CN203396970U - Novel brightening and diffusing composite film - Google Patents
Novel brightening and diffusing composite film Download PDFInfo
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- CN203396970U CN203396970U CN201220737286.8U CN201220737286U CN203396970U CN 203396970 U CN203396970 U CN 203396970U CN 201220737286 U CN201220737286 U CN 201220737286U CN 203396970 U CN203396970 U CN 203396970U
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Abstract
A novel brightening and diffusing composite film is disclosed. A brightening layer is arranged on one surface of a transparent substrate, while a scratch-proof layer is arranged on the other surface of the transparent substrate. The brightening layer is provided with two types of prism structures, one type being prism structures each having a triangular cross section while the other type being prism structures each having a semi-circular top part. The novel brightening and diffusing composite film provided by the utility model is simple in structure, reduced in number of optical films used by a backlight module, simplified in assembling technology, and reduced in cost; and the novel brightening and diffusing composite film guarantees the unification of the scratch-proof effect, the brightening effect, and the covering effect and satisfies the requirements of highly refined liquid crystal displays.
Description
Technical field
The utility model relates to a kind of optical thin film, particularly a kind of novel blast diffusion composite membrane with blast and diffusion function.
Background technology
Backlight module is one of key component of liquid crystal indicator, and because liquid crystal itself is not luminous, the critical function of backlight module is used for display panels at the uniform area source of supply.
In tradition LCD backlight source module mainly by light source, light guide plate, on light guide plate exiting surface, be disposed with lower diffusion barrier, vertical brightness enhancement film, horizontal brightness enhancement film, upper diffusion barrier, the light that light sends by this light guide plate exiting surface is by the even light action of diffusion barrier and the optically focused effect of brightness enhancement film, reach luminous energy and be evenly distributed, the optical effect of light-ray condensing.But the blooming piece that the backlight module of this structure is used is more, assembly technology is complicated, and cost is higher, and the backlight module thickness of this structure is large, does not meet the lightening development trend of present backlight.Part backlight is for diffusion barrier under cost-saving employing, brightness enhancement film, and upper diffusion barrier, though reduced blooming piece, light source utilization ratio reduces, and product brightness is reduced, and backlight uniformity coefficient also reduces.In order to address the above problem, many producers start the composite membrane that development has blast and diffusion function, and object is in order to guarantee that product optical quality can not reduce in the use reducing blooming piece.But composite membrane is in the market in brightness enhancement layer optical design, all adopt single size prism structure, when prism cross-section is triangle, because rib peak, top is very sharp-pointed, make the anti-scratch poor effect of product brightness enhancement layer, when prism top adopts circular design, lost again the brightening effect of product; And the diffusion particle of diffusion layer easily scratches light guide plate.
Utility model content
Technical problem to be solved in the utility model is the weak point existing for prior art, and a kind of novel blast diffusion composite membrane is provided.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of novel blast diffusion composite membrane, it is provided with brightness enhancement layer in the one side of transparent base, another side at transparent base is provided with anti-scratch layer, in transparent base, stochastic distribution light diffusion particle, described brightness enhancement layer is provided with two kinds of prism structures, for cross section is the prism structure of three-legged structure, another kind of is the top prism structure that is semicircular structure; Described diffusion particle is comprised of the diffusion particle of two kinds of sizes of size, and mean grain size 1～10 μ m of small size diffusion particle, accounts for 50～60% of total diffusion particle quality; The mean grain size of large scale diffusion particle is 11～20 μ m, accounts for 40～50% of total diffusion particle quality; The diffusion particle random alignment of two kinds of sizes of size.
In above-mentioned blast diffusion composite membrane, the prism structure quantity that described cross section is three-legged structure accounts for the 45-75% of prism sum, and rib spacing is 35-50um; Top is the 25-55% that the prism structure quantity of semicircular structure accounts for prism sum, and rib spacing is 45-65um.
In above-mentioned blast diffusion composite membrane, described top is that the top of the prism structure of semicircular structure is arc-shaped structure, circular arc radian is 30 °～60 °, radius be the overhead height of 5-10 μ m ，Qi top and the cross section prism structure that is three-legged structure poor be the length of arc radius.
In above-mentioned blast diffusion composite membrane, described anti-scratch layer is formed through heat curing by anti-scratch particle, melmac or acryl resin.
Compared with prior art, the utlity model has following advantage:
1. by stochastic distribution light diffusion particle in transparent base, played the effect of light diffusion layer, and by the one side at base material, brightness enhancement layer is set, make the light source of backlight module only by single blast diffusion composite membrane, can make source light homogenising and luminance raising, reduced the quantity of the blooming piece of backlight module use, simplify assembly technology, reduced cost.
2. by be provided with the prism of two kinds of sizes in brightness enhancement layer, the brightening effect of traditional brightening diffusion film and the problem that scratch resistance can not be taken into account have been solved.
3. by the diffusion particle of two kinds of sizes of size is distributed in transparent base immediately, can effectively utilize the space of base material, better to the diffusion effect of light, base material another side is provided with anti-scratch layer, has solved traditional brightening diffusion film light guide plate is scratched to problem.
4. the novel brightening diffusion film that the utility model provides has guaranteed the unification of anti scuffing effect, brightening effect and covering effect, has met the requirement of the liquid crystal display of high-precision refinement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, each list of reference numerals is: 1, transparent base; 2, light diffusion particle; 3, brightness enhancement layer; 4, the prism structure that top is semicircular structure; 5, cross section is the prism structure of three-legged structure; 6, anti-scratch layer; 7, anti-scratch particle.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
With reference to Fig. 1, the utility model comprises transparent PET basic unit 1, and in transparent PET basic unit, stochastic distribution the light diffusion grain 2 of two kinds of sizes of size, plays the effect of light diffusion.Upper strata in transparent PET basic unit 1 is provided with brightness enhancement layer 3, and brightness enhancement layer is provided with the prism structure 4 that drift angle is semicircle arcuation, and circular arc radius-of-curvature is 5～10 μ m.Between prism structure, distance is controlled between 45-65um again, and is provided with the prism that cross section is three-legged structure, and its rib spacing is 35-50um.When guaranteeing high brightening effect, can prevent that brightness enhancement layer counter plate from causing scuffing.Lower floor in transparent PET basic unit 1 is provided with anti-scratch layer 6, is provided with anti-scratch particle 7 in anti-scratch layer, and anti-scratch layer forms through heat curing by anti-scratch particle, melmac or acryl resin, prevents from scratching light guide plate.
Light diffusion particle in transparent base can be used PMMA particle, also can use silica dioxide granule or siloxane particles.The anti-scratch particle of anti-scratch layer can be used PMMA particle.
The formation method of the anti-scratch layer in the utility model can be direct laminating or coating, coating process can be: slit coating (slit die coating), micro-intaglio printing coating (micro gravurecoating) or roller coating (roller coating), but be not limited to this.
Brightness enhancement layer in the utility model is made, and can adopt known cylinder impression (roller imprint) or rice transfer printing (nanoimprinting lithography) technology how, but be not limited to this.
When using novel brightening diffusion film of the present utility model, only need be arranged on the exiting surface of light guide plate, anti-scratch layer is contacted with the exiting surface of light guide plate; Lower floor's diffusion barrier and the brightness enhancement film of the alternative traditional backlight module of novel brightening diffusion film of the present utility model.
Claims (3)
1. composite membrane is spread in a novel blast, it is characterized in that, one side at transparent base is provided with brightness enhancement layer, another side at transparent base is provided with anti-scratch layer, described brightness enhancement layer is provided with two kinds of prism structures, for cross section is the prism structure of three-legged structure, another kind of is the top prism structure that is semicircular structure.
2. blast diffusion composite membrane according to claim 1, is characterized in that, the prism rib spacing that described cross section is three-legged structure is 35-50um; Top is that the rib spacing of the prism structure of semicircular structure is 45-65um.
3. composite membrane is spread in blast according to claim 2, it is characterized in that, described top is that the top of the prism structure of semicircular structure is arc-shaped structure, circular arc radian is 30 °～60 °, radius be the overhead height of 5-10 μ m ，Qi top and the cross section prism structure that is three-legged structure poor be the length of arc radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220737286.8U CN203396970U (en) | 2012-12-28 | 2012-12-28 | Novel brightening and diffusing composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220737286.8U CN203396970U (en) | 2012-12-28 | 2012-12-28 | Novel brightening and diffusing composite film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203396970U true CN203396970U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220737286.8U Expired - Lifetime CN203396970U (en) | 2012-12-28 | 2012-12-28 | Novel brightening and diffusing composite film |
Country Status (1)
| Country | Link |
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| CN (1) | CN203396970U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957606A (en) * | 2018-07-05 | 2018-12-07 | 深圳创维－Rgb电子有限公司 | A kind of design method and compound film sheet of compound film sheet |
-
2012
- 2012-12-28 CN CN201220737286.8U patent/CN203396970U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957606A (en) * | 2018-07-05 | 2018-12-07 | 深圳创维－Rgb电子有限公司 | A kind of design method and compound film sheet of compound film sheet |
| CN108957606B (en) * | 2018-07-05 | 2021-03-30 | 深圳创维－Rgb电子有限公司 | Design method of composite diaphragm and composite diaphragm |
| US11947137B2 (en) | 2018-07-05 | 2024-04-02 | Shenzhen Skyworth-Rgb Electronic Co., Ltd | Method for composite membrane and composite membrane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |