CN202975375U - Bright enhancement film and display apparatus - Google Patents
Bright enhancement film and display apparatus Download PDFInfo
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- CN202975375U CN202975375U CN 201220342775 CN201220342775U CN202975375U CN 202975375 U CN202975375 U CN 202975375U CN 201220342775 CN201220342775 CN 201220342775 CN 201220342775 U CN201220342775 U CN 201220342775U CN 202975375 U CN202975375 U CN 202975375U
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- enhancement film
- bright enhancement
- prism
- prism structure
- optical surface
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Abstract
The utility model relates to the field of a display technology, and specially relates to a bright enhancement film and a display apparatus. The bright enhancement film comprises base material and a wave-shaped prism structure layer. The base material comprises a first optical surface and a second optical surface which are positioned face to face; the prism structure layer is arranged on the first optical surface; and the prism structure layer comprises several prism units which are arranged in an array at the same direction, the prism units possess a periodical up-and-down fluctuating state at the length stretching direction, the average height of the prism units is H, the length of the wave-shaped fluctuating period is T, and T is larger than 101*H. According to the bright enhancement film and the display apparatus provided in the utility model, the up-and-down fluctuating prism structure is provided, light leakage phenomenon caused by long distance attachment of the traditional prism structure is minimized, the period of the fluctuating prism structure is long and not easy to crack when scratched by hard objects, and the yield rate of a light emitting module is increased. Accordingly, the bright enhancement film is advantageous in optical performance and assembly process aspects.
Description
Technical field
The utility model relates to the display technique field, particularly relates to a kind of bright enhancement film with prism structure that can be applicable to liquid crystal display.
Background technology
At present, bright enhancement film (BEF, Brightness Enhancement Film) in the display devices such as the light that light source is sent, especially monitor, the normal bright enhancement film (BEF) of using increases display brightness and the energy of saving the display battery apparatus to be used for converging to be widely used in illuminating module.The principle of bright enhancement film be by refraction and reflection, the light outside directive observer visual angle is adjusted to the observer visual angle within, so just improved the utilization factor of luminous energy that light source sends.
Bright enhancement film also claims brightness enhancement film, in the extraordinary bottom surface of the transparency, uses such as the organic material within acryl resin etc., the optical thin film of precise forming one deck prism structure.This bright enhancement film structure is assembled in the backlight front, the light that light source can be sent is assembled to display device user direction, monolithic uses and front face brightness can be brought up to 60%, if with two bright enhancement films overlapping being used in conjunction with orthogonally, front face brightness can be improved approximately 110%.
in the backlight module (back light module) of general liquid crystal display (LCD), usually comprise several optical sheets and diaphragm, light guide plate for example, diffusion sheet, diffuser plate and brightness enhancement film etc., wherein this brightness enhancement film normally is made of a substrate and an optically focused prism structure layer, this substrate and optically focused prism structure layer are all made by the transparent resin material, this optically focused prism structure layer is formed on the surface of this substrate, the prism structure layer is consisted of in order to the prism bar that converges light by many, these prism bar are arranged according to a direction, form a prism array, as shown in Figure 1A.
When the light source of this backlight module produced light, light entered in the substrate of this brightness enhancement film by this light guide plate and diffusion sheet, then enters the prism structure layer of this brightness enhancement film again, produced suitable angle refraction when light is penetrated.As shown in Figure 1B, the effect of this prism film is exactly to allow the light that disperses for example concentrate on bright dipping in 70 degree scopes centered by normal, its principle is to utilize refraction and total reflection law, allowing the light that incides prism side (for example outside the angular range that penetrates along normal both sides 35 degree) with relatively large incident angle reflect again again is utilized, can make in the axle center brightness increases by 60%, and then reaches the optical effect of light-ray condensing and the raising efficiency of light energy utilization.
Yet, general brightness enhancement film is usually used with other diaphragm collocation in practice, for example two prismatic lenses are mutually orthogonal overlapping with prism direction, wherein the prism structure of a prismatic lens contacts with the back light sliding surface of another kind of prismatic lens, and for example a prismatic lens contacts with the smooth liquid crystal panel of liquid crystal display.Traditional prism structure peak section is linear, can fit tightly with the smooth face length distance of collocation diaphragm, easily cause steam in time to discharge and adsorb with shiny surface on, cause thus the globule that enters absorption and then directly enter next diaphragm, easily cause the obvious light leakage phenomena of visual sense feeling, affect the optical quality of liquid crystal display.
For this reason, disclose the brightness enhancement film that a kind of prism structure is the dipping and heaving shape in prior art, as shown in Figure 2, this brightness enhancement film is mainly in order to play the effect of effective prevention Vapor adsorption.
But; this brightness enhancement film often can be destroyed because of scraping prism structure in actual liquid crystal display assembling process; its reason is that this fluctuating prism structure has the less cycle; cause each bossing shorter; easily burst apart when being subject to External Force Acting and form the light leak zone, thereby forming bright spot and the liquid crystal display optical quality is descended.
The utility model content
The technical matters that (one) will solve
The technical problems to be solved in the utility model is to provide a kind of bright enhancement film, to overcome the limited and scratch resistance poor-performing of bright enhancement film light enhancing effect of the prior art and then to affect the defective of whole display device picture disply quality.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of bright enhancement film on the one hand, base material and be wavy prism structure layer, described base material comprise the first optical surface and be positioned at aspectant the second optical surface of described the first optics, and described prism structure layer is arranged on described the first optical surface; Described prism structure layer is lined up array by several prism unit by same direction, described prism unit is periodically dipping and heaving state in the length extending direction with respect to the first optical surface, described prism unit is set has average height H, wavy fluctuating Cycle Length T, T＞101H.
Further, in described prism structure layer, any two adjacent prism unit crest crest line spacings are 11.55 μ m ~ 207.86 μ m.
Further, the xsect of described prism unit is isosceles triangle.
Further, the xsect of described prism unit is that drift angle is the isosceles triangle of circular arc.
Further, described arc radius is 1-20 μ m.
Further, the xsect of described prism unit is that drift angle is the isosceles triangle of smooth curve.
Further, the drift angle angle of described isosceles triangle is 60 ° ~ 120 °, and average height H is 10 μ m ~ 60 μ m.
Further, the variation range of described prism unit height h periodic undulations on the length extending direction is the 2%-20% of cell-average height H.
Further, the material of described prism unit is ultraviolet curable resin;
The material of described base material is polyethylene terephthalate or polymethylmethacrylate.
On the other hand, the utility model also provides a kind of display device, comprises above-mentioned bright enhancement film.
(3) beneficial effect
Technical solutions of the utility model have following advantage: the bright enhancement film that the utility model provides and display device, has the prism structure that just rises and falls, can alleviate the light leakage phenomena of fitting and causing because of the long distance of conventional prism structure, and the relief fabric cycle is longer, be difficult for bursting apart with the hard objects scraping in use, can improve illuminating module and produce yield.Therefore, this brightness enhancement film all has higher advantage aspect optical appearance and assembly technology.
Description of drawings
Figure 1A is prior art one bright enhancement film structural representation;
Figure 1B is prior art one bright enhancement film theory structure schematic diagram;
Fig. 2 is prior art two bright enhancement film structural representations;
Fig. 3 is the utility model embodiment one bright enhancement film structural representation;
Fig. 4 is prism unit structural perspective in the utility model embodiment one bright enhancement film;
Fig. 5 is prism unit structure cut-open view in the utility model embodiment one bright enhancement film;
Fig. 6 is that the utility model embodiment bright enhancement film and the prior art two bright enhancement film scratch resistance impacts of performance compare schematic diagram;
Fig. 7 is the utility model embodiment two bright enhancement film structural representations;
Fig. 8 is prism unit structural perspective in the utility model embodiment two bright enhancement films;
Fig. 9 is prism unit structure cut-open view in the utility model embodiment two bright enhancement films;
Figure 10 is bright enhancement film scratch resistance performance performance in prior art two;
Figure 11 is the performance of the utility model embodiment bright enhancement film scratch resistance performance.
Embodiment
The below describes embodiment of the present utility model in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
in description of the present utility model, it will be appreciated that, term " " center ", " vertically ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance.
In description of the present utility model, need to prove, unless clear and definite regulation and restriction are separately arranged, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.
In addition, in description of the present utility model, except as otherwise noted, the implication of " a plurality of " is two or more.
Embodiment 1
As shown in Fig. 3-5, in this embodiment, bright enhancement film 100 includes a base material 102, and a prism structure layer 108.Base material 102 has first optical surface 106 and one and is positioned at aspectant the second optical surface 104 of the first optics.On the first optical surface 106, prism structure layer 108 is set; Prism structure layer 108 is lined up array by several prism unit by same direction, prism unit has with respect to the first optical surface in the length extending direction and is periodically dipping and heaving state, prism unit is set has average height H, wavy fluctuating Cycle Length T, T＞101H.
This prism structure layer 108 comprises that several are with respect to the isoceles triangle prism structure unit 110 of the first optical surface dipping and heaving shape, the dipping and heaving shape extends to be periodically with respect to the first optical surface along first direction 120 in prism structure unit 110, and several prism structures unit 110 is along second direction 122 adjacent arrangement in twos, the ridge crest line of any two adjacent prisms has the fixed skew in 1/4th cycles, it is 46 μ m that the ridge crest line has fixed intervals P, consists of prism structure layer 108.
Referring to Fig. 4, Fig. 5, Fig. 4 shows the isoceles triangle prism structure unit 110 of dipping and heaving shape, fluctuating shape prism has ridge crest line 114, and ridge crest line 114 is by equation y=2*sin(x/400) μ m determines, and plane, crest line place is vertical with the first optical surface 106; Fig. 5 shows that prism structure cell height h changes continuously along its length direction, and its Changing Pattern is h=23+2*sin(x/400) μ m, namely prism structure average height H is 23 μ m, and prism height fluctuating cycle T is 2512 μ m, and the triangular prism drift angle is 90 °.
In addition, the drift angle of this isoceles triangle shape can have circular arc or arbitrary smooth curve, and the radius of this circular arc is 1-20 μ m, has more in actual use the advantage of scratch-resistant take circular arc or arbitrary smooth curve as top structure replaces sharp-pointed drift angle.
Need to prove, the material of this base material and polyethylene terephthalate or the polymethylmethacrylate of being limited to without cease can be also both potpourris.The material of this prism structure layer is UV-cured resin, is selected from a kind of or two or more at least potpourri in epoxy acrylic resin, amino acrylic resin, polyvinyl resin, polyurethane acrylic resin, polyester acrylic resin.
The below specifically describes the preparation method of brightness enhancement film:
Coating ultraviolet light curing resin bed on base material 102 first optical surfaces 106, with the mold wheel that has with the microstructure complementary structure of prism structure layer 108, UV-cured resin is carried out press mold, make it to form required microstructure, use again subsequently UV-irradiation, the UV-cured resin layer that forms microstructure is solidified, thereby prism structure layer 108 is arranged on the first optical surface 106 of base material 102.
In this embodiment, the prism height fluctuations is ± 2 μ m, variation range is 8.7%, cause thus have when contacting with smooth diaphragm enough to the space allow steam get rid of, can effectively prevent Vapor adsorption, in addition, because the prism period of change reaches 2512 microns, if run into the rough object scraping when assembling, the more original technology of the present embodiment has more the scratch resistance ability, as shown in Figure 6.Wherein A is the anti-scratch ability of prior art products, and B is the anti-scratch ability of the present embodiment, and C is rough object.
Can draw with reference to figure 6: in identical length, in the bright enhancement film in the present embodiment, the prism fluctuating frequency is significantly less than of the prior artly, and cutter can gentle movement when Mould Machining, thereby crudy can be provided or shorten process time.
In addition, use same rough surface weight horizontal thrust respectively with prior art two in the bright enhancement film structure and after two kinds of structures of the utility model bright enhancement film once rub, with reference to Figure 10, structure ridges in prior art two presents long and dark collapse state, and the bright enhancement film structure spine in the utility model embodiment is short and shallow collapse state, as seen the destroyed degree of the bright enhancement film in the present embodiment is relatively low, has more scratch resistance, with reference to Figure 11.Have preferably scratch resistance to the serviceable life of bright enhancement film and will play very important effect to its light enhancing effect, and then having influence on the picture quality of whole display device.
Embodiment 2
Referring to Fig. 7.The second embodiment and the first embodiment are similar, and in this embodiment, bright enhancement film 200 includes a base material 202, and a prism structure layer 208.Base material 202 has first optical surface 206 and one and is positioned at aspectant the second optical surface 204 of the first optics.on the first optical surface 206, prism structure layer 208 is set, this prism structure layer 208 comprises that several are with respect to the isoceles triangle prism structure unit 210 of the first optical surface dipping and heaving shape, the dipping and heaving shape extends to be periodically with respect to the first optical surface along first direction 220 in prism structure unit 210, and the adjacent prisms structural unit is along second direction 222 adjacent arrangement in twos, it is poor that the second embodiment and the first embodiment difference are that the ridge crest line of any two adjacent prisms has random phase, it is 50 μ m that the ridge crest line has fixed intervals P, consist of prism structure layer 208.
Fig. 8 shows the isoceles triangle prism structure unit 210 of dipping and heaving shape, and fluctuating shape prism has ridge crest line 214, and ridge crest line 214 is by equation y=3*sin(x/600) μ m determines, and plane, crest line place is vertical with the first optical surface 206; Fig. 9 shows that prism structure cell height h changes continuously along its length direction, and its Changing Pattern is h=33+3*sin(x/600) μ m, namely prism structure average height H is 33 μ m, prism height fluctuating cycle T is 3768 μ m; The triangular prism drift angle is 90 °.
In addition, the drift angle of this isoceles triangle shape can have circular arc or arbitrary smooth curve, and the radius of this circular arc is 1-20 μ m, has more in actual use the advantage of scratch-resistant take circular arc or arbitrary smooth curve as top structure replaces sharp-pointed drift angle.
Described base material 202 materials are polymethylmethacrylates, and the material of described prism structure layer 208 is the polyurethane acroleic acid fat of uV curable.
The preparation method of described brightness enhancement film is: coating ultraviolet light curing resin bed on base material 202 first optical surfaces 206, with the mold wheel that has with the microstructure complementary structure of prism structure layer 208, UV-cured resin is carried out press mold, make it to form required microstructure, use again subsequently UV-irradiation, the UV-cured resin layer that forms microstructure is solidified, thereby prism structure layer 208 is arranged on the first optical surface 206 of base material 202.
In this embodiment, the prism height fluctuations is ± 3 μ m, variation range is 12%, cause thus have when contacting with smooth diaphragm enough to the space allow steam get rid of, can effectively prevent Vapor adsorption, in addition, because the prism period of change reaches 3768 μ m, if run into the rough object scraping when assembling, the more original technology of the present embodiment has more the scratch resistance ability, as shown in Figure 6.The ridge crest line of adjacent prisms has fixed skew in the first embodiment in addition, prism rises and falls and easily form periodic stripe on macroscopic view, easily form mole interference fringe when using with other diaphragm collocation with periodic structure, affect optical appearance, therefore in the second embodiment, the ridge crest line of adjacent prisms has poor can the avoiding of random phase easily form periodic stripe on macroscopic view, thereby optical appearance can further be provided.
The bright enhancement film that the utility model provides, have the prism structure that just rises and falls, can alleviate the light leakage phenomena of fitting and causing because of the long distance of conventional prism structure, and the relief fabric cycle is longer, be difficult for bursting apart with the hard objects scraping in use, can improve illuminating module and produce yield.Therefore, this brightness enhancement film all has higher advantage aspect optical appearance and assembly technology.
In addition, the utility model also provides a kind of display device, comprises the bright enhancement film structure in above-described embodiment.This display device comprises LCD computer, LCD TV, panel computer, liquid crystal display, mobile phone or other electronic products.
The display device that the utility model provides, the bright enhancement film that adopts has the prism structure that just rises and falls, can alleviate the light leakage phenomena of fitting and causing because of the long distance of conventional prism structure, and the relief fabric cycle is longer, be difficult for bursting apart with the hard objects scraping in use, can improve illuminating module and produce yield.Therefore, this brightness enhancement film all has higher advantage aspect optical appearance and assembly technology.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (10)
1. a bright enhancement film, is characterized in that, comprising: base material and be wavy prism structure layer, described base material comprise the first optical surface and be positioned at aspectant the second optical surface of described the first optics, and described prism structure layer is arranged on described the first optical surface; Described prism structure layer is lined up array by several prism unit by same direction, described prism unit is periodically dipping and heaving state in the length extending direction with respect to the first optical surface, described prism unit is set has average height H, wavy fluctuating Cycle Length T, T＞101*H.
2. bright enhancement film as claimed in claim 1, is characterized in that, in described prism structure layer, any two adjacent prism unit crest crest line spacings are 11.55 μ m ~ 207.86 μ m.
3. bright enhancement film as claimed in claim 1, is characterized in that, the xsect of described prism unit is isosceles triangle.
4. bright enhancement film as claimed in claim 1, is characterized in that, the xsect of described prism unit is that drift angle is the isosceles triangle of circular arc.
5. bright enhancement film as claimed in claim 4, is characterized in that, described arc radius is 1-20 μ m.
6. bright enhancement film as claimed in claim 1, is characterized in that, the xsect of described prism unit is that drift angle is the isosceles triangle of smooth curve.
7. bright enhancement film as claimed in claim 3, is characterized in that, the drift angle angle of described isosceles triangle is 60 ° ~ 120 °, and average height H is 10 μ m ~ 60 μ m.
8. bright enhancement film as claimed in claim 1, is characterized in that, the variation range of described prism unit height h periodic undulations on the length extending direction is the 2%-20% of cell-average height H.
9. bright enhancement film as claimed in claim 1, is characterized in that, the material of described prism unit is ultraviolet curable resin;
The material of described base material is polyethylene terephthalate or polymethylmethacrylate.
10. a display device, is characterized in that, comprises the described bright enhancement film of claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342775 CN202975375U (en) | 2012-07-13 | 2012-07-13 | Bright enhancement film and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342775 CN202975375U (en) | 2012-07-13 | 2012-07-13 | Bright enhancement film and display apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202975375U true CN202975375U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220342775 Expired - Lifetime CN202975375U (en) | 2012-07-13 | 2012-07-13 | Bright enhancement film and display apparatus |
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| CN (1) | CN202975375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797168A (en) * | 2017-11-28 | 2018-03-13 | 东莞市聚隆电子材料有限公司 | Film and its application process with irregular optically guiding structure |
| CN114355498A (en) * | 2021-12-29 | 2022-04-15 | 中航华东光电有限公司 | Peep-proof brightening polarizer and method for improving peep-proof and brightening performance of display |
-
2012
- 2012-07-13 CN CN 201220342775 patent/CN202975375U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797168A (en) * | 2017-11-28 | 2018-03-13 | 东莞市聚隆电子材料有限公司 | Film and its application process with irregular optically guiding structure |
| CN114355498A (en) * | 2021-12-29 | 2022-04-15 | 中航华东光电有限公司 | Peep-proof brightening polarizer and method for improving peep-proof and brightening performance of display |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHANGJIAGANG FREE TRADE ZONE KANGDE FILM INDUSTRY Co.,Ltd. Assignor: ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL Co.,Ltd. Contract record no.: 2014320010151 Denomination of utility model: Bright enhancement film and display device Granted publication date: 20130605 License type: Exclusive License Record date: 20140902 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
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Effective date of registration: 20190121 Granted publication date: 20130605 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220121 Granted publication date: 20130605 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |