CN100470261C - Optical film with pervasion and light enhancing effect - Google Patents
Optical film with pervasion and light enhancing effect Download PDFInfo
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- CN100470261C CN100470261C CNB2006100903418A CN200610090341A CN100470261C CN 100470261 C CN100470261 C CN 100470261C CN B2006100903418 A CNB2006100903418 A CN B2006100903418A CN 200610090341 A CN200610090341 A CN 200610090341A CN 100470261 C CN100470261 C CN 100470261C
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Abstract
The invention relates to an optical film which possesses pervasion and intensifying effect, the optical film possesses a light incidence surface and a light outgoing surface, the light outgoing surface possesses several first refraction parts and the second part refraction part, the first refraction part possesses a arc surface, the second refraction part possesses a first incline and the second incline surface, the first incline surface and the second incline surface intersects to form a included angle, and top of the arc surface is higher than the intersected position of the first incline surface and the second incline surface to form proper surface curvature change and guide omitted light beam to generate refraction and pervasion, so it can possesses effect of light pervasion and intensifying, and decrease cost of negative model, and increase ratio of choiceness; besides, the invention possesses top angle of intensifying structure, and ratio of choiceness of optical film can be increased.
Description
Technical field
The present invention relates to a kind of optical thin film, particularly relate to a kind of module backlight that is applied to flat-panel screens, and with the diffusion and the optical thin film of light enhancing effect.
Background technology
In flat-panel screens, mainly include TFT-LCD Thin Film Transistor-LCD, PDP plasma display panel and rear-projection display device at present.Because the big factory of Japan, Korea S and TaiWan, China actively drops into research and development, the production of TFT-LCD LCD and adopts the production equipment that maximizes, so under the situation that the quality of current LCD constantly progresses greatly, its price also keeps falling, thereby driven the demand of LCD, so made the TFT-LCD display become the main flow of present flat-panel screens.
And liquid crystal panel itself can't emit beam, the light source of display need be provided by module backlight, generally speaking, Backlight For Liquid Crystal Display Panels mainly is to adopt straight-down negative, and direct-light-type backlight can be by the increase of fluorescent tube, or uses diffuser plate to reach the brightness requirement of large scale liquid crystal display; Wherein, diffuser plate is divided into internal divergence type and surface diffusion type.The internal divergence type is in an acryl resin (acryl, acrylic) be dispersed with the optical particulate of different refractivity in the resin plate, make the reflection of light homogeneity ground, this moment, light was because the factors such as number percent of the refractive index of optical particulate difference and mixing need be carried out the adjustment of the even property of picture brightness and luminance nonuniformity; The surface diffusion type then is for using the surface roughening of a transparent resin plate, light is reflected and reflects.
In the prior art, as TaiWan, China patent announcement M266466 number " increasing the structure of the light diffusing sheet of brightness ", wherein disclosed the structure that has known down straight aphototropism mode set now, general straight-down negative module, its structure comprises a reflector plate, a plurality of light source, a light diffusing sheet, one first prismatic lens, one second prismatic lens and an optical diffusion film etc.At present in module backlight, common blast technology is the prismatic lens of collocation a slice or two different directions, its principle is after utilizing the refractive index of prism and prism angle with the incident ray refraction, control it by jagged light-emitting face and penetrate angle, allow original light that comes that spreads via diffuser plate concentrate once again, and reduce the light coefficient of losses, and then reach the purpose that increases brightness.Prismatic lens generally is a thin slice of making 75～230 μ m with PET polyester or polycarbonate material, forming spacing on the surface of thin slice is 24～110 μ m, drift angle is the strip prism arrays of 90～110 degree, because of its optical texture and refractive index, and has the effect of optically focused.When using the prismatic lens of a slice rectangular shaped, then front face brightness can be improved more than 1.6 times, if use two prismatic lenses that are homeotropic alignment, then front face brightness can be improved more than 2 times; Relevant patent still can be consulted the TaiWan, China patent announcement M291542 number, and the U.S. announced patent the 5175030th, 5183597,6280063,6277471, No. 5592332, all blast, diffusion technique is had further detailed description.
Yet, the drift angle of the rectangular shape in prismatic lens surface is as easy as rolling off a log impaired making, being collided accidentally when transporting, and the impaired major imperfections such as bright spot that promptly can on display pannel, form in the arbitrary position of drift angle, can't be accepted by the user, its acceptance rate is also lower, more causes the manufacturer greatly to perplex; Therefore a kind of existing known practice is arranged again, be to handle to scabble or to lead the fillet mode in the most advanced part of drift angle, it is impaired that drift angle is not easy, thereby promote the acceptance rate of its making, but this kind practice can make the spotlight effect of this prismatic lens have a greatly reduced quality again, and the backlight of enough brightness can't be provided; And existing known techniques is to add lustre to and light diffusion separate processes, to reach the purpose of adding lustre to and spreading with the combination of a diffuser plate and a slice or two plates that add lustre to respectively, it can't be combined, also significantly to have improved the cost of making.
This shows that the module backlight of above-mentioned existing display obviously still has inconvenience and defective in structure and use, and demands urgently further being improved.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of optical thin film of new structure with diffusion and light enhancing effect, one of current important research and development problem of real genus, also becoming the current industry utmost point needs improved target.
Because the defective that the module backlight of above-mentioned existing display exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of optical thin film of new structure, make it have more practicality with diffusion and light enhancing effect.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
The objective of the invention is to, overcome the defective of the module existence backlight of existing display, and provide a kind of new structure with the diffusion and the optical thin film of light enhancing effect, technical matters to be solved is the effect that makes it spread and add lustre to light, and can reduce the cost of module backlight, thereby be suitable for practicality more.
Another object of the present invention is to; a kind of optical thin film with diffusion and light enhancing effect of new structure is provided; technical matters to be solved is that to make it be the drift angle of protection light-enhancing structure, and can improve the manufacturing acceptance rate of this optical thin film, thereby is suitable for practicality more.
The object of the invention to solve the technical problems is to adopt following technical scheme to realize.A kind of optical thin film according to the present invention's proposition with diffusion and light enhancing effect, this optical thin film has a light entrance face and a light-emitting face, this light-emitting face has the first refractive power portion and the second refractive power portion of plural number, described first, second refractive power portion interlocks and is arranged parallel to each other, this first refractive power portion has an arc surface, this second refractive power portion has one first inclined-plane and one second inclined-plane, this first inclined-plane and second inclined-plane intersect at the top and form an angle, and this arc surface top is higher than this first inclined-plane and intersection, second inclined-plane.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid optical thin film with diffusion and light enhancing effect, the height at wherein said arc surface bottom to top is greater than 1/2nd of this bottom width.
Aforesaid optical thin film with diffusion and light enhancing effect, the height at wherein said arc surface bottom to top equals 1/2nd of this bottom width.
Aforesaid optical thin film with diffusion and light enhancing effect, the height at wherein said arc surface bottom to top is less than 1/2nd of this bottom width.
Aforesaid optical thin film with diffusion and light enhancing effect, wherein said first, second inclined-plane has identical angle of inclination.
Aforesaid optical thin film with diffusion and light enhancing effect, the top that wherein said first, second inclined-plane intersects has a circular arc lead angle.
Aforesaid optical thin film with diffusion and light enhancing effect, wherein said angle are that 60 degree are between 120 degree.
Aforesaid optical thin film with diffusion and light enhancing effect, wherein said angle is the right angle.
Aforesaid optical thin film with diffusion and light enhancing effect, the light entrance face of wherein said optical thin film can be a convex-concave surface for the light diffusion.
The present invention compared with prior art has tangible advantage and beneficial effect.As known from the above, in order to achieve the above object, the optical thin film of preferred embodiment of the present invention, have a light entrance face and light-emitting face, wherein light-emitting face has the first refractive power portion and the second refractive power portion between any two first adjacent refractive power portions of plural number, the first refractive power portion has an arc surface, the second refractive power portion has one first inclined-plane and one second inclined-plane, first inclined-plane and second inclined-plane intersect and form an angle, form suitable surface curvature change and generation refraction of guiding incident ray and diffusion, and this arc surface top is higher than this first inclined-plane and intersection, second inclined-plane, can avoid the second refractive power portion of adding lustre to impaired, can provide a kind of by this with light diffusion and light enhancing effect, and the high optical thin film of acceptance rate.
By technique scheme, the present invention has following advantage at least with the diffusion and the optical thin film of light enhancing effect: optical thin film of the present invention be by this first, staggered and the formation that is arranged parallel to each other of the second refractive power portion, the effect that can make this optical thin film spread and add lustre to light, and by of the design of the first refractive power portion overhead height greater than the second refractive power portion overhead height, effectively prevent drift angle impaired generation flaw when making of this second refractive power portion, significantly promote the purpose of making acceptance rate and can reach, and optical thin film of the present invention can improve front face brightness more than 1.4 times, can fully satisfy the required backlight illumination of display.
In sum, the present invention is relevant a kind of optical thin film with diffusion and light enhancing effect, have a light entrance face and light-emitting face, wherein light-emitting face has the first refractive power portion and the second refractive power portion of plural number, this first refractive power portion has an arc surface, the second refractive power portion has one first inclined-plane and one second inclined-plane, first inclined-plane and second inclined-plane intersect and form an angle, form suitable surface curvature change and generation refraction of guiding incident ray and diffusion, make the present invention with the light diffusion and the effect of adding lustre to by this, and can reduce the cost of module backlight, and can promote it and make acceptance rate; The present invention is provided with the drift angle of protection light-enhancing structure in addition, and can improve the manufacturing acceptance rate of this optical thin film.The present invention has above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on product structure or function, obvious improvement is arranged technically, and produced handy and practical effect, thereby be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the constructing stereo synoptic diagram of preferred embodiment of the present invention.
Fig. 2 is the schematic side view of preferred embodiment of the present invention.
Fig. 3 is the schematic side view of the present invention's second preferred embodiment.
Fig. 4 is the schematic side view of the present invention's the 3rd preferred embodiment.
Fig. 5 is the schematic side view of the present invention's the 4th preferred embodiment.
Fig. 6 is the schematic side view of the present invention's the 5th preferred embodiment.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of optical thin film, structure, feature and the effect thereof that foundation the present invention proposes with diffusion and light enhancing effect, describe in detail as after.
See also shown in Figure 1, it is the structural upright synoptic diagram of preferred embodiment of the present invention, as shown in the figure, the optical thin film with diffusion and light enhancing effect of preferred embodiment of the present invention, include an optical thin film 1, this optical thin film 1 has a substrate 10, and this substrate 10 can be for by the made thin slice of PET polyester material, and the both sides of this substrate 10 have a light-emitting face 20 and a light entrance face 30 respectively, wherein:
This light entrance face 30 can be one and has light diffusion effect or concavo-convex surface, can effectively prevent to be stained with sticking (Wet-off) phenomenon and take place, and can simplify the composition member of flat-panel screens module backlight;
This light-emitting face 20, one has the first refractive power portion 21 and the second refractive power portion 24 between any two first adjacent refractive power portions 21 of plural number, and this light-emitting face 20 has the first refractive power portion 21 and the second refractive power portion 24 that plural number is staggered and be arranged parallel to each other in this preferred embodiment;
A kind of optical thin film 1 with light diffusion and light enhancing effect can be provided by this, and it can reduce the manufacturing cost of module backlight.
See also shown in Figure 2, it is the schematic side view of preferred embodiment of the present invention, this first refractive power portion 21 has an arc surface, this second refractive power portion 24 has one first inclined-plane 22 and one second inclined-plane 23, this first inclined-plane 22 and second inclined-plane 23 intersect and form the prism with an angle, wherein this arc surface top is higher than prism top height, and the height at this arc surface bottom to top, be can greater than, be equal to or less than 1/2nd of this bottom width, and be a semiellipse or semicircle sample attitude, and with the height at this arc surface bottom to top greater than being good in 1/2nd of this bottom width, can produce good light diffusion effect, and this first inclined-plane, second inclined- plane 22,23 have identical angle of inclination, and the hypotenuse with equal length, and this first inclined-plane, second inclined-plane 22, the 23rd, intersect and form an angle at the top, this angle can be 60 degree between 120 degree, and is wherein preferable with the spotlight effect at right angle again; And the overhead height of this arc surface is greater than this first inclined-plane, second inclined-plane, 22,23 drift angle height; and has a difference in height d; be considered as being not easy relatively impaired top (position is higher) by this arc surface; can effectively protect the top (position is lower) on this first inclined-plane, second inclined- plane 22,23; and can avoid the drift angle of prism impaired easily; and the roof intersection position on this first inclined-plane, second inclined- plane 22,23 can have a circular arc lead angle 25 (as shown in Figure 3), more can prevent the prism vertex angle damage.
See also shown in Figure 4, it is the schematic side view of the present invention's the 3rd preferred embodiment, as shown in the figure, light-emitting face 20 among the present invention does not limit the permutation and combination of the first refractive power portion, two refractive power portions 21,24, the light-emitting face 20 of blooming 1 in the present embodiment, be the second refractive power portion 24 with one first refractive power portion 21 and two mutual adjacency, series arrangement forms; Or be arranged to form light-emitting face 20 (as shown in Figure 5) with two interconnective first refractive power portions 21 and one second refractive power portion 24; Also can constitute light-emitting face 20 (as shown in Figure 6) by the first refractive power portion 21 and the plural second refractive power portion 24 of joining that plural number joins.
It below only is the formation aspect that lists several light-emitting faces 20, be the various light-emitting faces 20 that constituted by this first refractive power portion 21 and this second refractive power portion 24, yet those skilled in the art is when knowing, the combination and variation of its number, arrangement is changed flexibly when visual actual demand, and the present invention is not limited.
In sum, optical thin film 1 of the present invention, be by this first, the second refractive power portion 21, the 24 staggered and formations that are arranged parallel to each other, the effect that can make this optical thin film 1 spread and add lustre to light, and by of the design of the first refractive power portion, 21 overhead heights greater than the second refractive power portion, 24 overhead heights, can effectively prevent drift angle impaired generation flaw when making of this second refractive power portion 24, significantly promote the purpose of making acceptance rate and can reach, and optical thin film 1 of the present invention can improve front face brightness more than 1.4 times, can fully satisfy the required backlight illumination of display.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (9)
1, a kind of optical thin film with diffusion and light enhancing effect is characterized in that:
This optical thin film has a light entrance face and a light-emitting face, this light-emitting face has the first refractive power portion and the second refractive power portion of plural number, described first, second refractive power portion interlocks and is arranged parallel to each other, this first refractive power portion has an arc surface, this second refractive power portion has one first inclined-plane and one second inclined-plane, this first inclined-plane and second inclined-plane intersect at the top and form an angle, and this arc surface top is higher than this first inclined-plane and intersection, second inclined-plane.
2, the optical thin film with diffusion and light enhancing effect according to claim 1, the height that it is characterized in that wherein said arc surface bottom to top is greater than 1/2nd of this bottom width.
3, the optical thin film with diffusion and light enhancing effect according to claim 1 is characterized in that the height at wherein said arc surface bottom to top equals 1/2nd of this bottom width.
4, the optical thin film with diffusion and light enhancing effect according to claim 1, the height that it is characterized in that wherein said arc surface bottom to top is less than 1/2nd of this bottom width.
5, the optical thin film with diffusion and light enhancing effect according to claim 1 is characterized in that wherein said first, second inclined-plane has identical angle of inclination.
6, the optical thin film with diffusion and light enhancing effect according to claim 1 is characterized in that the top that wherein said first, second inclined-plane intersects has a circular arc lead angle.
7, the optical thin film with diffusion and light enhancing effect according to claim 1 is characterized in that wherein said angle is that 60 degree are between 120 degree.
8, the optical thin film with diffusion and light enhancing effect according to claim 1 is characterized in that wherein said angle is the right angle.
9, the optical thin film with diffusion and light enhancing effect according to claim 1, the light entrance face that it is characterized in that wherein said optical thin film are a convex-concave surface for the light diffusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100903418A CN100470261C (en) | 2006-06-29 | 2006-06-29 | Optical film with pervasion and light enhancing effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100903418A CN100470261C (en) | 2006-06-29 | 2006-06-29 | Optical film with pervasion and light enhancing effect |
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| Publication Number | Publication Date |
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| CN101097267A CN101097267A (en) | 2008-01-02 |
| CN100470261C true CN100470261C (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100903418A Expired - Fee Related CN100470261C (en) | 2006-06-29 | 2006-06-29 | Optical film with pervasion and light enhancing effect |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201544852A (en) * | 2014-05-22 | 2015-12-01 | Beautylight Optronics Co Ltd | Optical film |
| CN104696876B (en) * | 2015-04-02 | 2017-07-04 | 江苏双星彩塑新材料股份有限公司 | Diaphragm and backlight module and liquid crystal display with the diaphragm are widened in visual angle |
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- 2006-06-29 CN CNB2006100903418A patent/CN100470261C/en not_active Expired - Fee Related
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| CN101097267A (en) | 2008-01-02 |
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Granted publication date: 20090318 |