CN206990843U - A kind of diffusion for backlight module adds lustre to complex optical film - Google Patents
A kind of diffusion for backlight module adds lustre to complex optical film Download PDFInfo
- Publication number
- CN206990843U CN206990843U CN201720838326.0U CN201720838326U CN206990843U CN 206990843 U CN206990843 U CN 206990843U CN 201720838326 U CN201720838326 U CN 201720838326U CN 206990843 U CN206990843 U CN 206990843U
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- prism
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- diffusion
- optical film
- backlight module
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 71
- 239000012788 optical film Substances 0.000 title claims abstract description 29
- VQLYBLABXAHUDN-UHFFFAOYSA-N bis(4-fluorophenyl)-methyl-(1,2,4-triazol-1-ylmethyl)silane;methyl n-(1h-benzimidazol-2-yl)carbamate Chemical compound C1=CC=C2NC(NC(=O)OC)=NC2=C1.C=1C=C(F)C=CC=1[Si](C=1C=CC(F)=CC=1)(C)CN1C=NC=N1 VQLYBLABXAHUDN-UHFFFAOYSA-N 0.000 title abstract 5
- 239000010408 film Substances 0.000 claims abstract description 71
- 239000002131 composite material Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000010030 laminating Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000005282 brightening Methods 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 4
- 239000011295 pitch Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 abstract description 6
- 239000012528 membrane Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013178 mathematical model Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011325 microbead Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000012826 global research Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
A kind of diffusion for backlight module adds lustre to complex optical film, including diffusion barrier, prism film and laminating layer；Diffusion barrier is made up of the first PET base material and light diffusion layer；Prism film is made up of multiple prism structures being arranged in parallel within the second PET base material；The prism structure of prism film comprises at least three kinds or more spacing and highly different prism striped.Diffusion barrier and prism film are combined into an entirety by the application by laminating layer, are formed a diffusion with absolute construction and are added lustre to complex optical film, its thickness is the 1/3 of traditional diaphragm, meets the product ultrathin market demand, is significantly less than traditional diaphragm thickness.In addition, the composite membrane of the application employs the design of diffusion barrier, lower prism film, prism film adds lustre to, diffusion barrier makes uniform light, greatly strengthen and spreads add lustre to the optics briliancy of complex optical film and the uniformity of light.
Description
Technical Field
The utility model relates to an optics diaphragm that can be arranged in LCD backlight unit especially relates to a diffusion adds compound blooming for backlight unit.
Background
Liquid crystal display is one of the fastest technical fields in the world development, and with the rapid development of liquid crystal televisions, notebook computers, liquid crystal mobile phones, tablet computers and the like, the ultra-thinning of the liquid crystal display becomes a hot spot of global research. The backlight module is an important part of the liquid crystal industry chain, and accounts for more than 20% of the cost of the liquid crystal screen, and the traditional backlight module is mainly formed by assembling four membranes of a lower diffusion film, a lower prism film, an upper prism film and an upper diffusion film, needs to be assembled piece by piece, and has the defects of long production time consumption, low assembly efficiency, high reject ratio and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the present invention is to provide a diffusion-enhanced composite optical film for a backlight module to reduce or avoid the aforementioned problems.
In order to solve the technical problem, the utility model provides a diffusion-enhanced composite optical film for a backlight module, which comprises a diffusion film, a prism film and an adhesive layer which is uniformly coated between the diffusion film and the prism film and is made of solvent-free UV adhesive for laminating and bonding the diffusion film and the prism film into a whole; the diffusion film is composed of a first PET base material and a light diffusion layer coated on the first PET base material, the light diffusion layer is formed by uniformly mixing diffusion particles and a resin material, and the diameters of the diffusion particles are between 3 and 8 micrometers; the thickness of the first PET base material is between 90 and 180 mu m, and the thickness of the light diffusion layer is between 5 and 10 mu m; the prism film consists of a plurality of prism structures which are arranged on the second PET base material in parallel; the prism structure comprises a plurality of prism stripes, the interval of the prism stripes is between 43 and 83 μm, and the height of the prism stripes is between 20 and 32 μm; at least three or more prism stripes with different intervals and heights are included.
Preferably, the prism structure of the prism film has an adhesion force of Ba, and the adhesion force of the adhesive layer is Bb, where Bb ≧ Ba.
Preferably, the thickness of the diffusion-enhanced composite optical film is 290-320 μm.
Preferably, the first PET substrate of the diffusion film is bonded to the prism structure of the prism film through the bonding layer, and one side of the second PET substrate of the prism film is uniformly bonded with a plurality of transparent beads through a bonding layer.
This application passes through the laminating with diffusion barrier and prism membrane and compounds into a whole, forms a diffusion that has independent structure and increases light composite optical film, and its thickness is 1/3 of traditional diaphragm, satisfies the product and surpasses thinization market demand, is less than traditional diaphragm thickness greatly, and optical property is good, packaging efficiency improves 100%, and cost reduction 15%. In addition, the composite film adopts the design of the upper diffusion film and the lower prism film, the prism film brightens and the diffusion film makes light uniform, the optical brightness and the light uniformity of the diffusion and brightness enhancement composite optical film are greatly enhanced, and better brightness enhancement and diffusion effects can be obtained.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
fig. 1 is a schematic structural diagram of a diffusion-enhanced composite optical film for a backlight module according to an embodiment of the present invention;
FIG. 2 is an exploded perspective view of the diffusion augmented composite optical film of FIG. 1.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
As described in the background section, the conventional backlight module is assembled from a plurality of films, and different films are easy to scratch the surface during transportation, and scratches are also formed due to operation during mutual assembly, so that the defects of long production time consumption, low assembly efficiency, high reject ratio and the like exist in the one-by-one assembly. In view of the above problems in the prior art, the present application provides a diffusion light-increasing composite optical film for a backlight module, which compounds two films into a whole through a solvent-free UV adhesive to form a diffusion light-increasing composite optical film having an independent structure, and the specific structure is shown in fig. 1-2, which respectively show a schematic structural diagram and an exploded perspective view of the diffusion light-increasing composite optical film for a backlight module according to an embodiment of the present invention.
Referring to fig. 1-2, the diffusion-enhanced composite optical film of the present application, generally designated by reference numeral 1, includes a diffusion film 100, a prism film 200, and a lamination layer 300 made of a solvent-free UV adhesive uniformly applied between the diffusion film 100 and the prism film 200 to laminate and bond the two together.
Specifically, as shown in the figure, the diffusion film 100 is composed of a first PET substrate 11 and a light diffusion layer 12 coated on the first PET substrate 11, wherein the light diffusion layer 12 may be formed by uniformly mixing diffusion particles, such as PMMA (polymethyl methacrylate) microbeads or PBMA (poly n-butyl methacrylate) microbeads, and a resin material, such as a hydroxyl acrylic resin. In addition, the diameter of the diffusion particles in the light diffusion layer 12 is preferably between 3 and 8 μm, the thickness of the first PET base material 11 is preferably between 90 and 180 μm, and the thickness of the light diffusion layer 12 is preferably between 5 and 10 μm.
The prism film 200 is composed of a plurality of prism structures 22 arranged in parallel on a second PET substrate 21, the prism structures 22 include a plurality of prism stripes, as shown in the figure, the interval of the prism stripes is between 43-83 μm, and the height is between 20-32 μm; the thickness of the finally formed diffusion and brightening composite optical film is 290-320 mu m, and the thickness of the diffusion and brightening composite optical film is 310 mu m most preferably.
This application forms a diffusion light-intensifying composite optical film who has independent structure through compounding two diaphragms into a whole through solvent-free UV adhesive, and its thickness is 1/3 of traditional diaphragm, satisfies the product and surpasses thinization market demand, is less than traditional diaphragm thickness (>2000 mu m) greatly, and optical property is good, packaging efficiency improves 100%, and cost reduction 15%. In addition, the composite film adopts the design of the upper diffusion film and the lower prism film, the prism film brightens and the diffusion film makes light uniform, the optical brightness and the light uniformity of the diffusion and brightness enhancement composite optical film are greatly enhanced, and better brightness enhancement and diffusion effects can be obtained.
Further, as shown in the figure, the first PET substrate 11 of the diffusion film 100 is bonded to the prism structure 22 of the prism film 200 through the adhesive layer 300, and one side of the second PET substrate 21 of the prism film 200 is uniformly bonded with a plurality of transparent beads 500 through an adhesive layer 400. The transparent beads 500 integrally bonded to the lower prism film 200 can be used to adjust the haze of the composite film and prevent light absorption of a light guide plate (not shown) in contact with the lower prism film 200.
In addition, in one embodiment, the prism Film 200 may be a Brightness Enhancement Film (BEF) having a structure for eliminating moire fringes, that is, the prism structures 22 on the prism Film 200 may include at least three or more prism fringes with different pitches and heights, so as to disturb the regular arrangement of the prism fringes, eliminate the regular Brightness variation caused by the regular arrangement of the prism fringes, and reduce or eliminate moire fringes generated between the prism sheet and the LCD panel. Meanwhile, the irregular arrangement and combination of the prism stripes obviously improve the uniformity of the brightness of the reflected light of the prisms, improve the utilization rate of the illumination light and further improve the brightness of the LCD.
Furthermore, in order to overcome the defect that the prior art cannot accurately suppress the moire fringes, the present application further provides a mathematical model which can be directly adopted by those skilled in the art, and those skilled in the art can accurately reduce the moire fringes according to the following mathematical model. That is, as shown in the illustrated embodiment, the prism fringes on the prism film 200 have a pitch of 43-83 μm and a height of 20-32 μm. In another mathematical model, the prism structure 22 of the prism film 200 includes three first, second, and third prism stripes 221, 222, 223 having heights a, b, c, respectively, which satisfy the following relationships: a ≦ 32 μm; a ≧ 1.3 b; b ≧ 1.2 c. In addition, the numbers of the first prism stripes 221, the second prism stripes 222, and the third prism stripes 223 on the second PET base material 21 of the prism film 200 are Na, Nb, and Nc, respectively, and satisfy the following relationship: na ≧ Nb; nb ≧ Nc.
Further, in order to minimize the thermal deformation of the diffusion and light-intensifying composite optical film 1, improve the optical brightness, and improve the production efficiency and quality, in a specific embodiment, the thermal expansion coefficient of the second PET base material 21 of the prism film 200 is Tp, the thermal expansion coefficient of the prism structure 22 of the prism film 200 is Ta, and the thermal expansion coefficient of the adhesive layer 300 is Tb, where Tp < Ta; tp < Tb; tb is ≧ Ta. The skilled person can refer to the above parameter combinations and select appropriate materials to manufacture the preferred diffusion and light-increasing composite optical film 1 of the present embodiment, so as to realize minimum deformation of the diffusion and light-increasing composite optical film 1 under the condition of being heated, thereby improving the optical brightness of the LCD backlight module, that is, improving the product quality, reducing the product defects and rework, and improving the production efficiency.
Further, in a further embodiment, the adhesion force of the prism structure 22 of the prism film 200 is Ba, and the adhesion force of the adhesive layer 300 is Bb, where Bb ≧ Ba. That is to say, in this embodiment, the adhesion force of the adhesion layer 300 for bonding the prism film 200 of the present application together is preferably greater than, or at least equal to, the adhesion force of the prism structure 22 attached to the prism film 200, so that the structure strength and the thermal deformation will have better characteristics, the optical brightness of the LCD backlight module is further improved, and the product quality and the production efficiency are improved.
It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (4)
1. The diffusion and brightening composite optical film for the backlight module is characterized in that the diffusion and brightening composite optical film (1) for the backlight module comprises a diffusion film (100), a prism film (200) and a bonding layer (300) which is uniformly coated between the diffusion film (100) and the prism film (200) and is made of solvent-free UV adhesive for laminating and bonding the diffusion film (100) and the prism film (200) into a whole; the diffusion film (100) is composed of a first PET base material (11) and a light diffusion layer (12) coated on the first PET base material (11), wherein the light diffusion layer (12) is formed by uniformly mixing diffusion particles and a resin material, and the diameters of the diffusion particles are between 3 and 8 mu m; the thickness of the first PET base material (11) is between 90 and 180 mu m, and the thickness of the light diffusion layer (12) is between 5 and 10 mu m; the prism film (200) is composed of a plurality of prism structures (22) which are arranged on a second PET base material (21) in parallel; the prism structure comprises a plurality of prism stripes, the interval of the prism stripes is between 43 and 83 μm, and the height of the prism stripes is between 20 and 32 μm; the prismatic structure (22) of the prismatic film (200) includes at least three prismatic stripes having different pitches and heights.
2. The composite diffuser-intensifying optical film for a backlight module as set forth in claim 1, wherein the prism structure (22) of the prism film (200) has an adhesion force of Ba, and the adhesion force of the adhesive layer (300) is Bb, wherein Bb ≧ Ba.
3. The diffusion-enhanced composite optical film for a backlight unit as set forth in claim 2, wherein the thickness of the diffusion-enhanced composite optical film for a backlight unit is 290-320 μm.
4. The composite diffuser-intensifying optical film for a backlight module as set forth in claim 3, wherein the first PET substrate (11) of the diffuser film (100) is bonded to the prism structure (22) of the prism film (200) by the bonding layer (300), and the second PET substrate (21) of the prism film (200) has a plurality of transparent beads (500) uniformly bonded to one side thereof by a bonding layer (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720838326.0U CN206990843U (en) | 2017-07-11 | 2017-07-11 | A kind of diffusion for backlight module adds lustre to complex optical film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720838326.0U CN206990843U (en) | 2017-07-11 | 2017-07-11 | A kind of diffusion for backlight module adds lustre to complex optical film |
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| Publication Number | Publication Date |
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| CN206990843U true CN206990843U (en) | 2018-02-09 |
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| CN201720838326.0U Active CN206990843U (en) | 2017-07-11 | 2017-07-11 | A kind of diffusion for backlight module adds lustre to complex optical film |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267922A (en) * | 2018-03-05 | 2018-07-10 | 深圳市光科全息技术有限公司 | A kind of optical film |
| CN108549177A (en) * | 2018-04-26 | 2018-09-18 | 深圳Tcl新技术有限公司 | Optical compound film, backlight and liquid crystal display die set |
| CN109597243A (en) * | 2018-12-27 | 2019-04-09 | 凯鑫森(上海)功能性薄膜产业有限公司 | Liquid crystal display laminating film and LCD backlight mould group |
| CN109880506A (en) * | 2018-12-21 | 2019-06-14 | 宁波江北激智新材料有限公司 | A kind of coating composition for spreading the composite membrane laminating layer that adds lustre to and a kind of diffusion add lustre to composite membrane and preparation method thereof |
| CN109975918A (en) * | 2019-04-10 | 2019-07-05 | 深圳康佳电子科技有限公司 | A kind of fitting optical module and liquid crystal module entirely |
| CN114114502A (en) * | 2020-08-31 | 2022-03-01 | 宁波激智科技股份有限公司 | Polarization-maintaining optical film and interference-relieving polarization-maintaining composite prism film |
| CN114236656A (en) * | 2021-11-03 | 2022-03-25 | 深圳市佑明光电有限公司 | Diffusion membrane and preparation method thereof |
| CN114265235A (en) * | 2021-11-19 | 2022-04-01 | 江苏双星彩塑新材料股份有限公司 | Composite membrane for direct type non-diffusion plate backlight module |
| CN114371524A (en) * | 2022-01-20 | 2022-04-19 | 深圳市华星光电半导体显示技术有限公司 | Prism structure and design method thereof |
| CN114675357A (en) * | 2022-04-02 | 2022-06-28 | 南通惟怡新材料科技有限公司 | Light splitting diaphragm |
| CN115097670A (en) * | 2022-06-28 | 2022-09-23 | 深圳市兆驰光元科技有限公司 | Laminated film and manufacturing process thereof |
| CN115808822A (en) * | 2022-12-27 | 2023-03-17 | 江苏双星彩塑新材料股份有限公司 | DPL composite membrane and preparation method thereof |
| CN115826111A (en) * | 2022-12-27 | 2023-03-21 | 江苏双星彩塑新材料股份有限公司 | DOP composite membrane for backlight module and preparation method thereof |
-
2017
- 2017-07-11 CN CN201720838326.0U patent/CN206990843U/en active Active
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267922A (en) * | 2018-03-05 | 2018-07-10 | 深圳市光科全息技术有限公司 | A kind of optical film |
| CN108549177A (en) * | 2018-04-26 | 2018-09-18 | 深圳Tcl新技术有限公司 | Optical compound film, backlight and liquid crystal display die set |
| CN109880506A (en) * | 2018-12-21 | 2019-06-14 | 宁波江北激智新材料有限公司 | A kind of coating composition for spreading the composite membrane laminating layer that adds lustre to and a kind of diffusion add lustre to composite membrane and preparation method thereof |
| CN109597243A (en) * | 2018-12-27 | 2019-04-09 | 凯鑫森(上海)功能性薄膜产业有限公司 | Liquid crystal display laminating film and LCD backlight mould group |
| CN109975918A (en) * | 2019-04-10 | 2019-07-05 | 深圳康佳电子科技有限公司 | A kind of fitting optical module and liquid crystal module entirely |
| CN114114504B (en) * | 2020-08-31 | 2024-04-12 | 宁波激智科技股份有限公司 | Polarization-preserving optical film and interference-relieving polarization-preserving composite prism film |
| CN114114502A (en) * | 2020-08-31 | 2022-03-01 | 宁波激智科技股份有限公司 | Polarization-maintaining optical film and interference-relieving polarization-maintaining composite prism film |
| CN114114504A (en) * | 2020-08-31 | 2022-03-01 | 宁波激智科技股份有限公司 | Polarization-maintaining optical film and interference-relieving polarization-maintaining composite prism film |
| CN114236656A (en) * | 2021-11-03 | 2022-03-25 | 深圳市佑明光电有限公司 | Diffusion membrane and preparation method thereof |
| CN114265235A (en) * | 2021-11-19 | 2022-04-01 | 江苏双星彩塑新材料股份有限公司 | Composite membrane for direct type non-diffusion plate backlight module |
| CN114371524B (en) * | 2022-01-20 | 2023-11-28 | 深圳市华星光电半导体显示技术有限公司 | Prism structure and design method thereof |
| CN114371524A (en) * | 2022-01-20 | 2022-04-19 | 深圳市华星光电半导体显示技术有限公司 | Prism structure and design method thereof |
| CN114675357A (en) * | 2022-04-02 | 2022-06-28 | 南通惟怡新材料科技有限公司 | Light splitting diaphragm |
| CN115097670A (en) * | 2022-06-28 | 2022-09-23 | 深圳市兆驰光元科技有限公司 | Laminated film and manufacturing process thereof |
| CN115097670B (en) * | 2022-06-28 | 2024-04-16 | 深圳市兆驰光元科技有限公司 | Laminating film and manufacturing process thereof |
| CN115808822A (en) * | 2022-12-27 | 2023-03-17 | 江苏双星彩塑新材料股份有限公司 | DPL composite membrane and preparation method thereof |
| CN115826111A (en) * | 2022-12-27 | 2023-03-21 | 江苏双星彩塑新材料股份有限公司 | DOP composite membrane for backlight module and preparation method thereof |
| CN115808822B (en) * | 2022-12-27 | 2024-03-12 | 江苏双星彩塑新材料股份有限公司 | DPL composite membrane and preparation method thereof |
| CN115826111B (en) * | 2022-12-27 | 2024-05-07 | 江苏双星彩塑新材料股份有限公司 | DOP composite membrane for backlight module and preparation method thereof |
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