CN103085438B - Optical sheet applying method, device and the adhesive sheet used thereof - Google Patents

Optical sheet applying method, device and the adhesive sheet used thereof Download PDF

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Publication number
CN103085438B
CN103085438B CN201210430963.6A CN201210430963A CN103085438B CN 103085438 B CN103085438 B CN 103085438B CN 201210430963 A CN201210430963 A CN 201210430963A CN 103085438 B CN103085438 B CN 103085438B
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mentioned
optical sheet
region
sheet
adhesive sheet
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CN103085438A (en
Inventor
世良贤二
世古畅哉
松崎忠弘
石井宪和
石川雄作
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Tianma Japan Ltd
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NLT Technologeies Ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The adhesive sheet that the invention provides a kind of optical sheet applying method, device and use, when optical sheet front as bi-convex lens sheet with fine irregularities utilizes curvature head to fit on substrate, can prevent the bonding force because of optical sheet holding surface from mentioning substrate with the rising of the terminal part of optical sheet holding surface.Adhesive sheet (30) is installed to the optical sheet holding surface of curvature head (20), adhesive sheet has: the 1st region (30a), has the bonding force that can keep optical sheet; With the 2nd region (30b), there is the bonding force more weak than the bonding force in the 1st region.Make the front of optical sheet (10) bonding and after keeping (temporary fixed) to the 1st region of adhesive sheet, make the back side integral adhesive of optical sheet to substrate (50).Then, by optical sheet from the operation that optical sheet holding surface is isolated, make the 2nd region being arranged on the adhesive sheet in optical sheet holding surface relative with substrate making curvature head rotate further.

Description

Optical sheet applying method, device and the adhesive sheet used thereof
Technical field
The present invention relates to and use adhesive sheet optical sheet to be fitted to technology on the substrates such as liquid crystal panel, furtherly, the adhesive sheet that can will have trickle concavo-convex optical sheet in front fit to optical sheet applying method on substrate, device and be applicable to this optical sheet applying method, device as such as bi-convex lens sheet is related to.
Background technology
In recent years, develop the optical thin film such as Polarizer, lens, sheet (below these being referred to as optical sheet) are fitted to method glass substrate making the various devices such as thin display panel.The technology on glass substrate of being fitted to by Polarizer is widely used when manufacturing liquid crystal panel etc., but carrys out additional several functions owing to considering by multiple optical sheet of fitting, and therefore, also develops the technology using the laminating of multiple optical sheet outside this.
Such as, in Japanese Patent No. 3004532 publication (patent document 1), " apparatus for film adhesion used for liquid crystal display element " for being pasted by the film used for liquid crystal display element with layer of adhesive material on substrate is disclosed.The feature of this device is, be provided with supporting mechanism, it has the flexure plane of film opposite face protrusion in order to support film used for liquid crystal display element, and the mode being positioned at outside with above-mentioned layer of adhesive material is abutted along the above-mentioned film that above-mentioned flexure plane is temporary fixed in the mode that the end edge portion of the end edge portion with aforesaid substrate that make above-mentioned film is consistent, when above-mentioned film being pasted aforesaid substrate, it is rotatable, and the turnover of following aforesaid substrate is moved and pastes along aforesaid substrate while rotary push.In addition, in patent document 1, film used for liquid crystal display element is such as Polarizer, AR(antireflection) film, AG(anti-dazzle) macromolecule membrane such as film, reflective film and ultraviolet radiation absorption film.
In the device of patent document 1, such as, when pasting Polarizer, can to rotate around a rotating shaft and the Polarizer supporter (curvature head) with the flexure plane of convex uses as above-mentioned supporting mechanism.Above-mentioned flexure plane is formed the multiple suction holes be connected with vavuum pump, keeps (temporary fixed) on above-mentioned flexure plane Polarizer by vacuum suction.
First, by vacuum suction, Polarizer is temporarily anchored to precalculated position on the flexure plane of Polarizer supporter in the mode making its layer of adhesive material and be in outside.Now, Polarizer supporter is rotated, so that it is upper to make its flexure plane arrive.And, in this condition, peel the protective film that covers above-mentioned layer of adhesive material and expose above-mentioned layer of adhesive material.
On the other hand, liquid crystal cells (substrate) transmits towards Polarizer supporter in the horizontal direction with the state be fixed on liquid crystal cells supporter, arrives the precalculated position of the below of Polarizer supporter.
Next, make to keep the Polarizer supporter of (temporary fixed) Polarizer to decline by vacuum suction, make it rotate around above-mentioned rotating shaft simultaneously, and the Polarizer of maintenance ora terminalis is abutted with a corresponding ora terminalis of liquid crystal cells (substrate).And, make Polarizer supporter be in the state that can rotate freely, then while this abutting state of maintenance, liquid crystal cells supporter is moved horizontally.Thereby, it is possible to make Polarizer supporter and the relative movement of liquid crystal cells supporter while applying certain pressing force to Polarizer.
During this relative movement, keep the bonding force that (temporary fixed) Polarizer on Polarizer supporter is had by its layer of adhesive material, Polarizer supporter is left from the part connected with glass substrate, finally follow moving horizontally of liquid crystal cells supporter, its overall stickup on liquid crystal cell.Polarizer leaves Polarizer supporter like this and moves on liquid crystal cells.This is because, compare the confining force of the Polarizer based on vacuum suction, the bonding force of the bond layer of Polarizer is set stronger.
In the device of patent document 1, due to such as above-mentioned, Polarizer is fitted to liquid crystal cells, therefore can not produce on Polarizer internal modification and pressing uneven and can be good laminating (with reference to claim 1, paragraph 0026 ~ 0041 and Fig. 1 ~ 3).
In addition, as related background art, exist disclosed in Japanese Unexamined Patent Publication 2010-168079 publication (patent document 2) " label sticker ".This device is the device pasted by label on article, and possess the 1st paste section, the 2nd paste section, transport unit and guide, wherein above-mentioned label has: the 1st label area, and the be installed in article the 1st is stuck in region; With the 2nd label area, be installed in different the 2nd being stuck in region in the region that to be stuck from the above-mentioned 1st.
1st label area of this label from the state that above-mentioned article expose, is pasted to the 1st region (above the lid of such as container) that is stuck at the 2nd label area of above-mentioned label in 1st paste section.The 2nd label area of above-mentioned label is pasted to the 2nd of above-mentioned label the region (side of the lid of such as container and the side of container) that is stuck in 2nd paste section.Transport unit transmits said vesse from the 1st paste section to the 2nd paste section.Guide guides the 2nd label area from the above-mentioned label exposed to the article that the 2nd paste section is transmitted from the 1st paste section.Guide has the guide member bonding plane of above-mentioned label to non-adhesive, and this guide member is by realizing at its surface mount non-adhesive film or the coating of enforcement non-adhesive.The front of this non-adhesive film has non-adhesive, and the back side is formed with the bond layer pasted.
According to the device of patent document 2, because the 2nd label area from the above-mentioned label exposed to the above-mentioned article that the 2nd paste section is transmitted from the 1st paste section is guided by the guide member with non-adhesive, therefore to expose from above-mentioned article and the process of above-mentioned label of pasting transmitting, can prevent from being pasted onto unintended sites, and can stably continue to paste (with reference to specification digest, Claims 1 to 4, paragraph 0047 ~ 0051 and Fig. 1 ~ 6).
As other related background art, exist disclosed in Japanese Unexamined Patent Publication 2010-066283 publication (patent document 3) " optical thin film sticker ".This device is optical thin film sticker, has: feed mechanism, supply optical thin film (Polarizer, phase-contrast film, dim light film); Maintaining body, keeps above-mentioned optical thin film; Bonding plane protective film mechanism for stripping, carries out the stripping of the protective film of bonding plane from above-mentioned optical thin film; And display floater contact mechanism; display floater is made to contact above-mentioned optical thin film; it is characterized in that; the pipe (roller) that above-mentioned maintaining body has cementability by surface is formed; with the rotary motion of above-mentioned maintaining body, be configured to above-mentioned optical thin film in order successively by the position of the above-mentioned optical thin film of bonding maintenance, the position of peeling off the bonding plane protective film of above-mentioned optical thin film and the position making above-mentioned display floater contact with above-mentioned optical thin film.
Then, above-mentioned pipe (roller) has bonding force and weakens position near the stickup starting position of optical thin film.Therefore, optical thin film is pasting after on display floater and can easily depart from from above-mentioned pipe, consequently, optical thin film can not be made to produce fold, bubble, can paste on display floater rapidly.In addition, by arranging at this position on surface of the above-mentioned pipe with cementability concavo-convex in advance or embedding the more weak parts of bonding force, arrange movable part thus reduce contact area, form above-mentioned bonding force and weaken position (with reference to specification digest, claim 1 ~ 7, paragraph 0014 ~ 0052, Fig. 1 ~ 8).
Prior art document
Patent document
Patent document 1: Japanese Patent No. 3004532 publication (with reference to claim 1, paragraph 0026 ~ 0041, Fig. 1 ~ 3)
Patent document 2: Japanese Unexamined Patent Publication 2010-168079 publication (with reference to specification digest, Claims 1 to 4, paragraph 0047 ~ 0051, Fig. 1 ~ 6)
Patent document 3: Japanese Unexamined Patent Publication 2010-066283 publication (with reference to specification digest, claim 1 ~ 7, paragraph 0014 ~ 0052, Fig. 1 ~ 8)
Summary of the invention
But, in recent years, developing the 3D(ThreeDimensional that becomes increasingly active, three-dimensional) in the thin display panel of display, the transparent optical sheet (hereinafter referred to as bi-convex lens sheet) being formed with biconvex lens and the position consistency of the pixel groups formed on the glass substrate and fit.This is because, by the image making the right and left eyes identification of the people observed through biconvex lens different, 3D display easily can be realized.
In the front of bi-convex lens sheet, be arranged in parallel with the trickle lens (biconvex lens) that multiple surface is little curved surface.In order to prevent biconvex lens from leaving scar or spot, cover the front of bi-convex lens sheet with protective film.This protective film was taken off before being about to carry out bi-convex lens sheet being fitted to the operation on glass substrate.
The back side of bi-convex lens sheet is smooth, covers whole by thinner layer of adhesive material.The rear side of bi-convex lens sheet is contacted with glass substrate, and the bonding force had by above-mentioned layer of adhesive material is fixed on the glass substrate.Consequently, biconvex lens is positioned at the side contrary with glass substrate.
When being fitted to by bi-convex lens sheet on glass substrate (display floater), these trickle lens must be made to mate with the pixel set location on glass substrate.This point is and Polarizer difference.
In addition, because there is biconvex lens, therefore the front of bi-convex lens sheet is uneven.And, owing to requiring to be formed with carefully lenticular maintenance shape originally, therefore do not allow to leave scar or spot in thin lenticular front in laminating operation.Therefore, in the laminating of bi-convex lens sheet, the keeping method of the vacuum suction used under can not being used in the situations such as Polarizer.
Due to above reasons, in the laminating of bi-convex lens sheet, " sticker of film used for liquid crystal display element " of the patent document 1 of the keeping method adopting vacuum suction can not be used.Therefore, need development new technologies, or improve according to the feature of bi-convex lens sheet.
As one of method, such as consider following method: on the convex curvature face of the Polarizer supporter (curvature head) used in apparatus for film adhesion used for liquid crystal display element disclosed in patent document 1, after utilizing bonding force to keep (temporary fixed) bi-convex lens sheet, this curvature head is rotated on the glass substrate, thus bi-convex lens sheet is transferred to glass substrate from curvature head.In the method, in order to keep bi-convex lens sheet, the bonding force be applied on above-mentioned flexure plane need be more weak than the bonding force of the layer of adhesive material at the back side of bi-convex lens sheet (pasting on glass substrate based on this), but as mentioned above, be formed with trickle set of lenses in the front of bi-convex lens sheet and have trickle concavo-convex, being therefore applied to bonding force on above-mentioned flexure plane need than much better than without bonding force when such concavo-convex Polarizer.
But, so, when the curvature head of maintenance bi-convex lens sheet is rotated on the glass substrate, after bi-convex lens sheet completes to the transfer (laminating) of glass substrate, the terminal part of above-mentioned flexure plane with cementability contacts with the opposite face of glass substrate, because of the strong bonding force of above-mentioned flexure plane, glass substrate is easy to be attached on this terminal part and be raised.This is because the continuous rotation of curvature head causes the terminal part of above-mentioned flexure plane to rise.Consequently, bi-convex lens sheet cannot normally fit on glass substrate, thus the film that generation glass substrate is formed or distribution are by the undesirable condition peeled.
Such undesirable condition be the bonding force of the such above-mentioned flexure plane of the laminating operation of Polarizer in the past more weak when the problem that can not produce.
The present invention considers as above situation, its object is to provide a kind of optical sheet applying method, device and be suitable for this optical sheet applying method, the adhesive sheet of device, the convex curvature face (optical sheet holding surface) of the irregular optical sheet of front tool as bi-convex lens sheet by curvature head is kept, and this curvature head is rotated on substrate, thus when above-mentioned optical sheet is fitted on aforesaid substrate, after above-mentioned optical sheet completes to the transfer (laminating) of aforesaid substrate, aforesaid substrate can not be mentioned with the rising of the terminal part of above-mentioned flexure plane because of the bonding force of above-mentioned flexure plane.
Not in other objects of the present invention that this writes exactly, can be able to clearly by the following description and accompanying drawing.
(1) in the 1st viewpoint of the present invention, a kind of optical sheet applying method is provided.
This optical sheet applying method, utilizes bonding force to be remained in the optical sheet holding surface of curvature head by optical sheet, and above-mentioned curvature head is rotated on substrate, thus fits on aforesaid substrate by above-mentioned optical sheet, it is characterized in that possessing following operation:
The adhesive sheet with the 1st region and the 2nd region is installed in the optical sheet holding surface of curvature head, wherein, described 1st region has the bonding force that can be kept optical sheet by laminating operation, and described 2nd region has the bonding force more weak than the bonding force in above-mentioned 1st region;
The front of optical sheet is contacted with the 1st region of the above-mentioned adhesive sheet in the optical sheet holding surface being arranged on above-mentioned curvature head, and utilizes the bonding force in above-mentioned 1st region to keep (temporary fixed) this optical sheet;
Make the back side and the substrate contacts of the above-mentioned optical sheet of maintenance (temporary fixed) in above-mentioned optical sheet holding surface, and above-mentioned curvature head is rotated on aforesaid substrate, and make the back side integral adhesive of above-mentioned optical sheet on aforesaid substrate; And
Complete after making the operation of the back side integral adhesive of above-mentioned optical sheet on aforesaid substrate, above-mentioned curvature head rotated further, and above-mentioned optical sheet is isolated from above-mentioned optical sheet holding surface,
By above-mentioned optical sheet from the operation that above-mentioned optical sheet holding surface is isolated, make the 2nd region being arranged on the above-mentioned adhesive sheet in above-mentioned optical sheet holding surface relative with aforesaid substrate.
In the optical sheet applying method based on the 1st viewpoint of the present invention, the adhesive sheet with the 1st region and the 2nd region is installed in the optical sheet holding surface of curvature head, wherein, described 1st region has the bonding force that can be kept optical sheet by laminating operation, described 2nd region has the bonding force more weak than the bonding force in above-mentioned 1st region, by making the front of optical sheet contact with the 1st region, and the bonding force in above-mentioned 1st region is utilized to keep (temporary fixed) this optical sheet.
In addition, making above-mentioned curvature head rotate on aforesaid substrate after making the back side integral adhesive of above-mentioned optical sheet to aforesaid substrate, above-mentioned curvature head is made to rotate further and by above-mentioned optical sheet from the operation that above-mentioned optical sheet holding surface is isolated, make the 2nd region being arranged on the above-mentioned adhesive sheet in above-mentioned optical sheet holding surface relative with aforesaid substrate.
Therefore, as above-mentioned optical sheet, even if use the irregular optical sheet of front tool as bi-convex lens sheet, the value that positively can keep (temporary fixed) this optical sheet is adjusted to by the bonding force in the 1st region by above-mentioned adhesive sheet, just can by bonding for the front of this optical sheet and remain to the 1st region of above-mentioned adhesive sheet and carry out laminating operation.
In addition, making above-mentioned curvature head rotate further by above-mentioned optical sheet from the operation that above-mentioned optical sheet holding surface is isolated, because the 2nd region of the above-mentioned adhesive sheet making bonding force more weak than above-mentioned 1st region is relative with aforesaid substrate, therefore by regulating the bonding force in the 2nd region, even if above-mentioned adhesive sheet contacts with aforesaid substrate at that time, also can avoid mentioning aforesaid substrate because of this bonding force.
Consequently, the undesirable condition that can prevent from the bonding force had because of above-mentioned adhesive sheet from mentioning aforesaid substrate causing, such as, normally cannot fit to the film or distribution that are formed on substrate, on substrate by the undesirable condition peeled by bi-convex lens sheet.
In the preference of the optical sheet applying method based on the 1st viewpoint of the present invention, the bonding force in the 1st region of above-mentioned adhesive sheet is that rolling ball method tack is tested less than 240mm, be more preferably below 220mm, the bonding force in the 2nd region of above-mentioned adhesive sheet is rolling ball method tack test more than 240mm, is more preferably more than 260mm.
In other preferences of the optical sheet applying method based on the 1st viewpoint of the present invention, above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape along one article of limit of above-mentioned adhesive sheet.
In other preferences further of the optical sheet applying method based on the 1st viewpoint of the present invention, above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape respectively along two articles of relative limits of above-mentioned adhesive sheet.
In other preferences further of the optical sheet applying method based on the 1st viewpoint of the present invention, above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape respectively along the four edges of above-mentioned adhesive sheet.
In other preferences further of the optical sheet applying method based on the 1st viewpoint of the present invention, above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to banded and same heart shaped respectively along the four edges of above-mentioned adhesive sheet.
In other preferences further of the optical sheet applying method based on the 1st viewpoint of the present invention, above-mentioned adhesive sheet is divided into self relatively strong above-mentioned 1st region of bonding force and relatively weak above-mentioned 2nd region of bonding force.
In other preferences further of the optical sheet applying method based on the 1st viewpoint of the present invention, the entirety of above-mentioned adhesive sheet being formed as above-mentioned 1st region that bonding force is relatively strong, forming above-mentioned 2nd region by installing bonding force relatively weak illusory in its part.
In other preferences further of the optical sheet applying method based on the 1st viewpoint of the present invention, aforesaid substrate remains on Substrate table, above-mentioned optical sheet is being set to from the operation that above-mentioned optical sheet holding surface is isolated, above-mentioned adhesive sheet abutted with the sidewall of aforesaid substrate platform before contacting with aforesaid substrate, and the power making above-mentioned adhesive sheet press aforesaid substrate weakens or disappears.
(2) in the 2nd viewpoint of the present invention, a kind of optical sheet laminating apparatus is provided.
This optical sheet laminating apparatus utilizes bonding force to be remained in the optical sheet holding surface of curvature head by optical sheet, and above-mentioned curvature head is rotated on substrate, thus fits on aforesaid substrate by above-mentioned optical sheet, it is characterized in that,
Above-mentioned optical sheet laminating apparatus comprises: the curvature head with the optical sheet holding surface bending to convex; With the adhesive sheet be arranged in above-mentioned optical sheet holding surface,
Above-mentioned adhesive sheet has: the 1st region, and the 1st region has the bonding force that can be kept optical sheet by laminating operation; With the 2nd region, the 2nd region has the bonding force more weak than the bonding force in above-mentioned 1st region,
After making the back side integral adhesive of above-mentioned optical sheet on aforesaid substrate, when above-mentioned curvature head being rotated further and is isolated from above-mentioned optical sheet holding surface by above-mentioned optical sheet, make the 2nd region being arranged on the above-mentioned adhesive sheet in above-mentioned optical sheet holding surface relative with aforesaid substrate.
In the optical sheet laminating apparatus based on the 2nd viewpoint of the present invention, the adhesive sheet be arranged in the optical sheet holding surface of curvature head has: above-mentioned 1st region, has the bonding force that can be kept optical sheet by laminating operation; With above-mentioned 2nd region, there is the bonding force more weak than the bonding force in above-mentioned 1st region.In addition, after making the back side integral adhesive of above-mentioned optical sheet on aforesaid substrate, when above-mentioned curvature head being rotated further and is isolated from above-mentioned optical sheet holding surface by above-mentioned optical sheet, make above-mentioned 2nd region relative with aforesaid substrate.
Therefore, as above-mentioned optical sheet, even if use the irregular optical sheet of front tool as bi-convex lens sheet, the value that positively can keep (temporary fixed) this optical sheet is adjusted to by the bonding force in the 1st region by above-mentioned adhesive sheet, just can by bonding for the front of this optical sheet and remain to the 1st region of above-mentioned adhesive sheet and carry out laminating operation.
In addition, making above-mentioned curvature head rotate further by above-mentioned optical sheet from the operation that above-mentioned optical sheet holding surface is isolated, because the 2nd region of the above-mentioned adhesive sheet making bonding force more weak than above-mentioned 1st region is relative with aforesaid substrate, therefore by regulating the bonding force in the 2nd region, even if above-mentioned adhesive sheet contacts with aforesaid substrate at that time, also can avoid mentioning aforesaid substrate because of this bonding force.
Consequently, the undesirable condition that can prevent from the bonding force had because of above-mentioned adhesive sheet from mentioning aforesaid substrate causing, such as, normally cannot fit to the film or distribution that are formed on substrate, on substrate by the undesirable condition peeled by bi-convex lens sheet.
(3) in the 3rd viewpoint of the present invention, a kind of adhesive sheet is provided.
The feature of this adhesive sheet is, the back side has cementability, utilizes this cementability can bond in the optical sheet holding surface of curvature head,
Front has cementability, this front possesses the 1st region and the 2nd region, above-mentioned 1st region is formed and has relatively strong bonding force on the position relative with keeping the optical sheet of (temporary fixed), the outside being positioned at the scope relative with above-mentioned optical sheet at least partially in above-mentioned 2nd region, and the 2nd region has relatively weak bonding force.
In the adhesive sheet based on the 3rd viewpoint of the present invention, owing to forming as described above, as above-mentioned optical sheet, even if use the irregular optical sheet of front tool as bi-convex lens sheet, the value that positively can keep (temporary fixed) this optical sheet is adjusted to by the bonding force in the 1st region by above-mentioned adhesive sheet, just can by bonding for the front of this optical sheet and remain to the 1st region of above-mentioned adhesive sheet and carry out laminating operation.
In addition, making above-mentioned curvature head rotate further by above-mentioned optical sheet from the operation that above-mentioned optical sheet holding surface is isolated, because the part being positioned at the outside of the scope corresponding with above-mentioned optical sheet in the 2nd region of the bonding force above-mentioned adhesive sheet more weak than above-mentioned 1st region is relative with aforesaid substrate, therefore by regulating the bonding force in the 2nd region, even if above-mentioned adhesive sheet contacts with aforesaid substrate at that time, also can avoid mentioning aforesaid substrate because of this bonding force.
Consequently, the undesirable condition that can prevent from the bonding force had because of above-mentioned adhesive sheet from mentioning aforesaid substrate causing, such as, normally cannot fit to the film or distribution that are formed on substrate, on substrate by the undesirable condition peeled by bi-convex lens sheet.
In the preference of the adhesive sheet based on the 3rd viewpoint of the present invention, the bonding force in above-mentioned 1st region is that rolling ball method tack is tested less than 240mm, be more preferably below 220mm, the bonding force in above-mentioned 2nd region is rolling ball method tack test more than 240mm, is more preferably more than 260mm.
In other preferences of the adhesive sheet based on the 3rd viewpoint of the present invention, above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape along one article of limit of above-mentioned adhesive sheet.
In other preferences further of the adhesive sheet based on the 3rd viewpoint of the present invention, above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape respectively along two articles of relative limits of above-mentioned adhesive sheet.
In other preferences further of the adhesive sheet based on the 3rd viewpoint of the present invention, above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape respectively along the four edges of above-mentioned adhesive sheet.
In other preferences further of the adhesive sheet based on the 3rd viewpoint of the present invention, above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to banded and same heart shaped respectively along the four edges of above-mentioned adhesive sheet.
In other preferences further of the adhesive sheet based on the 3rd viewpoint of the present invention, above-mentioned adhesive sheet is divided into self relatively strong above-mentioned 1st region of bonding force and relatively weak above-mentioned 2nd region of bonding force.
In other preferences further of the adhesive sheet based on the 3rd viewpoint of the present invention, the entirety of above-mentioned adhesive sheet being formed as above-mentioned 1st region that bonding force is relatively strong, forming above-mentioned 2nd region by installing bonding force relatively weak illusory in its part.
(4) patent document 2(Japanese Unexamined Patent Publication 2010-168079 publication) disclosed in " label sticker ", about not wishing bonding part to be installed non-adhesive film this point, similar with the adhesive sheet based on the 3rd viewpoint of the present invention.But, in patent document 2, the object of stickup and the adhesive surface of label or sheet are provided with non-adhesive film, on the other hand, in the adhesive sheet based on the 3rd viewpoint of the present invention, for keeping the adhesive sheet of optical sheet installs illusory, therefore obviously different from the adhesive sheet based on the 3rd viewpoint of the present invention.
Patent document 3(Japanese Unexamined Patent Publication 2010-066283 publication) disclosed in " optical thin film sticker ", about not wishing bonding part makes its cementability to reduce this point, similar with the adhesive sheet based on the 3rd viewpoint of the present invention.But in patent document 3, do not wish that bonding part and Polarizer are fitted the initial corresponding of process, on the other hand, in the adhesive sheet based on the 3rd viewpoint of the present invention, corresponding with the fit ending of process of optical sheet, in this, both are obviously different.
According to the optical sheet applying method based on the 1st viewpoint of the present invention, based on the optical sheet laminating apparatus of the 2nd viewpoint of the present invention and the adhesive sheet based on the 3rd viewpoint of the present invention, there is following effect: remained to by the irregular optical sheet of front tool as bi-convex lens sheet on the convex curvature face (optical sheet holding surface) of curvature head, and this curvature head is rotated on substrate, thus when above-mentioned optical sheet is fitted on aforesaid substrate, after above-mentioned optical sheet completes to the transfer (laminating) of aforesaid substrate, aforesaid substrate can not be mentioned with the rising of the terminal part of above-mentioned flexure plane because of the bonding force of above-mentioned flexure plane.
Accompanying drawing explanation
Fig. 1 (a) is the top view in the front of the adhesive sheet of the optical sheet applying method represented for the 1st embodiment of the present invention, and (b) is the top view at the back side representing this adhesive sheet.
Fig. 2 (a) represents in the optical sheet applying method of the 1st embodiment of the present invention, by be arranged on adhesive sheet on curvature head keep the state of optical sheet, along the sectional view of the IIA-IIA line of (b), (b) is its upward view.
Fig. 3 is the key diagram of the optical sheet applying method representing the 1st embodiment of the present invention according to operation.
Fig. 4 (a) is the top view in the front of the adhesive sheet of the optical sheet applying method represented for the 2nd embodiment of the present invention, and (b) is the top view at the back side representing this adhesive sheet.
Fig. 5 (a) represents in the optical sheet applying method of the 2nd embodiment of the present invention, by be arranged on adhesive sheet on curvature head keep the state of optical sheet, along the sectional view of the VA-VA line of (b), (b) is its upward view.
Fig. 6 (a) is the top view in the front of the adhesive sheet of the optical sheet applying method represented for the 3rd embodiment of the present invention, and (b) is the top view at the back side representing this adhesive sheet.
Fig. 7 (a) represents in the optical sheet applying method of the 3rd embodiment of the present invention, by be arranged on adhesive sheet on curvature head keep the state of optical sheet, along the sectional view of the VIIA-VIIA line of (b), (b) is its upward view.
Fig. 8 (a) is the top view in the front of the adhesive sheet of the optical sheet applying method represented for the 4th embodiment of the present invention, and (b) is the top view at the back side representing this adhesive sheet.
Fig. 9 (a) represents in the optical sheet applying method of the 4th embodiment of the present invention, curvature head is installed the state of adhesive sheet, along the sectional view of IXA-IXA line of (b), (b) is its upward view.
Figure 10 (a) is the top view in the front of the adhesive sheet of the optical sheet applying method represented for the 5th embodiment of the present invention, and (b) is the top view at the back side representing this adhesive sheet.
Figure 11 (a) represents in the optical sheet applying method of the 5th embodiment of the present invention, by be arranged on adhesive sheet on curvature head keep the state of optical sheet, along the sectional view of the XIIA-XIIA line of (b), (b) is its upward view.
Figure 12 is the key diagram of the optical sheet applying method representing the 5th embodiment of the present invention according to operation.
Figure 13 (a) is the top view in the front of the adhesive sheet of the optical sheet applying method represented for the 6th embodiment of the present invention, and (b) is the top view at the back side representing this adhesive sheet.
Figure 14 (a) represents in the optical sheet applying method of the 6th embodiment of the present invention, by be arranged on adhesive sheet on curvature head keep the state of optical sheet, along the sectional view of the XIVA-XIVA line of (b), (b) is its upward view.
Figure 15 (a) is the top view in the front of the adhesive sheet of the optical sheet applying method represented for the 7th embodiment of the present invention, and (b) is the top view at the back side representing this adhesive sheet.
Figure 16 (a) represents in the optical sheet applying method of the 7th embodiment of the present invention, by be arranged on adhesive sheet on curvature head keep the state of optical sheet, along the sectional view of the XVIA-XVIA line of (b), (b) is its upward view.
Figure 17 is the key diagram of the optical sheet applying method representing the 8th embodiment of the present invention according to operation.
Detailed description of the invention
Below, with reference to accompanying drawing, the preferred embodiment of the present invention is described in detail.
(the 1st embodiment)
Fig. 1 ~ Fig. 3 represents the optical sheet applying method of the 1st embodiment of the present invention.At this, as front (holding surface) uneven optical sheet 10, use the front because of trickle lens to there is concavo-convex bi-convex lens sheet, use liquid crystal panel as glass substrate 50.In addition, the curvature 20 with the structure shown in Fig. 2 (a) is used.
As shown in Figure 2 (a) shows, overall cross sectional shape is roughly T-shaped curvature 20, and it possesses: bar-shaped support portion 20a, can engage with the rotating shaft 21 of level rotationally; Rotation section 20b, has the flexure plane (having predetermined curvature) of dome arcuation as " optical sheet holding surface " in outside.Curvature 20 can rotate around rotating shaft 21 in vertical face.The optical sheet holding surface of rotation section 20b has the optical sheet 10(in this case bi-convex lens sheet than laminating) slightly large length and width.
The optical sheet holding surface entirety being arranged on the dome arcuation on the rotation section 20b of curvature 20 is covered by adhesive sheet 30.Front and the back side both sides of adhesive sheet 30 all have cementability, by making its back side bond to optical sheet holding surface, and are installed in optical sheet holding surface.The front of adhesive sheet 30 is used for keeping (temporary fixed) to optical sheet holding surface optical sheet 10 by bonding force.
The adhesive sheet 30 used in this 1st embodiment has structure as shown in Figure 1.That is, the global shape of adhesive sheet 30 is rectangle, and its size is identical with the area of the optical sheet holding surface of curvature 20.Therefore, if be installed in optical sheet holding surface by adhesive sheet 30, then as shown in Figure 2, whole optical sheet holding surface is covered by adhesive sheet 30.
(fixed by bonding force) to carry out the installation of adhesive sheet 30 to optical sheet holding surface by the back side of adhesive sheet 30 being bonded in optical sheet holding surface.For this reason, be furnished with known adhesives at the Bei Mian Tu of adhesive sheet 30, apply predetermined bonding force.The intensity of this bonding force is required to be by optical sheet 10 relative to glass substrate 50(in this case liquid crystal panel) laminating operation and can not by the degree peeled.
The front of adhesive sheet 30 and the adhesives at the back side form the adhesive linkage producing predetermined bonding force respectively.Adhesive sheet 30 just look like shown in Fig. 1 (a), be divided into the 2nd region 30b of the 1st region 30a of the rectangle that bonding force is relatively strong and the relatively weak rectangle of bonding force.The area of area ratio the 1st region 30a of the 2nd region 30b is much smaller.The bonding force of the 1st region 30a is in its overall approximate equality.The bonding force of the 2nd region 30a is also in its overall approximate equality.
The 1st region 30a in the front of adhesive sheet 30 is the region for keeping (temporary fixed) optical sheet 10, if the front of optical sheet 10 is pressed on the 1st region 30a, even if be then the irregular optical sheet 10 of front tool, the bonding force also by the 1st region 30a positively keeps this state.As shown in Fig. 2 (b), make whole of optical sheet 10 to contact with the 1st region 30a and it is bonding, keep.
The 2nd region 30b in the front of adhesive sheet 30 is formed as, after the whole face of optical sheet 10 is fitted to glass substrate 50, and the part that the optical sheet holding surface that the 2nd region 30b is configured at curvature 20 contacts with substrate 50.Therefore, as shown in Fig. 2 (b), optical sheet 10 is installed into and does not contact with the 2nd region 30b.
The bonding force of the 1st region 30a is set as can by such as bi-convex lens sheet front there is trickle concavo-convex and uneven optical sheet 10 positively keep (temporary fixed) to the value in the optical sheet holding surface of curvature 20, specifically, be set as under rolling ball method tack (rollingtack) test (JIS specification) less than 240mm.Therefore, by this strong bonding force, even the uneven optical sheet 10 in front, also can stably keep (temporary fixed) in curvature 20.If bonding force equals 240mm or on it under the test of rolling ball method tack, then bonding force is not enough and optical sheet 10 positively can not be temporarily anchored in curvature 20, thus in the way of laminating process, easily there is the problem peeling optical sheet 10 from curvature 20.
The bonding force of the 1st region 30a is more preferably below 220mm under the test of rolling ball method tack.This is because, if bonding force is within the scope of this, just optical sheet 10 more positively can be temporarily anchored in curvature 20.
Be set as by the bonding force of the 2nd region 30b more weak than the bonding force of the 1st region 30a, specifically, be more than 240mm under the test of rolling ball method tack.Therefore, after optical sheet 10 and glass substrate 50 are fitted, even if the 2nd region 30b contacts with glass substrate 50, be also difficult to by this bonding force, glass substrate 50 be mentioned.
The bonding force of the 2nd region 30b is more preferably more than 260mm under the test of rolling ball method tack.If bonding force is within the scope of this, then can prevent following unfavorable condition: the glass substrate 50 contacted with the 2nd region 30b is raised because of this bonding force, or distribution on the surface of glass substrate 50, film are damaged because of this bonding force by peeling.
After the whole face of optical sheet 10 is fitted to glass substrate 50, the reason 2nd region 30b being only set in the position contacted with glass substrate 50 is, this position is the part the most easily causing the above-mentioned unfavorable conditions such as the distribution of glass substrate 50, the stripping of film and damage.Like this, in this 1st embodiment, because the 2nd region 30b is not formed at the whole periphery of the 1st region 30a, therefore there is following advantage: by (end edge) of optical sheet to be alignd with the boundary line of the 1st region 30a and the 2nd region 30b and bonding as Suo Shi Fig. 2 (b), also can tackle easily when changing the size of the optical sheet 10 of fitting, and not need just to change adhesive sheet 30 whenever changing the size of optical sheet 10.
Next, with reference to Fig. 3, the optical sheet applying method of this 1st embodiment is described.
First, as shown in Fig. 3 (a), the back side of adhesive sheet 30 is bonded in be arranged in the optical sheet holding surface of the dome arcuation on the rotation section 20b of curvature 20, and adhesive sheet 30 is installed.Thus, whole optical sheet holding surface is covered by adhesive sheet 30.Adhesive sheet 30 is corresponding with the shape of optical sheet holding surface and bend to dome arcuation.At this moment, the 2nd region 30b in the front of adhesive sheet 30 is made relative to making curvature 20 direction of rotating come rear.
Next, make the front of optical sheet 10 press and bond on the front of the adhesive sheet 30 of installing in the optical sheet holding surface of curvature 20, thus by temporary fixed for optical sheet 10 (maintenance) in optical sheet holding surface.In this condition, because the front of adhesive sheet 30 bends to convex downward, therefore, the optical sheet 10 be temporarily fixed bends too.
When this optical sheet 10 is temporary fixed, as clearly represented in Fig. 2 (b), aliging optical sheet 10 with the limit (border of the 1st region 30a and the 2nd region 30b) in the front of the 2nd region 30b in the front of adhesive sheet 30.Consequently, around optical sheet 10, expose the non-overlapping portion of adhesive sheet 30.Specifically, expose the remainder of the 1st relatively strong region 30a of bonding force on the front of optical sheet 10, the left side and the right, expose the 2nd region 30b that bonding force is relatively weak in its back.
Next, detect the position of the optical sheet 10 be temporarily fixed in curvature 20 by known method, and detect the position of glass substrate 50 simultaneously.Then, based on the data detected, in the following way optical sheet 10 is fitted on the preposition on glass substrate 50.
That is, as shown in Figure 3 (b), curvature 20 is made rearward to rotate at a predetermined angle around rotating shaft 21, until the front end of optical sheet 10 becomes approximate horizontal.At this moment, curvature 20 tilted rearward.On the other hand, glass substrate 50 proper level is made to move.Then, the front end of optical sheet 10 made to be temporarily fixed in curvature 20 abuts with the front end of the predetermined fit area on glass substrate 50.Fig. 3 (b) represents state now.
After this, if make glass substrate 50 forwards move horizontally from abutting state, then curvature 20 rotates around rotating shaft 21 thereupon, and rotation section 20b rotates on glass substrate 50.With this situation, the optical sheet 10 in curvature 20 is little by little shifted from curvature 20 to glass substrate 50 by the bonding force at its back side.
As shown in Figure 3 (c), if the rear end that curvature 20 rotates to optical sheet 10 becomes approximate horizontal, then the entirety of optical sheet 10 is bonded on glass substrate 50.In this condition, curvature 20 forwards tilts.
After just becoming the state shown in Fig. 3 (c), the 2nd region 30b of the adhesive sheet 30 of curvature 20 is relative with glass substrate 50, and then by being applied to the pressing force of curvature between 20 with glass substrate 50 and contacting.But, by suitably regulating the bonding force of the 2nd region 30b more weak than the bonding force of the 1st region 30a, the bonding force that can not exist because of the 2nd region 30b cause glass substrate 50 to be raised or the film on surface of glass substrate 50 by situation about peeling, therefore can not produce the damage because above-mentioned situation causes.
Optical sheet 10 is carry out with good precision to the laminating of glass substrate 50 naturally.
As mentioned above, in the optical sheet applying method of the 1st embodiment of the present invention, prepare the adhesive sheet 30 that front and back side both sides all have cementability, be formed with the 1st relatively strong region 30a of bonding force and relatively weak the 2nd region 30b of bonding force in the front of this adhesive sheet 30.Further, by the back side of adhesive sheet 30 being bonded in the optical sheet holding surface of the dome arcuation of curvature 20, and adhesive sheet 30 is installed in optical sheet holding surface.
Then, in the 1st region 30a of the adhesive sheet 30 be arranged in optical sheet holding surface, utilize the temporary fixed optical sheet 10 of bonding force.At this moment, aliging with the limit (border of the 1st region 30a and the 2nd region 30b) in the front of the 2nd region 30b in the front of adhesive sheet 30 by the front of optical sheet 10.
Further, the front end of optical sheet 10 making to be temporarily fixed in curvature 20 abuts with the front end of the predetermined fit area on glass substrate 50, then by making glass substrate 50 forwards move horizontally, the rotation section 20b of curvature 20 is rotated on glass substrate 50.Like this, by the bonding force in its front, optical sheet 10 is fitted to glass substrate 50 from curvature 20.
By optical sheet 10 while with the front of the 2nd region 30b of adhesive sheet 30 while align, and utilize bonding force to temporarily anchor to the 1st region 30a of adhesive sheet 30, therefore, after just the integral plaster of optical sheet 10 being incorporated into glass substrate 50, the 2nd region 30b of the adhesive sheet 30 that bonding force is relatively weak and glass substrate 50 are relatively and contact.Therefore, when adhesive sheet 30 contacts to glass substrate 50, glass substrate 50 will be caused to be raised because of the bonding force of the 2nd region 30b or the film on surface of glass substrate 50 is peeled, therefore can not produce the damage because above-mentioned situation causes.In addition, optical sheet 10 carries out to the laminating of glass substrate 50 with good precision.
In addition, in this 1st embodiment, after optical sheet 10 is fitted to glass substrate 50, the 2nd region 30b of adhesive sheet 30 is only set in the position contacted with glass substrate 50, this is because the above-mentioned unfavorable condition of this position easily attractive.In addition, in the way of laminating operation, due to by curvature 20 from upper pressing optical sheet 10 of fitting, even if the 1st region 30a therefore exposed at the outer peripheral portion of optical sheet 10 contacts with relative glass substrate 50, also can not produce the phenomenon mentioning substrate 50.
(the 2nd embodiment)
Fig. 4 and Fig. 5 represents the optical sheet applying method of the 2nd embodiment of the present invention.At this, also use bi-convex lens sheet as optical sheet 10, use liquid crystal panel as glass substrate 50.In addition, curvature 20 with use in above-mentioned 1st embodiment identical, use adhesive sheet 30A to replace adhesive sheet 30.
The adhesive sheet 30A used in this 2nd embodiment has structure as shown in Figure 4, except the front being formed at adhesive sheet 30A respectively except the 2nd region 30Ab and back this point, identical with the adhesive sheet 30 used in above-mentioned 1st embodiment.Two the 2nd region 30Ab are roughly the same shape and roughly the same size.
In the optical sheet applying method of this 2nd embodiment, time on the front temporarily anchoring to the adhesive sheet 30A installed in the optical sheet holding surface of curvature 20, as clearly represented in Fig. 5 (b), aliging optical sheet 10 with the limit (border of the 2nd region 30Ab of the 1st region 30Aa and rear avris) in the front of the 2nd region 30Ab in the front of adhesive sheet 30A.Consequently, around optical sheet 10, expose the non-overlapping portion of adhesive sheet 30A.Specifically, expose the remainder of the 1st relatively strong region 30Aa of bonding force on the left side of optical sheet 10 and the right, expose the 2nd region 30Ab that bonding force is relatively weak in its front and back.In addition, identical with the optical sheet applying method of above-mentioned 1st embodiment, therefore the description thereof will be omitted.
Obviously, in the optical sheet applying method of this 2nd embodiment, the effect identical with the optical sheet applying method of above-mentioned 1st embodiment can be obtained.
(the 3rd embodiment)
Fig. 6 and Fig. 7 represents the optical sheet applying method of the 3rd embodiment of the present invention.At this, also use bi-convex lens sheet as optical sheet 10, use liquid crystal panel as glass substrate 50.In addition, curvature 20 with use in above-mentioned 1st embodiment identical, use adhesive sheet 30B to replace adhesive sheet 30.
The adhesive sheet 30B used in this 3rd embodiment has structure as shown in Figure 6, except surrounding (this is equivalent to the 2nd region 30Bb and is formed at the front of adhesive sheet 30B, back, the left side and the right) this point that the 2nd region 30Bb is formed as surrounding adhesive sheet 30B, identical with the adhesive sheet 30 used in above-mentioned 1st embodiment.
In the optical sheet applying method of this 3rd embodiment, time on the front temporarily anchoring to the adhesive sheet 30B installed in the optical sheet holding surface of curvature 20, as clearly represented in Fig. 7 (b), aliging optical sheet 10 with the limit (portion boundary being positioned at back of the 1st region 30Ba and the 2nd region 30Bb) in the front of the 2nd region 30Bb in the front of adhesive sheet 30B.Consequently, expose the non-overlapping portion of adhesive sheet 30B around optical sheet 10, on the left side of optical sheet 10, the right and front thereof, back adjoin the 2nd relatively weak region 30Bb of bonding force.Do not expose the 1st region 30Ba that bonding force is relatively strong.Reason is that the size of optical sheet 10 is identical with the size of the 1st region 30Ba.
Obviously, in the optical sheet applying method of this 3rd embodiment, the effect identical with the optical sheet applying method of above-mentioned 1st embodiment can be obtained.
(the 4th embodiment)
Fig. 8 and Fig. 9 represents the optical sheet applying method of the 4th embodiment of the present invention.At this, also use bi-convex lens sheet as optical sheet 10, use liquid crystal panel as glass substrate 50.In addition, curvature 20 with use in above-mentioned 1st embodiment identical, use adhesive sheet 30C to replace adhesive sheet 30.
The adhesive sheet 30C used in this 4th embodiment has structure as shown in Figure 8, is formed with three the 1st region 30Ca, three the 2nd region 30Cb.The 1st region 30Ca of inner side is rectangle, and second the 1st region 30Ca be positioned at outside it is the rectangular ring of the 1st region 30Ca surrounding inner side, and the 3rd the 1st region 30Ca be positioned at outside it is the rectangular ring of encirclement second the 1st region 30Ca.They are concentrically configured.
The 2nd region 30Cb of inner side is between the 1st region 30Ca and second the 1st region 30Ca of inner side, is rectangular ring.Second the 2nd region 30Cb, between second the 1st region 30Ca and the 3rd the 1st region 30Ca, is rectangular ring.Outermost 2nd region 30Cb, between the 3rd the 1st region 30Ca and the outer peripheral edge of adhesive sheet 30, is rectangular ring.
The adhesive sheet 30C used in this 4th embodiment is the equal of the 2nd region 30Cb having added two rectangular rings in the adhesive sheet 30B used in above-mentioned 3rd embodiment at the 1st region 30Ca being arranged in inner side with one heart.
In the optical sheet applying method of this 4th embodiment, time on the front temporarily anchoring to the adhesive sheet 30C installed in the optical sheet holding surface of curvature 20, as clearly represented in Fig. 7 (b), aliging optical sheet 10 with the limit (back on the border of the 1st region 30Cb being positioned at outermost 2nd region 30Cb and being adjacent) being positioned at the front of outermost 2nd region 30Cb in the front of adhesive sheet 30C.Consequently, expose the non-overlapping portion of adhesive sheet 30C around optical sheet 10, on the left side of optical sheet 10, the right and front thereof, back expose the 2nd relatively weak region 30Cb of bonding force.Do not expose the 1st region 30Ca that bonding force is relatively strong.Reason is that the size of optical sheet 10 is identical with the size being positioned at outermost 1st region 30Ca.
Obviously, in the optical sheet applying method of this 4th embodiment, the effect identical with the optical sheet applying method of above-mentioned 1st embodiment can be obtained.Further, the advantage that the optical sheet 10 that existence can be different from several size is corresponding.
(the 5th embodiment)
Figure 10 ~ Figure 12 represents the optical sheet applying method of the 5th embodiment of the present invention.At this, also use bi-convex lens sheet as optical sheet 10, use liquid crystal panel as glass substrate 50.In addition, curvature 20 with use in above-mentioned 1st embodiment identical, use adhesive sheet 30D to replace adhesive sheet 30.
The adhesive sheet 30D used in this 5th embodiment has structure as shown in Figure 10, forms the 2nd region 30Db by the illusory film (dummyfilm) 40 of the rectangle near the back that is fixed on adhesive sheet 30D.That is, the 1st region 30Da is formed at the whole front of adhesive sheet 30D, only near the back of adhesive sheet 30D, covers illusory film 40, and the bonding force of this part is 0.Therefore, the part that can be described as being configured with illusory film 40 is formed without the 2nd region 30Db of bonding force.The thickness of illusory film 40 is roughly the same with the thickness of optical sheet 10.
In the optical sheet applying method of this 5th embodiment, time on the front temporarily anchoring to the adhesive sheet 30D installed in the optical sheet holding surface of curvature 20, as clearly represented in Figure 11 (b), by the limit in the front of the 2nd region 30Db in the front of an edge adhesive sheet 30D of the optical sheet 10D border of the 2nd region 30Db (the 1st region 30Da with) (parallel) configuration.A small gap is vacated between optical sheet 10 and illusory film 40.Consequently, around optical sheet 10, expose the non-overlapping portion of adhesive sheet 30D.Specifically, expose the remainder of the 1st relatively strong region 30Da of bonding force in the left side of optical sheet 10, the right and front, expose the illusory film 40 of the 2nd region 30Db(without bonding force in its back).Also the remainder of the 1st region 30Da is exposed in gap between optical sheet 10 and illusory film 40.
As mentioned above, in the optical sheet applying method of the 5th embodiment of the present invention, preparation front and back side both sides all have the adhesive sheet 30D of cementability, are formed with the 1st stronger region 30Da of bonding force and the 2nd region 30Db without bonding force in the front of this adhesive sheet 30.Further, by the back side of adhesive sheet 30D being bonded in the optical sheet holding surface of the dome arcuation of curvature 20, and adhesive sheet 30D is installed in optical sheet holding surface.
Then, in the 1st region 30Da being arranged on the adhesive sheet 30D in optical sheet holding surface, utilize the temporary fixed optical sheet 10 of bonding force.At this moment, by the front of optical sheet 10 with limit (border of the 1st region 30Da and the 2nd region 30Db) configured in parallel in the front of the 2nd region 30Db in the front of adhesive sheet 30D.
Further, the front end of optical sheet 10 making to be temporarily fixed in curvature 20 abuts with the front end of the predetermined fit area on glass substrate 50, then make glass substrate 50 forwards move horizontally, thus the rotation section 20b of curvature 20 is rotated on glass substrate 50.Like this, by the bonding force in its front, optical sheet 10 is fitted to glass substrate 50 from curvature 20.
By optical sheet 10 while with the front of the 2nd region 30Db of adhesive sheet 30D while align, and utilize bonding force to temporarily anchor in the 1st region 30Da of adhesive sheet 30D, therefore after just the integral plaster of optical sheet 10 being incorporated into glass substrate 50, the illusory film 40 of the 2nd region 30Db(without bonding force) with glass substrate 50 relatively and contact.Therefore, when adhesive sheet 30D contacts to glass substrate 50, glass substrate 50 will be caused to be raised because of the bonding force of the 2nd region 30Db or the film on surface of glass substrate 50 is peeled, thus can not the therefore damage caused be produced.In addition, optical sheet 10 carries out to the laminating of glass substrate 50 with good precision.
(the 6th embodiment)
Figure 13 and Figure 14 represents the optical sheet applying method of the 6th embodiment of the present invention.At this, also use bi-convex lens sheet as optical sheet 10, use liquid crystal panel as glass substrate 50.In addition, curvature 20 with use in above-mentioned 1st embodiment identical, use adhesive sheet 30E to replace adhesive sheet 30.
The adhesive sheet 30E used in this 6th embodiment has structure as shown in fig. 13 that, except the front being formed at adhesive sheet 30 respectively except the 2nd region 30Eb and back this point, identical with the adhesive sheet 30D used in above-mentioned 5th embodiment.Two the 2nd region 30Eb are identical shape and identical size.
In the optical sheet applying method of this 6th embodiment, time on the front temporarily anchoring to the adhesive sheet 30E installed in the optical sheet holding surface of curvature 20, as clearly represented in Figure 14 (b), that make optical sheet 10 with limit that the is front of the 2nd region 30Eb in the front of adhesive sheet 30E the border of the 2nd region 30Eb of rear avris (the 1st region 30Ea with) parallel.Consequently, around optical sheet 10, expose the non-overlapping portion of adhesive sheet 30E.Specifically, expose the remainder of the 1st relatively strong region 30Ea of bonding force on the left side of optical sheet 10 and the right, expose the 2nd region 30Eb without bonding force in its front and back.In addition, identical with the optical sheet applying method of above-mentioned 1st embodiment, therefore the description thereof will be omitted.
Obviously, in the optical sheet applying method of this 6th embodiment, the effect identical with the optical sheet applying method of above-mentioned 5th embodiment can be obtained.
(the 7th embodiment)
Figure 15 and Figure 16 represents the optical sheet applying method of the 7th embodiment of the present invention.At this, also use bi-convex lens sheet as optical sheet 10, use liquid crystal panel as glass substrate 50.In addition, curvature 20 with use in above-mentioned 1st embodiment identical, use adhesive sheet 30F to replace adhesive sheet 30D.
The adhesive sheet 30F used in this 7th embodiment has structure as shown in figure 15, except the 2nd region 30Fb is formed at the front of adhesive sheet 30F, back and the right and left this point respectively, identical with the adhesive sheet 30D used in above-mentioned 5th embodiment.Two the 2nd region 30Fb being positioned at front and back are mutually the same shape, size.Two the 2nd region 30Fb being positioned at the left side and the right are also mutually the same shape, size.
In the optical sheet applying method of this 7th embodiment, time on the front temporarily anchoring to the adhesive sheet 30F installed in the optical sheet holding surface of curvature 20, as clearly represented in Figure 16 (b), are alignd with four limits (border of the 2nd region 30Fb of the 1st region 30Fa and rear avris) of the 2nd region 30Fb in the front of adhesive sheet 30F in four limits of optical sheet 10 respectively.Consequently, the non-overlapping portion of adhesive sheet 30F is exposed around optical sheet 10, specifically, expose the illusory film 40 of the 2nd region 30FB(without bonding force in the left side of optical sheet 10, the right, front and back), the part beyond those the 2nd region 30FB exposes the 1st region 30Fa.In addition, with the optical sheet applying method of above-mentioned 5th embodiment just as, therefore the description thereof will be omitted.
Obviously, in the optical sheet applying method of this 7th embodiment, the effect identical with the optical sheet applying method of above-mentioned 5th embodiment can be obtained.
(the 8th embodiment)
Figure 17 represents the optical sheet applying method of the 8th embodiment of the present invention.At this, also use bi-convex lens sheet as optical sheet 10, use liquid crystal panel as glass substrate 50.In addition, curvature 20 and adhesive sheet 30D all with use in above-mentioned 5th embodiment identical.
In this 8th embodiment, the shape of the Substrate table 60 of glass substrate 50 is kept to have feature.That is, as shown in Figure 17 (a) shows, the upper surface of the sidewall 60a of Substrate table 60 is higher than the upper surface of the glass substrate 50 remained on inside Substrate table 60, and its difference in height is d.This difference in height d is roughly equal with the thickness of the thickness and illusory film 40 that carry out the optical sheet 10 of fitting.
In the optical sheet applying method of this 8th embodiment, time on the front temporarily anchoring to the adhesive sheet 30D installed in the optical sheet holding surface of curvature 20, as clearly represented in Figure 17 (b), that make optical sheet 10 with the illusory film of the 2nd region 30Db(40 that the is front of adhesive sheet 30) limit (border of the 2nd region 30Db of the 1st region 30Da and the rear avris) configured in parallel in front.Consequently, around optical sheet 10, expose the non-overlapping portion of adhesive sheet 30D.Specifically, as shown in Figure 11 (b), expose the remainder of the 1st relatively strong region 30Da of bonding force in the left side of optical sheet 10, the right and front, expose the 2nd region 30b without bonding force in its back.
Then, curvature 20 is rotated on glass substrate 50, when being fitted on glass substrate 50 in the whole face of optical sheet 10, as shown in Figure 17 (b), the illusory film 40 of the 2nd region 30Db(of the adhesive sheet 30D of curvature 20) relative with glass substrate 50 and contact.In this 8th embodiment, the d higher than the surface of glass substrate 50 of the sidewall 60a due to Substrate table 60, the therefore illusory film 40 of the 2nd region 30b(of adhesive sheet 30D) abut with the sidewall 60a of Substrate table 60.
Therefore, under the state of Figure 11 (b), not only the power of a curvature 20 pressing glass substrate 50 reduces, and has also acted on curvature 20 power be pulled away from from glass substrate 50.Under normal circumstances, glass substrate 50 may be mentioned by the rotation along with curvature 20, but completely impossible in the present embodiment.Further, also the position of glass substrate 50 will be caused to depart from along with the rotation of curvature 20.
(variation)
The 1st ~ 8th above-mentioned embodiment represents example the present invention specialized.Therefore, the present invention is not limited to these embodiments, can carry out various distortion when not departing from purport of the present invention.
Such as, in the above-described embodiment, employ the curvature head that section has the optical sheet holding surface bending to dome arcuation, but be not limited thereto.As long as have the optical sheet holding surface bending to dome arcuation, arbitrary curvature head can be used.Such as, global shape also can be used to be columnar curvature head.

Claims (18)

1. an optical sheet applying method, utilizes bonding force to be remained in the optical sheet holding surface of curvature head by optical sheet, and above-mentioned curvature head is rotated on substrate, thus fits on aforesaid substrate by above-mentioned optical sheet, it is characterized in that possessing following operation:
The adhesive sheet with the 1st region and the 2nd region is installed in the optical sheet holding surface of curvature head, wherein, described 1st region has the bonding force that can be kept optical sheet by laminating operation, and described 2nd region has the bonding force more weak than the bonding force in above-mentioned 1st region;
The front of optical sheet is contacted with the 1st region of the above-mentioned adhesive sheet in the optical sheet holding surface being arranged on above-mentioned curvature head, and utilizes the bonding force in above-mentioned 1st region temporary fixed and keep this optical sheet;
Make temporary fixed and remain on the back side and the substrate contacts of the above-mentioned optical sheet in above-mentioned optical sheet holding surface, and above-mentioned curvature head is rotated on aforesaid substrate, and making the back side integral adhesive of above-mentioned optical sheet on aforesaid substrate; And
Complete after making the operation of the back side integral adhesive of above-mentioned optical sheet on aforesaid substrate, above-mentioned curvature head rotated further, and above-mentioned optical sheet is isolated from above-mentioned optical sheet holding surface,
By above-mentioned optical sheet from the operation that above-mentioned optical sheet holding surface is isolated, make the 2nd region being arranged on the above-mentioned adhesive sheet in above-mentioned optical sheet holding surface relative with aforesaid substrate.
2. optical sheet applying method according to claim 1, wherein,
The bonding force in the 1st region of above-mentioned adhesive sheet is that rolling ball method tack is tested less than 240mm, and the bonding force in the 2nd region of above-mentioned adhesive sheet is rolling ball method tack test more than 240mm.
3. optical sheet applying method according to claim 1 and 2, wherein,
Above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape along the one article of limit being positioned at rear relative to the direction of rotating of above-mentioned adhesive sheet.
4. optical sheet applying method according to claim 1 and 2, wherein,
Above-mentioned adhesive sheet is rectangle, by above-mentioned 2nd region being positioned at front and being configured to band shape relative to the direction of rotating respectively with two articles of relative limits at rear along above-mentioned adhesive sheet.
5. optical sheet applying method according to claim 1 and 2, wherein,
Above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape respectively along the four edges of above-mentioned adhesive sheet.
6. optical sheet applying method according to claim 1 and 2, wherein,
Above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to banded and same heart shaped respectively along the four edges of above-mentioned adhesive sheet.
7. optical sheet applying method according to claim 1, wherein,
Above-mentioned adhesive sheet is divided into self relatively strong above-mentioned 1st region of bonding force and relatively weak above-mentioned 2nd region of bonding force.
8. optical sheet applying method according to claim 1, wherein,
The entirety of above-mentioned adhesive sheet is formed as relatively strong above-mentioned 1st region of bonding force, by installing bonding force relatively weak illusory and form above-mentioned 2nd region in its part.
9. optical sheet applying method according to claim 1, wherein,
Aforesaid substrate remains on Substrate table,
Be set to from the operation that above-mentioned optical sheet holding surface is isolated by above-mentioned optical sheet, above-mentioned adhesive sheet abutted with the sidewall of aforesaid substrate platform before contacting with aforesaid substrate, and the power making above-mentioned adhesive sheet press aforesaid substrate weakens or disappears.
10. an optical sheet laminating apparatus, utilizes bonding force to be remained in the optical sheet holding surface of curvature head by optical sheet, and above-mentioned curvature head is rotated on substrate, thus fits on aforesaid substrate by above-mentioned optical sheet, it is characterized in that,
Above-mentioned optical sheet laminating apparatus comprises: the curvature head with the optical sheet holding surface bending to convex; With the adhesive sheet be arranged in above-mentioned optical sheet holding surface,
Above-mentioned adhesive sheet has: the 1st region, and the 1st region has the bonding force that can be kept optical sheet by laminating operation; With the 2nd region, the 2nd region has the bonding force more weak than the bonding force in above-mentioned 1st region,
After making the back side integral adhesive of above-mentioned optical sheet on aforesaid substrate, when above-mentioned curvature head being rotated further and is isolated from above-mentioned optical sheet holding surface by above-mentioned optical sheet, make the 2nd region being arranged on the above-mentioned adhesive sheet in above-mentioned optical sheet holding surface relative with aforesaid substrate.
11. 1 kinds of adhesive sheets, is characterized in that,
The back side has cementability, utilizes this cementability can bond in the optical sheet holding surface of curvature head,
Front has cementability, this front possesses the 1st region and the 2nd region, above-mentioned 1st region is formed and has relatively strong bonding force on the position relative with optical sheet that is temporary fixed and that keep, the outside being positioned at the scope relative with above-mentioned optical sheet at least partially in above-mentioned 2nd region, and the 2nd region has relatively weak bonding force.
12. adhesive sheets according to claim 11, wherein,
The bonding force in the 1st region of above-mentioned adhesive sheet is that rolling ball method tack is tested less than 240mm, and the bonding force in the 2nd region of above-mentioned adhesive sheet is rolling ball method tack test more than 240mm.
13. adhesive sheets according to claim 11 or 12, wherein,
Above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape along the one article of limit being positioned at rear relative to the direction of rotating of above-mentioned adhesive sheet.
14. adhesive sheets according to claim 11 or 12, wherein,
Above-mentioned adhesive sheet is rectangle, by above-mentioned 2nd region being positioned at front and being configured to band shape relative to the direction of rotating respectively with two articles of relative limits at rear along above-mentioned adhesive sheet.
15. adhesive sheets according to claim 11 or 12, wherein,
Above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to band shape respectively along the four edges of above-mentioned adhesive sheet.
16. adhesive sheets according to claim 11 or 12, wherein,
Above-mentioned adhesive sheet is rectangle, and above-mentioned 2nd region is configured to banded and same heart shaped respectively along the four edges of above-mentioned adhesive sheet.
17. adhesive sheets according to claim 11, wherein,
Above-mentioned adhesive sheet is divided into self relatively strong above-mentioned 1st region of bonding force and relatively weak above-mentioned 2nd region of bonding force.
18. adhesive sheets according to claim 11, wherein,
The entirety of above-mentioned adhesive sheet is formed as relatively strong above-mentioned 1st region of bonding force, by installing bonding force relatively weak illusory and form above-mentioned 2nd region in its part.
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