TW520452B - Manufacturing method for stacked optical film and intermediate body of stacked optical film thereof - Google Patents

Abstract

The present invention provides a manufacturing method for stacked optical film and intermediate body of stacked optical film thereof to make an optical film laminate intermediate body to be used in common for, for example, a liquid crystal display device which has the same angle of the optical axis and to improve the work efficiency. A first optical film intermediate body in a parallelogram shape is cut out of a belt like first optical film (such as a polarization film). The belt like optical film laminate intermediate body is formed by sticking the first optical film intermediate body on the belt like second optical film (such as phase difference film) so that the angle between the optical axis of the first optical film intermediate body and the optical axis of the belt like second optical film (such as phase difference film) is a specific mutual angle (θ), and then this is cut in conforming with the shape of the first optical film intermediate body, thus obtaining the cut sheet type optical film laminate intermediate body. After proceeding multiple-surface examination on the cut sheet type optical film laminate intermediate body, proceed multiple-surface trimming to obtain the laminated optical film chip. In addition, the distance of the cutting lines of the first optical film intermediate body at this time is made equal to the width of a belt like second optical film.

Description

520452

5. Description of the invention (1) The technical field to which the present invention belongs The present invention relates to a method for manufacturing an optical film laminated wafer and an optical film laminated intermediate. Technical background A polarizing film and a retardation film are used as representative optical films, which are extremely important as optical elements constituting a liquid crystal display device. In addition, the direction of the optical axis of the optical film in the liquid crystal display device, that is, the direction of the absorption axis of the polarizing film or the direction of the late phase axis of the retardation film, greatly affects the display performance of the liquid crystal display device. Important elements. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs, LCD display devices, even S T N (Super twisted nematic) type liquid crystal display devices, mostly use polarizing films and retardation films together. At this time, an optical film laminated wafer in which a polarizing film and a retardation film are bonded together in advance is generally incorporated into a liquid crystal display device. Also, in order to obtain a liquid crystal display device that is easy to see from the screen even from an oblique direction, the two types of retardation films are bonded together and assembled. At this time, the two types of retardation films are bonded beforehand. The combined optical film laminated wafers are incorporated into a liquid crystal display device. This method for manufacturing an optical film laminated wafer generally adopts a belt-shaped optical film, that is, a belt-shaped polarizing film or a belt-shaped retardation film while securing a shape suitable for a liquid crystal display device and an optical axis direction. Method for cutting out optical thin film wafers, that is, polarized optical thin film wafers or retardation thin film wafers, and manufacturing the optical thin film laminated wafers by applying these pastes together: -4- (诮 Read the precautions on the back page first ) This paper size applies to Chinese National Standard (CNS) A4 (210X297 mm) 520452 Printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs Λ7 B * 7__5. Description of the invention (2) Please refer to Figures 10 and 11 The processes of the conventional method for manufacturing an optical film laminated wafer will be described. In addition, in the illustrated optical thin film laminated wafer, a polarizing film and a retardation film are bonded together. Step 1: Wafer cutting of polarizing film (steps S21, S22, S 2 3) Send out a polarizing film 1 1 0 in a strip shape from the polarizing film roll 1 1 (step S2 1), and cut it into a beveled fixed size ( The polarizing film intermediate body 112 is continuously cut out in parallel to the optical axis and according to a predetermined width) (step S22). A plurality of polarizing film wafers 1 1 3 are cut out by performing wafer dicing (cutting into the shape of a wafer) on the middle of the polarizing film 1 12 to be approximately the same size as the optical film laminated wafer 30 (step S 2 3). . Here, in step S23, the polarizing film wafer 113 is cut into a shape suitable for the liquid crystal display device of the final product, which is usually a square (rectangular or rectangular) shape. At the same time, it is cut so that the direction of the optical axis (absorption axis) of the polarizing film wafer 1 1 3 and the direction of the optical axis (absorption axis) desired for the liquid crystal display device of the final product are aligned. Second process: Wafer cutting of the retardation film (steps S 2 4, S 2 5 and S 2 6) The strip-shaped retardation film 120 is sent out from the retardation film roll 121 (step S24), and it is cut into an oblique angle Set the size and continuously cut out the parallelogram retardation film intermediate 1 2 2 (steps (fi first read the precautions on the back and write this page) i Pack. Order

This paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) -5-520452 Λ7 Printed by the Consumers' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (3) S25). The retardation film intermediate body 122 is subjected to wafer dicing to cut into approximately the same size as the optical film laminated wafer 30, thereby cutting out a plurality of retardation film wafers 123 (step S26). Here, in step S 2 6, the retardation film wafer 1 2 3 is cut into a shape suitable for the liquid crystal display device of the final product, which is usually square. At the same time, it is cut so that the direction of the optical axis (late phase axis) of the retardation film wafer 1 2 3 can coincide with the direction of the optical axis (late phase axis) desired for the liquid crystal display device of the final product. As described above, the wafer cutting process (the first process) of the polarizing film and the wafer cutting process (the second process) of the retardation film differ from the direction of the absorption axis and the direction of the retardation axis of the obtained optical film laminated wafer. It may be the same except that it is suitable for a direction desired by a liquid crystal display device. Two more processes can be performed simultaneously. Step 3: Lamination of polarizing and retardation film wafers (step S 2 7) The polarizing film wafers 1 1 3 and retardation film wafers 1 2 3 of each group are bonded together with an adhesive to form an optical film stack. Wafer 3 0. At this time, the polarizing film wafer 1 1 3 and the retardation film wafer 1 2 3 are already positioned with respect to the respective optical axes. Therefore, when the polarizing film wafer 113 and the retardation film 1 2 3 are bonded together according to their outer shapes, the optical film laminated wafer 30 has a mutual angle of the late phase axis with respect to the absorption axis (that is, by the absorption The angle formed by the axis and the late phase axis) (0) becomes a certain (desired) mutual angle (0 〇). (¾Read the notes on the back first

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This paper size applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) -6-520452 R * 7 V. Description of the invention (4) The fourth process: trimming (step S28) Adjust the optical film laminated wafer one by one 30 In order to be processed into the final shape, the outer shape of the film is trimmed (cut along the desired shape) for the optical film laminated wafer 30. Fifth process: inspection (step S29) The optical film laminated wafers 30 are inspected one by one. Sixth process: packing (step S30) While reconfirming the selection of the optical film laminated wafer 30, the packing is performed. However, the above conventional method has the following problems. The two optical film wafers constituting the optical film laminated wafer printed by the staff of the Central Bureau of Standards of the Ministry of Economic Affairs and the cooperative are printed from the respective strip-shaped optical films, such that the shape and the direction of the optical axis are suitable for the liquid crystal display device. Cut out and fit. Therefore, even if the obtained optical film laminated wafer has the same size or required (desired) mutual angle (0), the absorption axis of the polarizing film is relative to the reference line of the optical film laminated wafer (the extending direction thereof). The angle formed by the line to be consistent with the wafer (for example, the long side direction) will be different from the angle formed by the retardation axis of the retardation film with respect to the same reference line, so it cannot be transferred to other liquid crystals. An optical film of a display device is laminated on a wafer. Therefore, it is necessary to manufacture optical film laminated wafers for various liquid crystal display devices. Since the optical film wafers must be attached one by one, the Chinese paper standard (CNS) A4 (210X297 mm) applies to the size of the paper. 520452 5. Description of the invention (5) , And foreign matter is easy to adhere to the adhesive. In addition, the retardation film is very thin, so when it is bent, it may cause a defect in the display screen and lose the price of the product. Therefore, attention needs to be paid when handling retardation films to increase the possibility of defective products. OBJECTS OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and an object thereof is to provide an optical film stacking center suitable for a liquid crystal display device, except that the desired mutual angles (0 °) formed by the two optical axes are the same. In addition to being able to share the body, it can also improve the working efficiency of the optical film laminated wafer manufacturing method (please read the precautions on the back to write this page) 丨, ¾ No. HP manuscript, 1: Γ Contents of the invention

The manufacturing method for printing the first optical film laminated wafer of the present invention by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economics is mainly a method for manufacturing a parallelogram optical film laminated intermediate body formed by laminating a first optical film and a second optical film The method is composed of a first optical film having a strip shape in which the optical axis and the long side direction intersect parallel or perpendicularly, and a second optical film having a strip shape in which the optical axis and the long side direction intersect parallel or perpendicularly. 2 The mutual angle (0) of the optical axis of the optical film with respect to the optical axis of the first optical film is equal to a certain mutual angle (00), which is characterized by: (1) The first optical film cut out from the belt has a relative On its long side — the direction is at an angle (0) equal to the angle 0 or (0 ~ 9 0.) and the standard paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -8-520452 Central Ministry of Economic Affairs Printed by the Consumer Bureau of Standards Bureau Λ7 IT Five, Invention Description (6) The two sides of the row, and the distance between the two sides is approximately equal to the width of the strip-shaped second optical film and is parallelogram-shaped The sheet-like first optical film intermediate, (2) If the two sides of the slice-shaped first optical film are along both edges of the band-shaped second optical film, the obtained slice-shaped first optical film intermediate is obtained. Laminated on a strip-shaped second optical film to obtain a strip-shaped optical film laminate intermediate obtained by laminating a sliced first optical film intermediate and a strip-shaped second optical film, (3) The strip-shaped optical film laminated intermediate body is cut along the shape of the laminated first optical film intermediate body. (4) Cut out the optical film laminated wafer from the obtained parallelogram-shaped optical film laminated intermediate body. In the above-mentioned structure, although the mutual angle (0) of the optical axis of the second optical film with respect to the optical axis of the first optical film is a constant mutual angle (0) in the optical film laminated wafer, the mutual angle (0) The angle 0 and a certain mutual angle 0 are both based on the optical axis of the first optical film, and the angle formed by the reference and the optical axis of the second optical film is determined by the surface on the side of the first optical film. See, an angle that is positive in clockwise direction. The range of 0 ° or more and less than + 180 ° during the day in this description. In the above-mentioned structure, first, the first optical film intermediate body in the form of a slice is cut out from the first optical film in the form of a strip, and the second optical film is laminated in the form of a strip. The sliced first optical film intermediate, if it has a relative paper size, applies the Chinese National Standard (CNS) A4 specification (210X297). Γ〇Ι (Please read the precautions on the back first

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Employees' Cooperative Cooperative Seal of the Central Bureau of Standards of the Ministry of Economic Affairs 520452 Λ "? 5. Description of the invention (7) The long side direction of the first optical film in a strip shape is approximately equal to the above-mentioned angle (0.) or (0-90 °) Angle (0) and two parallel sides, and the distance between the two sides is approximately a parallelogram that is approximately equal to the width of the second strip-shaped optical film, and is cut out from the first strip-shaped optical film. Here, the angle (0) when the sliced first optical film intermediate is cut out is based on the long side direction of the first optical film, and the angle formed by the first optical film and the cutting line is the same. When viewed from a surface opposite to one side of the second optical film layer, the counterclockwise direction is a positive angle. In addition, in this specification, it is a range of 90 ° or more and less than + 90 °. The above-mentioned angle (0) is calculated using the above-mentioned mutual angle (0), and is calculated based on the following principles, respectively. ① When a first optical film having a strip shape in which the optical axis is parallel to the longitudinal direction and a second optical film having a strip shape in which the optical axis is parallel to the longitudinal direction are used, the angle is equal to 0. ② When using a strip-shaped first optical film whose optical axis is parallel to its longitudinal direction and a strip-shaped second optical film whose optical axis is perpendicular to its longitudinal direction, it is equal to the angle (0-90 °). ③ When the first optical film with a strip-shaped optical axis perpendicularly intersecting with its longitudinal direction and the second optical film with a strip-shaped optical axis perpendicularly intersecting with its longitudinal direction, the angle is equal to 0. ④ When using a strip-shaped first optical film whose optical axis intersects its longitudinal direction perpendicularly and a strip-shaped 2 'optical thin tooth whose optical axis is parallel to its longitudinal direction, it is equal to the angle (0 — 90 ° ). (Read the precautions on the back of this page before writing this page):

This paper size applies Chinese National Standard (CNS) A4 specification (210X29 * 7mm) -10- 520452 Λ7 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (8) The sliced first optical The film intermediate becomes a parallelogram with two sets of parallel sides and adjacent sides that intersect at an angle of 0. Next, the obtained slice-shaped first optical film intermediate is laminated on the second optical film in the form of a band. This lamination is such that the two parallel sides of the film intermediate formed by the cutting line when the slice-shaped first optical film intermediate is cut out from the first optical film having a strip shape can be followed along the second It is performed on both edges of the optical film. Since the sliced first optical film intermediate is laminated on the second optical film having a strip shape as described above, among the obtained strip-shaped optical film laminated intermediates, the The angle formed by the optical axis with respect to the optical axis of the sliced first optical film intermediate, that is, the mutual angle formed by the two optical axes, becomes the second optical film in the optical film laminated wafer The mutual angle (0) of the optical axis of the optical axis with respect to the optical axis of the first optical film can be set to the same angle as a certain (desired) mutual angle (0). Next, the obtained strip-shaped optical film laminate intermediate body is cut along the shape of the first optical film intermediate body constituting the slice. Since the shape of the slice-shaped first optical film intermediate body is a parallelogram, the shape of the obtained optical film laminated intermediate body is a parallelogram. The obtained parallelogram optical film lamination intermediate system has a structure in which a first optical film and a second optical film are laminated together, and the optical axis of the second optical film is relative to the optical axis of the first optical film. Paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) -11-(Fix read the precautions on the back to write this page), _install ·, ιτ

520452 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Λ7 Βη V. Description of the invention (9) The angle 'becomes the same angle as the above-mentioned mutual angle (0), and this is the same angle as a certain mutual angle 0 〇. The intermediate layer of the optical film laminate is a parallelogram and has two sets of parallel two sides. However, one set of the parallel two sides intersects the optical axis of the first optical film in parallel or perpendicularly. At the same time, the other two sets of parallel two sides of the parallelogram optical film laminated intermediate body are parallel or perpendicular to the optical axis of the second optical film constituting the optical film laminated intermediate body. In addition, the optical film laminated intermediate body has two adjacent edges that intersect at an angle of 0. Next, an optical film laminated wafer is cut out from the obtained optical film laminated intermediate body. In the optical film laminated intermediate of the present invention, the first optical film and the second optical film are such that the mutual angle (0) of the optical axis of the second optical film with respect to the optical axis of the first optical film becomes a constant mutual angle ( 0〇), so the first optical film and the second optical film are cut from the above-mentioned optical film lamination intermediate, wherein the optical axis of the second optical film is relative to the first optical film. 1 When the mutual angle (0) of the optical axis of an optical film becomes a fixed mutual angle (0), it is laminated. Root_The structure described above can reduce the process of cutting out the first optical film wafer from the first optical film intermediate in the conventional process, and cut out the second optical film intermediate from the strip-shaped second optical film. And a process of cutting out the second optical film wafer from the second optical film intermediate. (Read first and read the following precautions ^^ write this page) —, install ·

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This paper size applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm): 12- 520452 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Λ " V. Invention Description (1〇) 'In addition to reducing the number of repairs and In addition to the number of lamination times, the first optical film and the second optical film are laminated in the state of the sliced first optical film and the tape-shaped second optical film, so that it is possible to reduce the time required for adhering the first optical film to the first optical film. The case where the adhesive of the second optical film oozes out and sticks foreign matter such as chips. As a result, the incidence of defective products can be reduced, and inspection work can be facilitated. Furthermore, the strip-shaped optical film laminated intermediate body and the sliced optical film laminated intermediate body can be stored as a finished product. In addition, although the size and the direction of the reference line are different, various optical film laminated wafers that can be shared with each other at an angle (0) are cut out. Therefore, a band-shaped optical film laminated intermediate or a sliced optical film laminated intermediate Share and keep it. Therefore, production capacity can be improved by reducing production processes and operating efficiency. In addition to improving efficiency, it is also possible to reduce the number of types of intermediates (belt-shaped optical film laminate intermediates and sliced optical film laminate intermediates) that should be stocked. The manufacturing method of the second optical film laminated wafer according to the present invention is the first optical film having a predetermined mutual angle (0 °) of + 40 ° to + 140 ° in the structure of the previous first manufacturing method, and a band shape. The optical axis of is parallel to its longitudinal direction, and the optical axis of the second optical film in a strip shape is parallel to its longitudinal direction. With this configuration, in addition to the effects brought about by the configuration of the previous first manufacturing method, even when a certain mutual angle (0) is + 40 ° to + 140 °, the first optical film is cut from a strip shape. The sliced paper size applies to the Chinese National Standard (CNS) Α4 specification (210 × 297 mm) -13: " ¾ Read the notes on the back first

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520452 Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Λ7 B7 _V. Description of the invention (11). · The f-th optical film intermediate, the angle 0 formed by the two adjacent sides will become adjacent with the angle 0 The two-sided parallelograms' and the sliced first optical film intermediate will not become slender, so it will be easy to handle. In the obtained optical film laminated intermediate body, similarly, both adjacent sides intersect at an angle of 0. Therefore, the optical film laminated intermediate body does not become elongated and is easy to handle. In the third optical film laminated wafer manufacturing method of the present invention, in the structure of the previous first manufacturing method, the optical axis of the band-shaped first optical film is parallel to its longitudinal direction, and the band-shaped second optical film is The optical axis of is perpendicular to its long side direction, and the mutual angle (0.) must be 0 ° ~ + 50 ° or more than + 130 ° and less than 180 °. With this configuration, in addition to the effects brought by the configuration according to the first manufacturing method, even if a certain phase angle (0) is 0 ° to + 50 ° or more than + 130 °, and less than + 180 °, The slice-shaped first optical film intermediate body cut out from the band-shaped first optical film has a parallelogram having two adjacent sides that intersect at an angle (0-9 0 °). Therefore, the sliced first optical film Optical film intermediates do not become slender and therefore easy to handle. Also, even if the obtained optical film laminated intermediate body also has two adjacent sides that intersect at an angle (0 to 90 °), the optical film intermediate body does not become slender and therefore becomes Easy to handle. The manufacturing method of the fourth optical film laminated wafer of the present invention, in addition to the structure of the first manufacturing method, the first optical film is a polarizing film, and the second paper size applies the Chinese National Standard (CNS) A4 specification (210X29 * 7mm) ^) -14: * (Please read the notes on the back I ^ m I this page) Order

520452 A7 B7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the Invention (12) The optical film is a retardation film. According to the above configuration, in addition to the effects brought about by the configuration of the first manufacturing method, since the first optical film is a polarizing film having generally high rigidity, and the second optical film is a retardation film having generally low rigidity, Therefore, even when a retardation film having low rigidity and difficult to handle is used, it is not necessary to treat it as a slice-shaped retardation film. Therefore, it is possible to improve work efficiency and productivity. The first optical film laminated intermediate of the present invention is a first optical film and a second optical film. If the mutual angle (0) of the optical axis of the second optical film with respect to the optical axis of the first optical film is constant, The optical film intermediate layer is generally laminated at an angle (0), but has two sides that intersect parallel or perpendicular to the optical axis of the first optical film and intersects parallel or perpendicular to the optical axis of the second optical film The other two parallelograms. According to this configuration, the obtained optical film laminated intermediate becomes a parallelogram having two adjacent sides that intersect at an angle of 0 or (0-9 °), and it is easy to determine the second one. The mutual angle (0) between the optical axis of the optical film and the optical axis of the first optical film. Therefore, it is possible to improve work efficiency and productivity. The second optical film laminated intermediate of the present invention has a mutual angle (0 °) of + 40 ° to + 140 ° in addition to the structure of the first first optical film laminated intermediate, and has the same optical properties as the first optical film. The two sides are parallel to the axis and the two sides are parallel to the optical axis of the second optical film. According to this configuration, even if a certain mutual angle (0) is +40. (Please read the notes on the back first and write this page) 丨 * Order

This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 520452 Λ7 Β1 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (13) ~ +, 40 ° The obtained optical film is laminated The intermediate body has an angle of 0 formed by two adjacent sides. The intermediate body becomes a parallelogram having two sides that intersect and intersect at an angle of 0. Therefore, the optical film laminated intermediate body does not become slender, and it becomes easy. deal with. This can improve work efficiency and productivity. The third optical film laminated intermediate of the present invention, in addition to the structure of the first first optical film laminated intermediate, has a certain mutual angle (00) of 0 ° to + 50 ° or more than + 130 °. It is 180 ° and has two sides parallel to the optical axis of the first optical film and two sides perpendicular to the optical axis of the second optical film. According to this configuration, even when a certain mutual angle (0.) is 0 ° to + 50 °, or more than 130 °, and less than + 180 °, the obtained optical film laminate intermediate becomes It has a parallelogram with two sides that intersect and intersect at an angle (0 to 90 °). Therefore, the optical film laminated intermediate body does not become thin, and it is easy to handle. This can improve work efficiency and productivity. In addition, the first to third optical film laminated intermediate bodies of the present invention may be in a tape shape or a slice shape. DETAILED DESCRIPTION OF THE INVENTION Please refer to FIGS. 1 to 9 to describe a method for manufacturing an optical film laminated wafer and an optical film laminated intermediate of the present invention. In this embodiment, the first optical film is a polarizing film, and the second optical film is a retardation film. But it is not limited to this. The first optical thin paper size is applicable to the Chinese National Standard (CNS) Α4 specification (210X297 mm). 16- (Please read the precautions on the back first

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520452 Λ7 ____ B *? 5. Description of the invention (14) The film may be a retardation film, and the second optical film may also be a polarizing film. The first optical film may be a retardation film, and the second optical film may be a retardation film. Here, the polarizing film is a linearly polarizing film. As shown in Fig. 2 (a), the basic structure of the belt-shaped polarizing film (the belt-shaped first optical film) 10 used in this embodiment is as follows. The polarizing film 10 is, for example, a polarizing layer, and is made of PVA or the like. The polarized film 10 a is a structure supported by two cellulose films (TAC films 10 b and 10 e). In addition, for a strip-shaped polarizing film 10, an adhesive layer 10c is provided on the outside of one of the TAC films 10b, and a release film 10d is adhered thereon. A protective film 10 f is attached to the outer surface of the other TA C film 10 e. In addition, the polarized film 10a is colored by, for example, iodine, a dichroic dye, or the like in order to block light other than light vibrating in a certain direction. In addition, the thickness of the polarizer film 10 a is usually about 15 to 3 0 // m, and the thicknesses of the two TAC films 10 b and 10e are usually about 40 to 200 // m, and the adhesive layer 30 to 100 / The thickness of the protective film 10 f is usually about 30 to 100 / m. Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (Xu Xian read the precautions on the back of this page and write this page). As shown in Figure 2 (b), the retardation film (belt-shaped) The basic structure of the second optical film) 20 is as follows. The retardation film 20 is composed of, for example, a retardation film 20a formed of polycarbonate, polyether mill, or the like as a retardation layer. In addition to the retardation film 20, in addition to a protective film 2Ob affixed to one of the outer surfaces, an adhesive layer 20c capable of being attached to the liquid crystal display device is provided on the other outer surface, and a protective film 2c Release film 20d. This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) -17-Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 520452 B. V. Description of the invention (15) In addition, the thickness of the retardation film 20 a Generally 30 to 1 0 0 // m, the thickness of the protective film 20b is generally 30 to 100 // m, the thickness of the adhesive layer 2 0 c is generally 15 to 3 5 / zm, and the release film 20d The thickness is generally about 30 to 100 / zm. As shown in FIG. 2 (c), the basic structure of the optical film laminated wafer 30 of this embodiment is a self-polarizing film 10 and a release film 10d. The protective film 20 b is peeled from the retardation film 20, and the polarizing film 10 and the retardation film 20 are bonded together by the adhesive layer 10 c. The above-mentioned polarizing film 10 and retardation film 20 are generally supplied by optical film rolls (polarizing film roll 11 and retardation film roll 21) which are rolled into a roll shape with a width of 1.0 m or 0.7 width. In addition, in most cases, the optical axes, that is, the absorption axis of the polarizing film 10 and the retardation axis of the retardation film 20 extend in the extension direction of the drum, and according to the extension method, the direction Intersect parallel or perpendicular. That is, when the drum is a longitudinally extending form extending in the long-side direction, its optical axis is usually formed parallel to the long-side direction of the drum. When the drum is a laterally extending form that extends vertically with respect to the long side direction, its optical axis is generally formed to be perpendicular to the long side direction of the drum. Next, each process of the method for manufacturing an optical thin film laminated wafer according to this embodiment will be described with reference to Figs. 1 and 3 to 7. (#Read the first note and write this page) -il equipment · too

This paper size is applicable to Chinese National Standard (CNS) A4 (210X297 mm) -18-520452 Printed by the Cooper Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the invention (16) The first process: Bevel sizing of polarizing film Cutting (steps SI and S2) As shown in FIG. 4 (a), a polarizing film is fed out from a polarizing film roller according to a certain conveying length (pitch) L (step S1), and a cutter or the like is used. The cutting device cuts the strip-shaped polarizing film at an inclination angle 0 with respect to the longitudinal direction of the strip-shaped polarizing film, and continuously cuts out the slice-shaped polarizing film intermediate 1 2 as the first optical film intermediate (step S2). The design method of the conveying length L and the cutting angle 0 will be described later. Step 2: Adhesion of the fixed-size polarizing film and the retardation film roller (steps S3, S4) In this process, the belt-shaped retardation film 20 is sent out from the retardation film roller 21 (step S3), In addition to laminating the polarizing film intermediate 12, the polarizing film intermediate 12 is also cut along the shape of the polarizing film intermediate 12 (step S 4). In this process, first, the protective film 20 b is peeled from the belt-shaped retardation film 20 from the retardation film roll 21, and is sent out while the retardation film 20a is exposed (step S3). At this time, as shown in FIG. 4 (b), while changing the vertical and horizontal directions of the polarizing film intermediate 12, the polarizing film 10d is peeled off from the polarizing film intermediate 12 and one side is adhered. The layer 10c is exposed, and is supplied onto the strip-shaped retardation film 20 while being provided. In addition, in this embodiment, since this polarizing film intermediate 1 2 has (please read the precautions on the back first. This page)

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This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -19-520452 Printed by the Shell Standard Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Λ7 R * 7 V. Description of the invention (17). · Adhesive layer 1 0 C, therefore, can be directly supplied and bonded to the strip-shaped retardation film 20. In addition, as shown in FIG. 4 (c), a sliced polarizing film intermediate 12 is superposed on the strip-shaped retardation film 20 on the adhesive layer 10c side, and the polarized light is pushed by pressing. The film intermediate 1 2 is bonded to the strip-shaped retardation film 20 to form a strip-shaped optical film laminated intermediate 3 1 ° In addition, the strip-shaped optical film laminated intermediate 3 1 is again wound by a roller, but In this drum-like form, the intermediate body 31 is packed, stored, transported, and the like. At this time, although the drum may be wound so that the side of the belt-shaped retardation film is located on the outside or inside, it is preferable that the belt-shaped retardation film is located on the outside. Next, as shown in FIG. 4 (d), the strip-shaped optical film is laminated with the intermediate body 3 1, and cut along the shape of the sliced polarizing film intermediate body 12 to be bonded, and cut out. The slice-shaped optical film is laminated with the intermediate 3 2 (step S 4). Here, in step S2, the length (transportation length L) of the strip-shaped polarizing film 10 sent from the polarizing film intermediate 11 is preferably designed as a distance L > between the cut lines. It is equal to the width of the retardation film roll 21. According to this cutting, when the vertical and horizontal directions are changed and placed on the strip-shaped retardation film 20, in the polarizing film intermediate 12, the edge formed by the cutting is approximately the same as the strip-shaped retardation film 2 The two edges of 0 are consistent. That is, the polarizing film intermediate 12 can be bonded to the width of the strip-shaped retardation film 20. It should be in the middle of the adjacent polarizing film. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297mm) ~ -20- (TS first read the precautions on the back β write this page) m binding

520452 V. Description of the invention (18) When the bodies 1 ^ are bonded together without a space between them, a strip-shaped retardation film 20 is formed, and one side of the body is completely covered by the polarizing film intermediate 12 A band-shaped optical film is laminated with the intermediate body 31. In addition, between the polarizing film intermediates 1 2 and 12 bonded to the strip-shaped retardation film 20, if there is a need for work, there is no problem even if there is a slight gap. At the same time, the angle of the strip-shaped polarizing film 10 (cutting angle 0) is cut at the same time, so that the mutual angle (0) between the late phase axis of the retardation film 20 and the absorption axis of the polarizing film 10 can be a certain mutual Angle (00). Step 3: Multi-faceted inspection (step S5). The inspection was performed before the sliced optical film laminated intermediate body 32 was cut into individual optical film laminated wafers 30. In addition, in step S5, the sliced optical film laminated intermediate body 3 2 after inspection can be directly packed. Fourth process: multi-face trimming (step S6) The sliced optical film laminated intermediate body 3 2 is cut into individual optical film laminated wafers 30 by a cutting device such as a punch cutter. At this time, the cutting direction of the optical film laminated wafer 30 is determined based on the direction of the reference line of the target optical film laminated wafer, for example, the longitudinal direction thereof. That is, the absorption axis of the polarizing film 10 and the retardation axis of the retardation film 20 are adjusted based on the reference line of the optical film laminated wafer. (Xu Xian read the note on the back page) The paper size printed by the Central Sample Rate Bureau Shellfish Consumer Cooperative Co., Ltd. The paper size is applicable to China National Standard (CNS) A4 (210X297 mm) -21-520452 Λ7 V. Description of the invention (19) Step 5: Packing (Step S 7) Read the precautions on the back first and then fill in this page. While re-confirming each of the cut optical film laminated wafers 30, select and pack them. Here, regarding the best design method for the shape of the slice-shaped laminated intermediate body 3 2, that is, the best design method for the shape of the polarizing film intermediate body 12, the direction of the absorption axis of the polarizing film and its band shape are used. The case where the long sides of the polarizing film are consistent is taken as an example. Please refer to FIGS. 5 to 7 to describe step S 2. One of the sliced polarizing film intermediates 1 2 is sent from the polarizing film intermediate 11. The length L is parallelogram determined by the tailor. The order of the determination is as follows: β The optical film laminated wafer for the purpose is to estimate the desired mutual angle within the range of 0 ° to 180 ° (from the absorption axis of 10 to the retardation phase of the retardation film 20) Angle between the axes). According to 的 of the mutual angle (0 〇) obtained in ①, the strip-shaped retardation film 20 is determined in accordance with 1. The direction of the late phase axis of 0 is the cut-off angle 0 ① Yes, under + The axes of the polarizing film ② The table below is printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shelley Consumer Cooperative, and the paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -22-Table 1 Certain mutual angles (00 ) The direction of the retardation axis of the strip-shaped retardation film used is 0 ° ^ Θο ^ + 500 + 1 30 0 S 0 〇S +180 0 The direction that intersects perpendicularly to the long side direction + 40 ° ^ θ 〇 ^ +140 ° is parallel to the long side direction 520452 Λ7 ___B7 V. Description of the invention (2〇) As can be seen from Table 1, when a certain mutual angle (0.) is above + 40 °, + 5 〇 σ or below, or When it is above +1 3 0 ° and below +1 40 °, the direction of the retardation axis of the strip-shaped retardation film used may be a direction that intersects perpendicularly with respect to the long side direction, or may be parallel direction. ③ Based on the mutual angle 0 calculated in ①. With respect to the effective width WSL of the retardation film roll 21 used, the cutting angle 0 and the feed-out length L of the polarizing film roll 11 are calculated in accordance with Table 2 below. (Read the precautions on the back to write this page) | _ 装 ·

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Employees of the Central Bureau of Standards of the Ministry of Economic Affairs print the table 2 Late cutting angle of the strip-shaped retardation film (0) The length of the phase axis of the strip-shaped polarizing film (L) is perpendicular to the long side. 0 —9〇W sl / si η direction (0-9 0.) Intersects with the long side direction in parallel Θ 0 W sl / si η direction (0 〇) This paper size applies the Chinese National Standard (CNS) A4 specification ( 210X297 mm) -23-520452 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Λ7 B7 ___ · _ V. Invention Description (21) 'In addition, the cutting angle is 0, as described above, which is the first optical device in the form of a band. The angle of the long side of the film is the angle relative to this, but it is viewed from the side opposite to the side of the second optical film (belt-shaped retardation film) bonded to the belt. The counterclockwise direction is a positive angle. Therefore, when the angle of the absorption axis of the polarizing film 10 with respect to the reference line of the optical film laminate wafer is set, and the angle of the retardation axis of the retardation film 20 with respect to the reference line When 0 〃, then a · When used The direction of the retardation axis of the strip-shaped retardation film is parallel to the longitudinal direction of the strip-shaped retardation film, and the slope of the cut increases to the upper right. b. When the direction of the retardation axis of the strip-shaped retardation film used is parallel to the longitudinal direction of the strip-shaped retardation film, the slope of the cut decreases to the lower right. c. When the direction of the retardation axis of the strip-shaped retardation film used perpendicularly intersects with the longitudinal direction of the strip-shaped retardation film, the slope of the cut is decreased to the lower right. d. When the direction of the retardation axis of the strip-shaped retardation film used perpendicularly intersects with the longitudinal direction of the strip-shaped retardation film and 0 pL>, the cutting slope rises to the upper right. In addition, 0PL and the optical film laminated wafers are all viewed from the polarizing film side (the surface of the first optical film side, the counterclockwise direction is positive 0. For example, as shown in FIG. 5 (b), when 0 p L < 0 s L, and + 45 ° ^ 00 ^ 130 °, for a strip-shaped retardation film (read this first and then read the note on this page) m "<

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This paper size applies the Chinese National Standard (CNS) A4 specification (210X29? Mm) -24-520452 Λ7 ΕΠ 5. Description of the invention (22) 2 0 The direction of the retardation axis, the cutting angle of the polarizing film roll 1 1 0 and Consider the setting of the feed length L. ① Calculate the mutual angle (0.). 0 Because + 45 ° $ 00 ^ + 135 °, according to Table 1, the strip-shaped retardation film 2 0 uses the direction of the slow phase axis parallel to the long side direction (usually a longitudinally extended product). ③ According to Table 3, the cutting angle (0) becomes 0 °, and the feed length (L) becomes WSL / (sin0〇). In addition, Fig. 6 (a) shows an example of a cutting pattern at the time of facet trimming. Fig. 6 (b) shows an example of a cut out pattern of the wafer when the same optical film laminated wafer is produced by a conventional method. Consider also the case where 0PL > 0SL shown in Figure 5 (C) and + 135 ° $ 00 + 180 °. ① Calculate mutual angle (0). ② Since + 135 ° $ 0 < +18. Therefore, according to Table 1, the strip-shaped retardation film 20 uses a late phase axis that intersects its long side perpendicularly (usually a horizontally extending product). ③ According to Table 2, the cutting angle (0) becomes -90 °, and the feed length becomes

Wsl / (sin (0〇-9O〇) 〇 Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economy-Packing-(Please read the precautions on the back page first)

Fig. 7 (a) shows an example of a cutting pattern at the time of facet trimming. Fig. 7 (b) shows an example of a cut out pattern of the wafer when the same optical film laminated wafer is manufactured by a conventional method. According to the best design method described above, the length (L >) of the strip-shaped polarizing film 10 between lines can be used to cut the width (W s L) of the strip-shaped retardation film 20 . That is, if the obtained paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -25- 520452 ί / Β 5. Description of the invention (23). · The sliced polarizing film intermediate 1 The distance between the two sides (L >) is equal to the width (WSL) of the strip-shaped retardation film 20, and the length of the strip-shaped polarizing film 10 sent from the polarizing film roll 11 (the sending length L) is set. In addition, the distance between the two sides of the obtained sliced polarizing film intermediate 12 and 2 does not need to be strictly equal to the width (WSL) of the band-shaped retardation film 20, in fact, as long as it is about It suffices to fit within the range of the strip-shaped retardation film. Among the best design methods described above, a better design method is a design method in which the strip-shaped retardation film 20 to be used is selected according to the following Table 3. Table 3 A certain mutual angle (0〇) The direction of the retardation axis of the strip-shaped retardation film used is 0 ° ^ 0 ^ +45 ° + 135 ° ^ Θ 〇 ^ +180 ° perpendicularly intersect with the long side direction Direction + 45 ° ^ Θ 〇 ^ +135 ° Parallel to the long side direction Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs-Packing-(诮 Read the precautions on the back first to write this page)

As can be seen from Table 3, in a better design method, when a certain mutual angle (0) is + 45 ° or + 130 °, the retardation axis direction of the strip-shaped retardation film used may be relative Intersect perpendicularly to the long side, or parallel. According to this better design method, when cutting the strip-shaped polarizing film 10, this paper size is applicable to China National Standard (CNS) A4 (210X297 mm) -26-Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, India 520452 5. Description of the invention (24) · The absolute angle 断 of the cutting angle 0 at the time of the calculation is based on Table 2 and is often above 45 °. Therefore, the shape of the sliced polarizing film intermediate 12 cut out may be adjacent. The two angles formed by the two sides are both 45 ° or more, which is easy to handle, and a parallelogram shape that can improve the efficiency of the obtained optical film laminated wafer. Here, a schematic structure of a bonding apparatus used in an optical film laminated wafer manufacturing system to which the manufacturing method of the optical film laminated wafer of this embodiment is applied will be described. As shown in FIG. 8, the bonding device 1 includes a protective film take-up roller 2a, an auxiliary roller 2b, an upper bonding roller 2c, a lower bonding roller 2d, a carrier film roller 2e, and a carrier film 2. First, a phase difference film roller 21 is mounted on the bonding portion (for bonding the polarizing film intermediate 12 and the strip-shaped phase difference film 20) to the bonding portion via a shaft provided on a shaft portion of the roller. On a support member (not shown) above. From the installed retardation film roll 21, a strip-shaped retardation film 20 is sent to the direction of the lower bonding portion. In addition, before the strip-shaped retardation film 20 hits the upper laminating roller 2 c, the protective film 2 0 b passes through the auxiliary roller 2 b to be peeled off by the protective film winding roller 2 a, so that The retardation film 20a is exposed. On the other hand, the polarizing film intermediate 1 2 cut into obliquely sized slices by a polarizing film cutting device (not shown) changes the vertical and horizontal directions with respect to the bonding direction of the bonding device 1 Will also be placed on the carrier film 2f. Here, the carrier film 2 f is a laminating roller 2 d which is set directly below the laminating section and the paper size which is placed in the laminating direction is applicable to the Chinese National Standard (CNS) A4 specification (210X297). PCT) -27-(¾Read the notes on the back first and write this page), 1Τ

520452 Λ7 IV____ 5. Description of the invention (25) The film on the carrier film roller 2e in the upper position. In addition, the sliced polarizing film intermediate body 1 2 placed on the carrier film 2 f is transferred from the carrier film 2 f to the carrier film 2 f by the rotation of the laminating roller 2 d and the carrier film roller 2 e. It is provided between the pair of bonding rollers 2c and 2d of a bonding part in the up-down direction. Before the self-slicing polarizing film intermediate 1 2 reaches between the lamination rollers 2 c and 2 d, the release film 10 d is peeled by the operator to expose the adhesive layer 10 c. In the bonding portion of the bonding device 1, a pair of bonding rollers 2c and 2d are provided in the vertical direction. The polarizing film intermediate 12 with the adhesive layer 10c exposed at the top and the strip-shaped retardation film 20 with the retardation film 20a exposed at the top are overlapped and supplied to the two bonding rollers. 2c, 2d. In addition, by being pressed by the two bonding rollers 2c and 2d, the polarizing film intermediate body 12 is bonded to the retardation film roller 21 to form a band-shaped optical film laminated intermediate body 31. Thereafter, the band-shaped optical film is laminated with the intermediate body 31 using a cutting device such as a cutter (not shown), and cut along the shape of the slice-shaped polarizing film intermediate body 12 bonded to the tape. In this way, the slice-shaped laminated intermediate body 3 2 is cut out. In addition, in the above-mentioned bonding device, although the placing operation of changing the direction of the polarizing film intermediate 12 and the operation of peeling the release film 1 0 d from the polarizing film intermediate 12 are performed manually by an operator, However, these operations can also be mechanized. As described above, according to this method of manufacturing an optical film laminated wafer according to the present embodiment, the compound polarized film is cut out from the strip-shaped polarized film 10. (TS first read the precautions on the back

The printed paper size of the staff consumer cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) -28 · The print of the staff consumer cooperative of the Central Standards Bureau of the Ministry of Economics 520452 Λ7 V. Description of the invention (26) The intermediate body 2 is such that the mutual angle (0) of the retardation axis of the strip-shaped retardation film 20 with respect to the polarizing axis of the slice-shaped polarizing film intermediate 12 becomes a constant mutual angle (0.). , The sliced polarizing film intermediate 12 is laminated on the strip-shaped retardation film 20 to form a strip-shaped optical film laminated intermediate 3 1, and then the strip-shaped optical film laminated intermediate 3 1 Is cut along the shape of the sliced polarizing film intermediate 12 to cut out a sliced optical film laminated intermediate 3 2, and the sliced optical film laminated intermediate 3 2 is used to cut out an optical film laminated wafer 3 0 〇 This can reduce the previous process, that is, the process of cutting out the polarizing film wafer 1 1 3 from the polarizing film intermediate 1 12, and cutting out the retardation film intermediate from the retardation film roller 1 2 1 1 2 2 Cheng, and from the retardation film cut out 122 Intermediate retardation film 123 of the wafer process. In this embodiment, the retardation film 20 is bonded to a relatively rigid polarizing film 10 in a band-shaped state, and a band-shaped optical film stacking intermediate 31 and a slice-shaped optical film can be formed. Laminate intermediate 3 2. Therefore, by adhering the retardation film 20 to the polarizing film 10 in such a manner, it can be prevented from being bent. That is, it is not necessary to treat the retardation film 20 that needs to be handled during the manufacturing process as a retardation film wafer that is difficult to handle. When the retardation film 20, which is very thin and easily bends, is used as the second optical film, the effects of this embodiment can be particularly exhibited. To elaborate on this point, according to this embodiment, that is, in the (Please read the Cautions on the back page first)

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This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm). 29 520452 Λ7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (27) Banded retardation film 2 0 Laminated on the slice Before the shape of the polarizing film intermediate body 12 is processed, it is processed in a state in which the phase difference film roll 21 having a shaft in the shaft portion has a shaft, so that it does not bend. In addition, in the bonding device 1, since the retardation film roller 21 is directly bonded to the polarizing film intermediate 12, the retardation film can be prevented from being bent in the subsequent process, so the processing of the retardation film Made easy. Therefore, the defect rate of the optical film laminated wafer 30 becomes low. In addition, conventionally, bonding is performed after cutting out individual thin film wafers. However, in this embodiment, the optical film is laminated after the optical film is bonded and then cut out during the final trimming process. Therefore, the optical film is laminated. Wafer 30 has excellent dimensional accuracy. In the present embodiment, the slice-like retardation film 20 is sliced into pieces such that the mutual angle (0) of the retardation axis of the strip-shaped retardation film 20 with respect to the polarization axis of the polarizing film 10 is constant (0). The polarizing film intermediate 12 is bonded to the strip-shaped retardation film 20 to form a strip-shaped optical film laminated intermediate 31. Furthermore, in the present embodiment, the intermediate for dicing an optical film laminated wafer is formed into a sliced optical film laminated intermediate 32. It is possible to cut out a plurality of optical film laminated wafers 30 from the sliced optical film laminated intermediate body 32 by a single trimming operation. In the past, when the polarizing film wafer and the retardation film wafer were bonded together, the adhesive may ooze out between the two films, and the released adhesive would stick foreign matter such as chippings of the film. On the other hand, this embodiment ′ is because a strip-shaped retardation film is bonded to a slice-shaped polarizing film. (Read the precautions on the back first, install-write this page)

This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) · 30-Seal of Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs 520452 __; _ V. Description of the invention (28) Intermediate body 12 is cut into optical Since the thin-film laminated wafer 30 can reduce foreign matter such as chips from sticking out of the exuding adhesive. As a result, the incidence of foreign objects is reduced, so the incidence of defective products is reduced, and the inspection work becomes easy. In this embodiment, although the area of the band-shaped optical film laminated intermediate body 31 or the sliced optical film laminated intermediate body 3 2 is larger than that of the optical film laminated wafer, it can be stored directly. Moreover, in this embodiment, the optical film laminated wafer 30 is obtained by cutting out the sliced intermediate body 32 from the slice-shaped laminated intermediate body 32 during the multifaceted trimming process. Therefore, even when the retardation film 2 is manufactured, When the retardation axis of 0 is the same as the polarizing axis of the polarizing film 10, the mutual angle (0) is the same, but the size or the direction of the reference line is different. When a variety of optical film laminated wafers 30 are used, each size and the direction of the reference line can be ensured. The trimming pattern can cut out the optical film laminated wafer 30. Thereby, the band-shaped optical film-laminated intermediate body 31 and the slice-shaped optical film-laminated intermediate body 3 2 can be shared for each mutual angle (0). Furthermore, in this embodiment, the retardation film 20, which is generally very thin and easily bends, is bonded to the relatively rigid polarizing film 10 in a band-like state to form a band-like film. The optical film laminated intermediate body 31 and the sliced optical film laminated intermediate body 3 2 can prevent the retardation film 20 from being bent. Therefore, since the retardation film 20, which is relatively difficult to be processed in the manufacturing process, does not need to be directly processed as a difficult-to-handle slice or wafer, the defect rate of the optical film laminated wafer 30 will be low. (诮 Please read the notes on the back side first, write this page) • II equipment _ miss writing too

This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) -31 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 520452 Λ7 B? V. Description of the invention (29). Also, in this embodiment The polarizing film intermediate 12 is designed to cut the distance between the lines of the polarizing film to be substantially equal to the width of the strip-shaped retardation film 20. In addition, when the strip-shaped optical film laminate intermediate body 31 is formed into a slice-like shape such that the polarization axis of the polarizing film intermediate body 12 and the retardation axis of the belt-shaped retardation film 20 are at a constant mutual angle 0, The polarizing film intermediate 12 is formed by bonding a strip-shaped retardation film 20. Furthermore, the slice-shaped optical film laminated intermediate body 32 is cut along the shape of the polarizing film intermediate layer 12 by applying a strip-shaped retardation film 20 having a parallelogram-shaped polarizing film intermediate layer 12 attached thereto. Cut into parallelograms. · With these operations, in this embodiment, the polarizing film intermediate 12 can be continuously cut out from the polarizing film roll 11 without waste. In addition, the polarizing film intermediate 1 2 and the retardation film roller 21 can be bonded to each other while ensuring the mutual angle 0 to form a strip-shaped optical film laminated intermediate 3 1. Furthermore, since the retardation film roll 21 is covered with the polarizing film intermediate 12 without waste, the sliced optical film stacking intermediate 31 can be cut out without waste from the strip-shaped optical film stacking intermediate 31. Body 3 2. Furthermore, in this embodiment, the sliced polarizing film intermediate 12 and the sliced optical film laminated intermediate 3 2 are shapes capable of distinguishing the surface shape and the back surface shape. In this way, in each manufacturing process, it is possible to reduce the number of erroneous situations in which bonding or cutting is performed when the front and back surfaces are mistaken. For example, if you cut out a parallelogram polarizing film intermediate 1 2 from a raw material with a width of 1.0m (you should first read the precautions on the back and write this page).

This paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) · 32 · 520452 Printed by the Central Laboratories of the Ministry of Economic Affairs, Shellfish Consumer Cooperative, Λ7 IV 5. When the description of the invention (30), if the cutting angle is 0 at 89 ° The following (or 9 1. above) is easy to identify. Furthermore, according to the best design method of the polarizing film intermediate 12 according to this embodiment, regarding the cutting angle 0, since its absolute 値 | 0 | will not be smaller than 40 °, the polarizing film intermediate 12 will not change. It is slender. Thereby, the workability of the entire manufacturing process is not greatly deteriorated. Furthermore, even if the roll width of the retardation film roll 21 is changed, it is only necessary to change the feeding length L of the polarizing film roll 11 without changing the roll width of the retardation film roll 21. Furthermore, according to the conventional method, although it is necessary to design the retardation film intermediate 1 2 2 for the retardation film, according to this embodiment, it can be simplified. As described above, according to the manufacturing method of the optical film laminated wafer of this embodiment, the productivity can be greatly improved. In other words, the number of processes can be reduced, and the laminated intermediate body can be bonded together in many cases, and depending on the shape of the laminated intermediate body, workability and surface extraction rate can be greatly improved. It also improves handling and handling. In addition, during the bonding process, it is possible to reduce the mixing of foreign substances during bonding, so that in addition to improving inspection efficiency, efficiency can also be improved. Furthermore, since the roll-shaped belt-shaped optical film stacking intermediate 31 and the slice-shaped optical film stacking intermediate 32 can be shared according to a certain mutual angle, the productivity can be further improved. It can also reduce inventory. The examples are directed to a method for manufacturing an optical thin film laminated wafer using the present invention (the actual paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 33 " (Please read the precautions on the back of this page and write this page on vPf)) • ^^ 装 ·, 1Τ

520452 Λ7 V. Description of the invention (31) Example) and the case of using a conventional method (comparative example), as shown in Table 4 'The optical axis angle is 0PL, (that is, the reference for the absorption axis of the polarizing film The angle of the line is 0PL, and the angle of the reference line for the retardation axis of the retardation film is 0SL), and a certain mutual angle of 0. When an optical film laminated wafer with a product size as shown in Table 4 is obtained, then Table 4 shows the results obtained for each of the examples and comparative examples. (Please read the precautions on the back first 丨 _install-this page)

Printed by the Central Consumers' Cooperative of the Ministry of Economic Affairs. The paper size is applicable to Chinese National Standards (CNS) A4 (21 × 297 mm) -34-520452 Λ7. V. INTRODUCTION TO THE INVENTOR (32. Inch wash vegetables AS S5 ® ^ ΐΰ ® 4ff _ ™ ^ Parallel Parallel Parallel Orthogonal Orthogonal Orthogonal Orthogonal Orthogonal Orthogonal Parallel Or Parallel Orthogonal Plane Takes Improvement Rate "< CS < N m 1—H cn 1 OO CN 〇〇τ-Η Ο 1 CM cn rH inch CO r- inch ON ^ 3jJ 20.6 9.04 ， ·· 〇1 1 i OO vo cn inch 9 i ψ i ο CN vd Cvj ON Ό Ο ON r -cs vd 27.0 o cn y 丨 丨 丨 嶒 a \ inch | io.4 | Comparative example surface rate SL CO CN 〇〇OO Ό 1 78.2 1 νο m οο 1 88.0 1 1 78.0 1 1 66.8 1 1 68.3 I 1 68.6 1 ό mr—H s CO ON cn v〇 Simple average surface rate PL .74 ′ 1 73.9 1 —7, M, J 7L2.J 75,91 | 82.6 | 1 76.6 1 1 74.4 1 70.6 L.64, 1— “vo 1 62.0 1 79,4 J 〇 ^ i OO Access CO Ό ο inch ο cn inch cn 1 cockτ1 iri < y \ inch CN m 1 156 J § Example Rate SL | 84.4 | 92.0 | 1 82.6 1 1 82.9 1 OO OO OO OO tn OO 1 66.7 1 wn S 1 82.0 1 | 78.2 | 89.0 1 1 92.4.1 1 85.9 1 Area rate PL | 84.4 | 1 81 · 7 1 | 92.0 1 1 82.6 1 1 82.9 1 | 88.8 1 OO m OO 1 75.0 1 | 82.0 | | 77.8 | | 89.0 | 1 92,4— "Access cn OO T— ^ 1 1134 1 1 268 1 1 204 1 1 814 1 1 319 1 BU | 648 | | 1683 1 | 1210 1 Optical axis angle CO vn BU VO 1 (f—Η vn vn CN τ—H 〇§ g CU CN BU 1 102.5 1 OO BU 〇 fi 117 ^ 〇1 no—1 v〇CN 〇1 4 f H Product size vertical X horizontal (mm) 66.2 X 46.8 83.8 X 87.6 55.8 X 18.0 ο cs inch X 1 '< s 89.0 x 43.0 39.0 X 25.7 80.8 X 30.3 236.8 X 178.8 235.5 X 177.7 127.0 X 96.5 154.6 X 117.0 37.0 x 31.2 v〇CN CN x v〇rH m 66.5 X 28.0 mutual angle 〇 ^ φ 〇o OO inch 42.5 〇ί ο inch 〇inch 177.5 o vn cn wn m cn ό cn to cn f 4 Jobs_Zhao Yao: Ί S 米 Nen Mirai: Ί d .1- I (Please read the precautions on this page first), 1Τ

Quan. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -35- 520452 A7 B7 V. Description of the invention In this example and the comparative example, the width (wp I *) is 1 A strip-shaped polarizing film with a width of 0 0 0 mm, and a retardation film with a retardation axis parallel to the longitudinal direction, and a strip-shaped retardation film with a width (WSL) of 70 mm, or a retardation film with a retardation axis and a longitudinal direction. The retardation film 20 is a strip-shaped retardation film 20 that intersects vertically and has a width (WSL) of 1000 mm. In the embodiment, in order that the slice-shaped polarizing film intermediate body can cover the strip-shaped retardation film without waste, the distance L / between the lines for cutting the polarizing film is designed to be approximately equal to the strip-shaped Width of the retardation film. In addition, in Table 4, the so-called access in the examples refers to an optical film stack obtained from a sliced optical film stack intermediate obtained by the method of the present invention designed as described above. The number of wafers, and the so-called access in the comparative example means that in the conventional method, a polarizing film having the same area as the above-mentioned "slice-shaped optical film laminated intermediate body" of the corresponding embodiment is used, and Number of optical film laminated wafers obtained from retardation film. The so-called surface extraction rate of the polarizing film refers to the percentage of the total area of the obtained optical film laminated wafer relative to the use area of the strip-shaped polarizing film, and the so-called surface extraction rate of the retardation film refers to the obtained The total phase of the area of the optical film laminated wafer. The ratio (%) of the area used for the strip-shaped retardation film. The so-called improvement rate of the surface of the polarizing film is the number (%) of the surface rate of the polarizing film in the comparative example minus the surface rate of the polarizing film in the comparative example, and the surface of the so-called retardation film. The improvement refers to subtracting the surface extraction ratio of the retardation film in the comparative example from the surface extraction ratio of the retardation film in the example. This paper size applies to the Chinese National Standard (CNS) A4 (210X297 mm) (Please read the precautions on the back «install-write this page) Order printed by the Central Consumers Bureau of the Ministry of Economic Affairs and Consumer Cooperatives -36- 520452 Λ7 B Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of the invention (34) Brief description of the drawing. Figure 1 is a flowchart showing the outline of a method for manufacturing an optical film laminated wafer according to one embodiment of the present invention. Fig. 2 is a diagram showing the outline of the structure of an optical film applied to the manufacturing method of the optical film laminated wafer shown in Fig. 1. (a) is an end view of a polarizing film, and (b) is a phase. An end view of the poor film, and the same view (c) is an end view of the optical film laminated wafer. FIG. 3 is a diagram for explaining an outline of a manufacturing process of an optical film manufactured by the method for manufacturing an optical film laminated wafer shown in FIG. 1. FIG. 4 is a table showing the optical film lamination according to FIG. The description of a part of the manufacturing process of the optical film manufactured by the wafer manufacturing method is as follows: (a) is a strip-shaped polarizing film; (b) is a cutsheet-shaped polarizing film intermediate; c) is a laminated optical film intermediate body, and the same figure (d) is a sliced intermediate body. Fig. 5 is an explanatory diagram showing a design method of a sliced polarizing film intermediate in the manufacturing method of the optical film laminated wafer shown in Fig. 1. The same diagram (a) is an explanatory diagram for selecting a retardation film. The same figure (b) is an explanatory diagram of the cutting angle when a retardation film (usually a longitudinally stretched film) whose direction of the late phase axis is parallel to its long side direction is used. An explanatory diagram of the cutting angle when the retardation film (usually a horizontally stretched product) of the axis direction perpendicularly intersects with the long side direction. (Read the precautions on the back and write this page) III.

This paper size applies to the Chinese National Standard (CNS) A4 (210X297 mm) -37-520452 Printed by the Bayer Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. Ⅴ. Description of the invention (35). · Figure 6 is for table use An explanatory diagram of the cut-out form of the optical film laminated wafer when the retardation film whose direction is parallel to its longitudinal direction is parallel to the retardation film (usually a longitudinally stretched product), and the same figure (a) is based on Figure 1. The manufacturer of the manufacturing method of the optical film laminated wafer shown, and the same figure (b) are the manufacturers of the manufacturing method according to the conventional technique. FIG. 7 is an explanatory diagram of a cut-out pattern of an optical film laminate when a retardation film (usually a horizontally stretched product) whose direction of the late phase axis intersects perpendicularly to its long side direction is used. (A ) Is a manufacturer according to the manufacturing method of the optical film laminated wafer shown in FIG. 1, and (b) is a manufacturer according to a conventional manufacturing method. FIG. 8 shows a schematic structure of a bonding device used in an optical film laminated wafer manufacturing system to which the optical film laminated wafer manufacturing method shown in FIG. 1 is applied. The same figure (a) is a plan view and the same figure. (B) is a front view. FIG. 9 is an explanatory diagram showing a form of multi-face trimming during the manufacturing process of an optical film according to the manufacturing method of the optical film laminated wafer shown in FIG. 1. FIG. Fig. 10 is a flowchart showing the outline of a method for manufacturing an optical film laminated wafer according to a conventional technique. FIG. 11 is an explanatory diagram showing the outline of the manufacturing process of an optical film according to the method for manufacturing an optical thin film laminated wafer according to the conventional technique shown in FIG. 10. FIG. Comparison table of main components (please read the precautions on the back, especially on this page) m equipment, " ° This paper size applies to China National Standard (CNS) A4 specification (210X297 mm 1-38-520452 B7 V. Description of the invention (36) Printed by the Beige Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 1 0 Polarizing film 1 0 a Polarizing film 1 0 b ΤΑ C film 1 0 e ΤΑ C film 1 1 Polarizing film roller 1 2 Polarizing film intermediate 2 0 retardation film 2 0 a retardation film 2 0 b. Protective film 2 0 c adhesive layer 2 0 d release film 2 1 retardation film roller 3 0 optical film laminated wafer 3 2 optical film laminated intermediate 1 1 0 polarized light Film 1 1 1 Polarizing film roller 1 1 2 Polarizing film intermediate 1 1 3 Polarizing film wafer 1 2 0 Phase difference film 1 2 1 Phase difference film roller 1 2 2 Phase difference film intermediate 1 2 3 Phase difference film wafer (please (Please read the caution page on the back first)

、 1T This paper size is applicable to China National Standard (CNS) A4 specification (210X297mm) -39-

Claims (1)

520452 丨 Announcement Printed by B8 C8 D8 Printed by the Consumers ’Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 6. Patent Application Pages 1 ~~ 1 · A method for manufacturing optical film laminated wafers, which is mainly a method of manufacturing the first optical film A method for laminating a parallelogram optical film laminated intermediate body laminated with a second optical film is a method of forming a first optical film in a band shape whose optical axis is parallel or perpendicular to the longitudinal direction of the optical axis and the longitudinal direction of the optical axis The second optical film is formed by parallel or perpendicular intersecting strips so that the mutual angle (0) of the optical axis of the second optical film with respect to the optical axis of the first optical film is equal to a certain mutual angle (0), It is characterized in that: (1) two sides which are cut out from the strip-shaped first optical film and are parallel to the angle (0) equal to the angle 0 or (0 to 90 °) with respect to the long side direction, and the The distance between the two sides is approximately equal to the width of the band-shaped second optical film and is a slice-shaped first optical film intermediate body having a parallelogram shape. (2) If the two sides of the slice-shaped first optical film are along the band, No. 2 The two edges of the film are measured, and the obtained slice-shaped first optical film intermediate is laminated on the tape-shaped second optical film, and the sliced first optical film intermediate and the tape-shaped second optical film are obtained one by one. (3) The obtained strip-shaped optical film laminated intermediate body is cut along the shape of the laminated first optical film intermediate body. 2 · If the method for manufacturing an optical film laminated wafer according to item 1 of the patent application scope, the certain mutual angle (0.) is + 40 ° or more, + 140 ° or less, and the shape of the first optical film is The optical axis is parallel to it, and the long-axis direction is parallel to it, and the optical axis of the second optical film in the shape of a strip is related to it (please read the precautions on the back first, and then I order this page) This paper size is applicable to China National Standard (CNS) A4 (210X297 mm) -40- 520452 Α8 Β8 C8 D8 6. Scope of patent application The long side direction is parallel. f Please read the precautions on the back before filling in this page) 3 · If the method of manufacturing the optical film laminated wafer in the first patent application scope, the certain mutual angle (θο) is above 0 °, + 5 Q. Below, or above + 130 ° and below + 180 °, the optical axis of the band-shaped first optical film is parallel to its long side, and the optical axis of the band-shaped second optical film is long. The directions intersect perpendicularly. 4 · According to the method for manufacturing an optical film laminated wafer according to item 1 of the patent application scope, the first optical film is a polarizing film, and the second optical film is a retardation film. _ 5 · A method for manufacturing an optical thin film laminated wafer, characterized in that the optical thin film laminated wafer is cut out from the optical thin film laminated intermediate body obtained by the method according to any one of items 1 to 4. 6 · A laminated optical film laminated intermediate, characterized in that the first optical film and the second optical film are printed by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, such that the optical axis of the second optical film is relative to the first optical The mutual angle (Θ) of the optical axes of the film becomes a certain angle (Θ.). They are generally laminated, and have two sides that intersect parallel or perpendicular to the optical axis of the first optical film, and optical properties of the second optical film. The first optical film in the shape of a slice and the other two parallelograms whose axes are parallel or perpendicular to each other are laminated on a strip-shaped second optical film. 7 · If the belt-shaped optical film laminated intermediate of item 6 of the patent application has a certain mutual angle (θ〇) of + 40 ° or more and + 140 ° or less, the sliced first optical film is Two sides parallel to the optical axis and the other two sides parallel to the optical axis of the second optical film. The paper size applies the Chinese National Standard (CNS) M specification (210x297 mm) -41-520452 A8 B8 C8 D8 ___________________ 々, application Patented range of parallelograms. 8 · If the belt-shaped light-emitting film laminated intermediate body of item 6 of the patent application has a certain mutual angle (.θ〇) at 0. Above, + 5 0. Below, or above + 130 ° and below + 180 °, the sliced first optical film has two sides parallel to its optical axis and perpendicular to the optical axis of the second optical film. The other two sides of the parallelogram. 9 · A slice-shaped optical film laminated intermediate body, which is obtained from the strip-shaped optical film laminated intermediate body according to any one of items 6 to 8. -C Please read the notes on the reverse side before filling out this page) Order 4 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper applies the Chinese National Standard (CNS) Α4 specification (210X297 mm) -42-