CN204228987U - A kind of optically focused brightness enhancement film - Google Patents
A kind of optically focused brightness enhancement film Download PDFInfo
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- CN204228987U CN204228987U CN201420676684.2U CN201420676684U CN204228987U CN 204228987 U CN204228987 U CN 204228987U CN 201420676684 U CN201420676684 U CN 201420676684U CN 204228987 U CN204228987 U CN 204228987U
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Abstract
The utility model relates to Vikuiti field, be specifically related to a kind of optically focused brightness enhancement film, comprise transparent base and the concentration structure layer being arranged at transparent base upper surface, concentration structure layer comprises the first prism group and the second prism, first prism group and the interspersed setting of the second prism, first prism group is made up of 2-5 the first prism, and the height height 1.5-4 μm of aspect ratio first prism of the second prism, described first prism and described second prism are all horizontally disposed with along its length mutually.Light source is after optically focused brightness enhancement film of the present utility model effect, and wide-angle emergent ray can again be recycled after the second prism structure effect, thus improves energy of light source utilization factor, and compare the brightness enhancement film of traditional structure, its gain effect can improve 5%-10%.Optically focused brightness enhancement film of the present utility model can provide best brightening effect, increases light injection diffuse reflecting distribution simultaneously, thus reduces the surface gloss of condensing film.
Description
Technical field
The utility model relates to Vikuiti field, is specifically related to a kind of optically focused brightness enhancement film.
Background technology
The backlight module of general liquid crystal display (LCD), usually comprise: a light source, light guide plate, be arranged on above light source is arranged on the lower diffusion sheet above light guide plate, lower diffusion sheet is provided with lower brightness enhancement film and upper brightness enhancement film, general upper and lower brightness enhancement film difference is that on upper brightness enhancement film base material, do one deck has diffusion UV process.
Brightness enhancement film is used to the brightness increasing backlighting panel displays in many electronic products, and described backlighting panel displays is as liquid crystal display (LCD).Brightness enhancement film advantageously shows specific optics and physical property, and these performances comprise the brightness enhancement film refractive index relevant with produced luminance gain (i.e. " gain ").Brightness enhancing films is provided with parallel prism groove, lenticular shape groove or Pyramid on the light emitting surface of film, this structure can change the angle by film/air interface when light leaves film, make oblique incident ray, can redistribute on the direction of the light gasing surface perpendicular to film, thus make more light can perpendicular to film light output face.Brightness enhancing films has level and smooth light entrance face, through face thus, light is entered by backlight module.So far, many application uses two the brightness enhancing films layers being in cross reference, is therefore be 90 degrees to each other angle at the groove of respective thin layer.
Upper and lower brightness enhancement film, while providing brightening effect, still has part high angle scattered light not to be utilized effectively, and this some light quantity accounts for overall light more than 5%, which has limited the lifting of brightness enhancement film brightening effect.In addition, when light is from upper brightness enhancement film outgoing, light can too concentrate on positive apparent direction, and mirror effect obviously affects vision.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, the purpose of this utility model is to provide a kind of optically focused brightness enhancement film, this optically focused brightness enhancement film can provide best brightening effect, increases light injection diffuse reflecting distribution simultaneously, thus reduces the surface gloss of brightness enhancement film.
The purpose of this utility model is achieved through the following technical solutions: a kind of optically focused brightness enhancement film, comprise transparent base and the concentration structure layer being arranged at transparent base upper surface, concentration structure layer comprises the first prism group and the second prism, first prism group and the interspersed setting of the second prism, first prism group is made up of 2-5 the first prism, the height height 1.5-4 μm of aspect ratio first prism of the second prism, described first prism and described second prism are all horizontally disposed with along its length mutually.
Further, the xsect of described first prism and described second prism is isosceles triangle, and the corner angle of isosceles triangle is 85 °-95 °.
Further, the drift angle of described first prism is tip-angled shape or arc-shaped, and the arc radius of arc-shaped drift angle is 3-8 μm.
Further, the drift angle of described second prism is tip-angled shape or arc-shaped, and the arc radius of arc-shaped drift angle is 3-8 μm.
Further, described transparent base is PET film layer, PMMA film layer or PC rete, and its thickness is 30-150 μm.
Further, described concentration structure layer is for having the acrylic polymer layer of high index of refraction.
Further, the lower surface of described transparent base is provided with high refraction Diffusion barrier layer, and its thickness is 3-7 μm.
Further, the arc radius of described arc-shaped drift angle is 3-8 μm.
Further, described first prism and described second prism spaced set.
Further, the width between at the bottom of described first prism adjacent valleys is 30-35 μm, and the height of the first prism is 15-22 μm.
Further, described second prism columns primer spacing is 35-40 μm.
The beneficial effects of the utility model are: light source is after optically focused brightness enhancement film of the present utility model effect, wide-angle emergent ray can again be recycled after the second prism structure effect, thus improve energy of light source utilization factor, compare the brightness enhancement film of traditional structure, its gain effect can improve 5%-10%; Simultaneously on the basis of improving gain effect, at the first prism structure top application arc structure, effectively can increase light injection diffuse reflecting distribution, reduce the surface gloss of brightness enhancement film, the basis that optimum gain effect is provided provides good visual effect simultaneously.
Optically focused brightness enhancement film of the present utility model can provide best brightening effect, increases light injection diffuse reflecting distribution simultaneously, thus reduces the surface gloss of condensing film.
Accompanying drawing explanation
Fig. 1 is perspective view when first prism group is made up of 2 the first prisms described in the utility model embodiment one.
Fig. 2 is perspective view when first prism group is made up of 5 the first prisms described in the utility model embodiment one.
Fig. 3 is structural representation when first prism group is made up of 2 the first prisms described in the utility model embodiment two.
Fig. 4 is perspective view when first prism group is made up of 2 the first prisms described in the utility model embodiment two.
Fig. 5 is structural representation when first prism group is made up of 5 the first prisms described in the utility model embodiment two.
Fig. 6 is perspective view when first prism group is made up of 5 the first prisms described in the utility model embodiment two.
Fig. 7 is the blast principle schematic of traditional brightness enhancement film.
Fig. 8 is blast principle schematic when first prism group is made up of 2 the first prisms described in the utility model embodiment two.
Reference numeral is: 1-transparent base, the 21-the first prism, the 22-the second prism, 3-high refraction Diffusion barrier layer.
Embodiment
For the ease of the understanding of those skilled in the art, be further described the utility model below in conjunction with embodiment and accompanying drawing 1-8, the content that embodiment is mentioned is not to restriction of the present utility model.
Be the embodiment one of a kind of optically focused brightness enhancement film described in the utility model as shown in Figure 1-2, comprise transparent base 1 and the concentration structure layer being arranged at transparent base 1 upper surface, concentration structure layer comprises the first prism group and the second prism 22, first prism group and the interspersed setting of the second prism 22, first prism group is made up of 2-5 the first prism 21, the height d7 of the second prism 22 is than the height d6 height 1.5-4 μm of the first prism 21, and described first prism 21 and described second prism 22 are all horizontally disposed with along its length mutually.For making the utility model reach best result of use, the height d7 of the second prism 22 is higher than the height d6 of the first prism 21 2 μm.The spotlight effect of difference in height d4 to brightness enhancement film of described second prism 22 and the first prism 21 has a great impact, when the difference in height d4 of the second prism 22 and the first prism 21 does not reach good spotlight effect lower than when 1.5 μm; The utility model is by controlling at 1.5-4 μm by the difference in height d4 of the second prism 22 and the first prism 21, and the spotlight effect of brightness enhancement film is good.
Light source is after optically focused brightness enhancement film of the present utility model effect, wide-angle emergent ray can again be recycled after the second prism 22 structure function, thus improve energy of light source utilization factor, compare the brightness enhancement film of traditional structure, its gain effect can improve 5%-10%.
In the present embodiment, the xsect of described first prism 21 and described second prism 22 is isosceles triangle, and the corner angle α of isosceles triangle is 85 °-95 °.Adopt isosceles structural designs, the symmetry of prism to light-ray condensing and reflection can be improved further, improve the display effect of display module.For making the utility model reach best result of use, the corner angle α of described isosceles triangle is 90 °.
Optically focused brightness enhancement film of the present utility model can provide best brightening effect, increases light injection diffuse reflecting distribution simultaneously, thus reduces the surface gloss of condensing film.
In the present embodiment, described transparent base 1 is PET film layer, PMMA film layer or PC rete, and its thickness d 5 is 30-150 μm.For making the utility model reach best result of use, the thickness d 5 of described transparent base 1 is 50 μm.
In the present embodiment, described concentration structure layer is for having the acrylic polymer layer of high index of refraction.Concentration structure layer by there is the acrylic polymers of high index of refraction through being carved with the roller contact printing of prism pattern, ultra-violet curing.
In the present embodiment, the lower surface of described transparent base 1 is provided with high refraction Diffusion barrier layer 3, and its thickness d 1 is 3-7 μm.Described height refraction Diffusion barrier layer 3 is the compounds formed by least one in silicon dioxide, aluminium oxide, calcium carbonate and glass dust and acrylic acid.For making the utility model reach best result of use, the thickness d 1 of described height refraction Diffusion barrier layer 3 is 5 μm.
In the present embodiment, described first prism 21 and described second prism 22 spaced set.
In the present embodiment, the width d3 between at the bottom of described first prism 21 adjacent valleys is 30-35 μm, and the height d6 of the first prism 21 is 15-22 μm.For making the utility model reach best result of use, the width d3 between at the bottom of described first prism 21 adjacent valleys is 32 μm, and the height d6 of the first prism 21 is 16 μm.
In the present embodiment, described second prism 22 post primer spacing d2 is 35-40 μm.For making the utility model reach best result of use, described second prism 22 post primer spacing d2 is 36 μm.
Be the embodiment two of a kind of optically focused brightness enhancement film described in the utility model as shown in figures 3-8, be with the difference of above-described embodiment one: the drift angle of described first prism 21 is tip-angled shape or arc-shaped, the arc radius of arc-shaped drift angle is 3-8 μm.On the basis of improving gain effect, at the first prism 21 structure top end application arc structure, effectively can increase light injection diffuse reflecting distribution, reduce the surface gloss of brightness enhancement film, the basis that optimum gain effect is provided provides good visual effect simultaneously.For making the utility model reach best result of use, the arc radius of described arc-shaped drift angle is 6 μm.
Be illustrated in figure 7 the blast principle schematic of traditional brightness enhancement film, light forms scattering light source a via after diffusion barrier particle scattering, scattering light source light is when prism structure, the light of Four types can be formed, respectively: low-angle emergent ray b, to recycle light c through another prism structure, recycle light d and wide-angle emergent ray e through prism inwall, wherein, light b is desirable emergent ray, c and d is for recycling light, e is imperfect emergent ray, and the existence of light e weakens the gain effect of brightness enhancement film.
Be illustrated in figure 8 the blast principle schematic of optically focused brightness enhancement film of the present utility model, second prism of special prism structures effectively can change the shooting angle of light e, light e can be recycled, thus improve the gain effect of brightness enhancement film, compare the brightness enhancement film of traditional structure, gain effect of the present invention can improve 5%-10%.
Of the present utility model another preferably embodiment be: the drift angle of described second prism 22 is tip-angled shape or arc-shaped, and the arc radius of arc-shaped drift angle is 3-8 μm.Drift angle is that the structural design of arc-shaped can provide best brightening effect, increases light injection diffuse reflecting distribution simultaneously, thus reduces the surface gloss of brightness enhancement film.For making the utility model reach best result of use, the arc radius of described arc-shaped drift angle is 6 μm.
Above-described embodiment is the utility model preferably implementation, and in addition, the utility model can also realize by alternate manner, and any apparent replacement is all within protection domain of the present utility model without departing from the concept of the premise utility.
Claims (10)
1. an optically focused brightness enhancement film, it is characterized in that: comprise transparent base and the concentration structure layer being arranged at transparent base upper surface, concentration structure layer comprises the first prism group and the second prism, first prism group and the interspersed setting of the second prism, first prism group is made up of 2-5 the first prism, the height height 1.5-4 μm of aspect ratio first prism of the second prism, described first prism and described second prism are all horizontally disposed with along its length mutually.
2. a kind of optically focused brightness enhancement film according to claim 1, is characterized in that: the xsect of described first prism and described second prism is isosceles triangle, the corner angle of isosceles triangle is 85 °-95 °.
3. a kind of optically focused brightness enhancement film according to claim 1, is characterized in that: the drift angle of described first prism is tip-angled shape or arc-shaped, and the arc radius of arc-shaped drift angle is 3-8 μm.
4. a kind of optically focused brightness enhancement film according to claim 1, is characterized in that: the drift angle of described second prism is tip-angled shape or arc-shaped, and the arc radius of arc-shaped drift angle is 3-8 μm.
5. a kind of optically focused brightness enhancement film according to claim 1, is characterized in that: described transparent base is PET film layer, PMMA film layer or PC rete, and its thickness is 30-150 μm.
6. a kind of optically focused brightness enhancement film according to claim 1, is characterized in that: described concentration structure layer is for having the acrylic polymer layer of high index of refraction.
7. a kind of optically focused brightness enhancement film according to claim 1, is characterized in that: the lower surface of described transparent base is provided with high refraction Diffusion barrier layer, and its thickness is 3-7 μm.
8. a kind of optically focused brightness enhancement film according to claim 1, is characterized in that: described first prism and described second prism spaced set.
9. a kind of optically focused brightness enhancement film according to claim 1, is characterized in that: the width between at the bottom of described first prism adjacent valleys is 30-35 μm, and the height of the first prism is 15-22 μm.
10. a kind of optically focused brightness enhancement film according to claim 1, is characterized in that: described second prism columns primer spacing is 35-40 μm.
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| CN201420676684.2U CN204228987U (en) | 2014-11-13 | 2014-11-13 | A kind of optically focused brightness enhancement film |
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| CN201420676684.2U CN204228987U (en) | 2014-11-13 | 2014-11-13 | A kind of optically focused brightness enhancement film |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044807A (en) * | 2015-08-05 | 2015-11-11 | 苏州华徕光电仪器有限公司 | High-reflection-performance surveying and mapping prism |
| CN105404045A (en) * | 2015-12-02 | 2016-03-16 | 东莞市纳利光学材料有限公司 | Anti-electromagnetic wave brightening film and preparation method thereof |
| CN105867005A (en) * | 2015-12-02 | 2016-08-17 | 东莞市纳利光学材料有限公司 | A brightness enhancement film with an anti-electromagnetic wave effect and a method for preparing the same |
| CN106680914A (en) * | 2015-11-06 | 2017-05-17 | 宁波长阳科技股份有限公司 | Composite brightness enhancement film and manufacturing method thereof |
| CN109085670A (en) * | 2018-09-11 | 2018-12-25 | 惠州市创亿达新材料有限公司 | High light diffusion feature board of high fog and preparation method thereof |
| CN109407405A (en) * | 2018-12-21 | 2019-03-01 | 厦门天马微电子有限公司 | Backlight module and display device |
| WO2019144698A1 (en) * | 2018-01-29 | 2019-08-01 | 京东方科技集团股份有限公司 | Prism sheet, backlight module and display device |
| CN113985655A (en) * | 2021-10-22 | 2022-01-28 | 珠海市科弥光电有限公司 | Backlight module for television based on optical composite film |
| WO2023273915A1 (en) * | 2021-06-30 | 2023-01-05 | 纳晶科技股份有限公司 | Brightness enhancement film and display apparatus |
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2014
- 2014-11-13 CN CN201420676684.2U patent/CN204228987U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044807A (en) * | 2015-08-05 | 2015-11-11 | 苏州华徕光电仪器有限公司 | High-reflection-performance surveying and mapping prism |
| CN105044807B (en) * | 2015-08-05 | 2018-03-20 | 苏州华徕光电仪器有限公司 | High reflectivity can survey and draw prism |
| CN106680914A (en) * | 2015-11-06 | 2017-05-17 | 宁波长阳科技股份有限公司 | Composite brightness enhancement film and manufacturing method thereof |
| CN105404045A (en) * | 2015-12-02 | 2016-03-16 | 东莞市纳利光学材料有限公司 | Anti-electromagnetic wave brightening film and preparation method thereof |
| CN105867005A (en) * | 2015-12-02 | 2016-08-17 | 东莞市纳利光学材料有限公司 | A brightness enhancement film with an anti-electromagnetic wave effect and a method for preparing the same |
| WO2019144698A1 (en) * | 2018-01-29 | 2019-08-01 | 京东方科技集团股份有限公司 | Prism sheet, backlight module and display device |
| US10948634B2 (en) | 2018-01-29 | 2021-03-16 | Beijing Boe Display Technology Co., Ltd. | Prism sheet, backlight module and display device |
| CN109085670A (en) * | 2018-09-11 | 2018-12-25 | 惠州市创亿达新材料有限公司 | High light diffusion feature board of high fog and preparation method thereof |
| CN109407405A (en) * | 2018-12-21 | 2019-03-01 | 厦门天马微电子有限公司 | Backlight module and display device |
| WO2023273915A1 (en) * | 2021-06-30 | 2023-01-05 | 纳晶科技股份有限公司 | Brightness enhancement film and display apparatus |
| CN113985655A (en) * | 2021-10-22 | 2022-01-28 | 珠海市科弥光电有限公司 | Backlight module for television based on optical composite film |
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Effective date of registration: 20230802 Address after: Room 1, Room 1408, 14th Floor, Building 1, Zhongliang Chuangxin R&D Center, Xingdong Community, Xin'an Street, Bao'an District, Shenzhen City, Guangdong Province, 518108 Patentee after: Shenzhen Nali Space Technology Co.,Ltd. Address before: 523000 6 HUAYU street, Changlong village, Huang Jiang Town, Dongguan, Guangdong Patentee before: NALI OPTICAL MATERIAL (DONGGUAN) Co.,Ltd. |
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