CN102540293A - Prism structure light enhancement film with scraping resistance characteristic - Google Patents
Prism structure light enhancement film with scraping resistance characteristic Download PDFInfo
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- CN102540293A CN102540293A CN2011104336910A CN201110433691A CN102540293A CN 102540293 A CN102540293 A CN 102540293A CN 2011104336910 A CN2011104336910 A CN 2011104336910A CN 201110433691 A CN201110433691 A CN 201110433691A CN 102540293 A CN102540293 A CN 102540293A
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- prism
- prism unit
- enhancement film
- bulge
- bright enhancement
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- 238000007790 scraping Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims description 28
- 238000010276 construction Methods 0.000 claims description 12
- 239000004925 Acrylic resin Substances 0.000 claims description 10
- 229920000178 Acrylic resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000004593 Epoxy Substances 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- YTLYLLTVENPWFT-UPHRSURJSA-N (Z)-3-aminoacrylic acid Chemical compound N\C=C/C(O)=O YTLYLLTVENPWFT-UPHRSURJSA-N 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
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Abstract
The invention provides a prism structure light enhancement film with the scraping resistance characteristic, which comprises a base material and a prism structure layer. The prism structure layer is positioned on the base material. The prism structure layer is formed in a mode that a plurality of prism unit structures are arranged into an array in the same direction. Each prism unit structure comprises a plurality of first prism unit structures and a plurality of second prism unit structures. Each second prism unit structure is provided with a plurality of discontinuous bulge structures in the extension direction of the corresponding prism unit structure. The bulge structures have the same lengths in the extension directions of the corresponding prism unit structures, but are arranged at different intervals. The bulge structures are arranged at equal intervals in the arrangement direction of the corresponding prism unit structures. The prism structure light enhancement film is used for converging light emitted from a light source and regulating the divergence angle of the light emitted from the light source. Due to the bulge structures of the second prism unit structures, the scraping on sharp corner angles in the assembling process of a membrane can be avoided in the actual application and the prism structure light enhancement film has a scraping resistance function.
Description
Technical field
The invention discloses a kind of bright enhancement film, particularly about a kind of be applied to LCD (liquid crystal display, LCD) have an anti-prism structure bright enhancement film of characteristic of scraping.
Background technology
At present, bright enhancement film (BEF) is widely used in illuminating module and often uses the energy that bright enhancement film (BEF) increases display brightness and saving display battery apparatus in the display devices such as the light that light source is sent, especially monitor to be used for converging.The principle of bright enhancement film is through refraction and reflection the light outside the directive observer visual angle to be adjusted within the observer visual angle, has so just improved the utilization factor of luminous energy that light source sends.
Common bright enhancement film (BEF) is to constitute in order to the prism bar that converges light by many, and these prism bar are arranged according to a direction, form a prism array, and are as shown in Figure 1.Conventional prism structure bright enhancement film in practical application is owing to can be used with other bloomings, and the sharp corners to prism structure causes scratch easily, thereby influences optical quality.In order to address this problem; U.S. Pat 7142767 discloses a kind of anti-brightness enhancement film of scraping function that has; Its structure is the prism columns of fillet or platform in traditional brightness enhancement film prism array, increasing some tops; These prism heights are higher than its peripheral ordinary construction prism columns, thereby can play the anti-effect that scratches.Yet this kind structure can cause the decline of optical gain values because cancellation wedge angle in whole prism columns top changes fillet or platform structure into.Therefore, must improve existing prism structure bright enhancement film in order to address the above problem.
Summary of the invention
The object of the invention provides a kind ofly has the anti-prism structure bright enhancement film of scraping characteristic in order to converging the light that sends from light source, passes the dispersion angle behind this bright enhancement film with adjustment from the light source emitted light, and improves illuminating module and produce yield.
Concrete technical scheme is:
A kind of have an anti-prism structure bright enhancement film of characteristic of scraping; Comprise base material and prism structure layer; Said prism structure layer is positioned on the said base material; This prism structure layer is lined up array by several prism unit structures by same direction, and said prism unit structure comprises several first prism unit structures and several second prism unit structures; The second prism unit structure has some discontinuous bulge-structures on the direction of extension of prism unit structure; Said bulge-structure has identical length L 1 in prism unit construction stretch direction, and it is inequality or incomplete same at the interval L2 of prism unit construction stretch direction to be positioned at the structural bulge-structure of same prism unit; Said bulge-structure has identical distance L3 in prism unit structural arrangement direction.
Wherein, the bulge-structure of the said second prism unit structure in the length L 1 of prism unit construction stretch direction between 50 μ m～500mm.
Wherein, on prism unit construction stretch direction, the interval L2 of any two adjacent bulge-structures is between 100 μ m～500mm on the same second prism unit structure.
Wherein, the said second prism unit structure has identical distance L3 in prism unit structural arrangement direction, on the prism arrangement direction, whenever at a distance from 1～50 first prism unit structure one second prism unit structure is set promptly.
Wherein, the xsect of the described first prism unit structure is an isosceles triangle, and the drift angle angle is 60 °～120 °, highly is H1, and H1 is between 10 μ m～100 μ m.
Wherein, The described second prism unit structure at non-bossing xsect is and the identical isosceles triangle of the said first prism unit structure xsect; Its bulge-structure height is H2, and H2 is 1.05～1.5 times of the said first prism unit structure cross-sectional height H1.
Wherein, the bulge-structure place xsect of the described second prism unit structure is that drift angle is the isosceles triangle of fillet, and said drift angle radius of corner is between 0.5～2 μ m.
Wherein, the bulge-structure place xsect of the described second prism unit structure is an isosceles trapezoid, and its upper base edge lengths is 0.03～0.2 times of bottom length.
Wherein, said base material has the first relative optical surface and second optical surface, said prism structure layer be positioned on first optical surface and the bottom surface relative with second optical surface.
Wherein, Said base material is selected from a kind of in polyethylene terephthalate (PET) and the polymethylmethacrylate (PMMA); The material of said prism structure layer is a UV-cured resin, is selected from a kind of in epoxy acrylic resin, aminoacrylic acid resin, polyvinyl resin, polyurethane acrylic resin, the polyester acrylic resin.
The LCD that comprises described prism structure bright enhancement film.
Beneficial effect of the present invention is, because the bulge-structure of the second prism unit structure to the scratch of sharp corners, plays anti-function of scraping in the time of can in practical application, avoiding the diaphragm assembling.In addition, because bulge-structure only accounts for the second prism unit structure division ratio, remainder is sharp-pointed angular structures still, and with respect to prior art, the present invention has higher optical gain performance.
Description of drawings
Fig. 1 is the perspective view of conventional prism structure bright enhancement film.
Fig. 2 is a prism structure bright enhancement film perspective view in the embodiment of the invention 1.Wherein, the 100th, anti-structure bright enhancement film, the 102nd, the base material scraped; The 108th, the prism structure layer, 106 is first optical surfaces, 104 is second optical surfaces; 110B is the direction of extension of prism unit structure; 110A is the orientation of prism unit structure, and 112A is the first prism unit structure, and 112B is the second prism unit structure.
Fig. 3 A is a prism structure bright enhancement film front view in the embodiment of the invention 1.Wherein, 112A is the first prism unit structure; 112B is the second prism unit structure, and H1 is the height of the first prism unit structure, and H2 is the height of the bulge-structure of the second prism unit structure; R is the bulge-structure xsect of the second prism unit structure when being dome angle isosceles right triangle, the radius of fillet drift angle.
Fig. 3 B is a prism structure bright enhancement film vertical view in the embodiment of the invention 1.Wherein, L1 is the length of the second prism unit structure raising structure, and L2 is the interval of two adjacent bulge-structures on the second prism unit construction stretch direction.
Fig. 4 is the embodiment of the invention 1 prism structure brightness enhancement film and common prism structure brightness enhancement film optical gain and angle of visibility comparison diagram.
Fig. 5 is a prism structure bright enhancement film perspective view in the embodiment of the invention 2.Wherein, the 100th, anti-structure bright enhancement film, the 102nd, the base material scraped; The 108th, the prism structure layer, 106 is first optical surfaces, 104 is second optical surfaces; 110B is the direction of extension of prism unit structure; 110A is the orientation of prism unit structure, and 112A is the first prism unit structure, and 112B is the second prism unit structure.
Fig. 6 is a prism structure bright enhancement film front view in the embodiment of the invention 2.Wherein, H1 is the height of the first prism unit structure, and H3 is the height of the bulge-structure of the second prism unit structure, and d is the bulge-structure xsect of the second prism unit structure when being isosceles trapezoid, the upper base length of isosceles trapezoid.
Fig. 7 is a prism structure bright enhancement film vertical view in the embodiment of the invention 2.Wherein, L1 is the length of the second prism unit structure raising structure, and L2 is the interval of two adjacent bulge-structures of the second prism unit structure.
Fig. 8 is the embodiment of the invention 2 prism structure brightness enhancement film and common prism structure brightness enhancement film optical gain and angle of visibility comparison diagram.
Embodiment
Embodiment 1
Synoptic diagram is Fig. 2.Have the anti-prism structure bright enhancement film 100 of scraping characteristic and include a base material 102, one prism structure layers 108.Base material 102 has one first optical surface 106 and one and is positioned at aspectant second optical surface 104 of first optics.Prism structure layer 108 is arranged on first optical surface 106, and this prism structure layer 108 is lined up array by a plurality of first prism unit structure 112A and the second prism unit structure 112B by direction 110A and constituted, and prism unit construction stretch direction is 110B.
Said base material 102 materials are polyethylene terephthalates, and the material of said prism structure layer 108 is polyurethane acrylic resins of uV curable.
The preparation method of said brightness enhancement film is: coating polyethylene resin bed on base material 102 first optical surfaces 106; With having the polyurethane acrylic resin of uV curable is carried out press mold with the mold wheel of the microstructure complementary structure of prism structure layer 108; Can make resin bed form required microstructure; Use UV-irradiation subsequently again, the UV-cured resin layer that forms microstructure is solidified, thereby prism structure layer 108 is arranged on first optical surface 106 of base material 102.
Fig. 3 A shows that first its xsect of prism unit structure 112A is an isosceles right triangle in the prism structure layer 108, and height H 1 is 25 μ m.Have some bulge-structures on the direction of extension of the second prism unit structure 112B; The second prism unit structure 112B xsect at non-bossing is and the identical isosceles right triangle of the first prism unit structure 112A xsect; Highly also be H1; Bulge-structure height H 2 is 27 μ m, and bulge-structure place xsect is that drift angle is the isosceles right triangle of fillet, and radius of corner R is 1 μ m.On prism unit structural arrangement direction, whenever one second prism unit structure 112B promptly is set at a distance from 3 first prism unit structure 112A.
Fig. 3 B is the vertical view of prism structure layer; It shows that it is 100 μ m that the second prism unit structure 112B relief structure has identical length L 1 in the prism direction of extension; On the prism direction of extension any two adjacent bulge-structures be spaced apart L2, L2 is between 100 μ m～500mm.Bulge-structure is on prism unit structural arrangement direction, and every is that distance L 3 is provided with one second prism unit structure at a distance from 6 first prism unit structures.
Some bulge-structures among the second prism structure 112B can effectively prevent in the illuminating module production run injury of scratching the sharp-pointed drift angle of the first prism unit structure is caused because of friction with other diaphragms, thereby ensure the production yield of illuminating module; In addition, still comprise the non-bulge-structure of part among the second prism unit structure 112B, this part is and the identical sharp-pointed structure of the first prism unit structure 112A, can avoids the reduction of optical gain.
Fig. 4 shows the optical gain performance of the brightness enhancement film among the embodiment 1.Wherein the metering system of briliancy distribution curve is: with the planar light source of a uniformly light-emitting as measurement light source; To test diaphragm is covered on the light source; Use brightness photometer perpendicular alignmnet diaphragm central authorities, define test angle this moment is 0 °, is the center of circle with diaphragm central authorities then; Brightness photometer is distributed in level and several angles of vertical direction rotation, records a series of data and constitute the briliancy scatter chart.It is defined as horizontal direction along the prism unit direction of extension, is defined as vertical direction along the prism arrangement direction; Luminance gain is defined as 1 during no diaphragm.
Can know by Fig. 4; The present invention's brightness enhancement film luminance gain does not have obvious decline than traditional structure; And visible angle does not have significant change, takes all factors into consideration the anti-characteristic of scraping of brightness enhancement film according to the invention again, but the brightness enhancement film of knowledge capital invention all has higher advantage aspect optical appearance and the assembly technology.
Embodiment 2
Synoptic diagram is Fig. 5, Fig. 6, Fig. 7.Among the embodiment 2, the xsect of the first prism unit structure 112A is an isosceles right triangle, and height H 1 is 25 μ m.The second prism unit structure bulge-structure xsect is that the base angle is the isosceles trapezoid of 45 degree, and trapezoidal height H 3 is 28 μ m, and the upper base length d is 2 μ m, and is as shown in Figure 6.The material of base material 102 is polymethylmethacrylates, and the material of said prism structure layer 108 is epoxy acrylic resins of uV curable.
Fig. 8 shows the optical gain performance of the brightness enhancement film among the embodiment 2.
The preparation method of said brightness enhancement film is: coating ultraviolet light curing resin epoxy acrylic resin on base material 102 first optical surfaces 106; Mold wheel with having with the microstructure complementary structure of prism structure layer 108 is carried out press mold to UV-cured resin; Can make the UV-cured resin layer form required microstructure; Use UV-irradiation subsequently again; The UV-cured resin layer that forms microstructure is solidified, thereby prism structure layer 108 is arranged on first optical surface 106 of base material 102, the cross sectional shape of the bulge-structure of its second prism unit structure is an isosceles trapezoid.It is 100 μ m that bulge-structure has identical length L 1 in prism unit construction stretch direction, on direction of extension any two adjacent bulge-structures be spaced apart L2, L2 is between 100 μ m～500mm.Bulge-structure whenever promptly is provided with one second prism unit structure at a distance from 3 first prism unit structures on prism unit structural arrangement direction.
Though the present invention sets forth as above with preferred embodiment; Right its is not in order to limit the present invention; Has common knowledge the knowledgeable in the technical field under the present invention; In spirit that does not break away from the present invention and scope, can do various changes and modification, so the claim scope person of defining that protection scope of the present invention is attached is as the criterion after looking.
Claims (11)
1. one kind has the anti-prism structure bright enhancement film of characteristic of scraping; Comprise base material and prism structure layer; Said prism structure layer is positioned on the said base material; This prism structure layer is lined up array by several prism unit structures by same direction, and said prism unit structure comprises several first prism unit structures and several second prism unit structures; The second prism unit structure has some discontinuous bulge-structures on the direction of extension of prism unit structure; Said bulge-structure has identical length L 1 in prism unit construction stretch direction, and it is inequality or incomplete same at the interval L2 of prism unit construction stretch direction to be positioned at the structural bulge-structure of same prism unit; Said bulge-structure has identical distance L3 in prism unit structural arrangement direction.
According to claim 1 said have anti-scrape the prism structure bright enhancement film of characteristic, it is characterized in that, the bulge-structure of the said second prism unit structure in the length L 1 of prism unit construction stretch direction between 50 μ m～500mm.
3. has an anti-prism structure bright enhancement film of characteristic of scraping according to claim 1 is said; It is characterized in that; On prism unit construction stretch direction, the interval L2 of any two adjacent bulge-structures is between 100 μ m～500mm on the same said second prism unit structure.
4. has an anti-prism structure bright enhancement film of characteristic of scraping according to claim 1 is said; It is characterized in that; The said second prism unit structure has identical distance L3 in prism unit structural arrangement direction; On the prism arrangement direction, whenever one second prism unit structure promptly is set at a distance from 1～50 first prism unit structure.
According to claim 1 said have anti-scrape the prism structure bright enhancement film of characteristic, it is characterized in that the xsect of the described first prism unit structure is an isosceles triangle, the drift angle angle is 60 °～120 °, highly is H1, H1 is between 10 μ m～100 μ m.
6. according to the arbitrary said anti-prism structure bright enhancement film of characteristic of scraping that has of claim 1～5; It is characterized in that; The described second prism unit structure at non-bossing xsect is and the identical isosceles triangle of the said first prism unit structure xsect; Its bulge-structure height is H2, and H2 is 1.05～1.5 times of the said first prism unit structure cross-sectional height H1.
7. according to the arbitrary said anti-prism structure bright enhancement film of characteristic of scraping that has of claim 1～5; It is characterized in that; The bulge-structure place xsect of the described second prism unit structure is that drift angle is the isosceles triangle of fillet, and said drift angle radius of corner is between 0.5～2 μ m.
According to claim 1～5 arbitrary said have anti-scrape the prism structure bright enhancement film of characteristic, it is characterized in that the bulge-structure place xsect of the described second prism unit structure is an isosceles trapezoid, its upper base edge lengths is 0.03～0.2 times of bottom length.
9. according to the arbitrary said anti-prism structure bright enhancement film of characteristic of scraping that has of claim 1～5; It is characterized in that; Said base material has the first relative optical surface and second optical surface, said prism structure layer be positioned on first optical surface and the bottom surface relative with second optical surface.
10. according to the arbitrary said anti-prism structure bright enhancement film of characteristic of scraping that has of claim 1～5; It is characterized in that; Said base material is selected from a kind of in polyethylene terephthalate and the polymethylmethacrylate; The material of said prism structure layer is a UV-cured resin, is selected from a kind of in epoxy acrylic resin, aminoacrylic acid resin, polyvinyl resin, polyurethane acrylic resin, the polyester acrylic resin.
11. comprise the LCD of the arbitrary described prism structure bright enhancement film of claim 1～10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104336910A CN102540293A (en) | 2011-12-21 | 2011-12-21 | Prism structure light enhancement film with scraping resistance characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104336910A CN102540293A (en) | 2011-12-21 | 2011-12-21 | Prism structure light enhancement film with scraping resistance characteristic |
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| CN102540293A true CN102540293A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104336910A Pending CN102540293A (en) | 2011-12-21 | 2011-12-21 | Prism structure light enhancement film with scraping resistance characteristic |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196585A (en) * | 2006-12-05 | 2008-06-11 | 迎辉科技股份有限公司 | Bent prism light-gathering sheet with cushion layer |
| JP2009122440A (en) * | 2007-11-15 | 2009-06-04 | Idemitsu Unitech Co Ltd | Prism member and optical member |
| JP2010020056A (en) * | 2008-07-10 | 2010-01-28 | Goyo Paper Working Co Ltd | Abrasion-proof lens sheet |
| TW201100870A (en) * | 2009-06-19 | 2011-01-01 | Yaw-Huei Tsai | Manufacturing methods for an diffusion brightness enhancement optical film and backlight module utilizing the optical film |
| KR20110033052A (en) * | 2009-09-23 | 2011-03-30 | 신화인터텍 주식회사 | Prism Sheet and Backlight Assembly Having Same |
| CN102236122A (en) * | 2010-04-30 | 2011-11-09 | 中强光电股份有限公司 | Optical film |
-
2011
- 2011-12-21 CN CN2011104336910A patent/CN102540293A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196585A (en) * | 2006-12-05 | 2008-06-11 | 迎辉科技股份有限公司 | Bent prism light-gathering sheet with cushion layer |
| JP2009122440A (en) * | 2007-11-15 | 2009-06-04 | Idemitsu Unitech Co Ltd | Prism member and optical member |
| JP2010020056A (en) * | 2008-07-10 | 2010-01-28 | Goyo Paper Working Co Ltd | Abrasion-proof lens sheet |
| TW201100870A (en) * | 2009-06-19 | 2011-01-01 | Yaw-Huei Tsai | Manufacturing methods for an diffusion brightness enhancement optical film and backlight module utilizing the optical film |
| KR20110033052A (en) * | 2009-09-23 | 2011-03-30 | 신화인터텍 주식회사 | Prism Sheet and Backlight Assembly Having Same |
| CN102236122A (en) * | 2010-04-30 | 2011-11-09 | 中强光电股份有限公司 | Optical film |
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Application publication date: 20120704 |