CN116381988A - Optical film and method for producing same - Google Patents
Optical film and method for producing same Download PDFInfo
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- CN116381988A CN116381988A CN202310255213.8A CN202310255213A CN116381988A CN 116381988 A CN116381988 A CN 116381988A CN 202310255213 A CN202310255213 A CN 202310255213A CN 116381988 A CN116381988 A CN 116381988A
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- liquid crystal
- crystal layer
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- alignment
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- 239000012788 optical film Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 196
- 238000001723 curing Methods 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 41
- 238000000576 coating method Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 16
- 238000013007 heat curing Methods 0.000 claims description 11
- 238000003848 UV Light-Curing Methods 0.000 claims description 10
- 238000007606 doctor blade method Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000007761 roller coating Methods 0.000 claims description 4
- 238000004528 spin coating Methods 0.000 claims description 4
- 230000001447 compensatory effect Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 200
- 239000010408 film Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000002356 single layer Substances 0.000 description 3
- UWCWUCKPEYNDNV-LBPRGKRZSA-N 2,6-dimethyl-n-[[(2s)-pyrrolidin-2-yl]methyl]aniline Chemical compound CC1=CC=CC(C)=C1NC[C@H]1NCCC1 UWCWUCKPEYNDNV-LBPRGKRZSA-N 0.000 description 1
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/587—No clear coat specified some layers being coated "wet-on-wet", the others not
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Polarising Elements (AREA)
Abstract
The invention discloses an optical film and a manufacturing method thereof, wherein the optical film comprises a base layer, an alignment layer and a plurality of liquid crystal layers, wherein the alignment layer is arranged on the base layer, the liquid crystal layers are sequentially arranged on the alignment layer along one side away from the base layer, and the alignment layer is used for being matched with the liquid crystal layers so as to enable liquid crystals in each liquid crystal layer to be arranged according to a preset sequence. The above-mentioned scheme can solve the problem that the optical film thickness is great in the related art.
Description
Technical Field
The invention relates to the technical field of optical film manufacturing, in particular to an optical film and a manufacturing method thereof.
Background
With the continuous development of display technology, the requirements of people on display performance of a display are continuously improved, such as higher contrast ratio, wider use viewing angle, and the like, and in order to improve the use experience of the display, a laminated structure of a plurality of liquid crystal film layers is added on the outer side of a screen of the display to improve the defects of the prior art. In the related art, when manufacturing a laminated structure, a single-layer liquid crystal film layer is formed by coating an alignment layer on a substrate and then coating a liquid crystal layer, and then a plurality of single-layer liquid crystal films are formed to be stacked to form a multi-layer liquid crystal layer structure. However, the manner of sequentially stacking a plurality of single-layer liquid crystal film layers to form a plurality of liquid crystal layers causes a problem that the thickness of the formed plurality of liquid crystal film layers is relatively large.
Disclosure of Invention
The invention discloses an optical film and a manufacturing method thereof, which are used for solving the problem of larger optical film thickness in the related technology.
In order to solve the technical problems, the invention is realized as follows:
in a first aspect, the application discloses an optical film comprising a base layer, an alignment layer and a plurality of liquid crystal layers, wherein the alignment layer is laminated on the base layer, the plurality of liquid crystal layers are laminated on the alignment layer in sequence along one side away from the base layer, and the alignment layer is used for being matched with the plurality of liquid crystal layers so that liquid crystals in each liquid crystal layer are arranged according to a preset sequence.
In a second aspect, the present application further discloses a method for manufacturing an optical film, where the optical film is the optical film according to the first aspect, and the plurality of liquid crystal layers includes a first liquid crystal layer and a second liquid crystal layer; the manufacturing method comprises the following steps:
coating the alignment layer on the base layer;
coating the first liquid crystal layer on one side of the alignment layer, which is away from the base layer;
curing the first liquid crystal layer;
coating the second liquid crystal layer on one side of the first liquid crystal layer, which is away from the alignment layer;
and curing the first liquid crystal layer and the second liquid crystal layer.
The technical scheme adopted by the invention can achieve the following technical effects:
the optical film disclosed by the embodiment of the application is characterized in that the alignment layer is arranged on the base layer, and the liquid crystal layers are arranged on one side, away from the base layer, of the alignment layer, so that the liquid crystal layers are aligned through the alignment layer, and liquid crystals in each liquid crystal layer are arranged according to respective preset sequences. Because one alignment layer is adopted to align the liquid crystal layers, each liquid crystal layer does not need to be provided with an alignment layer independently, and the light and thin optical film is facilitated.
Drawings
FIG. 1 is a schematic view of an optical film according to an embodiment of the present invention;
FIG. 2 is a flow chart of a first optical film manufacturing process according to an embodiment of the present invention;
fig. 3 is a flow chart of a second optical film manufacturing method according to an embodiment of the present invention.
Reference numerals illustrate:
100-base layer, 200-alignment layer, 300-liquid crystal layer, 310-first liquid crystal layer, 320-second liquid crystal layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The technical scheme disclosed by each embodiment of the invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 3, an optical film according to an embodiment of the present invention includes a base layer 100, an alignment layer 200, and a plurality of liquid crystal layers 300.
The base layer 100 may provide a basis for installation of other structural layers of the optical film. The alignment layer 200 is stacked on the base layer 100, and the alignment layer 200 is stacked on the base layer 100 by coating. The plurality of liquid crystal layers 300 are sequentially stacked on the alignment layer 200 along a side facing away from the base layer 100, and the alignment layer 200 is configured to cooperate with the plurality of liquid crystal layers 300 such that the liquid crystals in each liquid crystal layer 300 are aligned in a respective predetermined order. The plurality of liquid crystal layers 300 are sequentially stacked on the alignment layer 200 by coating.
It should be noted that the alignment layer 200 may align the first liquid crystal layer 300 in contact therewith so that the liquid crystals in the first liquid crystal layer 300 are aligned in a predetermined order. After the alignment of the first liquid crystal layer 300 is completed, the molecular structure arrangement of the surface of the first liquid crystal layer 300 facing away from the alignment layer 200 is fixed, and the second liquid crystal layer 300 stacked with the first liquid crystal layer 300 can achieve the alignment of the second liquid crystal layer 300 by intermolecular forces with the molecular structure of the surface of the first liquid crystal layer 300. After the alignment of the second liquid crystal layer 300 is achieved, the molecular structure of the surface of the second liquid crystal layer 300 facing away from the first liquid crystal layer 300 is already fixed, so that the next liquid crystal layer 300 can be aligned, and so on, so that the alignment of the plurality of liquid crystal layers 300 is performed through one alignment layer 200. The specific alignment principle is a well known technique.
The optical film disclosed in the embodiment of the present application is configured such that the alignment layer 200 is disposed on the base layer 100, and the plurality of liquid crystal layers 300 are disposed on the side of the alignment layer 200 facing away from the base layer 100, so that the plurality of liquid crystal layers 300 are aligned by the alignment layer 200, and thus the liquid crystals in each liquid crystal layer 300 are aligned according to respective predetermined sequences. Since one alignment layer 200 is used to align the plurality of liquid crystal layers 300, it is unnecessary to separately provide an alignment layer for each liquid crystal layer 300, thereby contributing to the light and thin optical film.
Optionally, the plurality of liquid crystal layers 300 may include at least one compensatory liquid crystal layer and one polarizing liquid crystal layer. By providing at least one compensatory liquid crystal layer and one polarizing liquid crystal layer, the amount of light leakage can be reduced, and problems such as contrast, chromaticity and the like can be greatly improved.
In an alternative embodiment, the plurality of liquid crystal layers 300 may be provided on the alignment layer by UV curing. Since the cost of the UV curing method is relatively low and the curing speed is relatively high, the cost of the alignment layer can be reduced and the process time can be saved by arranging the plurality of liquid crystal layers 300 in the UV curing method.
In another embodiment, the plurality of liquid crystal layers 300 may be disposed on the alignment layer 200 by heat curing. Since the liquid crystal layer 300 after the heat curing is relatively stable, the plurality of liquid crystal layers 300 are disposed on the alignment layer 200 by the heat curing, and thus the stability of the liquid crystal layer 300 can be improved.
It should be noted that the materials of the plurality of liquid crystal layers 300 may be the same or different, for example, each liquid crystal layer 300 may include one or more of a liquid crystal monomer, a liquid crystal polymer, a liquid crystal oligomer, a liquid crystal material containing a dye, or a liquid crystal material containing a chiral agent, and the materials of the plurality of liquid crystal layers 300 are not particularly limited herein.
The present application discloses a manufacturing method of an optical film, wherein the disclosed optical film is the optical film disclosed in the above embodiment, and the plurality of liquid crystal layers 300 includes a first liquid crystal layer 310 and a second liquid crystal layer 320; the manufacturing method comprises the following steps:
s101, an alignment layer 200 is coated on the base layer 100.
S102, a first liquid crystal layer 310 is coated on a side of the alignment layer 200 facing away from the base layer 100.
S103, the first liquid crystal layer 310 is cured.
It should be noted that the first liquid crystal layer 310 may be cured by UV curing or heat curing, but may be cured by other methods, which is not particularly limited in this application.
S104, coating the second liquid crystal layer 320 on the side of the first liquid crystal layer 310 facing away from the alignment layer 200.
S105, curing the first liquid crystal layer 310 and the second liquid crystal layer 320.
It should be noted that the second liquid crystal layer 320 may be cured by UV curing or by heat curing, but may be cured by other methods, which is not particularly limited in this application.
According to the control method disclosed by the embodiment of the invention, the alignment layer 200 is coated on the base layer 100, the first liquid crystal layer 310 is coated on one side, away from the base layer 100, of the alignment layer 200, and the first liquid crystal layer 310 is subjected to curing treatment, so that the first liquid crystal layer 310 can form a stable film layer, a basis can be provided for coating the second liquid crystal layer 320, the first liquid crystal layer 310 can be prevented from being polluted when the second liquid crystal layer 320 is coated, meanwhile, the stable first liquid crystal layer 310 can play an alignment assisting role for the second liquid crystal layer 320, and therefore the second liquid crystal layer 320 can be directly coated on the first liquid crystal layer 310 without independently arranging the alignment layer 200 on each layer of liquid crystal layer 300, thereby being beneficial to lightening and thinning an optical film and simplifying process steps. The first liquid crystal layer 310 and the second liquid crystal layer 320 are cured after the second liquid crystal layer 320 is coated, so that the first liquid crystal layer 310 can be further cured, thereby improving the stability of the optical film.
In one embodiment, the curing process of the first liquid crystal layer 310 includes:
s201, a primary curing process is performed on the first liquid crystal layer 310.
The curing process of the first liquid crystal layer 310 and the second liquid crystal layer 320 includes:
s202, the first liquid crystal layer 310 and the second liquid crystal layer 320 are subjected to a two-stage curing process.
Wherein the degree of curing of the primary curing treatment on the liquid crystal is smaller than that of the secondary curing treatment on the liquid crystal. The degree of curing may be determined by detecting the hardness, intermolecular structure, or the like of the liquid crystal layer, for example, the degree of curing may be large when the hardness of the liquid crystal layer is large, the degree of curing may be small when the hardness of the liquid crystal layer is small, and the degree of curing may be classified according to the hardness. Of course, the curing degree may be determined in other manners, and the present application is not particularly limited.
According to the control method disclosed by the embodiment of the invention, the first liquid crystal layer 310 is subjected to primary curing treatment, and the first liquid crystal layer 310 and the second liquid crystal layer 320 are subjected to secondary curing treatment, so that the first liquid crystal layer 310 does not need to be cured to a larger degree when being cured independently, and the first liquid crystal layer 310 and the second liquid crystal layer 320 are cured at a higher level after being coated with the second liquid crystal layer 320, thereby saving the time of a manufacturing process.
Alternatively, the secondary curing process is a complete curing process for the liquid crystal.
It should be noted that, the full curing process is to perform the maximum curing process on the first liquid crystal layer 310 and the second liquid crystal layer 320, for example, the curing degree may be divided into 0 to 100%, and then the full curing process may reach 100% curing degree, and the curing degree of the primary curing process may be any combination between 1% and 99%, where the combination manner needs to be determined according to the material, the environmental characteristics, the route of the manufacturing process, and other factors of the specific liquid crystal layer 300.
Optionally, the curing treatment is performed on the first liquid crystal layer 310, including:
in step A1, the first liquid crystal layer 310 is UV-cured.
The curing process of the first liquid crystal layer 310 and the second liquid crystal layer 320 includes:
and step A2, performing UV curing treatment on the first liquid crystal layer 310 and the second liquid crystal layer 320.
The manufacturing method disclosed by the embodiment of the application can reduce the cost and save the process time by adopting the UV curing mode to cure the first liquid crystal layer 310 and the second liquid crystal layer 320.
In one embodiment, the curing process of the first liquid crystal layer 310 includes:
in step B1, the first liquid crystal layer 310 is subjected to a heat curing process.
The curing process of the first liquid crystal layer 310 and the second liquid crystal layer 320 includes:
and step B2, performing heat curing treatment on the first liquid crystal layer 310 and the second liquid crystal layer 320.
The manufacturing method disclosed in the embodiment of the present application can improve the stability of the liquid crystal layer 300 by performing the heat curing treatment on the first liquid crystal layer 310 and the second liquid crystal layer 320.
Optionally, the first liquid crystal layer 310 is coated on the side of the alignment layer 200 facing away from the base layer 100, including:
in step C1, the first liquid crystal layer 310 is coated on the side of the alignment layer 200 facing away from the base layer 100 by one of spin coating, doctor blade coating, roller coating, and extrusion die doctor blade coating.
Coating a second liquid crystal layer 320 on a side of the first liquid crystal layer 310 facing away from the alignment layer 200, comprising:
in step C2, the second liquid crystal layer 320 is coated on the side of the first liquid crystal layer 310 facing away from the alignment layer 200 by one of spin coating, doctor blade coating, roller coating, and extrusion die doctor blade coating.
The foregoing embodiments of the present invention mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in view of brevity of line text, no further description is provided herein.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (10)
1. The optical film is characterized by comprising a base layer (100), an alignment layer (200) and a plurality of liquid crystal layers (300), wherein the alignment layer (200) is overlapped on the base layer (100), the plurality of liquid crystal layers (300) are sequentially overlapped on the alignment layer (200) along one side away from the base layer (100), and the alignment layer (200) is used for being matched with the plurality of liquid crystal layers (300) so that liquid crystals in each liquid crystal layer (300) are arranged according to a preset sequence.
2. The optical film of claim 1, wherein the plurality of liquid crystal layers (300) comprises at least one compensatory liquid crystal layer and one polarizing liquid crystal layer.
3. An optical film according to claim 1, characterized in that the plurality of liquid crystal layers (300) are provided to the alignment layer by means of UV curing.
4. An optical film according to claim 1, wherein the plurality of liquid crystal layers (300) are provided on the alignment layer by means of heat curing.
5. A method of manufacturing an optical film, characterized in that the optical film is the optical film according to any one of claims 1 to 4, and the plurality of liquid crystal layers (300) includes a first liquid crystal layer (310) and a second liquid crystal layer (320); the manufacturing method comprises the following steps:
coating the alignment layer (200) on the base layer (100);
coating the first liquid crystal layer (310) on a side of the alignment layer (200) facing away from the base layer (100);
-curing the first liquid crystal layer (310);
coating the second liquid crystal layer (320) on a side of the first liquid crystal layer (310) facing away from the alignment layer (200);
the first liquid crystal layer (310) and the second liquid crystal layer (320) are subjected to a curing treatment.
6. The manufacturing method according to claim 5, wherein the curing process of the first liquid crystal layer (310) includes:
performing a primary curing process on the first liquid crystal layer (310);
the curing process of the first liquid crystal layer (310) and the second liquid crystal layer (320) includes:
-subjecting the first liquid crystal layer (310) and the second liquid crystal layer (320) to a secondary curing treatment;
the liquid crystal curing degree of the primary curing treatment is smaller than that of the secondary curing treatment.
7. The manufacturing method according to claim 6, wherein the secondary curing process is a complete curing process for the liquid crystal.
8. The manufacturing method according to claim 5, wherein the curing process of the first liquid crystal layer (310) includes:
-UV curing the first liquid crystal layer (310);
the curing process of the first liquid crystal layer (310) and the second liquid crystal layer (320) includes:
-UV curing the first liquid crystal layer (310) and the second liquid crystal layer (320).
9. The manufacturing method according to claim 5, wherein the curing process of the first liquid crystal layer (310) includes:
-subjecting the first liquid crystal layer (310) to a heat curing treatment;
the curing process of the first liquid crystal layer (310) and the second liquid crystal layer (320) includes:
and performing heat curing treatment on the first liquid crystal layer (310) and the second liquid crystal layer (320).
10. The method according to claim 5, wherein,
-said coating of said first liquid crystal layer (310) on the side of said alignment layer (200) facing away from said base layer (100), comprising:
coating the first liquid crystal layer (310) on one side of the alignment layer (200) away from the base layer (100) by one of a spin coating method, a doctor blade coating method, a roller coating method and an extrusion die doctor blade coating method;
-said coating of said second liquid crystal layer (320) on the side of said first liquid crystal layer (310) facing away from said alignment layer (200), comprising:
the second liquid crystal layer (320) is coated on a side of the first liquid crystal layer (310) facing away from the alignment layer (200) by one of a spin coating method, a blade coating method, a roller coating method and an extrusion die blade coating method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310255213.8A CN116381988A (en) | 2023-03-16 | 2023-03-16 | Optical film and method for producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310255213.8A CN116381988A (en) | 2023-03-16 | 2023-03-16 | Optical film and method for producing same |
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| Publication Number | Publication Date |
|---|---|
| CN116381988A true CN116381988A (en) | 2023-07-04 |
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ID=86974169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202310255213.8A Withdrawn CN116381988A (en) | 2023-03-16 | 2023-03-16 | Optical film and method for producing same |
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| Country | Link |
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| CN (1) | CN116381988A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116931325A (en) * | 2023-07-26 | 2023-10-24 | 成都瑞波科材料科技有限公司 | Curved surface compensation film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5602661A (en) * | 1993-02-17 | 1997-02-11 | Hoffmann-La Roche Inc. | Optical component |
| CN101206328A (en) * | 2006-12-22 | 2008-06-25 | 台湾薄膜电晶体液晶显示器产业协会 | Optical film and manufacturing method thereof, and substrate structure and display panel using optical film |
| CN102262256A (en) * | 2010-05-27 | 2011-11-30 | 明基材料股份有限公司 | Patterned phase retardation film and manufacturing method thereof |
| CN110187581A (en) * | 2019-05-13 | 2019-08-30 | 安徽屹珹新材料科技有限公司 | A kind of colorful optical film and its preparation method and application structure |
| WO2022127771A1 (en) * | 2020-12-16 | 2022-06-23 | 北京瑞波科技术有限公司 | Phase retardance apparatus and preparation method therefor, and display device |
-
2023
- 2023-03-16 CN CN202310255213.8A patent/CN116381988A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5602661A (en) * | 1993-02-17 | 1997-02-11 | Hoffmann-La Roche Inc. | Optical component |
| DE59403063D1 (en) * | 1993-02-17 | 1997-07-17 | Hoffmann La Roche | Optical component |
| CN101206328A (en) * | 2006-12-22 | 2008-06-25 | 台湾薄膜电晶体液晶显示器产业协会 | Optical film and manufacturing method thereof, and substrate structure and display panel using optical film |
| CN102262256A (en) * | 2010-05-27 | 2011-11-30 | 明基材料股份有限公司 | Patterned phase retardation film and manufacturing method thereof |
| CN110187581A (en) * | 2019-05-13 | 2019-08-30 | 安徽屹珹新材料科技有限公司 | A kind of colorful optical film and its preparation method and application structure |
| WO2022127771A1 (en) * | 2020-12-16 | 2022-06-23 | 北京瑞波科技术有限公司 | Phase retardance apparatus and preparation method therefor, and display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116931325A (en) * | 2023-07-26 | 2023-10-24 | 成都瑞波科材料科技有限公司 | Curved surface compensation film and preparation method thereof |
| CN116931325B (en) * | 2023-07-26 | 2024-05-28 | 成都瑞波科材料科技有限公司 | Curved surface compensation film and preparation method thereof |
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Application publication date: 20230704 |