CN114236665A - Method and apparatus for manufacturing optical film - Google Patents
Method and apparatus for manufacturing optical film Download PDFInfo
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- CN114236665A CN114236665A CN202210117239.1A CN202210117239A CN114236665A CN 114236665 A CN114236665 A CN 114236665A CN 202210117239 A CN202210117239 A CN 202210117239A CN 114236665 A CN114236665 A CN 114236665A
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- 239000012788 optical film Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010408 film Substances 0.000 claims abstract description 99
- 238000005520 cutting process Methods 0.000 claims abstract description 48
- 239000011295 pitch Substances 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 53
- 238000010008 shearing Methods 0.000 description 6
- 239000010409 thin film Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
- B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
- B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
- B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polarising Elements (AREA)
- Control Of Cutting Processes (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Provided are a method and an apparatus for manufacturing a film sheet (optical film) in which functional parts can be accurately arranged from a long strip film. The method for manufacturing the optical film comprises the following steps: a step of sequentially cutting a strip-shaped film, which has 2 or more detected portions in the width direction and 2 or more detected portions in the length direction, from one side to the other side in the width direction of the strip-shaped film, at predetermined feeding pitches in the length direction; and detecting the position of the detected part when cutting the strip-shaped film, positioning a cutting line based on the detected position of the detected part, and obtaining the film pieces with the detected part one by one.
Description
The present application is a divisional application of the present invention, which is entitled "method and apparatus for manufacturing optical film" and is filed on 25/11/2015 of chinese patent application No. 201580002766.6 by the present applicant.
Technical Field
The present invention relates to a method and an apparatus for manufacturing an optical film.
Background
Conventionally, various optical films such as a polarizing film and a retardation film have been used in an image display device such as a liquid crystal display device, and by providing these optical films, the image display device exhibits desired image display characteristics. In general, an optical film is a film sheet which is punched out into a predetermined product shape by a punching device after a long film made of a predetermined resin material is produced (for example, patent document 1).
Depending on the method of using the optical film, a functional portion such as an alignment mark may be provided at a specific position on the surface of the optical film. With the recent advancement of the functions of image display devices, it is required to accurately arrange the functional portions of the optical film so as not to be deviated.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 11-231129
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made to solve the above conventional problems, and a main object thereof is to provide a method and an apparatus for manufacturing a film sheet (optical film) in which functional portions can be accurately arranged from a long strip-shaped film.
Means for solving the problems
The invention relates to a method for manufacturing an optical film sheet for an image display device with a camera part, which comprises the following steps: a step of sequentially cutting a strip-shaped film, which has 2 or more detected portions in the width direction and 2 or more detected portions in the length direction, from one side to the other side in the width direction of the strip-shaped film, at predetermined feeding pitches in the length direction; and detecting the position of the detected part when cutting the strip-shaped film, and positioning the cutting line based on the detected position of the detected part to obtain the film piece with the detected part one by one, wherein the strip-shaped film is a strip-shaped polarizing piece, and the detected part is a non-polarizing part.
In the method for manufacturing an optical film sheet for an image display device having a camera unit according to the present invention, the position of the detected unit is detected by using a camera.
Further, a method for manufacturing an optical film sheet for an image display device having a camera unit according to the present invention includes the steps of: detecting a widthwise one-side end edge of the belt-like film before cutting the belt-like film in a widthwise direction; and moving a cutting member from one side to the other side in the width direction of the strip-shaped film when cutting the strip-shaped film, and determining the moving direction of the cutting member based on the detected one-side end edge.
Further, an apparatus for manufacturing an optical film according to the present invention includes: a conveying member for conveying the strip-shaped film at a predetermined longitudinal direction feeding pitch; a detection member for detecting a detection target portion of the belt-like film; and a cutting member that moves from one side to the other side in the width direction of the strip film, and that performs positioning of a cut line with reference to the position of the detected portion that is detected, the strip film being a long polarizing material, the detected portion being a non-polarizing portion.
In the apparatus for manufacturing an optical film according to the present invention, the detecting member further detects one side edge in the width direction of the strip-shaped film, and determines the moving direction of the cutting member based on the detected one side edge.
Effects of the invention
According to the present invention, the functional unit is used as the detected unit, the position of the detected unit is detected, and the shear line is positioned with reference to the detected position of the detected unit, whereby the optical film in which the detected unit (functional unit) is accurately arranged can be obtained.
Drawings
Fig. 1 shows schematic diagrams of (a), (a') and (b) to (d) in the method for producing an optical film according to an embodiment of the present invention.
Fig. 2(a) to (c) are schematic plan views illustrating examples of the arrangement pattern of the detection target portions according to the embodiment of the present invention.
Detailed Description
Fig. 1(a), (a') and (b) to (d) are schematic views showing a method for producing an optical film according to an embodiment of the present invention. The manufacturing method of the invention comprises the following steps: cutting a strip-shaped film 100 sequentially from one side to the other side in the width direction of the strip-shaped film 100 at predetermined feeding pitches in the length direction, the strip-shaped film 100 having 2 or more detection target portions 11 in the width direction and 2 or more detection target portions 11 in the length direction; and detecting the position of the detected part 11 when cutting the strip-shaped film 100 (fig. 1 a), positioning the cut line with reference to the detected position of the detected part 11 (fig. 1 b), and obtaining the film pieces 10 having the detected parts 11 one by one.
Therefore, the apparatus for manufacturing an optical film used in the method for manufacturing an optical film according to the present invention includes: a conveying member for conveying the belt-shaped film at a predetermined longitudinal direction feed pitch (hereinafter, simply referred to as a feed pitch); a detection member for detecting a detection target portion of the belt-like film; and a shearing member. Preferably, the cutting member is moved from one side to the other side in the width direction of the strip-shaped film, and the cutting line is positioned with reference to the detected position of the detected portion. Fig. 1 (a') is a schematic cross-sectional view showing an example of the detecting member and the shearing member. In this example, a rectangular cutting blade (for example, thomson blade) is used as the cutting member 20. In addition, a camera is used as the detection means 30. In one embodiment, as illustrated, the detection member 30 is integrally constructed with the shear member 20 and is provided to be movable along the rail 40. In another embodiment, the detecting member is provided separately from the cutting member, the detecting member is fixed to be capable of detecting the detected portion by imaging a predetermined region of the strip-shaped film, and the cutting member is provided to be capable of moving.
In the manufacturing method of the present invention, as described above, the film sheet 10 having the detection target portions 11 is obtained one by sequentially cutting the strip-shaped film 100 from one side to the other side in the width direction of the strip-shaped film 100 (from the left side to the right side in the paper surface in the example shown in fig. 1) for each feeding pitch, and the strip-shaped film 100 has 2 or more detection target portions 11 in the width direction and 2 or more detection target portions 11 in the length direction. In the present specification, the longitudinal direction is a direction that can correspond to the conveyance direction Y of the belt-like thin film, but is not merely parallel to the conveyance direction Y, and means a direction exceeding-45 ° and less than 45 ° with respect to the conveyance direction Y. The width direction means a direction of-45 ° to 45 ° with respect to a direction X orthogonal to the conveying direction Y.
The above-mentioned strip-shaped film is, for example, a long optical film having an optical axis. The film sheet obtained by the present invention is suitable for use as an optical film product used in an image display device, for example. Specific examples of the optical film having an optical axis include a retardation film and a polarizing film.
In the thin film sheet 10, the detection target portion 11 is a portion (functional portion) exhibiting a predetermined function. In other words, in the present invention, the functional section is defined as the detected section, and the cut line is determined based on the functional section. According to the present invention, since the cutting position is determined after the position of the detection target portion is detected, a thin film piece in which the detection target portion (functional portion) is accurately arranged can be obtained. Even when the interval between the detection sections on the belt-like film varies or the belt-like film meanders, a film sheet in which the detection sections are accurately arranged can be obtained. On the other hand, in the conventional method of simultaneously cutting a plurality of film sheets, the cutting position cannot be adjusted in accordance with the state of the tape-shaped film side such as the variation of the intervals between the functional portions and the meandering of the tape-shaped film, and thus a film sheet in which the detection target portion is accurately arranged cannot be obtained. Examples of the detection section (functional section) include a non-polarizing section (i.e., a section exhibiting a function of allowing all polarization components to pass) in a polarizer having the non-polarizing section. Other examples of the detected unit (functional unit) include a calibration mark.
The detection target portion 11 is a portion distinguishable from portions of the strip film 100 other than the detection target portion 11. The detection target portion 11 is preferably distinguishable from portions other than the detection target portion 11 in appearance. In one embodiment, the light transmittance of the detection section 11 is different from that of the sections other than the detection section. In another embodiment, the detected part 11 has a different color tone and/or shade from the other parts. In fig. 1, the above-described difference in appearance is not shown for easy viewing, and instead, the outline of the detection target portion 11 is shown by a solid line.
Fig. 2(a) is a schematic plan view illustrating an example of the arrangement pattern of the detection sections 11 of the belt-like film 100, fig. 2(b) is a schematic plan view illustrating another example of the arrangement pattern of the detection sections 11, and fig. 2(c) is a schematic plan view illustrating another example of the arrangement pattern of the detection sections 11. The detection target portion 11 can be arranged in any appropriate arrangement according to the application of the film sheet and the like. The detection target portion 11 is preferably arranged substantially on a straight line in the width direction (fig. 2 (a)). The arrangement direction of the detection target sections 11 with respect to the widthwise end edges of the strip film 100 may be at any appropriate angle. That is, the arrangement direction of the detection sections may be orthogonal to the direction of the width direction edge of the strip film 100 (fig. 2(a)), or may not be orthogonal (fig. 2 (b)). The intervals between the detection sections 11 may be the same in the width direction and the length direction (fig. 2(a)) or may be different (fig. 2 (c)). According to the present invention, it is possible to obtain a film sheet in which detected portions are accurately arranged in accordance with various arrangement patterns of the detected portions. Further, even if the arrangement pattern is irregular as shown in fig. 2(c), for example, a thin film sheet in which the detection target portions are arranged with high accuracy can be obtained.
When the strip film 100 is cut, the position of the detection target portion 11 is detected as shown in fig. 1(a), and then the cut line 12 is positioned with reference to the detected position of the detection target portion 11 as shown in fig. 1 (b). More specifically, the position of the specific portion in the shape defined by the cut line 12 and the orientation of the planar shape defined by the cut line 12 may be controlled based on the detected position of the detected part 11 to position the cut line 12. The specific portion in the shape defined by the cut line 12 may be any portion of the shape, and for example, the center of gravity, the vertex, and one point on the side of the shape are mentioned. After the positioning of the cut line 12, the strip-shaped film 100 is cut, and the film pieces 10 having the detected portions 11 are obtained one by one. The shape of the membrane sheet 10 is defined by the cut line 12. The shape of the pellicle membrane 10 may be any suitable shape. Examples thereof include a rectangle, a square, a polygon, a circle, and an ellipse.
In one embodiment, a camera is used to detect the position of the detected part 11.
As a cutting member for cutting the strip film 100, any appropriate member may be used. In one embodiment, as shown in fig. 1, a strip-shaped film 100 is cut using a die 20 corresponding to the shape of the film sheet 10. For example, when a die cutter 20 such as a thomson cutter is used as the cutting member, the position of the detected part 11 is detected, and the position of a specific portion (for example, a center of gravity, a vertex, a point on a side, or the like of the shape) in the predetermined planar shape of the die cutter 20 and the direction of the predetermined planar shape of the die cutter 20 (that is, the angle with respect to the conveying direction Y and the direction X orthogonal to the conveying direction) are controlled based on the detected position of the detected part 11. After the shear line 12 is positioned, the die 20 is moved upward or downward toward the strip-shaped film 100 to cut the strip-shaped film 100, thereby obtaining the film piece 10.
Examples of the shearing member include shearing by laser irradiation, cutting by a drill, edge trimmer processing, and water jet cutting.
In one embodiment, when the strip-shaped film 100 is cut in the width direction, the cutting member 20 is moved from one side to the other side in the width direction of the strip-shaped film 100. After 1 film piece is cut out by the above operation, the cutting member is moved in the width direction, and the next film piece is cut out by the same operation as the above operation (fig. 1(b) to (d)). The movement of the cutting member 20 is preferably a linear movement. The moving direction of the shearing member 20 can be set to any appropriate direction according to the arrangement of the detected part 11. The moving direction of the shearing member 20 is preferably 90 ° ± 45 °, more preferably 90 ° ± 30 °, and still more preferably 90 ° ± 15 ° with respect to the direction of the one-side end edge of the strip-shaped film 100 in the width direction.
In one embodiment, before the strip-shaped film 100 is cut in the width direction, one side edge of the strip-shaped film 100 in the width direction is detected, and the moving direction of the cutting member 20 is determined based on the detected one side edge (more specifically, the direction of the one side edge). By determining the moving direction of the cutting member with reference to the widthwise end edges of the strip-shaped film, even when the strip-shaped film meanders, a film sheet in which the detection section (i.e., the functional section) is accurately arranged can be obtained.
For the detection of one side edge in the width direction of the strip-shaped film 100, a detection member for detecting the detection target portion 11 may be used, or another detection member different from the detection member for detecting the detection target portion 11 may be used. That is, the manufacturing apparatus of the present invention can include 1 or more detection members.
After the cutting of the strip film 100 is completed in one row in the width direction, the strip film 100 is conveyed by a predetermined feed pitch, and the cutting operation is performed in one row in the width direction for the next row. The operation of cutting a line in the width direction and the conveyance of the band-shaped film 100 by 1 pitch after the operation are repeated a predetermined number of times as 1 cycle, whereby a plurality of film pieces 10 can be obtained from the long band-shaped film 100. The feeding pitch can be set in accordance with the longitudinal interval of the detection target portion 11. For example, when the arrangement of the detection target portions in the longitudinal direction is parallel to the conveying direction Y, the feed pitch is preferably the same length as the longitudinal interval of the detection target portions 11.
In one embodiment, the strip-shaped film is a long strip-shaped polarizer having non-polarizing portions arranged at predetermined intervals in the longitudinal direction and the width direction. In the long polarizer, a portion other than the unpolarized portion (hereinafter also referred to as a polarizing portion) transmits a specific polarized light, whereas the unpolarized portion transmits all the polarized light components. Such a long polarizer is suitably used as a material for an image display device having a camera unit. More specifically, an image display device is configured by using a polarizer cut out from an elongated polarizer having the non-polarizing section and by aligning the position of the non-polarizing section with the position of the camera section, whereby an image display device having excellent camera performance and capable of achieving multiple functions and high functionality can be obtained. When a long polarizing plate having a non-polarizing portion is cut by the manufacturing method of the present invention, the position of the non-polarizing portion can be accurately set by aligning the long polarizing plate with the position of the camera portion of the image display device. In addition, since the absorption axis bodies of the polarizing portions of the elongated polarizer are present in the direction parallel to the width-direction end edges or in the direction orthogonal to the width-direction end edges, the directions of the absorption axes of the cut polarizers can be precisely controlled by appropriately arranging the non-polarizing portions (for example, as shown in fig. 2(b)) and adjusting the moving direction of the cutting member with respect to the conveying direction of the elongated polarizer. In addition, the variation in the direction of the absorption axis of each polarizer can be significantly suppressed.
In one embodiment, the non-polarizing portion is a discoloring portion formed by discoloring a predetermined portion of the polarizer intermediate. The discolored part can be formed by, for example, laser irradiation or chemical treatment (for example, acid treatment, alkali treatment, or a combination thereof). In another embodiment, the non-polarizing portion is a through-hole (typically, a through-hole through which the polarizer passes in the thickness direction). The through-hole can be formed by, for example, mechanical blanking (e.g., punch press, graver blanking, plotter, water jet) or removal of a predetermined portion of the polarizer intermediate (e.g., laser ablation or chemical dissolution).
The non-polarized light section can be visually distinguished from the other sections than the non-polarized light section based on color tone and/or light transmittance, and can be detected by the detection means. Therefore, in the manufacturing method of the present invention, the non-polarizing portion functions as the detection target portion 11.
Availability in industry
The production method of the present invention is suitably used for producing optical films such as retardation films and polarizer films. In particular, it is suitable for use in the production of polarizers for image display devices (liquid crystal display devices, organic EL devices) with cameras such as mobile phones including smart phones, notebook computers, and tablet computers.
Description of the symbols
A pellicle membrane
Detected part (functional part)
12.. a shear line
A cutting member (thomson knife)
A detection member
A strip of film
Claims (5)
1. A method for manufacturing an optical film sheet for an image display device having a camera section, comprising the steps of:
a step of sequentially cutting a strip-shaped film, which has 2 or more detected portions in the width direction and 2 or more detected portions in the length direction, from one side to the other side in the width direction of the strip-shaped film, at predetermined feeding pitches in the length direction; and
detecting the position of the detected part when cutting the strip-shaped film, positioning a cutting line based on the detected position of the detected part, and obtaining the film pieces with the detected part one by one,
the strip-shaped film is a strip-shaped polarizing member,
the detected part is a non-polarized part.
2. The method for manufacturing an optical film sheet for an image display device having a camera unit as claimed in claim 1,
the position of the detected part is detected using a camera.
3. The method for manufacturing an optical film sheet for an image display device having a camera section according to claim 1 or 2, comprising the steps of:
detecting a widthwise one-side end edge of the belt-like film before cutting the belt-like film in a widthwise direction; and
when the strip-shaped film is cut, the cutting member is moved from one side to the other side in the width direction of the strip-shaped film,
the moving direction of the cutting member is determined based on the detected one-side end edge.
4. An apparatus for manufacturing an optical film, comprising:
a conveying member for conveying the strip-shaped film at a predetermined longitudinal direction feeding pitch;
a detection member for detecting a detection target portion of the belt-like film; and
a cutting member which moves from one side to the other side in the width direction of the strip-shaped film and performs the positioning of the cutting line with the detected position of the detected part as the reference,
the strip-shaped film is a strip-shaped polarizing member,
the detected part is a non-polarized part.
5. The manufacturing apparatus of optical film as described in claim 4,
the detecting member also detects one side end edge in the width direction of the belt-like film,
the moving direction of the cutting member is determined based on the detected one-side end edge.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014243855A JP6146921B2 (en) | 2014-12-02 | 2014-12-02 | Optical film manufacturing method and manufacturing apparatus |
| JP2014-243855 | 2014-12-02 | ||
| CN201580002766.6A CN107041131A (en) | 2014-12-02 | 2015-11-25 | The manufacture method and manufacture device of optical thin film |
| PCT/JP2015/083040 WO2016088619A1 (en) | 2014-12-02 | 2015-11-25 | Method and device for producing optical film |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580002766.6A Division CN107041131A (en) | 2014-12-02 | 2015-11-25 | The manufacture method and manufacture device of optical thin film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114236665A true CN114236665A (en) | 2022-03-25 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010293483.4A Pending CN111483004A (en) | 2014-12-02 | 2015-11-25 | Method and apparatus for manufacturing optical film |
| CN202210117239.1A Pending CN114236665A (en) | 2014-12-02 | 2015-11-25 | Method and apparatus for manufacturing optical film |
| CN201580002766.6A Pending CN107041131A (en) | 2014-12-02 | 2015-11-25 | The manufacture method and manufacture device of optical thin film |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010293483.4A Pending CN111483004A (en) | 2014-12-02 | 2015-11-25 | Method and apparatus for manufacturing optical film |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201580002766.6A Pending CN107041131A (en) | 2014-12-02 | 2015-11-25 | The manufacture method and manufacture device of optical thin film |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6146921B2 (en) |
| KR (1) | KR101757604B1 (en) |
| CN (3) | CN111483004A (en) |
| TW (1) | TWI667111B (en) |
| WO (1) | WO2016088619A1 (en) |
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|---|---|---|---|---|
| JP6872312B2 (en) * | 2015-09-30 | 2021-05-19 | 日東電工株式会社 | Method for manufacturing polarizing plate |
| KR20220169754A (en) | 2021-06-21 | 2022-12-28 | 최은지 | Mixed Reality Sensory Learning Device using a three-dimensional puzzle |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2016088619A1 (en) | 2016-06-09 |
| KR20160087809A (en) | 2016-07-22 |
| KR101757604B1 (en) | 2017-07-12 |
| CN111483004A (en) | 2020-08-04 |
| JP6146921B2 (en) | 2017-06-14 |
| TWI667111B (en) | 2019-08-01 |
| TW201627119A (en) | 2016-08-01 |
| JP2016109722A (en) | 2016-06-20 |
| CN107041131A (en) | 2017-08-11 |
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