CN102782536A - Method for manufacturing liquid crystal display device - Google Patents
Method for manufacturing liquid crystal display device Download PDFInfo
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- CN102782536A CN102782536A CN2011800106674A CN201180010667A CN102782536A CN 102782536 A CN102782536 A CN 102782536A CN 2011800106674 A CN2011800106674 A CN 2011800106674A CN 201180010667 A CN201180010667 A CN 201180010667A CN 102782536 A CN102782536 A CN 102782536A
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- Prior art keywords
- liquid crystal
- polarizing film
- light polarizing
- crystal board
- transporting velocity
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00634—Production of filters
- B29D11/00644—Production of filters polarizing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/0073—Optical laminates
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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
- 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
-
- 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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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- 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/54—Arrangements for reducing warping-twist
Abstract
Disclosed is a method for manufacturing a liquid crystal display device which suppresses curving of the liquid crystal display device. Bonding processes of bonding a long polarizing film onto a liquid crystal panel (2) while cutting off the polarizing film are respectively performed on both surfaces of the liquid crystal panel (2). Then, in at least either of the bonding processes, the liquid crystal panel (2) is conveyed faster than the polarizing film. Because this enables to apply a tension to the polarizing film being bonded to the liquid crystal panel (2), it is possible to correct the individual properties of a manufacturing device (10) which is used when performing the bonding processes (so-called the propensity of the device), so that the curving (warpage) of the liquid crystal panel (2) can be suppressed. That is, because it is possible to suppress the curving of the manufactured liquid crystal display device (1), the productivity and the yield of the final product can be increased (the defective fraction is reduced).
Description
Technical field
The present invention relates to light polarizing film is fitted to the manufacturing approach of the liquid crystal indicator that forms on the liquid crystal board.
Background technology
Now, the general manufacturing fits to the liquid crystal indicator that forms on the two sides of liquid crystal board with light polarizing film.And when fitting to light polarizing film on the liquid crystal board, the light polarizing film reel of implementing to be wound at the strip of drum unreels, Yi Bian and be cut to the length of regulation, Yi Bian fit to the manufacturing system on the liquid crystal board of single sheet.
For example, in patent documentation 1 and the patent documentation 2, recording and narrating and to fit on the two sides of liquid crystal board by the Polarizer that light polarizing film and diaphragm constitute, making the manufacturing system and the manufacturing installation of liquid crystal indicator.The liquid crystal indicator of manufacturing after modularization, again through various assembling procedures, is processed mobile communication machines such as subnotebook PC or portable phone, also has the various products (final products) of large-scale tv etc.
Patent documentation 1 Japanese publication " patent No. 4307510 (distribution on August 5th, 2009)
Patent documentation 2 Japanese publications " patent No. 4346971 (distribution on October 21st, 2009)
The expectation liquid crystal indicator does not have bending (warpage) in the whole viewing area of liquid crystal board (display frame whole).There is crooked liquid crystal indicator to judge, is unacceptable product, can not process product according to the grade of display frame.In addition, the bending of liquid crystal indicator (warpage) is because of not processing the back rectification, so there is crooked liquid crystal indicator to have to discard.
Yet; In above-mentioned patent documentation 1, the manufacturing system described in 2 and manufacturing installation; Special consideration is not done in liquid crystal indicator bending for suppressing manufacturing, that is to say, in existing manufacturing approach; When fitting to Polarizer on the liquid crystal board, do not take measure especially, therefore exist throughput rate or the yield rate that to avoid final products to reduce (unacceptable product increase) such problem for preventing that above-mentioned unacceptable product from producing.
Summary of the invention
The present invention makes just in view of the above-mentioned problems, and its fundamental purpose is to propose to suppress the manufacturing approach of the crooked liquid crystal indicator of the liquid crystal indicator of manufacturing.
The application inventor studies the crooked reason of liquid crystal indicator with keen determination; The characteristic (habit of so-called device) that the result finds out each used when fitting to light polarizing film on liquid crystal board manufacturing installation has relation with the bending of the liquid crystal indicator of manufacturing, up to accomplishing the present invention.
The manufacturing approach of liquid crystal indicator of the present invention; Be for addressing the above problem; The two sides of liquid crystal board is carried out cutting off the light polarizing film of strip respectively on one side; Fit to the manufacturing approach of the liquid crystal indicator of the bonding process on the liquid crystal board on one side, make the transporting velocity of the liquid crystal board in above-mentioned bonding process of the side come soon at least than the transporting velocity of light polarizing film.
Again, the manufacturing approach of liquid crystal indicator of the present invention makes the transporting velocity of the liquid crystal board in two sides' above-mentioned bonding process all come better soon than the transporting velocity of light polarizing film.
Again, the manufacturing approach of liquid crystal indicator of the present invention makes the transporting velocity of liquid crystal board better than the transporting velocity of light polarizing film fast 0.1 ~ 8%.
Again, the manufacturing approach of liquid crystal indicator of the present invention, better to above-mentioned light polarizing film applying diaphragm.
According to above-mentioned formation, because the transporting velocity of liquid crystal board is faster than the transporting velocity of light polarizing film, so because of the difference of above-mentioned transporting velocity, light polarizing film will be stretched in the time of on fitting to liquid crystal board, thereby can add tension force to this light polarizing film.Therefore, fit at least one side's of the light polarizing film on the two sides of liquid crystal board tension force through adjusting, can correct the characteristic (habit of so-called device) of each used when carrying out bonding process manufacturing installation, so can suppress the bending (warpage) of liquid crystal board.In other words, because of regulating the degree of crook of liquid crystal board, so can suppress the bending of the liquid crystal indicator of manufacturing through the light polarizing film that adds tension force.Thereby, the manufacturing approach of the crooked liquid crystal indicator of the liquid crystal indicator that can suppress manufacturing can be provided.
The effect of invention
Manufacturing approach according to liquid crystal indicator of the present invention; Because the transporting velocity of the liquid crystal board at least one side's the above-mentioned bonding process is come soon than the transporting velocity of light polarizing film; So can add tension force to the light polarizing film that fits on the liquid crystal board, can suppress the bending (warpage) of liquid crystal board.
Therefore, according to the manufacturing approach of liquid crystal indicator of the present invention,, increase (reduction disqualification rate) such effect so can reach the throughput rate or the yield rate that make final products owing to can suppress the bending of the liquid crystal indicator of manufacturing.
Other purposes of the present invention, feature and advantage will be fully aware of through following explanation.Again, strong point of the present invention will be through understanding with reference to the following explanation of accompanying drawing increasingly.
Description of drawings
Fig. 1 is the figure of an example of the manufacturing approach of explanation liquid crystal indicator of the present invention, is the front view (FV) that the summary formation of manufacturing installation is shown.
The practical implementation form
The manufacturing approach of liquid crystal indicator of the present invention; Being the manufacturing approach of the two sides of liquid crystal board being carried out fitting to while the light polarizing film of cutting off strip separately the liquid crystal indicator of the bonding process on the liquid crystal board, is to make the formation of the transporting velocity of the liquid crystal board at least one side's the above-mentioned bonding process faster than the transporting velocity of light polarizing film.
Among the present invention, so-called " bending ", the viewing area that is meant liquid crystal board is not in fact the state on plane.In other words, will judge that the crooked state of liquid crystal indicator that is judged to the unacceptable product degree is called " bending " according to the grade of display frame.Therefore, among the present invention, so-called " suppressing crooked ", and mean according to the grade of display frame and judge, the liquid crystal indicator bending that is judged to the unacceptable product degree is suppressed (make liquid crystal indicator smooth and be judged to be certified products).
For one embodiment of the present invention, explain as follows according to Fig. 1.But the present invention is not limited to this, can add in described scope that the form of various distortion implements.
[liquid crystal indicator]
Below explanation is through an example of the liquid crystal indicator formation of manufacturing approach manufacturing of the present invention.The liquid crystal indicator made from manufacturing approach of the present invention, layered polarization film and diaphragm in regular turn on the surface of liquid crystal board and the back side.
As liquid crystal board, use well-known liquid crystal board suitably.More particularly, as liquid crystal board, can enumerate substrate and liquid crystal layer well-known liquid crystal board that constitute, that the configuration oriented film forms between substrate and liquid crystal layer by a pair of glass substrate etc.
As light polarizing film, use well-known light polarizing film suitably.More particularly,, can enumerate the diaphragm of on the two sides of polarizer film, fitting, and on said protection film, be formed with the well-known light polarizing film of adhesive phase as light polarizing film.In the above-mentioned adhesive phase one when being used for fitting to stripping film (afterwards stating) on the light polarizing film, light polarizing film is fitted on the liquid crystal board and forms; In the above-mentioned adhesive phase another is to be used for diaphragm fitted to forming on the light polarizing film.And, constitute Polarizer by light polarizing film, diaphragm and adhesive phase.
As above-mentioned polarizer film; For example can enumerate the film that hydrophilic macromolecules such as partly-hydrolysed thing to PVA (polyvinyl alcohol (PVA)), part formalizing polyvinyl alcohol (PVA), ethene-vinyl acetate interpolymer, cellulose etc. constitute; Implement the processing of dyeing of pigments such as uniaxial tension and iodine element, implement the film after the processing such as form and aspect adjustment simultaneously.But the manufacturing approach of polarizer film is not limited to above-mentioned manufacturing approach, can use well-known polarizer film suitably.
As above-mentioned diaphragm; For example can enumerate TAC (triacetyl cellulose) film, cyclic olefin resins film, acetate fiber resin films such as diacetyl cellulose; Polyester resin films such as PET (polyethylene terephthalate), PEN, polybutylene terephthalate; Polycarbonate resin film, acryl resin film, well-known films such as acrylic resin film.
The thickness of light polarizing film, not special the qualification is probably more than 10 μ m, below the 300 μ m.In the no obstruction scope, light polarizing film also can comprise other layer except that above-mentioned three layers (protective seam, polarizer film, protective seams) in practicality.Specifically, for example light polarizing film also can comprise the adhesive phase (also can be the cement layer) that polarizer film and diaphragm are fitted.
Light polarizing film fits on the two sides of this liquid crystal board the whole viewing area of topped liquid crystal board (becoming all sites of display frame).
As diaphragm, use well-known diaphragm suitably.More particularly,, for example can enumerate mylar, pet film, polyethylene film, polypropylene film, well-known diaphragm such as plasticon as diaphragm.The thickness of said protection film, not special the qualification is probably more than 10 μ m, below the 100 μ m.
[manufacturing approach of liquid crystal indicator]
An example to the formation of the manufacturing installation of the manufacturing approach that adopts liquid crystal indicator of the present invention describes.As shown in Figure 1; The manufacturing installation 10 of the liquid crystal indicator of this embodiment; Be the manufacturing installation that adopts the so-called Roll to Panel mode of making liquid crystal indicator 1 continuously, this manufacturing installation is to comprise that hypomere (1 layer) part is that light polarizing film conveying mechanism 21 and epimere (2 layers) part are two sections structures of plate conveying mechanism 30.Thus, can save the space of manufacturing installation 10.
The light polarizing film reel 3a that light polarizing film conveying mechanism 21 will be rolled into the strip of cylinder shape rolls out, and is transported to sticking part 31, and the stripping film 3b of unwanted strip is reeled.
Above-mentioned light polarizing film reel 3a; It is the thin-film laminate that is constituted by light polarizing film, adhesive phase, diaphragm and stripping film 3b; On the face of the side that fits to liquid crystal board 2 of light polarizing film; Be fitted with strippable stripping film 3b through adhesive phase (also can be the cement layer), on above-mentioned the back side, be fitted with diaphragm through adhesive phase (also can be the cement layer).That is to say, through to stripping film 3b sequentially laminating adhesive layer, light polarizing film, adhesive phase and diaphragm form Polarizer, light polarizing film reel 3a is made up of Polarizer and stripping film 3b.As above-mentioned adhesive phase, there is not specific restriction, constitute through being coated with the well-known bonding agent (or cement) that is applied in this technical field.The thickness of sticker is as long as suitably set.
Above-mentioned stripping film (also claiming diaphragm or separation layer) 3b, the protection light polarizing film makes the surface (fitting to the face of liquid crystal board 2 one sides) of its light polarizing film before fitting to liquid crystal board 2 unlikely injured, peels off from light polarizing film light polarizing film being fitted to 2 last times of liquid crystal board.As stripping film 3b, available polyethylene resin for example, acrylic resin, polystyrene resin, films such as pet resin.The thickness of above-mentioned stripping film 3b is not special to be limited, probably more than 10 μ m, below the 100 μ m.Again, the width of light polarizing film reel 3a, promptly the width of light polarizing film is probably in 300 ~ 1500mm degree.
Light polarizing film conveying mechanism 21 comprises unreeling the 21a of portion, reeling end 21b, half cropper (not shown), edge of a knife 21c, and cylinder group 21d.The portion 21a of unreeling is provided with the light polarizing film reel 3a of strip, and it unreels this light polarizing film reel 3a.The portion 21a of unreeling has batched above-mentioned light polarizing film reel 3a, so that the absorption axes direction of light polarizing film is positioned on its throughput direction.Reeling end 21b batches the stripping film 3b of strip.In addition, also can possess each two of 21a of the portion of unreeling and reeling end 21b, to enable when the residual quantity of light polarizing film reel 3a tails off, switching to new light polarizing film reel at short notice.
Half cropper is arranged at the upstream side (unreeling the 21a of portion side) more than edge of a knife 21c, and 3a carries out half cut-off to the light polarizing film reel, cuts off light polarizing film, diaphragm and adhering agent layer.That is to say that half cropper does not cut off stripping film 3b and the light polarizing film (being Polarizer) of strip cut into the length of regulation.As half cropper, use cutter suitably, well-known croppers such as laser cropper.
Edge of a knife 21c peels off stripping film 3b on the light polarizing film that cuts into specified length.After stripping film 3b was stripped from, the adhesive phase that is formed between light polarizing film and the stripping film 3b remained on the light polarizing film side.
Plate conveying mechanism 30 comprises sticking part 31 and a plurality of conveying cylinders (not shown); Carry the liquid crystal board 2 of single sheet through driving above-mentioned conveying cylinder, the light polarizing film that by sticking part 31 above-mentioned light polarizing film conveying mechanism 21 is rolled out simultaneously fits on the surface of this liquid crystal board 2 (Polarizer of promptly fitting).In plate conveying mechanism 30, carry out the rectification (supply pure air) that flows downward from the top of liquid crystal board 2, thus, just can carry out the conveying and the applying of liquid crystal board 2 with stable status.
And plate conveying mechanism 30 is carried liquid crystal board 2 along light polarizing film conveying mechanism 21.That is, manufacturing installation 10 disposes each conveying mechanism, so that during from the top, the throughput direction center line of the liquid crystal board 2 that plate conveying mechanism 30 is carried is consistent with the center line of the throughput direction of the light polarizing film of light polarizing film conveying mechanism 21 conveyings.
Sticking part 31 is made up of a pair of clamping cylinder 31a-31a that forms clamping part, has the lip-deep function that light polarizing film (being Polarizer) is fitted to liquid crystal board 2 through adhesive phase.And; Make the whole viewing area (becoming the whole position of display frame) of the topped liquid crystal board 2 of the light polarizing film that is transported to sticking part 31; Carry out the contraposition (more specifically, carrying out the contraposition of the leading section of throughput direction) of liquid crystal board 2 and fit on the liquid crystal board 2.As clamping cylinder 31a-31a, use press bonding roller suitably, well-known clamping cylinder such as backer roll.In addition, clamping cylinder 31a-31a can regulate rotating speed arbitrarily, pressure (clamping pressure) and the temperature that can suitably regulate clamping part as required simultaneously.
And; In order light polarizing film (being Polarizer) to be fitted on the two sides of liquid crystal board 2; Manufacturing installation 10 possesses a pair of light polarizing film conveying mechanism 21; And possesses the rotation switching mechanism (the opposing party of light polarizing film conveying mechanism 21 is all not shown with the rotation switching mechanism among Fig. 1, has omitted) that makes liquid crystal board 2 rotation and upset.Above-mentioned rotation switching mechanism for example comprises absorption liquid crystal board 2 and makes the adsorbing mechanism of its rotation and with liquid crystal board 2 clampings and make the mechanical arm mechanism of its upset, liquid crystal board 2 rotations (rotations), 90 degree and upset (turning over) 180 are spent.Therefore; Liquid crystal board 2 is through fitting light polarizing film (being Polarizer) afterwards by the first light polarizing film conveying mechanism 21 on a surface; Be rotated and overturn by the rotation switching mechanism; Then, by the second light polarizing film conveying mechanism 21 light polarizing film (being Polarizer) of on another surface, fitting, just make liquid crystal indicator 1.
Again, manufacturing installation 10 comprises the control part (not shown) of above-mentioned each the conveying mechanism action of control.That is control part control: the transporting velocity of the liquid crystal board 2 in the plate conveying mechanism 30 (rotating speeds of a plurality of conveying cylinders); The transporting velocity of light polarizing film reel 3a (unreeling the rotating speed of portion and reeling end) between 21a of the portion that unreels in the light polarizing film conveying mechanism 21 and the reeling end 21b; Cut off the moment (setting of the length in the throughput direction of light polarizing film) of light polarizing film with half cropper; By the applying of the light polarizing film of 31 pairs of liquid crystal boards 2 of sticking part (contraposition of light polarizing film and liquid crystal board 2) constantly; And the rotational speed regulation of clamping cylinder 31a-31a, various creating conditions such as pressure (clamp pressure) adjusting and adjustment.And, specifically carry out which control for control part, import (indication) in advance by users such as operating personnel.
Manufacturing approach with the liquid crystal indicator 1 of the manufacturing installation 10 of above-mentioned formation is described.The manufacture process of liquid crystal indicator 1 mainly is by carrying operation, bonding process etc. to constitute.
At first, as carrying operation,, carry liquid crystal board 2 with certain speed through a plurality of conveying cylinders in the drive plate conveying mechanism 30.The clamping cylinder 31a-31a of sticking part 31 is driven with certain rotating speed rotation.This conveying operation is also carried out between the bonding process carrying out.That is, carry operation to run through whole manufacturing process.
Secondly; Rotating speed rotation through with regulation drives 21a of the portion that unreels and reeling end 21b in the light polarizing film conveying mechanism 21; Carry light polarizing film reel 3a with the transporting velocity different (promptly being slower than the transporting velocity of liquid crystal board 2), by half cropper the light polarizing film of strip is cut into the length of setting simultaneously with the transporting velocity of liquid crystal board 2.And, peel off stripping film 3b by edge of a knife 21c from light polarizing film, seek simultaneously the applying moment of light polarizing film (being Polarizer) on one side to liquid crystal board 2, Yi Bian promptly carry out the contraposition of light polarizing film and liquid crystal board 2, Yi Bian light polarizing film is transported to the clamping part of sticking part 31.Thereafter, by sticking part in plate conveying mechanism 30 31 add the pressure (clamp pressure) of regulation on one side, light polarizing film is fitted to (bonding process) on the liquid crystal board 2 on one side.Therefore, bonding process is the light polarizing film of carrying strip with the transporting velocity of the transporting velocity that is slower than liquid crystal board 2, while cut off the operation that fits to liquid crystal 2.That is, in the bonding process, set the transporting velocity of liquid crystal board 2 and come soon than the transporting velocity of light polarizing film.
Among the present invention, so-called " transporting velocity of light polarizing film " is meant the transporting velocity of the light polarizing film (being light polarizing film reel or stripping film) of being carried between the portion that unreels and the reeling end in the light polarizing film conveying mechanism.Therefore, " transporting velocity of light polarizing film " can come at random to regulate through the rotating speed that adjusting unreels portion and reeling end.The speed of the liquid crystal board when again, so-called " transporting velocity of liquid crystal board " is meant through sticking part.Therefore, " transporting velocity of liquid crystal board " can come at random to regulate through the rotating speed of regulating the clamping cylinder.Again, the transporting velocity of the liquid crystal board when carrying with a plurality of conveying cylinders, though hope with the present invention in " transporting velocity of liquid crystal board " equate, on manufacture process in the clog-free scope, also can be different with " transporting velocity of liquid crystal board " among the present invention.
With respect to the transporting velocity of liquid crystal board, set the speed of the transporting velocity of light polarizing film (being Polarizer) for which kind of degree (slowly), need only and experimentize in advance and determine.That is, make above-mentioned two kinds of mutual differences of transporting velocity to which kind of degree, be necessary the characteristic (habit of so-called device) according to each manufacturing installation, the material of liquid crystal board and light polarizing film, thickness etc. are set.Therefore, for example as long as be the experiment of changing the transporting velocity of light polarizing film several times under certain state through the transporting velocity that makes liquid crystal board, confirm the state (having or not bending) of the liquid crystal indicator of manufacturing, the transporting velocity of setting light polarizing film gets final product.More particularly, as long as it is faster 0.1 ~ 8% than the transporting velocity of light polarizing film usually to set the transporting velocity make liquid crystal board, sets and make fast 1 ~ 7% better, it is fast 3 ~ 6% better that setting makes.By users such as operating personnel the transporting velocity of the transporting velocity of the liquid crystal board of setting and light polarizing film is deposited in the for example built-in memory storage of above-mentioned control part just as data in advance; Therefore, control part is with the transporting velocity of the Data Control liquid crystal board of input and the transporting velocity of light polarizing film.
After this, as rotation upset operation, make liquid crystal board 2 rotations and the upset of the light polarizing film of having fitted on the face (Polarizer of promptly having fitted) by the rotation switching mechanism.Then, through carrying out the bonding process same, the light polarizing film of on another face of liquid crystal board 2, fitting (Polarizer of promptly fitting) with above-mentioned bonding process.Thus, just process the liquid crystal indicator 1 of this embodiment.
And; The manufacturing approach of liquid crystal indicator of the present invention; Among above-mentioned twice bonding process of applying light polarizing film on the two sides of liquid crystal board 2; At least make the transporting velocity of the liquid crystal board 2 in a side the bonding process come to such an extent that get final product soon,, make the transporting velocity of the liquid crystal board 2 in two sides' above-mentioned bonding process come better soon than the transporting velocity of light polarizing film in order to suppress the bending of liquid crystal board 2 more easily than the transporting velocity of light polarizing film.
When the transporting velocity of liquid crystal board 2 is faster than the transporting velocity of light polarizing film, because the difference of above-mentioned transporting velocity, in sticking part 31, fitting to liquid crystal board 2 last time light polarizing film will be stretched, thereby can add tension force to this light polarizing film.Therefore, fit at least one side's of the light polarizing film on the two sides of liquid crystal board 2 tension force through adjusting, the characteristic (habit of so-called device) that can correct each manufacturing installation 10 of using when carrying out bonding process therefore can suppress the bending (warpage) of liquid crystal board 2.That is, can regulate the degree of crook of liquid crystal board 2, therefore can suppress the bending of the liquid crystal indicator 1 of manufacturing with the light polarizing film that adds tension force.
That is, faster than the transporting velocity of light polarizing film according to the manufacturing approach of liquid crystal indicator of the present invention because of the transporting velocity of liquid crystal board 2, so can utilize the difference of above-mentioned transporting velocity, the light polarizing film that fits on the liquid crystal board 2 is added tension force.Therefore, fit at least one side's of the light polarizing film on the two sides of liquid crystal board 2 tension force through adjusting, the characteristic (habit of so-called device) that can correct each manufacturing installation 10 of using when carrying out bonding process therefore can suppress the bending (warpage) of liquid crystal board 2.That is, because of the bending of the liquid crystal indicator 1 that can suppress manufacturing, so can make the throughput rate of final products or yield rate increase (reduction disqualification rate).
[embodiment]
Manufacturing installation with possessing the described formation of Fig. 1 produces liquid crystal indicator.That is, light polarizing film has fitted on the liquid crystal board.
As liquid crystal board, with the length 718mm that sandwiches liquid crystal layer between a pair of glass substrate, width 408mm, the liquid crystal board of thickness 1.4mm.
As light polarizing film, the light polarizing film of the polarizer protecting film (diaphragm) of fit on the two sides of strip that constitutes with PVA (polyvinyl alcohol (PVA)) and the polarizer film of thickness 30 μ the m strip that constitutes by TAC (triacetyl cellulose) and thickness 80 μ m.And the adhesive phase of formation thickness 25 μ m is fitted on a face of this adhesive phase by the strip of PET (polyethylene terephthalate) formation and the stripping film of thickness 38 μ m on the two sides of above-mentioned polarizer protecting film.Again, on the another side of above-mentioned adhesive phase, the fit strip that constitutes by PET and the diaphragm of thickness 50 μ m.That is, through stripping film being stacked gradually adhesive phase, light polarizing film, thereby bonding agent and diaphragm formation Polarizer.Then, be 404mm through the above-mentioned film laminated body otch that is made up of Polarizer and stripping film is processed into width, make the light polarizing film reel of the strip that coils into the cylinder shape.
Then, the light polarizing film reel of the strip of making is set to the portion that unreels of the light polarizing film conveying mechanism in the manufacturing installation with the said formation of Fig. 1, after rolling out this light polarizing film reel, it is disconnected to carry out half by half cropper, and each length is 710mm.On one side with the edge of a knife peel off stripping film thereafter, on one side cut light polarizing film is fitted on the liquid crystal board.At this moment, the transporting velocity of liquid crystal board is the 18.0m/ branch, and the transporting velocity of light polarizing film is the 17.1m/ branch.That is, the transporting velocity of liquid crystal board is than the transporting velocity fast about 5.3% of light polarizing film.
And, measure the amount of warpage of the preceding liquid crystal board of applying light polarizing film and the amount of warpage of the liquid crystal board after the applying light polarizing film.That is, these liquid crystal boards are placed on the flat slabstone, measure the maximal clearance that produces between liquid crystal board and the slabstone with gap gauge.The amount of warpage of the liquid crystal board before its result, applying light polarizing film is 0.6mm, and the amount of warpage of the liquid crystal board after the applying light polarizing film is 0.0mm.That is, the bending of liquid crystal board has obtained inhibition.
[comparative example]
Except the transporting velocity of the transporting velocity of liquid crystal board and light polarizing film is 18.0m/ branch (make both transporting velocities identical), likewise fit light polarizing film to liquid crystal board with embodiment.And, measure the amount of warpage of the preceding liquid crystal board of applying light polarizing film and the amount of warpage of the liquid crystal board after the applying light polarizing film.The amount of warpage of the liquid crystal board before its result, applying light polarizing film is 0.6mm, and the amount of warpage of the liquid crystal board after the applying light polarizing film is 0.6mm.That is, fail to suppress the bending of liquid crystal board.
Again, the present invention is not limited to above-mentioned embodiment, in the scope of technical scheme, can do various changes.For example, the number of the cylinder group in the manufacturing installation, or comprise the configuration etc. of each conveying mechanism of the portion of unreeling or reeling end, be not limited to illustrated number or configuration.In addition, diaphragm can be as above-mentioned embodiment, before carrying out bonding process, fits on the light polarizing film and (has formed Polarizer in the light polarizing film reel stage), also can fit on the light polarizing film behind the bonding process carrying out.That is, also can be for after fitting on the liquid crystal board in light polarizing film, the formation of applying diaphragm on light polarizing film again.
Utilizability in the industry
According to the manufacturing approach of liquid crystal indicator of the present invention, can suppress the bending of the liquid crystal indicator of manufacturing, so can make throughput rate or the yield rate (reduction disqualification rate) that increases final products.Therefore, the manufacturing approach of liquid crystal indicator of the present invention can be widely used in the portable equipment of making subnotebook PC or portable phone etc., and in the various industry of large-scale tv etc.
The explanation of symbol
1 liquid crystal indicator
2 liquid crystal boards
3a light polarizing film reel
The 3b stripping film
10 manufacturing installations
21 light polarizing film conveying mechanisms
30 plate conveying mechanisms
31 sticking parts
Claims (4)
1. the manufacturing approach of a liquid crystal indicator fits to the manufacturing approach of the liquid crystal indicator of the bonding process on the liquid crystal board while be light polarizing film that the two sides of liquid crystal board is carried out cutting off strip separately with cut light polarizing film, it is characterized in that,
Make the transporting velocity of the liquid crystal board at least one side's the said bonding process faster than the transporting velocity of light polarizing film.
2. the manufacturing approach of liquid crystal indicator as claimed in claim 1 is characterized in that,
Make the transporting velocity of the liquid crystal board in two sides' the said bonding process faster than the transporting velocity of light polarizing film.
3. according to claim 1 or claim 2 the manufacturing approach of liquid crystal indicator is characterized in that the transporting velocity that makes liquid crystal board is than the transporting velocity of light polarizing film fast 0.1 ~ 8%.
4. like the manufacturing approach of each described liquid crystal indicator in the claim 1 to 3, it is characterized in that diaphragm is fitted on the said light polarizing film.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010038251 | 2010-02-24 | ||
| JP2010-038251 | 2010-02-24 | ||
| PCT/JP2011/053345 WO2011105273A1 (en) | 2010-02-24 | 2011-02-17 | Method for manufacturing liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102782536A true CN102782536A (en) | 2012-11-14 |
Family
ID=44506686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800106674A Pending CN102782536A (en) | 2010-02-24 | 2011-02-17 | Method for manufacturing liquid crystal display device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5613587B2 (en) |
| KR (1) | KR20130036183A (en) |
| CN (1) | CN102782536A (en) |
| TW (1) | TW201137461A (en) |
| WO (1) | WO2011105273A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107000325A (en) * | 2015-02-19 | 2017-08-01 | 住友化学株式会社 | The manufacture method of laminated optical film and the manufacture method of liquid crystal panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012014602A1 (en) * | 2010-07-29 | 2012-02-02 | コニカミノルタオプト株式会社 | Long roll of polarizing plate and optical display device manufacturing system |
| JP5580842B2 (en) * | 2012-02-29 | 2014-08-27 | 日東電工株式会社 | Optical display panel manufacturing method and optical display panel manufacturing system |
| JP5868734B2 (en) * | 2012-03-06 | 2016-02-24 | 日東電工株式会社 | Optical display panel continuous manufacturing method and optical display panel continuous manufacturing system |
| JP6101431B2 (en) * | 2012-04-16 | 2017-03-22 | 日東電工株式会社 | Optical display panel continuous manufacturing method and optical display panel continuous manufacturing system |
| KR102060541B1 (en) * | 2012-07-13 | 2019-12-31 | 삼성디스플레이 주식회사 | Method of manufacturing display panel |
| JP5782010B2 (en) * | 2012-11-09 | 2015-09-24 | 日東電工株式会社 | Optical display panel continuous manufacturing method and optical display panel continuous manufacturing system |
| KR20150093591A (en) * | 2014-02-07 | 2015-08-18 | 스미또모 가가꾸 가부시키가이샤 | Process for producing long polarizing film |
| JP2016130860A (en) * | 2016-02-10 | 2016-07-21 | 日東電工株式会社 | Continuous manufacturing method for optical display panel and continuous manufacturing system for optical display panel |
| JP2018025630A (en) * | 2016-08-09 | 2018-02-15 | 日東電工株式会社 | Polarizing plate |
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- 2011-02-17 JP JP2011032620A patent/JP5613587B2/en active Active
- 2011-02-17 CN CN2011800106674A patent/CN102782536A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20130036183A (en) | 2013-04-11 |
| JP5613587B2 (en) | 2014-10-29 |
| WO2011105273A1 (en) | 2011-09-01 |
| TW201137461A (en) | 2011-11-01 |
| JP2011197651A (en) | 2011-10-06 |
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Application publication date: 20121114 |