CN112549594B - Preparation method of optical composite film with diffusion and reflection functions - Google Patents
Preparation method of optical composite film with diffusion and reflection functions Download PDFInfo
- Publication number
- CN112549594B CN112549594B CN202011393394.3A CN202011393394A CN112549594B CN 112549594 B CN112549594 B CN 112549594B CN 202011393394 A CN202011393394 A CN 202011393394A CN 112549594 B CN112549594 B CN 112549594B
- Authority
- CN
- China
- Prior art keywords
- mass
- solution
- diffusion
- optical
- composite film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
-
- 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
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0284—Diffusing elements; Afocal elements characterized by the use used in reflection
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/12—Reflex reflectors
- G02B5/126—Reflex reflectors including curved refracting surface
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
Abstract
A preparation method of an optical composite film with diffusion and reflection functions comprises the following steps: A. reacting the fiber, a sulfuric acid solution, ammonia water and a titanium salt solution to obtain cellulose/titanium dioxide core-shell spherical diffusion particles; B. melting high-density polyethylene and incompatible resin at a mass ratio of 3:0.5-1.5g/ml on a roller mill at 180 ℃ of 150-; C. and B, melting and mixing the cellulose/titanium dioxide core-shell spherical diffusion particles obtained in the step A, acrylic resin and maleic anhydride to obtain a molten mixed solution, coating the molten mixed solution on the coating surface of the optical base film, and drying to obtain the composite film. The optical film prepared by the invention has both reflection and diffusion properties, and the optical property of the reflection film is improved.
Description
Technical Field
The invention relates to a preparation method of an optical film.
Background
With the rapid development of science and technology, a liquid crystal display with thin thickness, light weight, less energy consumption and low working voltage is widely applied, the liquid crystal display is used as a passive display device, the liquid crystal display cannot emit light, the display effect benefits from modulating the light emitted by a backlight source, and the performance index of the display depends on the performance of the backlight source, so the quality of the liquid crystal display is directly influenced by the light source performance of the backlight module. The reflective film is one of the most important optical films in the backlight module of the liquid crystal display, and in the liquid crystal display, the reflective film is arranged at the bottom of the backlight module of the light guide plate and reflects light leaked from the light source back to the light guide plate, so that the light can be intensively projected from the front side, and the light is prevented from leaking, thereby achieving the purpose of increasing the use efficiency of the light. At present, the raw materials of the base film of the reflecting film mainly comprise polyethylene terephthalate (PET), polypropylene (PP), Polycarbonate (PC) and the like, inorganic particles with high refractive index such as TiO2, SiO2 and the like are added into the base film, the reflecting film with a micropore structure in the middle layer is prepared through melt extrusion and biaxial stretching, the reflectivity is improved by utilizing the difference of the refractive index of base resin and microbubbles of the film, and the reflectivity of the film can be effectively improved by the method. However, the microporous structure in the conventional reflective film is limited to improve the brightness of the backlight module, and the problems that the light distribution in the backlight module is not uniform, and an obvious shadow can be observed exist. How to improve the optical performance of the reflective film and enable the backlight to be uniformly transmitted to the whole screen, and the obtained picture details are finer and more vivid becomes an important subject to be solved urgently in the field of optical films.
Disclosure of Invention
In order to overcome the defects of the existing optical film, the invention provides a preparation method of an optical composite film with the functions of diffusion and reflection.
The technical scheme for solving the technical problem is as follows: a preparation method of an optical composite film with diffusion and reflection functions comprises the following steps:
A. ultrasonically mixing the fiber and a sulfuric acid solution according to the mass volume ratio of 1:50-100g/ml to obtain a solution A, reacting for 3-6h at the temperature of 60-100 ℃, then adding ammonia water and a titanium salt solution into the solution A to continue reacting for 4-8h, centrifugally washing the solution A with ethanol after the reaction is finished, and drying the solution in an oven at the temperature of 60-80 ℃ to obtain cellulose/titanium dioxide core-shell spherical diffusion particles;
B. melting the high-density polyethylene and the incompatible resin on a roller mill at the temperature of 150-180 ℃ in a mass ratio of 3:0.5-1.5g/ml, adding inorganic particles for blending, wherein the mass ratio of the total mass of the high-density polyethylene and the incompatible resin to the mass of the inorganic particles is 95:2-6, and pressing to obtain the optical base film;
C. ultrasonically mixing the cellulose/titanium dioxide core-shell spherical diffusion particles obtained in the step A with acrylic resin according to the mass-volume ratio of 1:8-10g/ml to obtain a mixed solution, melting and mixing maleic anhydride and the mixed solution according to the mass-volume ratio of 1.2-1.5:1g/ml at the temperature of 60-90 ℃ to obtain a molten mixed solution, spraying a hydrogen peroxide solution on the coating surface of the optical base film obtained in the step B, coating the molten mixed solution on the coating surface of the optical base film, and finally placing the optical base film in an oven at the temperature of 50-80 ℃ to dry for 2-5 hours to obtain the composite film.
Preferably, in the step a, the fiber is mechanically pulverized polyester staple fiber, the sulfuric acid solution is 40% by mass, and the titanium salt is tetraisopropanone titanate, titanium tetrachloride or titanium tetrabromide.
Preferably, in the step A, the length of the mechanically crushed polyester staple fiber is 1-3mm, and the mass percentage of the titanium salt is 40-75%.
Preferably, in step B, the incompatible resin is polymethacrylic resin or polystyrene; the inorganic particles are titanium dioxide or silicon dioxide.
Preferably, in step C, the aqueous hydrogen peroxide solution is 30% by mass.
The invention has the beneficial effects that: 1. the invention uses the cellulose/titanium dioxide core-shell spherical diffusion particles, and utilizes the gradient refractive index formed by embedding the core-shell spherical diffusion particles into the coating resin to generate the multiple light scattering effect, thereby achieving the wide light diffusion area and being beneficial to the photoelectric device having the characteristics of wide visual angle and high definition.
2. The invention adopts cellulose with wide source and excellent optical performance as the nuclear layer of the diffusion particles, not only reduces the production cost, but also compares with the common TiO2Particles, core-shell spherical SNC/TiO obtained by the invention2The particles have excellent mechanical properties and optical properties.
3. The invention adopts inorganic particles and two polymers with refractive index difference to prepare the reflection base film, and increases the mechanical property of the reflection film, such as the stiffness of the reflection film.
4. The optical composite film prepared by the invention has the advantages of simple preparation method, diversified functions, integration of diffusion and reflection performances, fewer assemblies and capability of meeting the development trend of thinning and low light weight of a liquid crystal display.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
In a first embodiment, a method for preparing an optical composite film with both diffusion and reflection functions includes the following steps:
A. ultrasonically mixing the fiber and a 40% sulfuric acid solution according to the mass-volume ratio of 1:80g/ml to obtain a solution A, reacting for 5 hours at 90 ℃, then adding ammonia water and a 60% tetraisopropyl titanate solution into the solution A to continue reacting for 5 hours, centrifugally washing with ethanol after the reaction is finished, and drying in a 70 ℃ oven to obtain the cellulose/titanium dioxide core-shell spherical diffusion particles. Wherein, the length of the mechanically crushed polyester staple fiber is controlled between 1 mm and 3 mm.
B. Melting high-density polyethylene and polymethacrylic resin on a roller mill at 170 ℃ in a mass ratio of 3:1g/ml, adding titanium dioxide particles for blending, wherein the mass ratio of the total mass of the high-density polyethylene and the polymethacrylic resin to the mass of the titanium dioxide particles is 95:4, and pressing to obtain the optical base film.
C. Ultrasonically mixing the cellulose/titanium dioxide core-shell spherical diffusion particles obtained in the step A with acrylic resin according to the mass-volume ratio of 1:9g/ml to obtain a mixed solution, melting and mixing maleic anhydride and the mixed solution according to the mass-volume ratio of 1.4:1g/ml at 80 ℃ to obtain a molten mixed solution, spraying a hydrogen peroxide solution on the coating surface of the optical base film obtained in the step B, wherein the mass percentage content of the hydrogen peroxide solution is 30%, then coating the molten mixed solution on the coating surface of the optical base film, finally placing the optical base film in an oven at the temperature of 60 ℃, and drying for 3 hours to obtain the composite film.
In a second embodiment, a method for preparing an optical composite film with both diffusion and reflection functions includes the following steps:
A. ultrasonically mixing fibers with a 40% sulfuric acid solution according to a mass-volume ratio of 1:50g/ml to obtain a solution A, reacting for 6 hours at 80 ℃, then adding ammonia water into the solution A to continuously react with a 70% titanium tetrachloride solution for 4 hours, centrifugally washing with ethanol after the reaction is finished, and drying in a 75 ℃ oven to obtain the cellulose/titanium dioxide core-shell spherical diffusion particles. Wherein, the length of the mechanically crushed polyester staple fiber is controlled between 1 mm and 3 mm.
B. Melting high-density polyethylene and polystyrene on a roller mill at 180 ℃ in a mass ratio of 3:1.2g/ml, adding silica particles for blending, wherein the mass ratio of the total mass of the high-density polyethylene and the polystyrene to the mass of the silica particles is 95:4.5, and pressing to obtain the optical base film.
C. Ultrasonically mixing the cellulose/titanium dioxide core-shell spherical diffusion particles obtained in the step A with acrylic resin according to the mass-volume ratio of 1:8.5g/ml to obtain a mixed solution, melting and mixing maleic anhydride and the mixed solution according to the mass-volume ratio of 1.25:1g/ml at 90 ℃ to obtain a molten mixed solution, spraying a hydrogen peroxide solution on the coating surface of the optical base film obtained in the step B, wherein the mass percentage content of the hydrogen peroxide solution is 30%, then coating the molten mixed solution on the coating surface of the optical base film, finally placing the optical base film in an oven at the temperature of 75 ℃, and drying for 2 hours to obtain the composite film.
In a third embodiment, a method for preparing an optical composite film with both diffusion and reflection functions includes the following steps:
A. ultrasonically mixing the fiber and a 40% sulfuric acid solution according to the mass volume ratio of 1:100g/ml to obtain a solution A, reacting for 4.5 hours at the temperature of 60 ℃, then adding ammonia water into the solution A to continue reacting with a 50% titanium tetrabromide solution for 8 hours, centrifugally washing the solution with ethanol after the reaction is finished, and drying the solution in a 65 ℃ oven to obtain the cellulose/titanium dioxide core-shell spherical diffusion particles. Wherein, the length of the mechanically crushed polyester staple fiber is controlled between 1 mm and 3 mm.
B. Melting high-density polyethylene and polymethacrylic resin on a roller mill at 160 ℃ in a mass ratio of 3:0.5g/ml, adding titanium dioxide particles for blending, wherein the mass ratio of the total mass of the high-density polyethylene and the polymethacrylic resin to the mass of the titanium dioxide particles is 95:3, and pressing to obtain the optical base film.
C. Ultrasonically mixing the cellulose/titanium dioxide core-shell spherical diffusion particles obtained in the step A with acrylic resin according to the mass-volume ratio of 1:10g/ml to obtain a mixed solution, melting and mixing maleic anhydride and the mixed solution according to the mass-volume ratio of 1.2:1g/ml at 60 ℃ to obtain a molten mixed solution, spraying a hydrogen peroxide solution on the coating surface of the optical base film obtained in the step B, wherein the mass percentage content of the hydrogen peroxide solution is 30%, then coating the molten mixed solution on the coating surface of the optical base film, finally placing the optical base film in an oven at the temperature of 70 ℃, and drying for 4.5 hours to obtain the composite film.
In a fourth embodiment, a method for preparing an optical composite film with both diffusion and reflection functions includes the following steps:
A. ultrasonically mixing the fiber and a 40% sulfuric acid solution according to the mass-volume ratio of 1:60g/ml to obtain a solution A, reacting for 4 hours at 100 ℃, then adding ammonia water into the solution A to continuously react with 40% tetraisopropyl titanate solution for 6.5 hours, centrifugally washing with ethanol after the reaction is finished, and drying in an oven at 80 ℃ to obtain the cellulose/titanium dioxide core-shell spherical diffusion particles. Wherein, the length of the mechanically crushed polyester staple fiber is controlled between 1 mm and 3 mm.
B. Melting high-density polyethylene and polystyrene on a roller mill at 150 ℃ in a mass ratio of 3:1.5g/ml, adding silica particles for blending, wherein the mass ratio of the total mass of the high-density polyethylene and the polystyrene to the mass of the silica particles is 95:6, and pressing to obtain the optical base film.
C. Ultrasonically mixing the cellulose/titanium dioxide core-shell spherical diffusion particles obtained in the step A with acrylic resin according to the mass-volume ratio of 1:8g/ml to obtain a mixed solution, melting and mixing maleic anhydride and the mixed solution according to the mass-volume ratio of 1.3:1g/ml at 85 ℃ to obtain a molten mixed solution, spraying a hydrogen peroxide solution on the coating surface of the optical base film obtained in the step B, wherein the mass percentage content of the hydrogen peroxide solution is 30%, then coating the molten mixed solution on the coating surface of the optical base film, finally placing the optical base film in an oven at the temperature of 50 ℃, and drying for 4 hours to obtain the composite film.
In a fifth embodiment, a method for preparing an optical composite film with both diffusion and reflection functions includes the following steps:
A. ultrasonically mixing fibers with a 40% sulfuric acid solution according to a mass-volume ratio of 1:90g/ml to obtain a solution A, reacting for 3 hours at 85 ℃, then adding ammonia water into the solution A to continuously react with a 75% titanium tetrachloride solution for 5 hours, centrifugally washing with ethanol after the reaction is finished, and drying in a 60 ℃ oven to obtain the cellulose/titanium dioxide core-shell spherical diffusion particles. Wherein, the length of the mechanically crushed polyester staple fiber is controlled between 1 mm and 3 mm.
B. Melting high-density polyethylene and polymethacrylic resin on a roller mill at 155 ℃ in a mass ratio of 3:0.7g/ml, adding titanium dioxide particles for blending, wherein the mass ratio of the total mass of the high-density polyethylene and the polymethacrylic resin to the mass of the titanium dioxide particles is 95:2, and pressing to obtain the optical base film.
C. Ultrasonically mixing the cellulose/titanium dioxide core-shell spherical diffusion particles obtained in the step A with acrylic resin according to the mass-volume ratio of 1:9.5g/ml to obtain a mixed solution, melting and mixing maleic anhydride and the mixed solution according to the mass-volume ratio of 1.45:1g/ml at 65 ℃ to obtain a molten mixed solution, spraying a hydrogen peroxide solution on the coating surface of the optical base film obtained in the step B, wherein the mass percentage content of the hydrogen peroxide solution is 30%, then coating the molten mixed solution on the coating surface of the optical base film, finally placing the optical base film in an oven at the temperature of 80 ℃, and drying for 2.5 hours to obtain the composite film.
In a sixth embodiment, a method for preparing an optical composite film with both diffusion and reflection functions includes the following steps:
A. ultrasonically mixing the fiber and a 40% sulfuric acid solution according to the mass-volume ratio of 1:70g/ml to obtain a solution A, reacting for 5.5 hours at 70 ℃, then adding ammonia water into the solution A to continue reacting for 7 hours with a 55% titanium tetrabromide solution, centrifugally washing the solution with ethanol after the reaction is finished, and drying the solution in a 78 ℃ oven to obtain the cellulose/titanium dioxide core-shell spherical diffusion particles. Wherein, the length of the mechanically crushed polyester staple fiber is controlled between 1 mm and 3 mm.
B. Melting high-density polyethylene and polystyrene on a roller mill at 165 ℃ in a mass ratio of 3:0.8g/ml, adding silica particles for blending, wherein the mass ratio of the total mass of the high-density polyethylene and the polystyrene to the mass of the silica particles is 95:5, and pressing to obtain the optical base film.
C. Ultrasonically mixing the cellulose/titanium dioxide core-shell spherical diffusion particles obtained in the step A with acrylic resin according to the mass-volume ratio of 1:8.2g/ml to obtain a mixed solution, melting and mixing maleic anhydride with the mixed solution according to the mass-volume ratio of 1.5:1g/ml at 70 ℃ to obtain a molten mixed solution, spraying a hydrogen peroxide aqueous solution on the coating surface of the optical base film obtained in the step B, wherein the mass percentage of the hydrogen peroxide aqueous solution is 30%, coating the molten mixed solution on the coating surface of the optical base film, finally placing the optical base film in an oven at the temperature of 65 ℃, and drying for 5 hours to obtain the composite film.
Claims (5)
1. A preparation method of an optical composite film with diffusion and reflection functions is characterized by comprising the following steps:
A. ultrasonically mixing the fiber and a sulfuric acid solution according to the mass volume ratio of 1:50-100g/ml to obtain a solution A, reacting for 3-6h at the temperature of 60-100 ℃, then adding ammonia water and a titanium salt solution into the solution A to continue reacting for 4-8h, centrifugally washing the solution A with ethanol after the reaction is finished, and drying the solution in an oven at the temperature of 60-80 ℃ to obtain cellulose/titanium dioxide core-shell spherical diffusion particles;
B. melting the high-density polyethylene and the incompatible resin on a roller mill at the temperature of 150-180 ℃ in a mass ratio of 3:0.5-1.5g/ml, adding inorganic particles for blending, wherein the mass ratio of the total mass of the high-density polyethylene and the incompatible resin to the mass of the inorganic particles is 95:2-6, and pressing to obtain the optical base film;
C. ultrasonically mixing the cellulose/titanium dioxide core-shell spherical diffusion particles obtained in the step A with acrylic resin according to the mass-volume ratio of 1:8-10g/ml to obtain a mixed solution, melting and mixing maleic anhydride and the mixed solution according to the mass-volume ratio of 1.2-1.5:1g/ml at the temperature of 60-90 ℃ to obtain a molten mixed solution, spraying a hydrogen peroxide solution on the coating surface of the optical base film obtained in the step B, coating the molten mixed solution on the coating surface of the optical base film, and finally placing the optical base film in an oven at the temperature of 50-80 ℃ to dry for 2-5 hours to obtain the composite film.
2. A method for preparing an optical composite film having both diffusion and reflection functions as claimed in claim 1, wherein: in the step A, the fiber is mechanically crushed polyester staple fiber, the sulfuric acid solution is 40% by mass, and the titanium salt is tetraisopropanone titanate, titanium tetrachloride or titanium tetrabromide.
3. A method for preparing an optical composite film having both diffusion and reflection functions as claimed in claim 2, wherein: in the step A, the length of the mechanically crushed polyester staple fiber is 1-3mm, and the mass percentage of the titanium salt is 40-75%.
4. A method for preparing an optical composite film having both diffusion and reflection functions as claimed in claim 3, wherein: in the step B, the incompatible resin is polymethacrylic acid resin or polystyrene; the inorganic particles are titanium dioxide or silicon dioxide.
5. A method for preparing an optical composite film having both diffusion and reflection functions as claimed in claim 4, wherein: in the step C, the mass percentage of the aqueous hydrogen peroxide solution is 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011393394.3A CN112549594B (en) | 2020-12-03 | 2020-12-03 | Preparation method of optical composite film with diffusion and reflection functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011393394.3A CN112549594B (en) | 2020-12-03 | 2020-12-03 | Preparation method of optical composite film with diffusion and reflection functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112549594A CN112549594A (en) | 2021-03-26 |
| CN112549594B true CN112549594B (en) | 2022-05-10 |
Family
ID=75047222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011393394.3A Active CN112549594B (en) | 2020-12-03 | 2020-12-03 | Preparation method of optical composite film with diffusion and reflection functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112549594B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003030883A1 (en) * | 2001-10-12 | 2003-04-17 | Kosmos Pharma | Uniform films for rapid dissolve dosage form incorporating taste-masking compositions |
| CN1200881C (en) * | 2002-08-19 | 2005-05-11 | 西安华创纳米化合物技术研究发展有限责任公司 | Preparation method of titanium oxide nano fibre |
| KR101105260B1 (en) * | 2010-04-20 | 2012-01-17 | 타이완 나노테크놀로지 코포레이션 | Light guiding plate |
| CN108440794A (en) * | 2018-03-12 | 2018-08-24 | 华侨大学 | A kind of preparation method of chitosan nano fiber element nanometer titanium dioxide composite membrane |
| RU2736184C1 (en) * | 2019-06-04 | 2020-11-12 | федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный медицинский университет" Министерства здравоохранения Российской Федерации | Pharmaceutical composition having antiulcer activity, and method for production thereof |
| CN110980634B (en) * | 2019-11-29 | 2021-03-02 | 京东方科技集团股份有限公司 | Nanoparticle patterning method, display screen and display device |
-
2020
- 2020-12-03 CN CN202011393394.3A patent/CN112549594B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112549594A (en) | 2021-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106292124B (en) | Display panel and display device | |
| JP3184219B2 (en) | Light scattering light guide, manufacturing method thereof and applied optical device | |
| JP4647383B2 (en) | Brightness enhancing film for liquid crystal display device and method for producing the same | |
| CN101573643B (en) | Polarizing element and liquid crystal display device | |
| CN101126821B (en) | Optical board and the backlight module group using same | |
| CN103364992B (en) | Reflection polarization brightness enhancement film and manufacturing method thereof | |
| CN102295833B (en) | Nano optical composite material, and preparation method and application thereof | |
| CN1839279A (en) | Surface light source device | |
| CN1126520A (en) | Direct view display device with array of tapered waveguide | |
| KR20080096642A (en) | Light redirecting films having an adhesion layer | |
| CN101435884A (en) | Diffusing plate and backlight module unit using the same | |
| CN112549594B (en) | Preparation method of optical composite film with diffusion and reflection functions | |
| CN109796732A (en) | A kind of high transparency haze polyester diffusion masterbatch and preparation method thereof | |
| KR0170359B1 (en) | Light-scattering light guide and its manufacture and applied optics apparatus thereof | |
| CN107942573B (en) | Liquid crystal display device with a light guide plate | |
| CN114114499A (en) | Polarization-maintaining optical film, polarization-maintaining diffusion film and double-sided fog polarization-maintaining diffusion film | |
| CN209433056U (en) | A kind of quantum dot composite light guide plate and backlight module | |
| CN208737151U (en) | Backlight module and liquid crystal display device | |
| CN114002849B (en) | Diffraction light waveguide display device | |
| CN110426892A (en) | A kind of backlight module and display device | |
| JPH1152377A (en) | Optical path control platte, surface light source device, polarizing light source device and liquid crystal display device | |
| JPH11109328A (en) | Liquid crystal device and its production | |
| CN202362470U (en) | Brightness enhancement film with composite structure | |
| JP3808598B2 (en) | Surface light source device, polarized light source device, and liquid crystal display device | |
| JPH11212091A (en) | Optical path control plate, surface light source device, polarized light source device, and liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |