CN112433281A - Interference reduction type brightness enhancement film - Google Patents
Interference reduction type brightness enhancement film Download PDFInfo
- Publication number
- CN112433281A CN112433281A CN202011393406.2A CN202011393406A CN112433281A CN 112433281 A CN112433281 A CN 112433281A CN 202011393406 A CN202011393406 A CN 202011393406A CN 112433281 A CN112433281 A CN 112433281A
- Authority
- CN
- China
- Prior art keywords
- coating
- mass
- parts
- brightness enhancement
- enhancement 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model provides a subtract interference type brightness enhancement film, includes prism layer and optics base film, prism layer with optics base film between still have the back coating, wherein the back coating includes first coating and second coating, the refracting index of first coating is different with the refracting index of second coating, first coating and second coating all are the strip, first coating and second coating are alternately distributed. The first coating and the second coating with different refractive indexes are arranged as the back coating and are arranged between the prism layer and the optical base film, so that the purpose of reducing interference is achieved, and the prism film is simple in structure and convenient to produce.
Description
Technical Field
The invention relates to a brightness enhancement film.
Background
The main optical films of the liquid crystal backlight system comprise a diffusion film, a brightness enhancement film and a reflection film. The brightness enhancement film has the function of reconverging most of light rays passing through the diffusion sheet into the central viewing angle, so that the front-view brightness is remarkably improved, and the loss of scattered light rays with low exit angles is reduced.
The brightness enhancement film generally adopts an isosceles triangular strip-shaped microprism structure, the vertex angle of the prism is fixed and is generally 90 degrees with the best brightness. Such brightness enhancement films can interfere with use due to the ordered prismatic structure.
At present, the interference problem is improved by adopting a prism with fluctuation and fluctuation up and down, but the production process is complex due to the fact that the prism with fluctuation is manufactured, the prism is inconvenient to peel off from a copper rod, and then a series of production problems are generated.
Disclosure of Invention
In order to overcome the above-mentioned deficiencies of the prior art brightness enhancement films, the present invention provides a reduced interference brightness enhancement film that is simple to produce.
The technical scheme for solving the technical problem is as follows: the interference reduction type brightness enhancement film comprises a prism layer and an optical base film, wherein a back coating is arranged between the prism layer and the optical base film, the back coating comprises a first coating and a second coating, the refractive index of the first coating is different from that of the second coating, the first coating and the second coating are both strip-shaped, and the first coating and the second coating are alternately distributed;
the first coating layer includes:
70-80 parts by mass of a solvent,
methyl methacrylate, or n-butyl acrylate, or hydroxyethyl acrylate 3-15 parts by weight,
5-15 parts by mass of polyurethane,
0.2 to 1 part by mass of aziridine,
0.2 to 0.5 mass portion of flatting agent,
the second coating layer includes:
55-75 parts by mass of a solvent,
diacetone acrylamide or isobornyl acrylate 4-15 weight portions,
4-8 parts by mass of acrylic ester,
0.2 to 0.8 mass portion of polycarbodiimide,
0.2 to 0.5 mass portion of leveling agent.
Preferably, the solvent in the first coating layer and the solvent in the second coating layer are butanone, or toluene, or isopropanol.
Preferably, the leveling agent in the first coating layer and the leveling agent in the second coating layer are silicone oil, or polydimethylsiloxane, or urea-formaldehyde resin, or melamine-formaldehyde resin.
Preferably, the first coating layer and the second coating layer each correspond to one prism of the prism layer.
Preferably, the first coating layer and the second coating layer are equal in thickness and each have a thickness of 2-4 μm.
The invention has the beneficial effects that: the first coating and the second coating with different refractive indexes are arranged as the back coating and are arranged between the prism layer and the optical base film, so that the purpose of reducing interference is achieved, the structure is simple, and the production is convenient.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In a first embodiment, an interference reduction type brightness enhancement film comprises a prism layer 1 and an optical base film 2, the optical film 2 is generally made of PET, a back coating is further arranged between the prism layer 1 and the optical base film 2, the back coating comprises a first coating 3 and a second coating 4, the refractive index of the first coating 3 is different from that of the second coating 4, the first coating 3 and the second coating 4 are strip-shaped, the first coating 3 and the second coating 4 are alternately distributed, the first coating 3 and the second coating 4 correspond to a prism of the prism layer, the thicknesses of the first coating 3 and the second coating 4 are equal, and the thickness is controlled to be 2-4 μm.
The first coating layer 3 includes:
75 parts by mass of butanone serving as a solvent,
10 parts by mass of methyl methacrylate,
10 parts by mass of Polyurethane (PU),
0.5 part by mass of an aziridine,
0.3 part by mass of leveling agent silicone oil,
the second coating layer 4 includes:
60 parts by mass of butanone serving as a solvent,
10 parts by mass of diacetone acrylamide,
6 parts by mass of methyl acrylate
0.5 part by mass of polycarbodiimide,
0.3 part by mass of leveling agent silicone oil.
During production, the first coating and the second coating are coated on the optical base film, then the prism layer material is coated on the back coating according to the conventional production process, and then the prism shape is pressed.
In the second embodiment, an interference reduction type brightness enhancement film comprises a prism layer 1 and an optical base film 2, the optical film 2 is generally made of PET, a back coating is further arranged between the prism layer 1 and the optical base film 2, the back coating comprises a first coating 3 and a second coating 4, the refractive index of the first coating 3 is different from that of the second coating 4, the first coating 3 and the second coating 4 are strip-shaped, the first coating 3 and the second coating 4 are alternately distributed, the first coating 3 and the second coating 4 correspond to one prism of the prism layer, the thicknesses of the first coating 3 and the second coating 4 are equal, and the thickness is controlled to be 2-4 μm.
The first coating layer 3 includes:
80 parts by mass of toluene as a solvent,
5 parts by mass of n-butyl acrylate,
15 parts by mass of Polyurethane (PU),
1 part by mass of aziridine, and,
0.25 part by mass of leveling agent polydimethylsiloxane,
the second coating layer 4 includes:
70 parts by mass of toluene as a solvent,
14 parts by mass of isobornyl acrylate,
5 parts by mass of ethyl acrylate
0.8 part by mass of polycarbodiimide,
0.45 part by mass of leveling agent polydimethylsiloxane.
During production, the first coating and the second coating are coated on the optical base film, then the prism layer material is coated on the back coating according to the conventional production process, and then the prism shape is pressed.
In the third embodiment, an interference reduction type brightness enhancement film comprises a prism layer 1 and an optical base film 2, the optical film 2 is made of PET generally, a back coating is further arranged between the prism layer 1 and the optical base film 2, the back coating comprises a first coating 3 and a second coating 4, the refractive index of the first coating 3 is different from that of the second coating 4, the first coating 3 and the second coating 4 are strip-shaped, the first coating 3 and the second coating 4 are alternately distributed, the first coating 3 and the second coating 4 correspond to a prism of the prism layer, the thicknesses of the first coating 3 and the second coating 4 are equal, and the thickness is controlled to be 2-4 μm.
The first coating layer 3 includes:
70 parts by mass of isopropanol as a solvent,
15 parts by mass of hydroxyethyl acrylate,
6 parts by mass of polyurethane, namely,
0.3 part by mass of an aziridine,
0.4 part by mass of a leveling agent urea-formaldehyde resin,
the second coating layer 4 includes:
55 parts by mass of isopropanol as a solvent,
7 parts by mass of diacetone acrylamide,
8 parts by mass of 2-methyl methacrylate
0.3 part by mass of polycarbodiimide,
0.2 part of flatting agent urea-formaldehyde resin.
During production, the first coating and the second coating are coated on the optical base film, then the prism layer material is coated on the back coating according to the conventional production process, and then the prism shape is pressed.
In the fourth embodiment, an interference reduction type brightness enhancement film comprises a prism layer 1 and an optical base film 2, the optical film 2 is made of PET generally, a back coating is further arranged between the prism layer 1 and the optical base film 2, the back coating comprises a first coating 3 and a second coating 4, the refractive index of the first coating 3 is different from that of the second coating 4, the first coating 3 and the second coating 4 are strip-shaped, the first coating 3 and the second coating 4 are alternately distributed, the first coating 3 and the second coating 4 correspond to one prism of the prism layer, the thicknesses of the first coating 3 and the second coating 4 are equal, and the thickness is controlled to be 2-4 μm.
The first coating layer 3 includes:
77 parts by mass of butanone serving as a solvent,
3 parts by mass of methyl methacrylate,
5 parts by mass of polyurethane,
0.8 part by mass of aziridine,
0.5 part by mass of a leveling agent melamine formaldehyde resin,
the second coating layer 4 includes:
65 parts by mass of isopropyl alcohol as a solvent,
4 parts by mass of isobornyl acrylate,
4 parts by mass of 2-ethyl methacrylate
0.6 part by mass of polycarbodiimide,
0.5 part by mass of a leveling agent melamine formaldehyde resin.
During production, the first coating and the second coating are coated on the optical base film, then the prism layer material is coated on the back coating according to the conventional production process, and then the prism shape is pressed.
In the fifth embodiment, an interference reduction type brightness enhancement film comprises a prism layer 1 and an optical base film 2, the optical film 2 is made of PET generally, a back coating is further arranged between the prism layer 1 and the optical base film 2, the back coating comprises a first coating 3 and a second coating 4, the refractive index of the first coating 3 is different from that of the second coating 4, the first coating 3 and the second coating 4 are strip-shaped, the first coating 3 and the second coating 4 are alternately distributed, the first coating 3 and the second coating 4 correspond to one prism of the prism layer, the thicknesses of the first coating 3 and the second coating 4 are equal, and the thickness is controlled to be 2-4 μm.
The first coating layer 3 includes:
72 parts by mass of toluene as a solvent,
12 parts by mass of n-butyl acrylate,
13 parts by mass of Polyurethane (PU),
0.2 part by mass of an aziridine,
0.2 part by mass of leveling agent silicone oil,
the second coating layer 4 includes:
75 parts by mass of butanone serving as a solvent,
15 parts by mass of diacetone acrylamide,
methyl acrylate 7 parts by mass
0.2 part by mass of polycarbodiimide,
0.4 part by mass of leveling agent polydimethylsiloxane.
During production, the first coating and the second coating are coated on the optical base film, then the prism layer material is coated on the back coating according to the conventional production process, and then the prism shape is pressed.
Claims (6)
1. An interference reduction type brightness enhancement film, comprising a prism layer and an optical base film, characterized in that: a back coating is arranged between the prism layer and the optical base film, wherein the back coating comprises a first coating and a second coating, the refractive index of the first coating is different from that of the second coating, the first coating and the second coating are both strip-shaped, and the first coating and the second coating are alternately distributed;
the first coating layer includes:
70-80 parts by mass of a solvent,
methyl methacrylate, or n-butyl acrylate, or hydroxyethyl acrylate 3-15 parts by weight,
5-15 parts by mass of polyurethane,
0.2 to 1 part by mass of aziridine,
0.2 to 0.5 mass portion of flatting agent,
the second coating layer includes:
55-75 parts by mass of a solvent,
diacetone acrylamide or isobornyl acrylate 4-15 weight portions,
4-8 parts by mass of acrylic ester,
0.2 to 0.8 mass portion of polycarbodiimide,
0.2 to 0.5 mass portion of leveling agent.
2. The interference reduction type brightness enhancement film according to claim 1, wherein: the solvent in the first coating and the solvent in the second coating are butanone, toluene or isopropanol.
3. The interference reduction type brightness enhancement film according to claim 2, wherein: the leveling agent in the first coating and the leveling agent in the second coating are silicone oil, polydimethylsiloxane, urea resin or melamine formaldehyde resin.
4. The interference reduction type brightness enhancement film according to claim 3, wherein: the first coating and the second coating each correspond to one of the prisms of the prism layer.
5. The interference reduction type brightness enhancement film according to claim 4, wherein: the thicknesses of the first coating and the second coating are equal and are both 2-4 mu m.
6. The interference reduction type brightness enhancement film according to claim 5, wherein: the thicknesses of the first coating and the second coating are equal and are both 2-4 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011393406.2A CN112433281B (en) | 2020-12-03 | 2020-12-03 | Interference-reducing type brightness enhancement film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011393406.2A CN112433281B (en) | 2020-12-03 | 2020-12-03 | Interference-reducing type brightness enhancement film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112433281A true CN112433281A (en) | 2021-03-02 |
| CN112433281B CN112433281B (en) | 2023-03-14 |
Family
ID=74690706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011393406.2A Active CN112433281B (en) | 2020-12-03 | 2020-12-03 | Interference-reducing type brightness enhancement film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112433281B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10300908A (en) * | 1997-04-22 | 1998-11-13 | Dainippon Printing Co Ltd | Lens sheet, surface light source device, and transmission type display device |
| JP2005290090A (en) * | 2004-03-31 | 2005-10-20 | Nitto Denko Corp | Transparent hard coat film |
| JP2007249220A (en) * | 2007-03-30 | 2007-09-27 | Dainippon Printing Co Ltd | Prism sheet and its manufacturing method, surface light source device, and transmission type display body |
| CN101171532A (en) * | 2005-03-09 | 2008-04-30 | 3M创新有限公司 | Microreplicated article with moire reducing surface |
| US20100255425A1 (en) * | 2009-04-01 | 2010-10-07 | Coretronic Corporation | Fabrication method of brightness enhancement film |
| JP2013193285A (en) * | 2012-03-19 | 2013-09-30 | Mitsubishi Plastics Inc | Laminated polyester film |
| CN105094433A (en) * | 2015-08-12 | 2015-11-25 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN106226852A (en) * | 2015-09-23 | 2016-12-14 | 宁波激智科技股份有限公司 | One subtracts interferometric optical brightness enhancement film |
| JP2017132116A (en) * | 2016-01-27 | 2017-08-03 | 三菱ケミカル株式会社 | Laminated polyester film |
| CN109785763A (en) * | 2019-03-29 | 2019-05-21 | 上海天马微电子有限公司 | Display panel, preparation method thereof and display device |
| CN209911586U (en) * | 2019-07-17 | 2020-01-07 | 青岛卓英社科技股份有限公司 | Brightening composite film capable of optimizing interference effect |
-
2020
- 2020-12-03 CN CN202011393406.2A patent/CN112433281B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10300908A (en) * | 1997-04-22 | 1998-11-13 | Dainippon Printing Co Ltd | Lens sheet, surface light source device, and transmission type display device |
| JP2005290090A (en) * | 2004-03-31 | 2005-10-20 | Nitto Denko Corp | Transparent hard coat film |
| CN101171532A (en) * | 2005-03-09 | 2008-04-30 | 3M创新有限公司 | Microreplicated article with moire reducing surface |
| JP2007249220A (en) * | 2007-03-30 | 2007-09-27 | Dainippon Printing Co Ltd | Prism sheet and its manufacturing method, surface light source device, and transmission type display body |
| US20100255425A1 (en) * | 2009-04-01 | 2010-10-07 | Coretronic Corporation | Fabrication method of brightness enhancement film |
| JP2013193285A (en) * | 2012-03-19 | 2013-09-30 | Mitsubishi Plastics Inc | Laminated polyester film |
| CN105094433A (en) * | 2015-08-12 | 2015-11-25 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN106226852A (en) * | 2015-09-23 | 2016-12-14 | 宁波激智科技股份有限公司 | One subtracts interferometric optical brightness enhancement film |
| JP2017132116A (en) * | 2016-01-27 | 2017-08-03 | 三菱ケミカル株式会社 | Laminated polyester film |
| CN109785763A (en) * | 2019-03-29 | 2019-05-21 | 上海天马微电子有限公司 | Display panel, preparation method thereof and display device |
| CN209911586U (en) * | 2019-07-17 | 2020-01-07 | 青岛卓英社科技股份有限公司 | Brightening composite film capable of optimizing interference effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112433281B (en) | 2023-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101270266B (en) | Adhesive double coated tape | |
| CN206990843U (en) | A kind of diffusion for backlight module adds lustre to complex optical film | |
| WO2017088237A1 (en) | Backlight module and reflecting layer thereof | |
| CN103091899B (en) | Display device and backlight module thereof | |
| CN101819289A (en) | Compound optical film structure | |
| CN101191845A (en) | Optical plate | |
| EP2758831B1 (en) | Backlight device | |
| CN103047609A (en) | Reflecting film, backlight module provided with same and display device provided with same | |
| JP2021536093A (en) | Backlight module and display panel | |
| CN101435884A (en) | Diffusing plate and backlight module unit using the same | |
| CN205427225U (en) | Formula backlight unit is gone into to side of low -power consumption and liquid crystal display thereof | |
| CN101349397A (en) | Backlight system and microstructure reflector plate | |
| CN201218442Y (en) | Backlight module and LCD device containing the same | |
| CN205015500U (en) | Display device | |
| CN112433281B (en) | Interference-reducing type brightness enhancement film | |
| CN205427227U (en) | Ultra -thin compound light guide plate | |
| JP3753785B2 (en) | Light diffusion film and surface light source device using the same | |
| CN207067600U (en) | Reflector plate, backlight module and display device | |
| CN208459732U (en) | A kind of backlight module and liquid crystal display of efficient blast | |
| TWI275845B (en) | Light guide plate and backlight system using the same | |
| CN213750382U (en) | Interference reduction type brightness enhancement film | |
| US10488707B2 (en) | Diffusion element and manufacturing method thereof, backlight module and display device | |
| CN101661124A (en) | Direct type backlight module and diffusion plate thereof | |
| CN112339356A (en) | Diffuse reflection film | |
| CN102661572A (en) | Light guide plate with upper prisms and backlight module corresponding to light guide plate |
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 |