、13N(N be 2 with
On integer) (cut off operation).In (a) of Fig. 3, the cut-out position of the first blank volume 11 is schematically shown with double dot dash line
It sets.In (a) of Fig. 3 and (b) of Fig. 3, instantiates and the first blank volume 11 is obtained into five the second bases in four position cut-outs
Material volume 131、132、133、134、135Embodiment.
It is cut for the cut-out of the first blank volume 11, such as by making cutting edge 20 be moved to successively (with reference to (a) of Fig. 3)
Disconnected position is simultaneously carried out at the same time cut-out.Or the multiple cutting edge 20 accordingly configured with off-position can also be utilized primary
Property cut off the first blank volume 11.The cutting edge 20 of (a) of Fig. 3 is schematically shown, and cutting edge 20 is, for example, circular saw.
The second blank volume 13 as obtained from the cut off operation for cutting off the first blank volume 11 in the direction of the width1、
132、…、13NIt is to be wound with the second band-like polarization plates 12 with the width narrower than the width of the first band-like polarization plates 101、
122、…、12NThe second band-like polarization coiled sheet.When being cut off to the first blank volume 11, the first band-like polarization can will be batched
Axis, that is, core C when plate 10 is cut off together, can not also be cut off core C and only be cut off the first band-like polarization plates 10.Fig. 3's
(b) in, the diagram of core C is omitted.
Cut-out width when being cut off to the first blank volume 11 is so as to roll up the second band of 11 segmentations from the first blank
Shape polarization plates 121~12NWidth it is narrower than the width of the first band-like polarization plates 10 and can be from the second band-like polarization plates 121~12N
The mode of polarization plates 1 is manufactured, can include the width in the region that become polarization plates 1.To become the region of polarization plates 1 can be
Aftermentioned polarization plates region 31.Cut off width i.e. the second blank volume 131~13NWidth can also be different from each other.
Cut-out width when being cut off to the first blank volume 11 is set as follows：Based on the first band-like polarization plates 10
Width direction on absorption axiss SAThe data of the angular distribution in direction, that is, shaft angle degrees of data, in each second band-like polarization plates 121~
12NIn make absorption axiss SADirection substantial alignment.
Absorption axiss SADirection substantial alignment for example refer to, as shown in (b) of Fig. 3, in each second band-like polarization plates 121
~12NIn, absorption axiss SADirection relative to the absorption axiss S as benchmarkA(hereinafter, also referred to as benchmark absorption axiss SA_B) direction
Angular distribution is in allowable range.Above-mentioned allowable range depends on the polarization plates 1 to be manufactured to determine, such as relative to
Benchmark absorption axiss SA_BIt is ± 0.1 ° or so.
For example, when being cut off to the first blank volume 11, it can will be in the width direction of the first band-like polarization plates 10
Absorption axiss S at multiple specified positionsADirection setting on the basis of absorption axiss SA_BDirection, by absorption axiss SADirection is relative to the base
Quasi- absorption axiss SA_BThe width in the region that the variation angular amplitude in direction is in allowable range is set as cutting off width.
The cut-out width of first blank volume 11 is with can be from the second band-like polarization plates 12 as described above1~12NManufacture
The mode of polarization plates 1 includes the width in the region that become polarization plates 1, therefore in setting benchmark absorption axiss SA_BDirection it is above-mentioned
At multiple specified positions, the distance between adjacent specified position is the width in the first blank volume 11 in aftermentioned polarization plates region 31
Spend the size (length for projecting in polarization plates region 31 in the direction of the width) on direction or more.
Obtaining multiple second blank volumes 131~13NLater, it is processed process, in the manufacturing procedure, to constituting the
Two blanks volume 131~13NThe second band-like polarization plates 121~12NIt is processed to manufacture the polarization plates 1 as product.About this
Manufacturing procedure, to roll up 13 from the second blank1It is illustrated in case of manufacture polarization plates 1.
As shown in (a) of Fig. 4, from the second blank volume 131Extract the second band-like polarization plates 12 out1, and cut out polarization plates intermediate
30 (intermediate cuts out process).Polarization plates intermediate 30 is cut out in the following way：On one side by the second band-like polarization plates 121Along
Extraction direction (long side direction) is carried, and basis will be from the second band-like polarization plates 12 on one side1The size of the polarization plates 1 of manufacture and utilize
Cutting edge 21 is in the second band-like polarization plates 121The specified position of long side direction cut.
Polarization plates intermediate 30 as being shown in dashed lines in (b) of Fig. 4, as long as comprising with polarization plates 1
The corresponding polarization plates region 31 of product size as size, can be comprising by aftermentioned end face processing cut
The size for the chipping allowance cut.
Then, intermediate manufacturing procedure is carried out to add polarization plates intermediate 30 in the intermediate manufacturing procedure
Work takes out polarization plates region 31 and obtains polarization plates 1.It refers to that will polarize to take out polarization plates region 31 from polarization plates intermediate 30
The region in addition to polarization plates region 31 in plate intermediate 30 detaches or removes from polarization plates region 31.
Hereinafter, illustrating an example i.e. end face manufacturing procedure of intermediate manufacturing procedure.In the manufacturing procedure of end face, to polarization plates
End face 30a, 30b, 30c, 30d of intermediate 30 are processed (end face processing), and polarization plates area is cut out from polarization plates intermediate 30
Thus domain 31 obtains the polarization plates 1 of product size.End face processing is, for example, to add to end face 30a~30d cuttings cut
Work also includes the attrition process being ground to end face 30a~30d in machining.
So that the absorption axiss S in polarization plates region 31ADirection becomes the absorption axiss S in polarization plates 1ADesign direction (regulation side
To) mode set polarization plates region 31.Thus, for example in the such as second band-like polarization plates 121Such absorption axiss SADirection relative to
Second band-like polarization plates 121Long side direction (direction shown in the single dotted broken line in (b) of Fig. 4) inclined feelings at an angle
Under condition, as shown in (b) of Fig. 4, polarization plates region 31 is tilted also relative to the long side direction of polarization plates intermediate 30.Cause
This, the second band-like polarization plates 121Width be at least wider than the width (short side direction in (a) of Fig. 4) in polarization plates region 31.
The absorption axiss S used to set above-mentioned polarization plates region 31ADirection be the second band-like polarization plates 121Suction
Receive axis SADirection, such as can be the second band-like polarization plates 121In benchmark absorption axiss SA_BDirection.As described above, base
Absorption axiss S in the width direction of the first band-like polarization plates 10AShaft angle degrees of data and so that absorption axiss SADirection is substantially right
Neat mode is cut off to make the second blank volume 13 from the first blank volume 111.Therefore, in order to set polarization plates region 31 and
The absorption axiss S usedADirection be known.
In the end face manufacturing procedure that end face 30a~30d to polarization plates intermediate 30 is processed, cutting edge pair is utilized
End face 30a~30d of polarization plates intermediate 30 is cut or is ground, and polarization plates region 31 is cut out from polarization plates intermediate 30,
Thus the polarization plates 1 as product are obtained.In the manufacturing procedure of end face, such as it can also utilize and multiple polarization plates intermediates are laminated
Laminated body made of 30 is processed uniformly to carry out the end face of multiple polarization plates intermediates 30.
It illustrates from the second blank volume 131The method for manufacturing polarization plates 1, but roll up 13 from other second blanks2、133、…、
13NThe case where manufacturing polarization plates 1 is also the same.From each second blank volume 131~13NThe size and shape of the polarization plates 1 of manufacture also may be used
With difference.Therefore, from 11 the second blank of segmentation volume 13 of the first blank volume1~13NWhen cut-out width be based on from the second blank roll up
131~13NThe size and shape of the polarization plates 1 of manufacture and the absorption axiss S in the first band-like polarization plates 10AShaft angle degrees of data
To set.
Constitute the first blank volume 11 the first band-like polarization plates 10 in, as illustrated in fig. 2 as, because of bowing
It influences and generates absorption axiss S in the direction of the widthAThe distribution in direction.For example, in the width direction of the first band-like polarization plates 10
Central portion, absorption axiss SADirection and the long side direction of the first band-like polarization plates 10 are substantially parallel, on the other hand, attached in edge
Closely, absorption axiss SADirection generated relative to the long side direction of the first band-like polarization plates 10 slightly offset (such as 0.2 °~
0.3°)。
In above-mentioned manufacturing method, by the first blank volume 11 in the direction of the width multiple positions cut off, make have than
Second band-like polarization plates 12 of the narrow width of width of the first band-like polarization plates 101~12N.Also, it is based on each second band-like polarization
Plate 121~12NIn absorption axiss SADirection, so that absorption axiss SARegulation side required by polarization plates 1 of the direction direction as product
Polarization plates 1 are manufactured to the mode of (design direction).
Second band-like polarization plates 121~12NWidth it is narrower than the width of the first band-like polarization plates 10 therefore each second band-like
Polarization plates 121~12NIn absorption axiss SAThe variation in direction is small.Also, from each second band-like polarization plates 121~12NIt is based respectively on
Absorption axiss SADirection manufactures polarization plates 1, therefore can manufacture absorption axiss SAMore precisely towards the polarization as product
Absorption axiss S required by plate 1APrescribed direction polarization plates 1.
In foregoing illustrative manufacturing method, the absorption axiss S in the width direction based on the first band-like polarization plates 10AAxis
Angle-data carries out the first blank volume 11 to set cut-out width when disk cutting.Specifically, using shaft angle degrees of data,
So that absorption axiss SAThe amplitude of fluctuation in direction is relative to multiple benchmark absorption axiss SA_BThe mode that direction is in allowable range is set
Cut off width.Therefore, each second band-like polarization plates 121~12NIn absorption axiss SADirection is easy substantial alignment.Thus, it is easy
Manufacture absorption axiss SAWith higher precision towards the polarization plates 1 of prescribed direction.
Second band-like polarization plates 121~12NIt is made as being wound with by carrying out disk cutting to the first blank volume 11
Second band-like polarization plates 121~12NState the second blank volume 131~13N.Therefore, it is possible to not via by the second band-like polarization
Plate 121~12NThe process of web-like is rewound into again and the second blank is used to roll up 131~13NTo manufacture polarization plates 1.Thus,
Polarization plates 1 can be made more efficiently.In addition, also need not be by the second band-like polarization plates 121~12NIt rewinds again coiled
The device etc. of shape, therefore can also realize the reduction of the manufacturing cost of polarization plates 1.
In above-mentioned manufacturing method, when cutting out polarization plates 1 from polarization plates intermediate 30, to make in polarization plates region 31
Absorption axiss SATowards the absorption axiss S in polarization plates 1AThe mode of design direction set polarization plates region 31.Thereby, it is possible to more may be used
By ground amendment absorption axiss S caused by bowingAOffset of the direction from the long side direction of the first band-like polarization plates 10.Its result
It is that can manufacture absorption axiss SADirection and the absorption axiss S required by polarization plates 1 as productAPrescribed direction between it is inclined
Move smaller polarization plates 1.
For suitable for can with the polarization plates 1 of the liquid crystal display panel of VA formulas and IPS formulas that high contrast performs image display,
In order to be performed image display with high contrast, it is desirable that absorption axiss SADesign direction (prescribed direction) in direction and polarization plates 1 with
High-precision is consistent.Therefore, it is possible to manufacture absorption axiss SADirection can more accurately polarization plates 1 consistent with design direction above-mentioned system
The method of making can be effectively used for the polarization plates of the liquid crystal display panel of manufacture VA formulas and IPS formulas.In the case where liquid crystal display panel is VA formulas,
It can also be ASV (Advanced Super View) formula.
Similarly, for the polarization plates suitable for the liquid crystal display panel that the image of fine is shown can be carried out, pursues and absorb
Axis SADirection and the prescribed direction required by the polarization plates 1 as product are consistent with high precision.Therefore, it is possible to manufacture absorption axiss SA
Direction can more accurately polarization plates 1 consistent with design direction above-mentioned manufacturing method can be effectively used for manufacture can carry out it is high-precision
Polarization plates used in the liquid crystal display panel that thin image is shown.
It is different from the large-scale TV that picture dimension is big, in 12 types (diagonal line length 350mm) middle-size and small-size portable equipment below
The tendency for watching picture from short distance in display etc., there are users, therefore it is required that high contrast.Therefore, it is possible to manufacture
Absorption axiss SADirection can more accurately polarization plates 1 consistent with design direction above-mentioned manufacturing method can be effectively used for manufacturing it is medium and small
Polarization plates used in type portable equipment display.
The plan view shape of polarization plates 1 be rectangle or square and cornerwise length be 12.5mm~350mm i.e. with
The corresponding length of size of this degree of type of so-called 0.5 type~12 so with more than 2 types (diagonal line length 50mm) corresponding length
In the embodiment of degree, polarization plates 1 are readily used for middle-size and small-size portable equipment display etc..Therefore, it is possible to manufacture absorption axiss SA
Direction can more accurately the polarization plates 1 consistent with design direction above-mentioned manufacturing method for plan view shape be rectangle or pros
Shape and cornerwise length are that the polarization plates of 12.5mm~350mm are effective.
In the width of the first band-like polarization plates 10 is the embodiment of 1000mm or more, there are above-mentioned bowings
Influence bigger tendency.Therefore, it is being 1000mm or more from the length of width and usually 3000mm below first is band-like partially
When vibration plate 10 manufactures polarization plates, absorption axiss SADirection be capable of the systems of more accurately above-mentioned polarization plates 1 consistent with design direction
The method of making is effective.
(second embodiment)
As second embodiment, the method that illustrates to manufacture liquid crystal display panel using polarization plates 1.Hereinafter, for the ease of saying
It is bright, in the polarization plates 1 of layer structure shown in Fig. 1, the polarization plates 1 after stripping isolation film 2f are also referred to as polarization plates 1A.
Schematically shown in Figure 5, liquid crystal display panel 3 is removed by being bonded from polarization plates 1 on the two sides of liquid crystal cells 4
Polarization plates 1A after isolation film 2f and constitute.As liquid crystal cells 4, it is for liquid crystal cells used in well known liquid crystal display panel
It can.For example, liquid crystal cells 4 can be disposed with transparent electrode, alignment films, liquid crystal, alignment films, transparent on the glass substrate
The liquid crystal cells of electrode, colour filter and glass substrate.The type of drive of liquid crystal cells 4 is, for example, VA formulas and IPS formulas.Liquid crystal cells
4 pixel number is, for example, 100ppi or more.
Liquid crystal display panel 3 for example manufactures in the following way.That is, passing through the system of the polarization plates illustrated in first embodiment
Method is made to manufacture polarization plates 1 (polarization plates manufacturing process).Then, polarization plates 1 are bonded to the two sides of liquid crystal cells 4 and obtain liquid
Crystal panel 3 (polarization plates bonding process).
In polarization plates bonding process, by the isolation film 2f strippings of each polarization plates 1, by the polarization plates after stripping isolation film 2f
1A fits in liquid crystal cells 4 via adhesive phase 2e.When being bonded polarization plates 1 to the two sides of liquid crystal cells 4, with two polarization plates
1 mode for becoming crossed Nicol state is bonded two polarization plates 1A to liquid crystal cells 4.
In the manufacturing method of above-mentioned liquid crystal display panel 3, the polarization plates 1 for becoming polarization plates 1A possessed by liquid crystal display panel 3 are logical
The manufacturing method that is illustrated in first embodiment is crossed to manufacture.Therefore, in polarization plates 1, absorption axiss SAMore accurately towards liquid
Absorption axiss S required by crystal panel 3APrescribed direction.Therefore, in the liquid crystal display panel 3 produced, when showing image, energy
Enough realize the raising of image quality.
In addition, the liquid crystal cells 4 used in the manufacture of liquid crystal display panel 3 are the liquid crystal of either one in VA formulas and IPS formulas
In the case of unit 4, it can be performed image display with high contrast.Therefore, by being applicable in absorption axiss SADirection more accurately
Towards the polarization plates 1A of the prescribed direction required by liquid crystal display panel 3, thus, it is possible to further realize image quality in liquid crystal display panel 3
It improves.Similarly, in the case where the pixel number of liquid crystal cells 4 is 200ppi or more, the image of fine can be shown.Cause
This, by being applicable in absorption axiss SADirection more accurately towards the polarization plates 1A of the prescribed direction required by liquid crystal display panel 3, thus
The raising of image quality can be further realized in liquid crystal display panel 3.
The polarization plates 1 manufactured by the manufacturing method of the polarization plates illustrated in first embodiment have protective film 2b,
At least one party in 2c and polarizer membrane 2a.But, in general, polarization plates 1 have adhesive phase 2e with to liquid crystal cells 4 into
Row fitting.The manufacturing method of the polarization plates illustrated in by first embodiment does not have adhesive come the polarization plates 1 manufactured
In the case of layer 2e, polarization plates 1 can be for example bonded by bonding agent with liquid crystal cells 4, can also be set in 4 side of liquid crystal cells
Set adhesive phase.
It this concludes the description of the various embodiments of the present invention, but various embodiments illustrated by being not limited to, it is intended that
Include whole changes in the meaning and range being equal shown in technical solution and with technical solution.
For example, in the manufacturing method of polarization plates 1 illustrated by first embodiment, end is implemented to polarization plates intermediate 30
Face processes to manufacture the polarization plates 1 as product.However, it is also possible to from the second band-like polarization plates 121~12NIt is middle by polarization plates area
Region other than domain 31 detaches from polarization plates region 31 or removes and directly take out.Such as it can also be to the second band-like polarization plates
121~12NImplement from the second band-like polarization plates 121~12NDirectly cut out the cutting off processing in polarization plates region 31.Progress as
The method of the cutting off processing of the case where cutting off processing for example includes the punching carried out by blade type and the laser that laser rays is utilized
Cutting.
During process, that is, intermediate when taking out polarization plates 1 from polarization plates intermediate 30 cuts out process, it is also not limited to profit
It is processed with the end face of machining (including attrition process), using the punching carried out by blade type and laser rays can also be passed through
The laser cutting of progress.In addition, from the second band-like polarization plates 131~13NIn process when cutting out polarization plates intermediate 30, example
Laser cutting can also such as be utilized.
From the second band-like polarization plates 121~12NThe method for manufacturing polarization plates 1 can also be directed to the second whole band-like polarizations
Plate 121~12NIt is not quite similar.For example, it can be from the second band-like polarization plates 121~12NAt least one of it is second band-like
Polarization plates directly cut out polarization plates region 31 to manufacture polarization plates 1, on the other hand, from the second band-like polarization plates 121~12NIn
The remaining second band-like polarization plates make polarization plates intermediate 30 after, take out polarization plates 1 from polarization plates intermediate 30.
For example, the central portion in the width direction of the first band-like polarization plates 10, absorption axiss SADirection is essentially long side
Direction.Therefore, the width of the second band-like polarization plates cut out from the central portion in the width direction of the first band-like polarization plates 10
It can be same as the width in polarization plates region 31.
In this case, to the multiple second band-like polarization plates 121~12NIt is processed to obtain the processing work of polarization plates 1
In sequence, for the multiple second band-like polarization plates 121~12NIn at least there is width of same size with polarization plates region 31
The second band-like polarization plates, it is band-like with the length pair second in the polarization plates region 31 of the long side direction in the second band-like polarization plates
Polarization plates are cut to manufacture polarization plates 1, for other multiple second band-like polarization plates 121~12NIn have than polarization
Second band-like polarization plates of the wide width of width in plate region 31, by method illustrated by before this come from the second band-like polarization plates
Manufacture polarization plates 1.
In the second band-like polarization plates 121~12NWidth direction on the polarization plates region 31 that sets be not limited to one.
It can be in the second band-like polarization plates 121~12NWidth direction on set multiple polarization plates regions 31.
In (a) of Fig. 3 and (b) of Fig. 3, instantiates and the first blank volume 11 is divided into five the second blank volumes 131~
135Embodiment, but the second blank volume number be not limited to five (i.e. N=5).As long as being made from the first blank volume 11 wide
Spend the multiple second blanks volume narrower than the width of the first blank volume 11.For example, it is also possible in the width of the first blank volume 11
The direction edges Shang Congliang cut off the first blank volume 11 with certain cut-out width respectively, thus in the width side of the first blank volume 11
Two the second blanks volume near two edges and second blank volume between them are made upwards.In this case, from
One the first blank volume 11 makes three the second blank volumes.
As being schematically shown in Fig. 2, in the width direction of the first band-like polarization plates 10, near two edges,
The influence of bowing is bigger than near central portion.Therefore, in the width direction of the first band-like polarization plates 10, near central portion
Absorption axiss SADirection and two edges near absorption axiss SADirection between offset become larger.
But, the absorption axiss S in the region near central portionAThe amplitude of fluctuation in direction and the region near two edges in
Absorption axiss SADirection amplitude of fluctuation it is small.Therefore, if the first band-like polarization plates 10 are divided into the width direction
Two edges nearby and these three neighbouring second band-like polarization plates of central portion, then can obtain the direction of the absorption axiss in width direction
Equable three the second band-like polarization plates.
The quantity for the second band-like polarization plates divided from the first band-like polarization plates 10 is more, i.e., the first band-like polarization plates 10
If place of incision in width direction is more, then the second band-like polarization plates of the axis direction alignment that can more be absorbed.From this
Viewpoint is set out, the second band-like polarization plates preferably five or more.
The multiple second band-like polarization plates 12 are being obtained from the first band-like polarization plates 101~12NIn the case of, to the first blank
Volume 11 carries out disk cutting and obtains the second blank volume 131~13N.However, it is also possible to band-like from 11 extraction first of the first blank volume
Polarization plates 10, in the width direction of the first band-like polarization plates 10 at multiple positions by the first band-like polarization plates 10 in cutting shape
Cut-out, to obtain the multiple second band-like polarization plates 121~12N。
In this case, in general, making the obtained second band-like polarization plates 121~12NThe of web-like is coiled into again
Two blanks volume 131~13N.In this way, having made the second blank volume 131~13NIn the case of, the second blank volume 131~13NSystem
The later process for making later process with (a) using Fig. 4 to illustrate is same.
For the absorption axiss S used in the case where setting polarization plates region 31ADirection decision, such as be not limited to base
Absorption axiss S in the first band-like polarization plates 10AShaft angle degrees of data determine, can also be in detection polarization plates intermediate 30
Absorption axiss SADirection and based on direction obtained from its testing result.Alternatively, the first band-like polarization plates 10 can also be based on
In empirical absorption axiss SAThe distribution in direction determines.
To each second band-like polarization plates 121~12NIn the case of being processed to manufacture polarization plates 1, such as can also be from
Each second band-like polarization plates 121~12NPolarization plates intermediate 30 is cut out, and it is inclined to be processed to manufacture to polarization plates intermediate 30
Vibration plate 1.
By the first band-like polarization plates 10 to the multiple second band-like polarization plates 121~12NCut-out width in the case of segmentation
The absorption axiss S that can be not based in the first band-like polarization plates 10AThe shaft angle degrees of data in direction obtains.By band-like inclined by first
Vibration plate 10 is divided into the multiple second band-like polarization plates 121~12N, to each second band-like polarization plates 121~12NWidth direction
On absorption axiss SAAbsorption axiss S in more band-like than first polarization plates of the amplitude of fluctuation in direction 10AThe amplitude of fluctuation in direction is small, therefore
Absorption axiss S can be manufacturedAWith higher precision towards the polarization plates 1 in desired direction.
In this case, when manufacturing the first band-like polarization plates 10, absorption axiss S can not also be detectedAShaft angle degrees of data.
In addition, from the second band-like polarization plates 121~12NIn the case of manufacturing polarization plates 1, the second band-like polarization plates 12 can also be detected1
~12NAbsorption axiss SADirection, and by its testing result be used as polarization plates region 31 absorption axiss SADirection.
The plan view shape of polarization plates 1 instantiates quadrangle as rectangle or square, but is not limited to quadrangle,
Can be round.
It is applicable in the case where type of drive of the liquid crystal display panel of polarization plates 1 is for example not limited to VA formulas and IPS formulas.For example, suitable
Type of drive with the liquid crystal display panel of polarization plates 1 can also be TN (Twisted Nematic) mode.
Claims (11)
1. a kind of manufacturing method of polarization plates manufactures the polarization plates with absorption axiss,
The manufacturing method of the polarization plates is characterised by comprising：
First band-like polarization plates are cut off at multiple positions, are obtained in the cut off operation by cut off operation in the direction of the width
The multiple second band-like polarization plates with the narrow width of the width than the described first band-like polarization plates；And
Manufacturing procedure, in the manufacturing procedure, the direction based on the absorption axiss in the described second band-like polarization plates is to each described
Two band-like polarization plates are processed and take out polarization plates region, thus obtain polarization plates, wherein the polarization plates region is described
Region corresponding with the polarization plates to be manufactured in second band-like polarization plates, also, the absorption axiss in the polarization plates region
Design direction of the direction towards the absorption axiss in the polarization plates to be manufactured.
2. the manufacturing method of polarization plates according to claim 1, wherein
In the cut off operation, by the described first band-like polarization plates in the first blank volume made of web-like winding in width direction
On at multiple positions cut off, and with the multiple second band-like polarization plates respectively be in web-like winding made of the second blank roll up
Form obtains the multiple second band-like polarization plates.
3. the manufacturing method of polarization plates according to claim 1 or 2, wherein
In the manufacturing procedure, the second band-like polarization plates of at least one of the multiple second band-like polarization plates are cut
Disconnected processing, to cut out the polarization plates region from least one second band-like polarization plates.
4. the manufacturing method of polarization plates according to claim 1 or 2, wherein
The manufacturing procedure includes：
Intermediate cuts out process, in the intermediate cuts out process, from least one of the multiple second band-like polarization plates
Second band-like polarization plates cut out the polarization plates intermediate for including the polarization plates region；And
Intermediate manufacturing procedure, in the intermediate manufacturing procedure, to by the intermediate cut out that process cuts out it is described partially
Vibration plate intermediate is processed, and thus takes out the polarization plates region from the polarization plates intermediate.
5. the manufacturing method of polarization plates according to claim 4, wherein
In the intermediate manufacturing procedure, the end face of the polarization plates intermediate is processed, thus from the polarization plates
Intermediate cuts out the polarization plates region.
6. the manufacturing method of polarization plates according to any one of claim 1 to 5, wherein
In the cut off operation, at least three second band-like polarization plates are obtained from the described first band-like polarization plates.
7. the manufacturing method of polarization plates according to any one of claim 1 to 6, wherein
In the cut off operation, so that the direction of the absorption axiss in obtained each second band-like polarization plates is relative to each
The direction of benchmark absorption axiss in the second band-like polarization plates is in the mode in allowable range, based on the expression first band
The shaft angle degrees of data of the distribution in the direction of the absorption axiss in the width direction of shape polarization plates, by the described first band-like polarization plates in width
It spends on direction and is cut off at multiple positions.
8. the manufacturing method of polarization plates according to any one of claim 1 to 7, wherein
The width of the first band-like polarization plates is 1000mm or more.
9. the manufacturing method of polarization plates according to any one of claim 1 to 8, wherein
The plan view shape of the polarization plates be rectangle or square,
Cornerwise length of the polarization plates is 350mm or less.
10. the manufacturing method of polarization plates according to any one of claim 1 to 9, wherein
The polarization plates are the polarization plates of the liquid crystal display panel of VA formulas or IPS formulas.
11. a kind of manufacturing method of liquid crystal display panel, which is characterized in that
Polarization plates, and the polarization that will be obtained are manufactured by the manufacturing method of the polarization plates described in any one of claims 1 to 10
Plate fits in liquid crystal cells, thus manufactures liquid crystal display panel.
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| JP2017-036914 | 2017-02-28 | ||
| JP2017036914A JP7018711B2 (en) | 2017-02-28 | 2017-02-28 | Method for manufacturing polarizing plate |
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| JP (1) | JP7018711B2 (en) |
| KR (1) | KR102584064B1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI745550B (en) | 2021-11-11 |
| KR20180099526A (en) | 2018-09-05 |
| KR102584064B1 (en) | 2023-09-27 |
| TW201837560A (en) | 2018-10-16 |
| JP2018141906A (en) | 2018-09-13 |
| JP7018711B2 (en) | 2022-02-14 |
| CN108508520B (en) | 2022-10-14 |
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