CN204116632U - A kind of brightness enhancement film and backlight module - Google Patents
A kind of brightness enhancement film and backlight module Download PDFInfo
- Publication number
- CN204116632U CN204116632U CN201420556251.3U CN201420556251U CN204116632U CN 204116632 U CN204116632 U CN 204116632U CN 201420556251 U CN201420556251 U CN 201420556251U CN 204116632 U CN204116632 U CN 204116632U
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- prism
- brightness enhancement
- enhancement film
- prisms
- bar
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- 239000000463 material Substances 0.000 claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002411 adverse Effects 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- -1 Polyethylene terephthalate Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- Optical Elements Other Than Lenses (AREA)
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a kind of brightness enhancement film and backlight module, and brightness enhancement film comprises base material, and arranges layers of prisms on the substrate; Described layers of prisms comprises multiple prism unit arranged by same preset direction, described prism unit comprises n the prism bar arranged by described preset direction, and a described n prism bar the xsect that cuts by the plane perpendicular to prism bar length bearing of trend be the triangle of at least two types, n be more than or equal to 2 positive integer; Described prism unit also comprises the first light focusing unit be filled between at least one pair of adjacent prisms bar.The utility model is by above technical scheme, and solve existing brightness enhancement film and easily produce the adverse optical such as optically-coupled, water ripples effect, spotlight effect is not good, the technical matters that light loss is serious.
Description
Technical field
The utility model relates to field of liquid crystal display, particularly relates to a kind of brightness enhancement film and the backlight module with better spotlight effect.
Background technology
At present, brightness enhancement film is widely used in backlight module to be used for converging the light that sends of light source, especially in the display device such as liquid crystal display, often applies the energy that brightness enhancement film (BEF) increases display brightness and saves display battery apparatus.
Traditional brightness enhancement film easily produces the adverse optical such as optically-coupled, water ripples effect, and spotlight effect is not good, and light loss is serious.
Utility model content
The utility model provides a kind of brightness enhancement film and backlight module, and solve existing brightness enhancement film and easily produce the adverse optical such as optically-coupled, water ripples effect, spotlight effect is not good, the technical matters that light loss is serious.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of brightness enhancement film, comprises base material, and arranges layers of prisms on the substrate; Described layers of prisms comprises multiple prism unit arranged by same preset direction, described prism unit comprises n the prism bar arranged by described preset direction, and a described n prism bar the xsect that cuts by the plane perpendicular to prism bar length bearing of trend be the triangle of at least two types, n be more than or equal to 2 positive integer; Described prism unit also comprises the first light focusing unit be filled between at least one pair of adjacent prisms bar.
Further, described layers of prisms also comprises the second light focusing unit be filled between at least one pair of adjacent prisms unit.
Further, in described prism unit, at least two prism bar are different relative to the height of base material.
Further, in described prism unit, at least one pair of adjacent prisms bar is different relative to the height of base material.
Further, described layers of prisms is 7 to 50 microns relative to the height of base material.
Further, the pitch in described prism unit between at least one pair of adjacent prisms bar is 14 to 100 microns.
Further, n prism bar in described prism unit the xsect that cuts by the plane perpendicular to prism bar length bearing of trend be in following three types triangle at least two kinds: isosceles right triangle, non-right-isosceles triangle, isosceles on-right angle triangle.
Further, the angle, peak of described isosceles right triangle, non-right-isosceles triangle is right angle; And/or described isosceles right triangle, that isosceles on-right angle triangle forms the both sides at angle, peak is isometric.
Further, described first light focusing unit and/or the second light focusing unit the outline of xsect that cuts by the plane perpendicular to prism bar length bearing of trend be circular or one section of arc in ellipse.
A kind of backlight module, comprise light source, be arranged on the light guide plate of described light source side, be arranged on expelling plate below described light guide plate, be arranged on lower diffuser plate above described light guide plate, and be arranged on the brightness enhancement film described in above-mentioned any one above described lower diffuser plate.
The brightness enhancement film that the utility model provides, n prism bar in the prism unit that base material arranges by same preset direction the xsect that cuts by the plane perpendicular to prism bar length bearing of trend be the triangle of at least two types, and prism unit also comprises the first light focusing unit be filled between at least one pair of adjacent prisms bar.The prism bar of triangular cross section adds the first light focusing unit be filled between prism bar, spotlight effect is superposed, reduce the loss of light, optically-coupled can be eliminated, reduce the adverse optical effect such as water ripples, but also can respectively light that is vertical and horizontal direction be adjusted, thus adjustment is vertical and the visible angle of horizontal direction to meet different display requirements.
Accompanying drawing explanation
The schematic diagram of the brightness enhancement film that Fig. 1 provides for the utility model one embodiment;
Fig. 2 is the enlarged drawing of the xsect of brightness enhancement film shown in Fig. 1;
The schematic diagram of the brightness enhancement film that Fig. 3 provides for another embodiment of the utility model;
Fig. 4 is the enlarged drawing of the xsect of brightness enhancement film shown in Fig. 3.
Embodiment
The utility model provides a kind of brightness enhancement film, mainly comprises base material, and is arranged on the layers of prisms on base material; Layers of prisms comprises multiple prism unit arranged by same preset direction; Prism unit comprises n the prism bar arranged by this preset direction, n be more than or equal to 2 positive integer, prism unit also comprises the first light focusing unit be filled between at least one pair of adjacent prisms bar.
Wherein, base material can be that PET (Polyethylene terephthalate, poly terephthalic acid class) plastics are made.Layers of prisms can directly be formed by the mode of coating on base material.In layers of prisms, each prism bar can according to horizontal direction arrangement from left to right on base material, and in layers of prisms, the length bearing of trend of each prism bar can be identical and can be vertical with the orientation of prism bar.
The xsect of n prism bar in prism unit is the triangle of at least two types, the xsect of prism bar refer to prism bar the xsect that intercepts by the plane perpendicular to prism bar length bearing of trend.Preferably, the xsect of this n prism bar is at least two kinds in following three types triangle: isosceles right triangle, non-right-isosceles triangle, isosceles on-right angle triangle, when the xsect of certain prism bar be isosceles right triangle or non-right-isosceles triangle time, preferably, namely Qi Feng angle is right angle away from that angle of base material; When the xsect of certain prism bar be isosceles right triangle or isosceles on-right angle triangle time, preferably, the both sides forming angle, peak are isometric.Preferably, pitch in prism unit between at least one pair of adjacent prisms bar is 14 to 100 microns, pitch between adjacent prisms bar refers to the horizontal range between the center line of adjacent two prisms bar, and the center line of prism bar refers to the direction setting-out from the angle, peak of prism bar along vertical substrate.Preferably, in prism unit, at least two prism bar are different, more excellent relative to the height of base material, and in prism unit, at least one pair of adjacent prisms bar is different relative to the height of base material.Preferably, n for being more than or equal to 2, and is less than or equal to the positive integer of 4.
Prism unit can comprise n-1 the first light focusing unit, is filled in respectively between each pair of adjacent prisms bar.Preferably, in order to better play a role, the outline of the xsect of the first light focusing unit can be circular or one section of arc in ellipse, wherein, the xsect of the first light focusing unit refer to the first light focusing unit the xsect that cuts by the plane perpendicular to prism bar length bearing of trend.
Preferably, layers of prisms also comprises the second light focusing unit be filled between at least one pair of adjacent prisms unit.Preferred, layers of prisms comprises second light focusing unit of fewer than prism unit number 1, is filled in respectively between each pair of adjacent prisms unit.Preferably, the second light focusing unit the outline of xsect that cuts by the plane perpendicular to prism bar length bearing of trend be circular or one section of arc in ellipse.The xsect of the first light focusing unit, the second light focusing unit can be identical or different.
Preferably, layers of prisms is 7 to 50 microns relative to the height of base material, layers of prisms depends on the maximum height in each prism bar in layers of prisms, the first light focusing unit, the second light focusing unit relative to the height of base material, prism bar, the first light focusing unit in layers of prisms, the second light focusing unit can be identical or different relative to the height of base material, preferably, first light focusing unit and/or the second light focusing unit, relative to the height of base material, are less than the height of its adjacent both sides prism bar relative to base material.
As shown in Figure 1, for the brightness enhancement film that the utility model one embodiment provides, comprise base material 11, and the layers of prisms be arranged on base material 11, layers of prisms is included in 3 mutually isostructural prism unit by horizontal direction arrangement from left to right on base material 11, to be arranged in one of them prism unit leftmost, it comprises the first prism bar 12 and the second prism bar 13 by arranging with prism unit aligned identical direction, and the first light focusing unit 14 be filled between the first prism bar 12 and the second prism bar 13, layers of prisms also comprises the second light focusing unit 15 be filled between two adjacent ribs mirror units, in layers of prisms, the length bearing of trend of each prism bar is identical, in layers of prisms, the length bearing of trend of each prism bar is vertical with orientation, shown in composition graphs 2 along the plane perpendicular to each prism bar length bearing of trend in layers of prisms the enlarged cross sectional views that cuts, the xsect of the first prism bar 12 is isosceles right triangle, Qi Feng angle a1 is right angle, form the both sides 121 at angle, peak, 122 isometric, the xsect of the second prism bar 13 is non-right-isosceles triangle, Qi Feng angle a2 is right angle, and the outline of the xsect of the first light focusing unit 14, second light focusing unit 15 is one section of arc in circle, first prism bar 12 is greater than the height h2 of the second prism bar 13 relative to base material 11 relative to the height h1 of base material 11, and the first light focusing unit 14, second light focusing unit 15 is identical relative to the height of base material 11, and lower than h1, h2.
As shown in Figure 3, for the brightness enhancement film that another embodiment of the utility model provides, comprise base material 31, and the layers of prisms be arranged on base material 31, layers of prisms is included in prism unit identical by 2 of horizontal direction arrangement from left to right on base material 31, to be arranged in one of them prism unit leftmost, it comprises the first prism bar 32 by arranging with prism unit aligned identical direction, second prism bar 33, prism articles 34 and the 4th prism bar 35, and the first light focusing unit 36 be filled between often pair of adjacent prisms bar, layers of prisms also comprises the second light focusing unit 37 be filled between two prisms unit, in layers of prisms, the length bearing of trend of each prism bar is identical, in layers of prisms, the length bearing of trend of each prism bar is vertical with orientation, the plane along the length bearing of trend perpendicular to each prism bar in layers of prisms shown in composition graphs 4 the enlarged cross sectional views that cuts, the xsect of the first prism bar 32 is isosceles right triangle, Qi Feng angle a1 is right angle, form the both sides 321 at angle, peak, 322 is isometric, the xsect of the second prism bar 33 is non-right-isosceles triangle, Qi Feng angle a2 is right angle, the xsect of prism articles 34 is isosceles on-right angle triangle, form the both sides 341 at angle, peak, 342 is isometric, the xsect of the 4th prism bar 35 is non-isosceles on-right angle triangle, first light focusing unit 36, the outline of the xsect of the second light focusing unit 37 is one section of arc in circle, first prism bar 32, second prism bar 33, prism articles 34 is different relative to height h1, h2, h3, h4 of base material 11 with the 4th prism bar 35, first light focusing unit 36, second light focusing unit 37 is identical relative to the height of base material 31, and all lower than h1, h2, h3, h4.
The utility model also provides a kind of backlight module, comprise light source, be arranged on the light guide plate of light source side, be arranged on expelling plate below light guide plate, be arranged on lower diffuser plate above light guide plate and the various brightness enhancement film that the utility model be arranged on above lower diffuser plate provides.
The brightness enhancement film that the utility model provides, the prism bar of triangular cross section adds the first light focusing unit, the second light focusing unit that are filled between prism bar, spotlight effect is superposed, reduce the loss of light, optically-coupled can be eliminated, reduce the adverse optical effect such as water ripples, but also can respectively light that is vertical and horizontal direction be adjusted, thus adjustment is vertical and the visible angle of horizontal direction to meet different display requirements.
Above content is in conjunction with concrete embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. a brightness enhancement film, is characterized in that, comprises base material, and arranges layers of prisms on the substrate; Described layers of prisms comprises multiple prism unit arranged by same preset direction, described prism unit comprises n the prism bar arranged by described preset direction, and a described n prism bar the xsect that cuts by the plane perpendicular to prism bar length bearing of trend be the triangle of at least two types, n be more than or equal to 2 positive integer; Described prism unit also comprises the first light focusing unit be filled between at least one pair of adjacent prisms bar.
2. brightness enhancement film as claimed in claim 1, it is characterized in that, described layers of prisms also comprises the second light focusing unit be filled between at least one pair of adjacent prisms unit.
3. brightness enhancement film as claimed in claim 1, is characterized in that, in described prism unit, at least two prism bar are different relative to the height of base material.
4. brightness enhancement film as claimed in claim 3, is characterized in that, in described prism unit, at least one pair of adjacent prisms bar is different relative to the height of base material.
5. brightness enhancement film as claimed in claim 1, it is characterized in that, described layers of prisms is 7 to 50 microns relative to the height of base material.
6. brightness enhancement film as claimed in claim 1, it is characterized in that, the pitch in described prism unit between at least one pair of adjacent prisms bar is 14 to 100 microns.
7. brightness enhancement film as claimed in claim 1, it is characterized in that, n prism bar in described prism unit the xsect that cuts by the plane perpendicular to prism bar length bearing of trend be in following three types triangle at least two kinds: isosceles right triangle, non-right-isosceles triangle, isosceles on-right angle triangle.
8. brightness enhancement film as claimed in claim 7, it is characterized in that, the angle, peak of described isosceles right triangle, non-right-isosceles triangle is right angle; And/or described isosceles right triangle, that isosceles on-right angle triangle forms the both sides at angle, peak is isometric.
9. brightness enhancement film as claimed in claim 2, is characterized in that, described first light focusing unit and/or the second light focusing unit by the plane perpendicular to prism bar length bearing of trend the outline of xsect that cuts be one section of arc in circle or ellipse.
10. a backlight module, it is characterized in that, comprise light source, be arranged on the light guide plate of described light source side, be arranged on expelling plate below described light guide plate, be arranged on lower diffuser plate above described light guide plate, and be arranged on above described lower diffuser plate, as described in any one of claim 1 to 9 brightness enhancement film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420556251.3U CN204116632U (en) | 2014-09-25 | 2014-09-25 | A kind of brightness enhancement film and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420556251.3U CN204116632U (en) | 2014-09-25 | 2014-09-25 | A kind of brightness enhancement film and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204116632U true CN204116632U (en) | 2015-01-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420556251.3U Expired - Lifetime CN204116632U (en) | 2014-09-25 | 2014-09-25 | A kind of brightness enhancement film and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204116632U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610590A (en) * | 2017-09-25 | 2018-01-19 | 深圳市华星光电技术有限公司 | Multifunction advertising display screen |
-
2014
- 2014-09-25 CN CN201420556251.3U patent/CN204116632U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610590A (en) * | 2017-09-25 | 2018-01-19 | 深圳市华星光电技术有限公司 | Multifunction advertising display screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150121 |