CN1146749C - Optical film overlapping element - Google Patents
Optical film overlapping element Download PDFInfo
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- CN1146749C CN1146749C CNB991221303A CN99122130A CN1146749C CN 1146749 C CN1146749 C CN 1146749C CN B991221303 A CNB991221303 A CN B991221303A CN 99122130 A CN99122130 A CN 99122130A CN 1146749 C CN1146749 C CN 1146749C
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- blooming
- optical film
- film overlapped
- optical axis
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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
- G02B5/3083—Birefringent or phase retarding elements
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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
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/42—Polarizing, birefringent, filtering
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
Abstract
The present invention provides an optical film laminated body, which is characterized in laminating the first optical film and the second optical film, and includes: two sides parallel to each other and parallel or perpendicular to the optical axis of the second optical film; a side oblique to the two sides and parallel to the optical axis of the first optical film; and another side not parallel to the optical axis of the first optical film. With the optical film laminated body, the optical axis of the first optical film and the optical axis of the second optical film can be easily identified.
Description
Technical field
The present invention relates to optical film overlapped body.
Background technology
The blooming that with polarizing coating, phase retardation film etc. is representative is very important as the optical element that constitutes liquid crystal indicator.
Mostly be under the situations with two or more so optical film overlapped, be installed in the liquid crystal indicator and use, for example in STN (Super Twisted Nenatie) type liquid crystal indicator etc., the square optical film overlapped chip that first blooming (for example polarizing coating) and second blooming (for example phase retardation film) are piled up is installed under the situations mostly.
In so square optical film overlapped chip (10), the optical axis of polarizing coating is that the optical axis of absorption axes (1) or phase retardation film be the direction of slow axis (2) in liquid crystal indicator for the display performance of the liquid crystal indicator that is obtained is important, when even these directions depart from the design load of regulation a little, this liquid crystal indicator just can not be brought into play the performance as purpose.Therefore, the absorption axes (1) that needs these polarizing coatings of strict control in optical film overlapped chip with respect to the slow axis (2) of the angle (θ 1) of the datum line (9) of optical film overlapped chip (10) and phase retardation film with respect to the angle (θ 2) of the datum line (9) of optical film overlapped chip (10) (Figure 11).
As shown in figure 11, here, the angle (θ 1) of so-called absorption axes (1), be meant when polarizing coating one side is seen absorption axes (1) with respect to the angle of the datum line (9) of optical film overlapped chip (10) with counterclockwise rotation to angle for just representing, the angle (θ 2) of so-called slow axis (2), be meant when polarizing coating one side is seen slow axis (2) with respect to the angle of the datum line (9) of optical film overlapped chip with counterclockwise rotation to angle, all be represented as more than 0 °, below 180 ° for just representing.Datum line (9) usually select with the reference edge (90) of square optical film overlapped chip, promptly with the direction parallel (Figure 11) of growing the limit or parallel with the direction of minor face.
In addition, square optical film overlapped chip (10) though size can suitably select according to size as the liquid crystal indicator of target, its size for example is long limit 30mm * minor face 20mm～length limit 300mm * minor face 200mm.
Square optical film overlapped chip like this can adopt such method manufacturing: for example with the polarizing coating of band shape and banded phase retardation film as raw material, cut out square polarizing coating chip and square phase retardation film chip respectively independently from these raw materials, get up with polarizing coating chip that these are square such as bonding agent and square phase retardation film die bonding.The polarizing coating and the banded phase retardation film of the band shape of using as starting material generally are that polarizing coating and phase retardation film for example can be to twist in the state supply on the cylinder as starting material arbitrarily.
In so optical film overlapped chip, even be installed in optical film overlapped chip in different types of liquid crystal indicator, the slow axis (2) of phase retardation film is identical with respect to the relative angle (θ) of the absorption axes (1) of polarizing coating under the situations mostly.Here so-called relative angle (θ), be according to the absorption axes of polarizing coating with respect to the slow axis of the angle (θ 1) of the datum line (9) of optical film overlapped chip and phase retardation film angle (θ 2) with respect to the datum line (9) of optical film overlapped chip, the angle of calculating by following calculating formula (I).
θ＝θ2-θ1 (I)
; in manufacture method via above-mentioned polarizing coating chip and phase retardation film chip; even the relative angle (θ) of the optical film overlapped body chip that is obtained for example is identical; if but the size of this optical film overlapped body chip or absorption axes be with respect to the slow axis of the angle (θ 1) of datum line (9) and phase retardation film angle (θ 2) difference with respect to datum line (9), then there is can not the migrate problem of manufacturing of optical film overlapped body chip of other liquid crystal indicators of this method.
As the method that solves such problem, for example, as Figure 12 (a), shown in Figure 12 (b), can consider following method: the optical film overlapped body of making a kind of parallelogram, it is two limit (FG with the absorption axes (1) that is parallel to polarizing coating, EH), and two limit (EF of parallel with the slow axis (2) of phase retardation film (Figure 12 (a)) or vertical (Figure 12 (b)), HG) optical film overlapped body (8), with it as intermediate, according to its size in length and breadth, the angle of absorption axes (θ 1), the angle of slow axis (θ 2) cuts out optical film overlapped chip as target from above-mentioned intermediate.
If adopt this manufacture method, then in the optical film overlapped body (8) of parallelogram, one group of opposite side (FG in two groups of opposite side of formation parallelogram, EH) parallel with the absorption axes (1) of polarizing coating, another group opposite side (EF, HG) with direction parallel (Figure 12 (a)) or vertical (Figure 12 (b)) of the slow axis (2) of phase retardation film, so this optical film overlapped body (8) has two limit (FG with following angle of intersection, HG), this angle is angle (θ) (Figure 12 (a)) or the angle (θ-90 °) (Figure 12 (b)) identical with respect to the relative angle (θ) of the absorption axes (1) of polarizing coating with the slow axis (2) of phase retardation film.Therefore, the size of ∠ HGF (angle φ) is angle θ or angle (θ-90 °), also can judge this angle θ or (θ-90 °) according to the shape of parallelogram.
Therefore, if adopt manufacture method via the optical film overlapped body (8) of this parallelogram, then since from polarizing coating and phase retardation film in advance the optical film overlapped body (8) of the overlapping parallelogram of in accordance with regulations relative angle (θ) cut out optical film overlapped chip as target, so can make multiple optical film overlapped chip from a kind of optical film overlapped body (8), for example above-mentioned relative angle (θ) is identical, the different multiple optical film overlapped chip of size, or above-mentioned relative angle (θ) in length and breadth and measure-alike in length and breadth, just the absorption axes (1) of polarizing coating is with respect to the slow axis (2) of the angle (θ 1) of datum line (9) and the phase retardation film different multiple optical film overlapped chip of angle (θ 2) with respect to datum line (9).Its result can be taken care of the optical film overlapped body of this parallelogram, managed as the general intermediate of multiple optical film overlapped chip, thus laborsaving in stock control, can seek further to boost productivity.
; under the situation of the optical film overlapped body of such parallelogram; in practical operation; with the naked eye be not easy to judge in two groups of parallel opposite side that constitute parallelogram; which group is parallel with the absorption axes (1) of polarizing coating; which group is parallel or vertical with the slow axis (2) of phase retardation film, might be mistaken the direction of the direction of absorption axes (1) and slow axis (2).
Summary of the invention
Therefore, the present inventor has carried out the result of research with keen determination to developing the optical film overlapped body that can not make a mistake the direction of the slow axis (2) of the direction of the absorption axes of polarizing coating (1) and phase retardation film and can easily judge, two parallel limits of having found optical film overlapped body are parallel or vertical with the slow axis of phase retardation film, a limit is parallel with the absorption axes of polarizing coating, not parallel with the absorption axes of the polarizing coating optical film overlapped physical efficiency in another limit is easily judged the absorption axes of polarizing coating and the slow axis of phase retardation film, has reached purpose of the present invention.
Promptly, the invention provides a kind of optical film overlapped body, it is characterized in that: first blooming and the second blooming overlaid have: the parallel to each other both sides parallel or vertical with the optical axis of second blooming, with respect to this both sides tilt, one side parallel and with respect to the uneven another side of the optical axis of first blooming with the optical axis of first blooming; Described first blooming is a polarizing coating, and second blooming is a phase retardation film.
Description of drawings
Fig. 1, Fig. 2, Fig. 9 and Figure 10 are the mode charts of the example of expression optical film overlapped body of the present invention.
Fig. 3 and Fig. 6 are the mode charts of one of the manufacturing process of expression optical film overlapped body of the present invention example.
Fig. 4, Fig. 5, Fig. 7 and Fig. 8 are one of the manufacturing process example of optical film overlapped body of the present invention is made in expression from the optical film overlapped system of parallelogram mode charts.
Figure 11 is the mode chart of the relation between the optical axis of the optical axis of datum line, first blooming of the square optical film overlapped chip of expression and second blooming.
Figure 12 is the mode chart of the relation between the optical axis of the optical axis of first blooming of optical film overlapped body of expression parallelogram and second blooming.
The mode chart of one of the method for Figure 13 and Figure 14 to be expression from optical film overlapped body of the present invention along on one side (AD) cut out square optical film overlapped body chip example.
The explanation of symbol
1: the absorption axes of polarizing coating (optical axis of first blooming)
2: the slow axis of phase retardation film (optical axis of second blooming)
3: optical film overlapped body
4: banded polarizing coating (banded first blooming)
5: the polarizing coating (first blooming of inserted sheet shape) of section shape
6: banded phase retardation film (the second banded blooming)
7: the optical film overlapped body of the band shape that the polarizing coating (first blooming of inserted sheet shape) of section shape and banded phase retardation film (the second banded blooming) are piled up
8: the optical film overlapped body of parallelogram
9: the datum line of optical film overlapped chip
90: the reference edge of optical film overlapped body chip
10: optical film overlapped chip
C1: line of cut
C2: line of cut
C3: line of cut
θ 1: the absorption axes of polarizing coating (optical axis of first blooming) is with respect to the angle of the datum line of optical film overlapped chip
θ 2: the slow axis of phase retardation film (optical axis of second blooming) is with respect to the angle of the datum line of optical film overlapped chip
θ: the slow axis of phase retardation film (optical axis of second blooming) is with respect to the relative angle (θ 2-θ 1) of the absorption axes (optical axis of first blooming) of polarizing coating
φ: line of cut (C1) is with respect to the angle of the length direction of banded polarizing coating (the first banded blooming)
φ 2: line of cut (C3) is with respect to the angle of two rims of the phase retardation film (the second banded blooming) of band shape
Embodiment
Fig. 1 (a) and (b) and (c) and Fig. 2 (a) and (b) and (c) in, show one of optical film overlapped body of the present invention example.
Fig. 1 (a) and (b) and (c) respectively the example of optical film overlapped body (3) of expression be both sides (AB, DC) the parallel to each other parallel examples of optical axis (2) with respect to second blooming, the expression upper base (AB) and (DC) the trapezoidal optical film overlapped body (3) parallel of going to the bottom with the optical axis (2) of second blooming.
Optical film overlapped body (3) like this is polarizing coating and the equitant structure of phase retardation film.Here, polarizing coating is equivalent to first blooming, and phase retardation film is equivalent to second blooming.Polarizing coating and phase retardation film are piled up by common adhesive linkage.Adopt the isotropic adhesive linkage of transparent optical that for example constitutes by acrylic compounds pressure sensitive bonding agent bonding agents such as (binders) as adhesive linkage.
In so optical film overlapped body (3), upper base (AB) and go to the bottom (DC) are equivalent to both sides parallel to each other.The length of upper base (AB) for example is about 50mm～1000mm, and the length of go to the bottom (DC) is for example for about 500mm～1500mm.
So in addition optical film overlapped body (3) has hypotenuse (BC), and this hypotenuse (BC) is the one side that tilts with respect to above-mentioned both sides (AB, DC) parallel to each other, is equivalent to be neither parallel nor perpendicular to the one side on these both sides.The length of this hypotenuse (BC) for example is about 500mm～2000mm.
The optical axis (1) of this hypotenuse (BC) and first blooming, promptly parallel with the absorption axes of polarizing coating.The optical axis (2) of upper base (AB) and go to the bottom (DC) and second blooming, promptly parallel with the slow axis of phase retardation film.Therefore, the angle (φ) that constitutes of the hypotenuse of optical film overlapped body (BC) and go to the bottom (DC), be that ∠ DCB becomes and the slow axis (2) of the phase retardation film identical angle of relative angle (θ) with respect to the absorption axes (1) of polarizing coating.
Therefore, in this embodiment, the absorption axes of polarizing coating (1) expression hypotenuse, the slow axis of phase retardation film (2) expression both sides parallel to each other, promptly represent upper base (AB) and go to the bottom (DC), so can easily differentiate the direction of the slow axis (2) of the direction of absorption axes (1) of polarizing coating and phase retardation film, the possibility that their direction is mistaken is also little.In addition, relative angle (θ) the expression hypotenuse (BC) and the angle (φ) of (DC) formation of going to the bottom, promptly represent ∠ DCB.
In addition, Fig. 1 (a) and (b) and (c) in respectively the optical film overlapped body of expression the another side (AD) of the optical axis (1) that is not parallel to first blooming is arranged, the extending direction of this another side (AD) is with respect to the direction configuration example of the optical axis of first blooming angle as 1 °～179 ° of scopes.The length of this another side (AD) for example is about 500mm～2000mm.
In the optical film overlapped body shown in Fig. 1 (a), this another side (AD) is perpendicular to upper base (AB) and go to the bottom (DC), promptly perpendicular to parallel both sides.Therefore, hypotenuse (BC) can be easily known, and then the optical axis of first blooming can be differentiated more easily.
In addition, reach in the example of (c) representing respectively at these Fig. 1 (a) and (b), at relative angle (θ) during during less than 40 ° or greater than 140 °, the trapezoidal elongated shape that is, the processing of optical film overlapped body is had any problem, so θ is preferably in more than 40 °, below 140 °, just better more than 45 °, below 135 °.In addition, angle (φ) is 90 °, generally, except limit (BC) can not being identified with hypotenuse, particularly on the limit (AD) perpendicular to the length of upper base (AB) and go to the bottom (DC), limit (AD) and upper base (AB) when identical, can not distinguish upper base (AB) and this one side (AD), thus angle (φ), be ∠ DCB preferably less than 90 ° or greater than 90 °, so relative angle (θ) is less than 90 ° or get final product greater than 90 °.In addition, in fact angle (φ), be relative angle (θ) if below 89 ° or more than 91 °, then can discern limit (BC) for hypotenuse.
Example when at Fig. 2 (a) and (b) and (c) example of optical film overlapped body (3) of expression is both sides (AB, DC) parallel to each other perpendicular to the optical axis (2) of second blooming respectively, expression upper base (AB) and go to the bottom (DC) trapezoidal optical film overlapped body (3) vertical with the optical axis (2) of second blooming.
Optical film overlapped body (3) like this is polarizing coating and the equitant structure of phase retardation film.Here, polarizing coating is equivalent to first blooming, and phase retardation film is equivalent to second blooming.Polarizing coating and phase retardation film are piled up by common adhesive linkage.Adopt the isotropic adhesive linkage of transparent optical that for example constitutes by acrylic compounds pressure sensitive bonding agent bonding agents such as (binders) as adhesive linkage.
In so optical film overlapped body (3), upper base (AB) and go to the bottom (DC) are equivalent to both sides parallel to each other.The length of upper base (AB) for example is about 50mm～1000mm, and the length of go to the bottom (DC) is for example for about 500mm～1500mm.
Hypotenuse (BC) is arranged in addition, and this hypotenuse (BC) is the one side that tilts with respect to above-mentioned both sides (AB, DC) parallel to each other, is equivalent to be neither parallel nor perpendicular to the one side on these both sides.The length of this hypotenuse (BC) for example is about 500mm～2000mm.
The optical axis (1) of hypotenuse (BC) and first blooming, promptly parallel with the absorption axes of polarizing coating.Upper base (AB) and go to the bottom (DC) are with the optical axis of second blooming, promptly the slow axis (2) with phase retardation film is vertical.Therefore, (not shown) line that is parallel to this slow axis (2) by summit C is perpendicular to go to the bottom (DC), and is should (not shown) line consistent with the obtuse angle and the angle (θ) of hypotenuse (BC) formation.Therefore, the angle (φ) that constitutes of the hypotenuse of optical film overlapped body (BC) and go to the bottom (DC), be that ∠ DCB becomes and (θ-90 °) identical angle.
Therefore, in this embodiment, the absorption axes of polarizing coating (1) expression hypotenuse (BC), the direction indication of the slow axis of phase retardation film (2) is perpendicular to the direction of the upper base and the line of going to the bottom, so can easily differentiate the direction of the slow axis (2) of the direction of absorption axes (1) of polarizing coating and phase retardation film, the possibility that their direction is mistaken is also little.In addition, relative angle (θ) can be according to the angle (φ) of the hypotenuse (BC) and (DC) formation of going to the bottom, and (II) calculates by formula.
θ＝φ+90° (II)
In addition, Fig. 2 (a) and (b) and (c) in respectively the optical film overlapped body of expression the another side (AD) of the optical axis (1) that is not parallel to first blooming is arranged, the extending direction of this another side (AD) is with respect to the direction configuration example of the optical axis of first blooming angle as 1 °～179 ° of scopes.The length of this another side (AD) for example is about 500mm～2000mm.
In the optical film overlapped body shown in Fig. 2 (a), this another side (AD) is perpendicular to upper base (AB) and go to the bottom (DC), promptly perpendicular to both sides parallel to each other.Therefore, hypotenuse (BC) can be easily known, and then the optical axis of first blooming can be differentiated more easily.
In addition, reach in the example of (c) representing respectively at these Fig. 2 (a) and (b), if relative angle (θ) greater than 50 °, less than 130 °, then angle (φ) is less than 40 ° or greater than 140 °, the trapezoidal elongated shape that is, the processing of optical film overlapped body is had any problem, so θ is preferably in below 50 ° or more than 130 °, below 45 ° or just better more than 135 °.In addition, angle (φ) is 90 °, generally, except limit (BC) can not being identified with hypotenuse, particularly on the limit (AD) perpendicular to the length of upper base (AB) and go to the bottom (DC), upper base (AB) and limit (AD) when identical, can not distinguish upper base (AB) and this one side (AD), thus angle (φ) preferably less than 90 ° or greater than 90 °, so relative angle (θ) is less than 180 ° or get final product greater than 0 °.In addition, if in fact angle (φ) is below 89 ° or more than 91 °, then can discerns limit (BC) and be hypotenuse, so relative angle (θ) is getting final product below 179 ° or more than 1 °.
Though the of the present invention optical film overlapped body of Figure 1 and Figure 2 is quadrilateral (trapezoidal) shape, optical film overlapped body of the present invention is not limited to quadrilateral, for example in its four summits (A, B, C, D), and also can a damaged at least summit.
For example, optical film overlapped body of the present invention such as Fig. 9 and shown in Figure 10, a summit (C) that is tetragonal optical film overlapped body of Figure 1 and Figure 2 is damaged, and one side that is parallel to another side (AD) (C ' C ") can also be arranged again.Cut an one summit (C) from tetragonal optical film overlapped body, can easily make so optical film overlapped body.
In order to obtain square optical film overlapped chip (10) from so of the present invention optical film overlapped body (3), can according to as the absorption axes of the size in length and breadth of the optical film overlapped chip of target and polarizing coating with respect to the slow axis of the angle (θ 1) of datum line or phase retardation film angle (θ 2) with respect to datum line, cut off optical film overlapped body (3), cut out square optical film overlapped chip.The method that cuts out does not limit especially, for example cuts off with punching tool etc., also can cut out.
Here, under situation about equating with respect to the angle of another side (AD) with respect to the angle of another side (AD) or slow axis (2) with respect to the absorption axes (1) of the angle (θ 2) of reference edge (90) and optical film overlapped body (8) with respect to the angle (θ 1) of reference edge (90) or slow axis (2) as the absorption axes (1) of the square optical film overlapped chip of target, promptly, be parallel in the direction of the reference edge (90) of square optical film overlapped chip under the situation of direction of this another side (AD), as Figure 13 and shown in Figure 14, can be from this another side (AD), along this another side (AD), cut out square optical film overlapped body chip (10).
In order to make so of the present invention optical film overlapped body (3) from the polarizing coating (the first banded blooming) (4) of band shape and banded phase retardation film (the second banded blooming) (6), the polarizing coating of band shape and banded phase retardation film are cut into trapezoidal back respectively to be pasted to get up to get final product, but, preferably adopt following method manufacturing as Fig. 3 or shown in Figure 6:
(i) set cut-out line (C1) like this, the slow axis (optical axis of second blooming) (2) that promptly should cut off angle (φ) that line (C1) constitutes with respect to the length direction of the polarizing coating (the first banded blooming) (4) of band shape and the phase retardation film of optical film overlapped body (3) with respect to the relative angle (θ) of the absorption axes (optical axis of first blooming) (1) of polarizing coating (Fig. 3) or (θ-90 °) (Fig. 6) equate, cut off banded polarizing coating (4) along cutting off line (C1), cut out the polarizing coating (5) of section shape, it has absorption axes (optical axis of first blooming) (1) with respect to polarizing coating to constitute the parallel both sides (FE of above-mentioned angle (φ), GH), form the width parallelogram about equally of distance and the phase retardation film (6) of band shape between these both sides
The above-mentioned both sides (FE, GH) of polarizing coating (5) that (ii) make the section shape are along two rims (IJ, KL) of the phase retardation film of band shape, the polarizing coating (5) of the section shape that obtained is overlapped on the banded phase retardation film (6), the optical film overlapped body (7) of the band shape on the superimposed phase retardation film of polarizing coating (5) (6) of acquisition section shape in band shape
(iii) along the cut-out line (C2) along the shape of the polarizing coating (5) of overlapping section shape, the optical film overlapped body (7) that cuts off the band shape that is obtained obtains the optical film overlapped body (8) of polarizing coating and the equitant parallelogram of phase retardation film,
(iv) cut off the optical film overlapped body (8) of the parallelogram that is obtained.
In such manufacture method, as shown in Figure 3, cut out to have from the polarizing coating (4) of band shape and constitute polarizing coating (5) with the section shape of the parallelogram on the parallel both sides of angle (θ) angle same (φ) with respect to its length direction, in the case, have the phase retardation film (6) of the phase retardation film of the slow axis parallel (2) if use, then can obtain both sides parallel to each other (upper base (AB) and go to the bottom (DC)) the trapezoidal optical film overlapped body (3) parallel with the slow axis (2) of phase retardation film as band shape with its length direction.
The optical film overlapped body (8) of parallelogram is to be that the cut-out line (C3) of φ 2 cuts off along the angle with respect to two rims (IJ, KL) of the phase retardation film of band shape, but be that one side (AD) of the optical film overlapped body (3) that is obtained perpendicular to both sides parallel to each other (AB, DC) (Fig. 3) under 90 ° the situation cutting off the angle (φ 2) of line (C3) here with respect to two rims (IJ, KL) of the phase retardation film of band shape.In addition, this angle (φ 2) is sometimes greater than 90 ° (Fig. 4), sometimes less than 90 ° (Fig. 5).
In this angle (φ 2) (Fig. 3, Fig. 4, Fig. 5) under the situation of (180 °-θ 2), one side (AD) of the trapezoidal optical film overlapped body (3) that is obtained is parallel with the reference edge (90) as the optical film overlapped body chip (10) of its target, so can this one side (AD) cut out the line of optical film overlapped body chip (10) to start with.
On the other hand, as shown in Figure 6, cut out to have from the polarizing coating (4) of band shape and constitute polarizing coating (5) with the section shape of the parallelogram on the parallel both sides of angle (θ-90 °) angle same (φ) with respect to its length direction, in the case, have the phase retardation film (6) of the phase retardation film of the slow axis vertical (2) if use, then can obtain both sides parallel to each other (upper base (AB) and go to the bottom (DC)) the trapezoidal optical film overlapped body (3) vertical with the slow axis (2) of phase retardation film as band shape with its length direction.
Here be that one side (AD) of the optical film overlapped body (3) that is obtained perpendicular to both sides parallel to each other (AB, DC) (Fig. 6) under 90 ° the situation cutting off the angle (φ 2) of line (C3) with respect to two rims (IJ, KL) of the phase retardation film of band shape.In addition, this angle (φ 2) is sometimes greater than 90 ° (Fig. 7), sometimes less than 90 ° (Fig. 8).
In this angle (φ 2) (Fig. 6, Fig. 7, Fig. 8) under the situation of (270 °-θ 2), one side (AD) of the trapezoidal optical film overlapped body (3) that is obtained is parallel with the reference edge (90) as the optical film overlapped body chip (10) of its target, so can this one side (AD) cut out the line of optical film overlapped body chip (10) to start with.
In addition, the position of the cut-out line (C3) of the optical film overlapped body (8) of parallelogram can at random be set, if but select to cut off the center of gravity of line by this overlapping body (8), then can obtain two optical film overlapped bodies (3) that shape is identical.
In addition, in optical film overlapped body of the present invention, polarizing coating (first blooming) and phase retardation film (second blooming) are usually by the bond layer overlaid, but such bond layer can set in advance on the one side of the polarizing coating (the first banded blooming) (4) in band shape usually.
When the shape of optical film overlapped body of the present invention is trapezoidal, the optical axis of first blooming is represented as constituting trapezoidal hypotenuse, the optical axis of second blooming is as the upper base and the expression of going to the bottom, or as representing with the upper base and the vertical limit of going to the bottom, so the optical axis of first blooming and the optical axis of second blooming can not made a mistake, its result can cut out square optical film overlapped chip with higher throughput rate.
Claims (7)
1. optical film overlapped body is characterized in that:
First blooming and the second blooming overlaid have:
With the parallel or vertical both sides parallel to each other of the optical axis of second blooming;
With respect to this both sides tilt, one side parallel with the optical axis of first blooming; And
With respect to the uneven another side of the optical axis of first blooming;
Described first blooming is a polarizing coating, and second blooming is a phase retardation film.
2. optical film overlapped body according to claim 1 is characterized in that: with respect to the uneven another side of the optical axis of first blooming perpendicular to both sides parallel to each other.
3. optical film overlapped body according to claim 1 is characterized in that: it is to cut out the optical film overlapped body that first blooming and the equitant square optical film overlapped body chip of second blooming are used,
The reference edge that is parallel to optical film overlapped body chip with respect to the uneven another side of the optical axis of first blooming.
4. optical film overlapped body according to claim 1 is characterized in that: both sides parallel to each other are parallel with the optical axis of second blooming, and the optical axis of second blooming is more than 40 °, below 140 ° with respect to the relative angle θ of the optical axis of first blooming.
5. optical film overlapped body according to claim 1, it is characterized in that: both sides parallel to each other are vertical with the optical axis of second blooming, the optical axis of second blooming with respect to the relative angle θ of the optical axis of first blooming greater than 0 °, less than 50 ° or greater than 130 °, less than 180 °.
6. the manufacture method of an optical film overlapped body, described optical film overlapped body has:
First blooming and the second blooming overlaid have:
With the parallel or vertical both sides parallel to each other of the optical axis of second blooming;
With respect to this both sides tilt, one side parallel with the optical axis of first blooming and
With respect to the uneven another side of the optical axis of first blooming;
Described first blooming is a polarizing coating, and second blooming is a phase retardation film.
It is characterized in that this method may further comprise the steps:
(i) set like this cut-out line; The optical axis that namely should cut off angle φ that line consists of with respect to the length direction of first blooming of band shape and second blooming of above-mentioned optical film overlapping element equates with respect to the relative angle θ of the optical axis of first blooming or θ-90 °; Cut off line along this and cut off the first banded blooming; Cut out first blooming of section shape; It has the parallel both sides that consist of above-mentioned angle φ with respect to the optical axis of first blooming; Form the parallelogram that the distance between these both sides equates with the width of second blooming of band shape
The above-mentioned both sides of first blooming that (ii) make the section shape are along two rims of second blooming of band shape, first optical film overlapped on second blooming of band shape with the section shape that obtained, obtain the optical film overlapped body of the superimposed band shape on second blooming of band shape of first blooming of section shape
(iii) along the cut-out line of the shape of first blooming of overlapping section shape, the optical film overlapped body that cuts off the band shape that is obtained obtains the optical film overlapped body of first blooming and the equitant parallelogram of second blooming,
(iv) cut off the optical film overlapped body of the parallelogram that is obtained.
7. the manufacture method of optical film overlapped body according to claim 6, it is characterized in that: along the angle with respect to two rims of second blooming of band shape is the optical film overlapped body that the cut-out line that equals the angle φ 2 of 180 °-θ 2 or 270 °-θ 2 cuts off parallelogram, here, θ 2 is second optical axis angles with respect to the reference edge of optical film overlapped body chip.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP289359/98 | 1998-10-12 | ||
| JP28935998 | 1998-10-12 | ||
| JP289359/1998 | 1998-10-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1250882A CN1250882A (en) | 2000-04-19 |
| CN1146749C true CN1146749C (en) | 2004-04-21 |
Family
ID=17742193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991221303A Expired - Lifetime CN1146749C (en) | 1998-10-12 | 1999-10-11 | Optical film overlapping element |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100912860B1 (en) |
| CN (1) | CN1146749C (en) |
| TW (1) | TWI221538B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4493273B2 (en) * | 2003-01-29 | 2010-06-30 | 日東電工株式会社 | Double-sided adhesive sheet and display device with touch panel |
| JP5221164B2 (en) * | 2008-02-15 | 2013-06-26 | 日東電工株式会社 | Method for producing optical film laminate |
| JP4918530B2 (en) * | 2008-07-30 | 2012-04-18 | 日東電工株式会社 | Method for producing optical film laminate |
| CN102565913A (en) * | 2012-02-07 | 2012-07-11 | 深圳市三利谱光电科技股份有限公司 | Production method for trapezoid polarizing sheets |
| JP6108577B1 (en) * | 2016-03-22 | 2017-04-05 | 住友化学株式会社 | Method for producing laminated film |
| KR102651055B1 (en) | 2016-03-24 | 2024-03-26 | 삼성디스플레이 주식회사 | Optical film and display apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06289221A (en) * | 1993-03-31 | 1994-10-18 | Arisawa Mfg Co Ltd | Production of elliptically polarizing plate |
-
1999
- 1999-10-02 TW TW088117023A patent/TWI221538B/en not_active IP Right Cessation
- 1999-10-08 KR KR1019990043424A patent/KR100912860B1/en active IP Right Grant
- 1999-10-11 CN CNB991221303A patent/CN1146749C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000028932A (en) | 2000-05-25 |
| KR100912860B1 (en) | 2009-08-19 |
| CN1250882A (en) | 2000-04-19 |
| TWI221538B (en) | 2004-10-01 |
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