CN103823261A - Bright enhancement film - Google Patents
Bright enhancement film Download PDFInfo
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- CN103823261A CN103823261A CN201410084911.7A CN201410084911A CN103823261A CN 103823261 A CN103823261 A CN 103823261A CN 201410084911 A CN201410084911 A CN 201410084911A CN 103823261 A CN103823261 A CN 103823261A
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- enhancement film
- brightness enhancement
- triangular prism
- bright enhancement
- light collecting
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Abstract
The invention discloses a bright enhancement film which comprises a base material layer and a condensation layer, wherein concave-convex structures are formed in the surface of the condensation layer in the length direction and the width direction of the bright enhancement film. According to the refraction and reflection effects of concave-convex structures in the surface of the condensation layer in the length direction and the width direction on light rays, the convergence angle of the emergent light rays can be adjusted, so that the light rays are converged towards the direction of a user. The bright enhancement film has the light ray converging function in the horizontal and vertical direction, the functions of the conventional two bright enhancement films which are vertically arranged can be realized due to one bright enhancement film in the invention, the number of the used bright enhancement films is reduced, and the cost of a backlight module is further reduced. In addition, according to the backlight module with special requirements on the positive brightness, two bright enhancement films in the invention can be overlapped, and the bright enhancement film in the invention has higher brightness gain compared with the conventional two bright enhancement films which are vertically arranged.
Description
Technical field
The present invention relates to a kind of brightness enhancement film.
Background technology
Liquid crystal display (LCD, Liquid Crystal Display) has become the most general current display technique.Because LCD has the advantages such as environmental protection, low power consuming, low radiation, picture be soft, so LCD will be the main flow display technique in coming few decades.LCD is non-luminiferous display device, need to just can reach Presentation Function by backlight module, so the quality of backlight module performance can directly affect LCD video picture quality.The main member of backlight module comprises: light source, light guide plate, all kinds of blooming piece.
The blooming piece of backlight module mainly includes reflectance coating, brightness enhancement film, diffusion barrier.In backlight module the effect of brightness enhancement film be the light outside observer visual angle is adjusted to observer's angular field of view within, there is light-focusing function, improve the utilization factor of light.The one side of tradition brightness enhancement film has micro-lens, and compound brightness enhancement film is the coating that compound one deck has diffusion function on the basis of traditional brightness enhancement film.Its surperficial micro-lens of existing brightness enhancement film is generally triangular prism shaped, and increment effect still has much room for improvement, and generally, a backlight module needs two orthogonal brightness enhancement film.
Summary of the invention
For overcoming the above-mentioned deficiency of existing brightness enhancement film, the invention provides a kind of brightness enhancement film that there are two vertical direction simultaneously and converge light function.
The technical scheme that the present invention solves its technical matters is: a kind of brightness enhancement film, comprise substrate layer and light collecting layer, and the surface of described light collecting layer all has concaveconvex structure on the length direction of brightness enhancement film and on Width.
Further, there is the dividing plate being parallel to each other along described brightness enhancement film length direction on the surface of described light collecting layer, between adjacent dividing plate, form interlayer, thereby in described interlayer, there is row's triangular prism and form triangular prism row, the shape of each triangular prism is identical, and two triangle bottom surface and the described dividing plate of described triangular prism are integral; Thereby the triangular prism in each interlayer row is corresponding mutually, on the Width of brightness enhancement film, to form triangular prism capable.
Further, the upper corner angle of described triangular prism are wedge angle or arc chord angle.
Another forms the concrete mode of concaveconvex structure on the length direction of brightness enhancement film and on Width: the surface of described light collecting layer has the low groove of positive truncated rectangular pyramids shape, and the medial surface of described low groove slopes inwardly;
The boss that the bottom surface of described low groove raises up positive truncated rectangular pyramids shape, four sides of described boss slope inwardly;
The upper surface of described boss has to the central recess of recessed positive truncated rectangular pyramids shape, and the medial surface of described central recess slopes inwardly and this central recess and described low groove share bottom surface;
The spur that the bottom surface of described central recess raises up positive rectangular pyramid shape.
In use, when light enters after brightness enhancement film, in the concaveconvex structure of length direction, a part of light reflects in concaveconvex structure side, thereby appears brightness enhancement film in the present invention; A part light can there is total reflection, and reflection ray in backlight module by reflecting and be recycled again.Same, in the concaveconvex structure of length direction, a part of light reflects in concaveconvex structure side, thereby appears brightness enhancement film; A part light can there is total reflection, and reflection ray in backlight module by reflecting and be recycled again.
Beneficial effect of the present invention is: refraction and the reflex of the concaveconvex structure of the surface by light collecting layer in the longitudinal direction and on Width to light, can adjust the convergence angle of emergent ray, and light is converged towards user's direction.Brightness enhancement film of the present invention has horizontal and vertical direction simultaneously and converges light function, and a slice brightness enhancement film of the present invention can realize existing two vertical functions of placing brightness enhancement film, reduces the use number of brightness enhancement film, and then reduces the cost of backlight module.In addition, there is the backlight module of specific (special) requirements for front face brightness, can use brightness enhancement film of the present invention two to stack, there is higher luminance gain than existing two vertical brightness enhancement film of placing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the brightness enhancement film of embodiment mono-.
Fig. 2 is the structural representation of the brightness enhancement film of embodiment bis-.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment mono-
A kind of brightness enhancement film, comprises substrate layer 1 and light collecting layer 2, and the surface of described light collecting layer 2 all has concaveconvex structure on the length direction of brightness enhancement film and on Width.In the present embodiment, this concaveconvex structure is specially: have the dividing plate being parallel to each other 3 along described brightness enhancement film length direction on the surface of described light collecting layer 2, between adjacent dividing plate 3, form interlayer, thereby in described interlayer, there is row's triangular prism 4 and form triangular prism row, the shape of each triangular prism 4 is identical, and two triangle bottom surface and the described dividing plate 3 of described triangular prism 4 are integral; Thereby the triangular prism in each interlayer row is corresponding mutually, on the Width of brightness enhancement film, to form triangular prism capable.The upper corner angle of described triangular prism 4 can be wedge angle, also can be arc chord angle.
Coating ultraviolet light curing resin bed on substrate layer 1, UV-cured resin is carried out to press mold by the mold wheel having with concaveconvex structure complementation, can make UV-cured resin layer form required concaveconvex structure, use again subsequently UV-irradiation, the UV-cured resin layer that forms microstructure is solidified, thereby concaveconvex structure layer is arranged on substrate layer.
The optional polyethylene terephthalate of substrate layer 1 (PET), polybutylene terephthalate, poly-how dioctyl phthalate glycol ester, tygon, polypropylene, polycarbonate, polynorbornene film, cyclic polyolefin film, cellulose triacetate film etc., wherein preferred polyethylene terephthalate.
Embodiment bis-
A kind of brightness enhancement film, comprises substrate layer 1 and light collecting layer 2, and the surface of described light collecting layer 2 all has concaveconvex structure on the length direction of brightness enhancement film and on Width.In the present embodiment, this concaveconvex structure is specially: the surface of described light collecting layer 2 has the low groove 5 of positive truncated rectangular pyramids shape, and the medial surface of described low groove slopes inwardly;
The boss 6 that the bottom surface of described low groove 5 raises up positive truncated rectangular pyramids shape, four sides of described boss 6 slope inwardly;
The upper surface of described boss 6 has to the central recess 7 of recessed positive truncated rectangular pyramids shape, and the medial surface of described central recess 7 slopes inwardly and this central recess 7 shares bottom surface with described low groove 5;
The spur 8 that the bottom surface of described central recess 7 raises up positive rectangular pyramid shape.
Coating ultraviolet light curing resin bed on substrate layer, UV-cured resin is carried out to press mold by the mold wheel having with concaveconvex structure complementation, can make UV-cured resin layer form required concaveconvex structure, use again subsequently UV-irradiation, the UV-cured resin layer that forms microstructure is solidified, thereby concaveconvex structure layer is arranged on substrate layer.
The optional polyethylene terephthalate of substrate layer 1 (PET), polybutylene terephthalate, poly-how dioctyl phthalate glycol ester, tygon, polypropylene, polycarbonate, polynorbornene film, cyclic polyolefin film, cellulose triacetate film etc., wherein preferred polyethylene terephthalate.
Claims (4)
1. a brightness enhancement film, comprises substrate layer and light collecting layer, it is characterized in that: the surface of described light collecting layer all has concaveconvex structure on the length direction of brightness enhancement film and on Width.
2. brightness enhancement film as claimed in claim 1, it is characterized in that: there is the dividing plate being parallel to each other along described brightness enhancement film length direction on the surface of described light collecting layer, between adjacent dividing plate, form interlayer, thereby in described interlayer, there is row's triangular prism and form triangular prism row, the shape of each triangular prism is identical, and two triangle bottom surface and the described dividing plate of described triangular prism are integral; Thereby the triangular prism in each interlayer row is corresponding mutually, on the Width of brightness enhancement film, to form triangular prism capable.
3. brightness enhancement film as claimed in claim 2, is characterized in that: the upper corner angle of described triangular prism are wedge angle or arc chord angle.
4. brightness enhancement film as claimed in claim 1, is characterized in that: the surface of described light collecting layer has the low groove of positive truncated rectangular pyramids shape, and the medial surface of described low groove slopes inwardly;
The boss that the bottom surface of described low groove raises up positive truncated rectangular pyramids shape, four sides of described boss slope inwardly;
The upper surface of described boss has to the central recess of recessed positive truncated rectangular pyramids shape, and the medial surface of described central recess slopes inwardly and this central recess and described low groove share bottom surface;
The spur that the bottom surface of described central recess raises up positive rectangular pyramid shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084911.7A CN103823261B (en) | 2014-03-10 | 2014-03-10 | A kind of brightness enhancement film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084911.7A CN103823261B (en) | 2014-03-10 | 2014-03-10 | A kind of brightness enhancement film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103823261A true CN103823261A (en) | 2014-05-28 |
| CN103823261B CN103823261B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410084911.7A Active CN103823261B (en) | 2014-03-10 | 2014-03-10 | A kind of brightness enhancement film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680915A (en) * | 2015-11-09 | 2017-05-17 | 宁波长阳科技股份有限公司 | Composite brightening film applied to backlight module and backlight module |
| TWI635325B (en) * | 2017-10-18 | 2018-09-11 | 友達光電股份有限公司 | Light source module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006088930A2 (en) * | 2005-02-17 | 2006-08-24 | 3M Innovative Properties Company | Brightness enhancement film comprising polymerized organic phase having low glass transition temperature |
| CN101191863A (en) * | 2006-11-20 | 2008-06-04 | 鸿富锦精密工业（深圳）有限公司 | Optical plate and preparation method thereof |
| US20100134720A1 (en) * | 2007-03-28 | 2010-06-03 | Jun Hyeak Choi | Optical prism sheet, backlight unit, and liquid crystal display |
| TW201243399A (en) * | 2011-04-19 | 2012-11-01 | Radiant Opto Electronics Corp | Brightness enhancement film and backlight module including the same |
| JP2014029450A (en) * | 2011-09-30 | 2014-02-13 | Daikin Ind Ltd | Light condensing film, solar battery module, and transfer mold |
-
2014
- 2014-03-10 CN CN201410084911.7A patent/CN103823261B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006088930A2 (en) * | 2005-02-17 | 2006-08-24 | 3M Innovative Properties Company | Brightness enhancement film comprising polymerized organic phase having low glass transition temperature |
| CN101191863A (en) * | 2006-11-20 | 2008-06-04 | 鸿富锦精密工业（深圳）有限公司 | Optical plate and preparation method thereof |
| US20100134720A1 (en) * | 2007-03-28 | 2010-06-03 | Jun Hyeak Choi | Optical prism sheet, backlight unit, and liquid crystal display |
| TW201243399A (en) * | 2011-04-19 | 2012-11-01 | Radiant Opto Electronics Corp | Brightness enhancement film and backlight module including the same |
| JP2014029450A (en) * | 2011-09-30 | 2014-02-13 | Daikin Ind Ltd | Light condensing film, solar battery module, and transfer mold |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680915A (en) * | 2015-11-09 | 2017-05-17 | 宁波长阳科技股份有限公司 | Composite brightening film applied to backlight module and backlight module |
| TWI635325B (en) * | 2017-10-18 | 2018-09-11 | 友達光電股份有限公司 | Light source module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103823261B (en) | 2016-03-09 |
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