KR100912860B1 - Optical film laminates and process for preparing the same - Google Patents

Abstract

The first optical film and the second optical film are laminated, two parallel sides that are parallel or perpendicular to the optical axis of the second optical film, inclined with respect to the two sides, and with respect to the optical axis of the first optical film. An optical film laminate is provided having one side that is parallel and the other side that is not parallel to the optical axis of the first optical film.

The said optical film laminated body can distinguish easily the direction of the optical axis of a 1st optical film, and the direction of the optical axis of a 2nd optical film.

First optical film, second optical film, optical axis, optical film laminate, relative angle,

Description

Optical film laminates and process for preparing the same {Optical film laminates and process for preparing the same}

1, 2, 9 and 10 are schematic diagrams showing an example of the optical film laminate of the present invention.

FIG.3 and FIG.6 is a schematic diagram which shows an example of the manufacturing process of the optical film laminated body of this invention.

4, 5, 7 and 8 are schematic diagrams showing an example of a step of producing the optical film laminate of the present invention from an optical film laminate of parallelogram.

It is a schematic diagram which shows the relationship of the reference line in the rectangular optical film laminated chip, the optical axis of a 1st optical film, and the optical axis of a 2nd optical film.

It is a schematic diagram which shows the relationship between the optical axis of the 1st optical film and the optical axis of a 2nd optical film in the parallelogram optical film laminated body.

It is a schematic diagram which shows an example of the method of cutting out the rectangular optical film laminated body chip along one side AD from the optical film laminated body of this invention.

Explanation of the sign

1: Absorption axis of the polarizing film (optical axis of the first optical film)

2: slow axis of retardation film (optical axis of second optical film)

3: optical film laminate

4: strip-shaped polarizing film (strip-shaped first optical film)

5: polarizing film on cut sheet (1st optical film on cut sheet)

6: strip-shaped retardation film (strip-shaped second optical film)

7: A strip | belt-shaped optical film laminated body in which the polarizing film (cut sheet-shaped 1st optical film) of cut sheet, and strip | belt-shaped retardation film (strip-shaped 2nd optical film) were laminated | stacked.

8: parallelogram optical film laminate

9: baseline of optical film stacking chip

90: reference edge in the optical film laminate chip

10: optical film lamination chip

C1: cutting line

C2: cutting line

C3: cutting line

θ1: angle of the absorption axis (optical axis of the first optical film) of the polarizing film with respect to the reference line of the optical film laminated chip

θ2: angle of the slow axis of the retardation film (optical axis of the second optical film) with respect to the reference line of the optical film laminated chip

θ: relative angle (θ2-θ1) of the slow axis of the retardation film (the optical axis of the second optical film) with respect to the absorption axis of the polarizing film (the optical axis of the first optical film)

ø: angle of cutting line C1 with respect to the longitudinal direction of the strip-shaped polarizing film (strip-shaped first optical film)

ø2: angle of cutting line C3 with respect to both edges of a strip-shaped retardation film (strip-shaped second optical film)

The present invention relates to an optical film laminate.

The optical film represented by a polarizing film, retardation film, etc. is important as an optical component which comprises a liquid crystal display device.

Such optical films are often laminated and used in a liquid crystal display device in which two or more kinds thereof are stacked. For example, in a STN (Super Twisted Nematic) type liquid crystal display device, the first optical film (for example, a polarizing film) and In many cases, a second optical film (for example, a retardation film) is introduced as a rectangular optical film lamination chip in which the second optical film is stacked.

In this rectangular optical film laminated chip 10, the direction in the liquid crystal display device of the optical axis of the polarizing film, that is, the absorption axis 1 or the optical axis of the retardation film, that is, the slow axis 2, It is important for display performance, and when they deviate even a little from a predetermined design value, a liquid crystal display device cannot exhibit the target performance. For this reason, the angle (theta) 1 of the absorption axis 1 of the polarizing film with respect to the reference line 9 of the optical film laminated chip 10, or the angle (theta) 2 of the slow axis 2 of the retardation film is It needs to be strictly managed in (Fig. 11).

As shown in FIG. 11, in the present application, the angle θ1 of the absorption axis refers to the angle of the absorption axis 1 with respect to the reference line 9 in the optical film laminated chip 10 as viewed from the polarizing film side. It is an angle shown as positive, and the angle (theta) 2 of a slow axis is a positive (+) counterclockwise rotation by viewing the angle of the slow axis 2 with respect to the reference line 9 in an optical film laminated chip from the polarizing film side. The angles shown as are indicated to be either 0 ° or less than 180 °. The reference line 9 is usually selected in parallel with the reference side 90 of the rectangular optical film laminated chip, that is, in the direction of the long side (FIG. 11) or in parallel with the direction of the short side.

In addition, although the size of the rectangular optical film laminated chip 10 is suitably selected according to the magnitude | size of the target liquid crystal display device, it is about long side 30mm x short side 20mm-long side 300mm x short side 200mm, for example.

Such a rectangular optical film laminated chip is made from, for example, a band-shaped polarizing film and a band-shaped retardation film as raw materials. It can manufacture by the method of bonding a film chip and a rectangular retardation film chip with an adhesive etc. The strip-shaped polarizing film and strip | belt-shaped retardation film used as a raw material are all common as raw materials of a polarizing film and retardation film, For example, it is supplied in the state wound on the roll.

In such an optical film lamination chip, even when introduced into another kind of liquid crystal display device, the relative angle θ of the slow axis θ2 of the retardation film with respect to the absorption axis θ1 of the polarizing film is often the same. Here, the relative angle θ is the angle θ calculated by Equation 1 from the angle θ1 of the absorption axis of the polarizing film with respect to the reference line 9 in the optical film laminated chip and the angle θ2 of the slow axis of the retardation film. to be.

θ = θ2-θ1

By the way, in the manufacturing method via said polarizing film chip and retardation film chip, even if the relative angle (theta) of the obtained optical film laminated chip is the same, for example, the dimension or reference line (9) of the said optical film laminated chip When the angle (theta) 1 of the absorption axis with respect to (), and the angle (theta) 2 of the slow axis of a retardation film differ, there existed a problem that it could not be used for manufacture of another optical film laminated chip for liquid crystal displays.

As a solution to this problem, for example, as shown by (a) and (b) in FIG. 12, two sides (FG and EH) parallel to the absorption axis 1 of the polarizing film and the ground axis of the retardation film A parallelogram optical film laminate 8 having two sides (EF and HG) parallel to (2) or orthogonal to (2) in (2) was produced, and this was referred to as an intermediate. From this, a method of cutting out the desired optical film laminated chip according to the longitudinal and horizontal dimensions, the angle of the absorption axis θ1 and the slow axis of the angle θ2 is considered.

According to the said manufacturing method, in the parallelogram optical film laminated body 8, among the pair of stool which comprises a parallelogram, one pair of stool FG and EH is the absorption axis 1 of a polarizing film. ), And the other pair of feces EF and HG are parallel to the direction of the slow axis 2 of the retardation film (FIG. 12A) or orthogonal (FIG. 12B), The film laminate 8 has an angle θ (FIG. 12A) or an angle θ− that is equivalent to the relative angle θ of the slow axis 2 of the retardation film with respect to the absorption axis 1 of the polarizing film. 90 °) (FIG. 12B) have two sides FG and HG intersecting. Therefore, ∠ HGF (angle ø) becomes angle θ or angle (θ-90 °) so that the angle θ or (θ-90 °) can be discriminated from the shape of the parallelogram.

For this reason, according to the manufacturing method via the parallelogram optical film laminated body 8, from the parallelogram optical film laminated body 8 in which the polarizing film and retardation film are laminated | stacked previously at the predetermined | prescribed relative angle (theta), Since the desired optical film laminated chip is cut out, for example, a plurality of kinds of optical film laminated chips having a common relative angle θ and different longitudinal and horizontal dimensions, but having the same relative angle θ and vertical and horizontal dimensions, and the reference line 9 1 type of optical film laminated body (8) of several types of optical film laminated | multilayer chips in which only the angle (theta) 1 of the absorption axis 1 of the polarizing film with respect to the polarizing film, and the angle (theta) 2 of the slow axis 2 of the retardation film differ. Can be prepared from. As a result, since the parallelogram optical film stack can be stored and managed as a common intermediate for a plurality of types of optical film stacking chips, the effort for inventory management can be reduced, and further, the productivity can be improved. Can be.

However, such a parallelogram optical film laminate has, in practical work, any one of the two pairs of parallel feces constituting the parallelogram being parallel to the absorption axis 1 of the polarizing film and one pair of the ground axes of the retardation film. It is not easy to visually discriminate whether it is parallel or orthogonal to (2), and there was a possibility that the direction of the absorption axis 1 and the direction of the ground axis 2 were incorrectly taken.

Then, the present inventors earnestly examined to develop the optical film laminated body which can be easily distinguished without taking the direction of the absorption axis 1 of a polarizing film, and the direction of the slow axis 2 of a retardation film incorrectly, Two parallel sides of the film stack are parallel or orthogonal to the ground axis of the retardation film, one side is parallel to the absorption axis of the polarizing film, and the other side is not parallel to the absorption axis of the polarizing film, and the optical film laminate is absorbed by the polarizing film. It was found that the axis and the slow axis of the retardation film can be easily identified, and the present invention has been reached.

That is, in this invention, the 1st optical film and the 2nd optical film are laminated | stacked,

Two parallel sides AB and DC parallel to each other or perpendicular to the optical axis 2 of the second optical film,

One side BC inclined with respect to the two sides AB and DC and parallel to the optical axis 1 of the first optical film and

The optical film laminated body 3 which has the other side AD which is not parallel with the said side BC is provided.

An example of the optical film laminated body of this invention is shown to (a), (b) and (c) in FIG. 1, and (a), (b) and (c) in FIG.

In the example of the optical film laminate 3 shown as (a), (b) and (c) in FIG. 1, two sides parallel to each other (AB and DC) are provided with respect to the optical axis 2 of the second optical film. It is an example of a parallel case, and upper and lower AB and DC show the trapezoidal optical film laminated body 3 parallel to the optical axis 2 of a 2nd optical film.

This optical film laminated body 3 is a structure in which a polarizing film and retardation film were laminated | stacked. Here, a polarizing film corresponds to a 1st optical film, and a retardation film corresponds to a 2nd optical film. The polarizing film and the retardation film are usually laminated through the adhesive layer. As the adhesive layer, for example, a transparent optical isotropic adhesive layer made of an adhesive such as an acrylic pressure-sensitive adhesive (adhesive) is used.

In such an optical film laminated body 3, the upper bottom AB and the lower bottom DC correspond to two sides parallel to each other. The length of the upper floor AB is, for example, about 50 mm to 1000 mm, and the length of the lower bottom DC is, for example, about 500 mm to 1500 mm.

In addition, such an optical film layered product 3 has a quadrilateral, and the quadrilateral BC is one side inclined with respect to two sides AB and DC parallel to each other, and is parallel to each other. One side that is neither parallel nor perpendicular to the two sides. The length of the quadrilateral BC is about 500 mm-2000 mm, for example.

The quadrilateral BC is parallel to the optical axis 1 of the first optical film, that is, the absorption axis of the polarizing film. The upper ab AB and lower DC are parallel to the optical axis 2 of the second optical film, ie the slow axis of the retardation film. Accordingly, the angle ø formed between the quadrilateral BC and the bottom DC of the optical film laminate, that is, ∠DCB is the relative angle θ of the slow axis 2 of the retardation film with respect to the absorption axis 1 of the polarizing film. Is the same angle as).

Thus, in this example, the absorption axis 1 of the polarizing film is shown as quadrilateral BC and the slow axis 2 of the retardation film is shown as two sides parallel to each other, namely the upper and lower sides AB and DC. For this reason, the direction of the absorption axis 1 of the polarizing film and the direction of the slow axis 2 of the retardation film can be easily distinguished, and the possibility of taking these directions incorrectly is also low. In addition, relative angle (theta) is shown as the angle ((phi)) which the quadrilateral BC and lower bottom DC make, ie, "DCB."

In addition, the optical film laminated bodies shown to (a), (b) and (c) in FIG. 1 respectively have the other side AD which is not parallel with respect to the optical axis 1 of the 1st optical film, The direction in which the side AD extends makes the angle of 1 degree-179 degree with respect to the direction of the optical axis of a 1st optical film, for example. The length of the side AD is about 500 mm-2000 mm, for example.

In the optical film laminate shown in Fig. 1 (a), the other side AD is perpendicular to the upper and lower sides AB and DC, i.e., two sides parallel to each other. Therefore, the quadrilateral BC can be known easily, and also the optical axis of a 1st optical film can be discriminated more easily.

In addition, in the examples shown by these (a), (b), and (c) in FIG. 1, respectively, when the relative angle (theta) is less than 40 degrees or exceeds 140 degrees, a trapezoid becomes an elongate shape and an optical film Since the handling of the laminate tends to be difficult, θ is preferably 40 ° or more and 140 ° or less, more preferably 45 ° or more and 135 ° or less. In addition, when the angle ø is 90 °, the side BC is generally not recognizable as a quadrilateral. In particular, the side AD is orthogonal to the upper and lower AB and DC. In the case where the upper floor AB is the same length, the upper floor AB cannot be distinguished from the side AD, so that the angle ø, i.e., DCB, is less than 90 ° or exceeds 90 °. Preferably, for this purpose the relative angle θ may be less than 90 °, or exceed 90 °. In practice, the angle BC can be recognized as a quadrilateral if the angle ø, that is, the relative angle θ is 89 degrees or less or 91 degrees or more.

In the example of the optical film laminate 3 shown as (a), (b) and (c) in Fig. 2, respectively, two sides (AB and DC) parallel to each other with respect to the optical axis 2 of the second optical film It is an example of orthogonality, and the upper bottom AB and the lower bottom DC show the trapezoidal optical film laminated body 3 orthogonal to the optical axis 2 of a 2nd optical film.

This optical film layered product 3 has a structure in which a polarizing film and a retardation film are laminated. Here, a polarizing film corresponds to a 1st optical film, and a retardation film corresponds to a 2nd optical film. The polarizing film and the retardation film are usually laminated through the adhesive layer. As the adhesive layer, for example, a transparent optical isotropic adhesive layer made of an adhesive such as an acrylic pressure-sensitive adhesive (adhesive) is used.

In such an optical film laminate 3, the upper and lower sides AB and DC correspond to two sides parallel to each other. The length of the upper floor AB is, for example, about 50 mm to 1000 mm, and the length of the lower bottom DC is, for example, about 500 mm to 1500 mm.

It also has a quadrilateral (BC), which is an inclined side with respect to the two sides (AB and DC) parallel to each other, and on the sides that are not parallel or perpendicular to the two parallel sides. Corresponding. The length of the quadrilateral BC is about 500 mm-2000 mm, for example.

The quadrilateral BC is parallel to the optical axis 1 of the first optical film, that is, the absorption axis of the polarizing film. The upper floor AB and the lower bottom DC are orthogonal to the optical axis of the second optical film, that is, the slow axis 2 of the retardation film. Therefore, a line (not shown) parallel to the ground axis 2 past the vertex C is orthogonal to the bottom DC, and the obtuse angle formed by the line (not shown) and the quadrilateral BC is an angle θ. ) Therefore, the angle ø formed between the quadrilateral BC and the bottom DC of the optical film laminate, that is, ∠DCB is the same angle as (θ-90 °).

Therefore, in this example, since the absorption axis 1 of a polarizing film is shown as quadrilateral BC and the direction of the slow axis 2 of a retardation film is shown as the direction of the line orthogonal to an upper and a lower bottom, The direction of the absorption axis 1 and the direction of the slow axis 2 of the retardation film can be discriminated easily, and the possibility of taking these directions incorrectly is also low. In addition, relative angle (theta) is computed by Formula (2) from the angle ((phi)) which the quadrilateral BC and lower bottom DC make.

θ = ø + 90 °

In addition, the optical film laminated bodies shown to (a), (b) and (c) in FIG. 2, respectively, have the other side AD which is not parallel with respect to the optical axis 1 of a 1st optical film, The direction in which the other side AD extends forms an angle in the range of, for example, 1 ° to 179 ° with respect to the direction of the optical axis of the first optical film. The length of the said one side is about 500 mm-2000 mm, for example.

In the optical film laminate shown in FIG. 2A, the sides AD are perpendicular to the upper and lower sides AB and DC, that is, two sides parallel to each other. Therefore, the quadrilateral BC can be known easily, and also the optical axis of a 1st optical film can be discriminated more easily.

In addition, in the examples shown as (a), (b) and (c) in Fig. 2, respectively, when the relative angle θ is greater than 50 ° and less than 130 °, the angle ø is less than 40 ° or greater than 140 °. Since the trapezoid tends to be elongated and becomes difficult to handle the optical film laminate, θ is preferably 50 ° or less or 130 ° or more, more preferably 45 ° or less or 135 ° or more. In addition, when the angle ø is 90 °, the side BC is not generally recognized as a quadrilateral, and in particular, the side AD is orthogonal to the upper and lower AB and DC, When the sides AD are the same length, it is preferable that the angle ø is less than 90 ° or greater than 90 ° because the upper edge AB cannot be distinguished from the other side AD. The relative angle θ is preferably less than 180 ° or greater than 0 °. In practice, when the angle ø is 89 ° or less or 91 ° or more, the side BC can be recognized as a quadrilateral, and for this purpose, the relative angle θ may be 179 ° or less or 1 ° or more. .

Although the optical film laminated body of this invention shown to FIG. 1 and FIG. 2 is a shape of a rectangle (trapezoid), the optical film laminated body of this invention is not limited to a square, For example, four vertices A, B, It may be a shape without at least one of C and D).

For example, the optical film laminate of the present invention is parallel to one side AD without the vertex C in the rectangular optical film laminate shown in FIGS. 1 and 2, as shown in FIGS. 9 and 10. It may also have one side (C'C "). Such an optical film stack can be easily manufactured by removing one vertex (C) from a rectangular optical film stack.

In order to obtain the rectangular optical film laminated chip 10 from such an optical film laminated body 3 of this invention, the longitudinal and horizontal dimensions of the desired optical film laminated chip, the angle (theta) 1 of the absorption axis of a polarizing film with respect to a reference line, or What is necessary is just to cut | disconnect the optical film laminated body 3 according to the angle (theta) 2 of the slow axis of retardation film, and cut out the rectangular optical film laminated | multilayer chip. The cutting method is not particularly limited and can be cut by, for example, cutting using a press cutter or the like.

Here, the angle θ1 of the absorption axis 1 or the angle θ2 of the slow axis 2 with respect to the reference side 90 of the desired rectangular optical film laminated chip is different from that of the optical film laminate 8. When the angle of the absorption axis 1 with respect to one side AD or the angle of the slow axis 2 is the same, that is, the direction of the reference side 90 of the rectangular optical film laminated chip is the same as that of the other side AD When parallel to the direction, as shown in FIGS. 13 and 14, the cutting of the rectangular optical film laminate chip 10 may be started from the other side AD along the other side AD. .

Manufacturing the optical film laminate 3 of the present invention from a band-shaped polarizing film (band-shaped first optical film) 4 and a band-shaped retardation film (band-shaped second optical film) 6 In order to bond together after cut | disconnecting a strip | belt-shaped polarizing film and a strip | belt-shaped phase difference film, respectively, in order to, for example, as shown in FIG. 3 or 6,

(i) The absorption axis (first optical) of the polarizing film in the optical film laminated body 3 of the angle (ø) made with respect to the longitudinal direction of the strip | belt-shaped polarizing film (strip | belt-shaped 1st optical film) 4 is made. Equivalent to the relative angle θ (FIG. 3) or (θ-90 °) (FIG. 6) of the slow axis of the retardation film (the optical axis of the second optical film) 2 with respect to the optical axis of the film) 1. Along the angled cutting line C1, the strip-shaped polarizing film 4 is cut and parallel to the angle ø with respect to the absorption axis (optical axis of the first optical film) 1 of the polarizing film. Cut out the polarizing film 5 of the cut sheet which has two sides FE and GH, and formed the parallelogram which the distance between these two sides is approximately equal to the width | variety of the strip | belt-shaped retardation film 6,

(ii) The obtained cut sheet-like polarizing film 5 is strip-shaped so that two sides (FE and GH) of the cut sheet-like polarizing film 5 follow both edges IJ and KL of the band-shaped retardation film. Laminated on the retardation film 6 to obtain a strip-shaped optical film laminate 7 in which the cut sheet-like polarizing film 5 was laminated on the strip-shaped retardation film 6,

(iii) The obtained strip | belt-shaped optical film laminated body 7 is cut along the cutting line C2 along the shape of the laminated sheet-like polarizing film 5, and the polarization film and retardation film were laminated | stacked parallel A quadrilateral optical film laminate 8 is obtained,

(iv) It is preferable to manufacture by the method of cut | disconnecting the obtained parallelogram optical film laminated body 8.

In this manufacturing method, as shown in Fig. 3, a parallelogram having two sides parallel to each other is made from the band-shaped polarizing film 4 at the same angle? As the angle? With respect to its longitudinal direction. When cut | disconnecting the sheet-like polarizing film 5, when using the retardation film which has the slow axis 2 parallel to the longitudinal direction as a strip | belt-shaped retardation film 6, two sides parallel to each other (upper bottom AB) And bottom (DC)] can obtain a trapezoidal optical film laminate 3 in which the retardation film is parallel to the slow axis 2 of the retardation film.

The parallelogram optical film stack 8 cuts along a cutting line C3 at an angle of ø2 with respect to both edges IJ and KL of the band-shaped retardation film, where both edges of the band-shaped retardation film ( When the angle ø2 of the cutting line C3 with respect to IJ and KL is 90 °, the obtained optical film laminate 3 has two sides (AB and DC) with one side (AD) parallel to each other. It becomes orthogonal (FIG. 3). Moreover, the case where the said angle ø2 becomes larger than 90 degrees (FIG. 4) also may become smaller than 90 degrees (FIG. 5).

When the angle ø2 is (180 ° -θ2) (FIGS. 3, 4, and 5), one side AD of the trapezoidal optical film laminate 3 obtained is the desired optical film laminate chip. Since it becomes parallel to the reference | standard side 90 in (10), the said one side AD can be made into the line which starts cutting | disconnection of the optical film laminated body chip 10. FIG.

On the other hand, as shown in Fig. 6, a cut sheet having a parallelogram having two parallel sides formed from the band-shaped polarizing film 4 with an angle ø equal to the angle θ-90 ° with respect to the longitudinal direction thereof. When cutting out the polarizing film 5 of a phase, when the phase difference film which has the slow axis 2 orthogonal to the longitudinal direction is used as a strip | belt-shaped retardation film 6, two sides parallel to each other (upper-bottom AB and Bottom (DC)] can obtain a trapezoidal optical film laminate 3 orthogonal to the slow axis 2 of the retardation film.

Here, when the angle ø2 of the cutting line C3 with respect to both edges IJ and KL of the strip | belt-shaped retardation film is 90 degrees, the optical film laminated body 3 obtained has one side AD mutually mutually. Orthogonal to the two parallel sides AB and DC (FIG. 6). In addition, the case where the angle ø2 becomes larger than 90 degrees (FIG. 7) may also be smaller than 90 degrees (FIG. 8).

When the angle ø2 is (270 ° -θ2) (FIGS. 6, 7 and 8), one side AD in the trapezoidal optical film laminate 3 obtained is the desired optical film laminate chip. Since it becomes parallel to the reference | standard side 90 in (10), the said one side AD can be made into the line which starts cutting | disconnection of the optical film laminated body chip 10. FIG.

In addition, although the position of the cutting line C3 in the parallelogram optical film laminated body 8 can be set arbitrarily, when a cutting line is selected so that it may pass through the center of the laminated body 8, the optical film laminated body of the same shape Two sheets of (3) can be obtained.

In addition, in the optical film laminate of the present invention, the polarizing film (first optical film) and the retardation film (second optical film) are usually laminated through an adhesive layer, but such an adhesive layer is usually a strip-shaped polarizing film (band-shaped first). Optical film) 4 is previously attached to one side.

When the optical film laminated body of this invention is trapezoidal in shape, since the optical axis of a 1st optical film becomes a quadrangle which comprises a trapezoid, and the optical axis of a 2nd optical film becomes a bottom and a bottom, or is orthogonal to a top and a bottom, The optical axis of the first optical film and the optical axis of the second optical film are not misaligned. As a result, the rectangular optical film laminated chip can be cut with good productivity.

Claims (8)

The first optical film and the second optical film are laminated, two parallel sides that are parallel or perpendicular to the optical axis of the second optical film, inclined with respect to the two sides, and with respect to the optical axis of the first optical film. An optical film laminate for cutting an optical film laminate chip having one side in parallel and the other side not parallel to the optical axis of the first optical film. The optical film laminate according to claim 1, wherein the other sides that are not parallel to the optical axis of the first optical film are perpendicular to two sides parallel to each other. The optical film laminate for cutting a rectangular optical film laminate chip on which the first optical film and the second optical film are laminated, wherein the other optical film is not parallel to the optical axis of the first optical film. An optical film laminate parallel to a reference side 90, wherein one side is a lower long side or short side in an optical film laminate chip. 2. The relative angle θ of the optical axis of the second optical film with respect to the optical axis of the first optical film is two or more parallel to the optical axis of the second optical film. The optical film laminated body which is the following. The optical axis of the second optical film is orthogonal to the optical axis of the second optical film, and the relative angle θ of the optical axis of the second optical film relative to the optical axis of the first optical film is greater than 0 ° and 50 °. The optical film laminated body of less than or equal to or less than 130 degrees 180 degrees. The optical film laminate according to claim 1, wherein the first optical film is a polarizing film and the second optical film is a retardation film. The optical band according to any one of claims 1 to 5, from a band-shaped first optical film having an optical axis parallel to the longitudinal direction and a band-shaped second optical film having an optical axis parallel or perpendicular to the longitudinal direction. As a method of manufacturing an optical film laminate for cutting a film laminate chip, (i) Relative angle (theta) made with respect to the longitudinal direction of a strip | belt-shaped 1st optical film is the relative angle (theta) of the optical axis of a 2nd optical film with respect to the optical axis of the 1st optical film in an optical film laminated body. Or by cutting the band-shaped first optical film along a cutting line at an angle equal to (θ-90 °), making two angles parallel to the optical axis of the first optical film to form the angle ø. Cut out the first optical film on the cut sheet, the distance between the two sides forming a parallelogram equal to the width of the band-shaped second optical film, (ii) the obtained first optical film on the cut sheet along the both edges of the two optical bands having two bands parallel to each other at an angle ø with respect to the optical axis of the first optical film on the cut sheet. Lamination | stacking on the strip | belt-shaped 2nd optical film, and obtaining the strip | belt-shaped optical film laminated body by which the cut sheet-shaped 1st optical film was laminated | stacked on the strip | belt-shaped 2nd optical film, (iii) The obtained strip | belt-shaped optical film laminated body is cut | disconnected along the cutting line along the shape of the laminated | stacked cut-sheet 1st optical film, and the parallelogram optical which the 1st optical film and the 2nd optical film were laminated | stacked was carried out. To obtain a film laminate, (iv) The obtained parallelogram-shaped optical film laminated body is cut | disconnected, The manufacturing method of the optical film laminated body characterized by the above-mentioned. 8. The optical film laminate of claim 7, wherein the parallelogram-shaped optical film laminate has an angle with respect to both edges of the band-shaped second optical film (180 ° -θ2) or (270 ° -θ2) (where θ2 is an optical film). A method of manufacturing an optical film laminate, characterized by cutting along a cutting line at an angle ø2 equal to the angle of the second optical axis with respect to the reference side 90 which is the lower long side or short side in the laminate chip.

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