CN204129246U - A kind of combined type brightness enhancement film and backlight module - Google Patents
A kind of combined type brightness enhancement film and backlight module Download PDFInfo
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- CN204129246U CN204129246U CN201420555647.6U CN201420555647U CN204129246U CN 204129246 U CN204129246 U CN 204129246U CN 201420555647 U CN201420555647 U CN 201420555647U CN 204129246 U CN204129246 U CN 204129246U
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- focusing unit
- light focusing
- enhancement film
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- brightness enhancement
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- 230000003287 optical effect Effects 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000007598 dipping method Methods 0.000 claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model discloses a kind of combined type brightness enhancement film and backlight module, combined type brightness enhancement film comprises base material and is arranged on the light collecting layer on base material first optical surface, light collecting layer comprises multiple light focusing unit group arranged by same preset direction, and light focusing unit group comprises at least two light focusing unit arranged by described preset direction; Light focusing unit comprises at least two-layer basic optically focused bar that stacked on top of one another arranges and is layered in the prism bar of the superiors, and at least the outline of the xsect of one deck basis optically focused bar is circular or one section of arc in ellipse; In light focusing unit group at least one prism bar at its length bearing of trend relative to described first optical surface in periodically dipping and heaving state, and by the plane perpendicular to its length bearing of trend the triangle of the xsect that cuts to be base be camber line.The utility model, by above technical scheme, solves the technical matters that existing bright enhancement film spotlight effect is not good.
Description
Technical field
The utility model relates to field of liquid crystal display, particularly relates to a kind of combined type brightness enhancement film and backlight module.
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, and especially in the display device such as liquid crystal display, normal application brightness enhancement film increases display brightness and saves the energy of display battery apparatus.It is the leg-of-mutton prism bar of class that existing brightness enhancement film directly arranges one deck xsect on base material, and because the shape of prism bar is single, spotlight effect is not good.
Utility model content
The utility model provides a kind of combined type brightness enhancement film and backlight module, solves the technical matters that existing brightness enhancement film spotlight effect is not good.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of combined type brightness enhancement film, comprises base material and light collecting layer, and described base material comprises the first optical surface and is positioned at aspectant second optical surface of described first optics, and described light collecting layer is arranged on described first optical surface; Described light collecting layer comprises multiple light focusing unit group arranged by same preset direction; Described light focusing unit group comprises at least two light focusing unit arranged by described preset direction; Described light focusing unit comprises at least two-layer basic optically focused bar that stacked on top of one another is arranged, and the prism bar be layered on the superiors' basis optically focused bar, and at least one deck basis optically focused bar by the plane perpendicular to its length bearing of trend the outline of xsect that cuts be one section of arc in circle or ellipse; In described light focusing unit group at least one prism bar at its length bearing of trend relative to described first optical surface in periodically dipping and heaving state, and by the plane perpendicular to its length bearing of trend the triangle of the xsect that cuts to be base be camber line.
Further, the prism bar in described light focusing unit group the xsect that cuts by the plane perpendicular to its length bearing of trend be the triangle of at least two types.
Further, prism bar comprises in periodically dipping and heaving state relative to described first optical surface at its length bearing of trend: this prism bar the xsect that cuts by the plane perpendicular to its length bearing of trend remain the triangle that base is camber line, rib peak is upper and lower undulating state at its length bearing of trend relative to described first optical surface, and forms the two sides at rib peak and faceted pebble is plane.
Further, described light focusing unit group also comprises and is filled in the auxiliary concentration structure of first between at least one pair of adjacent light focusing unit; And/or described light collecting layer also comprises and is filled in the auxiliary concentration structure of second between at least one pair of adjacent light focusing unit group.
Further, in described light focusing unit group, at least two light focusing unit are different relative to the height of the first optical surface.
Further, described light collecting layer is 7 to 50 microns relative to the height of the first optical surface.
Further, the pitch in described light focusing unit group between at least one pair of adjacent light focusing unit is 14 to 100 microns.
Further, in described light focusing unit, basic optically focused bar is different from the refractive index of prism bar.
Further, in described light focusing unit, the refractive index of each layer basis optically focused bar is different.
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 above described lower diffuser plate, described in above-mentioned any one combined type brightness enhancement film.
The combined type brightness enhancement film that the utility model provides, the light focusing unit that base material arranges by same preset direction not only comprises base material and prism bar, also comprise at least two-layer basic optically focused bar of the stacked on top of one another be arranged between base material and prism bar, and at least one deck basis optically focused bar by the plane perpendicular to its length bearing of trend the outline of xsect that cuts be one section of arc in circle or ellipse; Basis optically focused bar and the stacked setting of prism bar can be multiplied spotlight effect, and the outline of the xsect of basic optically focused bar is circular or one section of arc in ellipse can improving spotlight effect further, for the triangle that the xsect of prism bar is camber line for base, the optically focused bar shape of cross section different with prism bar in basis combines and can also adjust light that is vertical and horizontal direction respectively, thus adjustment is vertical and the visible angle of horizontal direction to meet different display requirements; In addition, in light focusing unit group at least one prism bar at its length bearing of trend relative to the first optical surface in periodically dipping and heaving state, the light leakage phenomena caused because of the laminating of conventional prism mechanism head distance can be alleviated, not easily flaw is produced in preparation process, can also electrostatic prevention, anti-water ripples.
Accompanying drawing explanation
The schematic diagram of the combined type brightness enhancement film that Fig. 1 provides for the utility model one embodiment.
Embodiment
The utility model provides a kind of combined type brightness enhancement film, mainly comprises base material and light collecting layer, and base material comprises the first optical surface and is positioned at aspectant second optical surface of the first optics, and light collecting layer is arranged on the first optical surface; Light collecting layer comprises multiple light focusing unit group arranged by same preset direction; Light focusing unit group comprises at least two light focusing unit arranged by described preset direction; Light focusing unit comprises at least two-layer basic optically focused bar that stacked on top of one another is arranged, and the prism bar be layered on the superiors' basis optically focused bar, and at least one deck basis optically focused bar by the plane perpendicular to its length bearing of trend the outline of xsect that cuts be one section of arc in circle or ellipse; In light focusing unit group at least one prism bar at its length bearing of trend relative to the first optical surface in periodically dipping and heaving state, and by the plane perpendicular to its length bearing of trend the triangle of the xsect that cuts to be base be camber line, one section in the outline of this leg-of-mutton camber line base in fact xsect of Ye Shi the superiors basis optically focused bar;
Base material can be that PET (Polyethylene terephthalate, poly terephthalic acid class) plastics are made; Basis optically focused bar, prism bar can directly be formed by the mode of coating on base material; In same light focusing unit, the refractive index of different basic optically focused bar can be identical or different, and the refractive index of basic optically focused bar and prism bar can be identical or different; Each light focusing unit group in light collecting layer, light focusing unit can according to horizontal direction arrangements from left to right on base material, and in light focusing unit group, the length bearing of trend of each light focusing unit can be identical and can be vertical with the orientation of light focusing unit group;
Preferably, each layer basis optically focused bar in light focusing unit by the plane perpendicular to its length bearing of trend the outline of xsect that cuts be one section of arc in circle or ellipse, such spotlight effect is better;
Preferably, prism bar in light focusing unit group the xsect that cuts by the plane perpendicular to its length bearing of trend be the triangle of at least two types in following Four types: isosceles right triangle, non-right-isosceles triangle, isosceles on-right angle triangle, non-isosceles on-right angle triangle, when the xsect of certain prism bar be isosceles right triangle or non-right-isosceles triangle time, preferably, Qi Feng angle i.e. distance base material that angle is farthest right angle; 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 light focusing unit group between at least one pair of adjacent light focusing unit is 14 to 100 microns, pitch between adjacent light focusing unit refers to, horizontal range between the center line of adjacent two light focusing unit, the center line of light focusing unit refers to the direction setting-out from the angle, peak of prism bar along vertical substrate; Preferably, in light focusing unit group, at least two light focusing unit are different relative to the height of the first optical surface, more excellent, in light focusing unit group, at least one pair of adjacent light focusing unit is different relative to the height of the first optical surface, the height of light focusing unit depend on superpose with each layer basis optically focused bar and prism bar shaping after height; Preferably, the number of the light focusing unit in light focusing unit group for being more than or equal to 2, and is less than or equal to 4;
Preferably, at its length bearing of trend relative to the prism bar of the first optical surface in periodicity dipping and heaving state, including, but not limited to following two types: one, the rib peak of this prism bar is upper and lower undulating state at its length bearing of trend relative to the first optical surface, the two sides and the faceted pebble shape that form rib peak are not limit; Two, the rib peak of this prism bar is upper and lower undulating state at its length bearing of trend relative to the first optical surface, and forms the two sides at rib peak and faceted pebble is plane; Certainly being not limited to this in other embodiments, is periodically dipping and heaving state at its length bearing of trend relative to the first optical surface substantially; Preferably, this prism bar in periodically dipping and heaving state cut by the plane perpendicular to its length bearing of trend xsect for base be the triangle of camber line;
Preferably, light focusing unit group also comprises and is filled in the auxiliary concentration structure of first between at least one pair of adjacent light focusing unit, more excellent, the first light focusing unit number few 1 of assisting the number of concentration structure to comprise than it that light focusing unit group comprises, is filled in each between adjacent light focusing unit respectively; Preferably, in order to better play a role, the outline of the xsect of the first auxiliary concentration structure can be one section of arc in circle or ellipse, wherein, the xsect of the first auxiliary concentration structure refer to the first auxiliary concentration structure the xsect that cuts by the plane perpendicular to its length bearing of trend;
Preferably, light collecting layer also comprises and is filled in the auxiliary concentration structure of second between at least one pair of adjacent light focusing unit group, preferred, the second light focusing unit group number few 1 of assisting the number of concentration structure to comprise than it that light collecting layer comprises, is filled in each between adjacent light focusing unit group respectively; Preferably, the second auxiliary concentration structure by the plane perpendicular to its length bearing of trend the outline of xsect that cuts be one section of arc in circle or ellipse; The xsect of the first auxiliary concentration structure, the second auxiliary concentration structure can be identical or different;
Preferably, light collecting layer is 7 to 50 microns relative to the height of the first optical surface, light collecting layer depends on each light focusing unit in light collecting layer relative to the height of the first optical surface, first auxiliary concentration structure, maximum height in second auxiliary concentration structure, light focusing unit in light collecting layer, first auxiliary concentration structure, second auxiliary concentration structure can be identical or different relative to the height of the first optical surface, preferably, first auxiliary concentration structure and/or second assists concentration structure relative to the height of the first optical surface, be less than the height of its adjacent both sides light focusing unit relative to the first optical surface.
As shown in Figure 1, be the combined type brightness enhancement film that the utility model one embodiment provides, comprise base material 11 and light collecting layer, base material 11 comprises the first optical surface 111 and is positioned at second optical surface 112 on the first optical surface 111 opposite, and light collecting layer is arranged on the first optical surface 111, light collecting layer in the present embodiment is included in the multiple mutually isostructural light focusing unit group by horizontal direction arrangement from left to right on the first optical surface 111, light focusing unit group comprises the multiple mutually isostructural light focusing unit by arranging with light focusing unit group aligned identical direction, because the structure of each light focusing unit in the present embodiment is all identical, so to be arranged in a leftmost light focusing unit, it comprises one deck basis optically focused bar 121 and prism bar 122 that are up cascading by the first optical surface 111, and basic optically focused bar 121 outline of xsect that cuts by the plane perpendicular to its length bearing of trend be one section of arc in circle, prism bar 122 by the plane perpendicular to its length bearing of trend the triangle of the xsect that cuts to be base be camber line, this leg-of-mutton camber line base is in fact also one section in the outline of the xsect of basic optically focused bar 121, prism bar 122 at its length bearing of trend relative to the first optical surface 111 in periodically dipping and heaving state, in the present embodiment, prism bar 122 xsect that cuts by the plane perpendicular to its length bearing of trend remain the triangle that base is camber line, the rib peak 1222 of this prism bar at its length bearing of trend relative to the first optical surface 111 in upper and lower undulating state, and the two sides (comprise right flank 1221 and left surface, left surface is not shown) forming rib peak 1222 are plane.
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 combined type brightness enhancement film that the utility model be arranged on above lower diffuser plate provides.
The combined type brightness enhancement film that the utility model provides, each light focusing unit not only comprises base material and prism bar, also comprise at least two-layer basic optically focused bar of the stacked on top of one another be arranged between base material and prism bar, basis optically focused bar and the stacked setting of prism bar can be multiplied spotlight effect, do not need to rely on glue, and the outline of the xsect of basic optically focused bar is circular or one section of arc in ellipse can improving spotlight effect further, for the triangle that the xsect of prism bar is camber line for base, the optically focused bar shape of cross section different with prism bar in basis combines and can also adjust light that is vertical and horizontal direction respectively, thus adjustment is vertical and the visible angle of horizontal direction to meet different display requirements, in addition, in light focusing unit group at least one prism bar at its length bearing of trend relative to the first optical surface in periodically dipping and heaving state, the light leakage phenomena caused because of the laminating of conventional prism mechanism head distance can be alleviated, not easily flaw is produced in preparation process, can also electrostatic prevention, anti-water ripples.
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 combined type brightness enhancement film, is characterized in that, comprises base material and light collecting layer, and described base material comprises the first optical surface and is positioned at aspectant second optical surface of described first optics, and described light collecting layer is arranged on described first optical surface; Described light collecting layer comprises multiple light focusing unit group arranged by same preset direction; Described light focusing unit group comprises at least two light focusing unit arranged by described preset direction; Described light focusing unit comprises at least two-layer basic optically focused bar that stacked on top of one another is arranged, and the prism bar be layered on the superiors' basis optically focused bar, and at least one deck basis optically focused bar by the plane perpendicular to its length bearing of trend the outline of xsect that cuts be one section of arc in circle or ellipse; In described light focusing unit group at least one prism bar at its length bearing of trend relative to described first optical surface in periodically dipping and heaving state, and by the plane perpendicular to its length bearing of trend the triangle of the xsect that cuts to be base be camber line.
2. combined type brightness enhancement film as claimed in claim 1, is characterized in that, the prism bar in described light focusing unit group the xsect that cuts by the plane perpendicular to its length bearing of trend be the triangle of at least two types.
3. combined type brightness enhancement film as claimed in claim 1, it is characterized in that, prism bar comprises in periodically dipping and heaving state relative to described first optical surface at its length bearing of trend: the rib peak of this prism bar be upper and lower undulating state at its length bearing of trend relative to described first optical surface, and the two sides at formation rib peak are plane.
4. combined type brightness enhancement film as claimed in claim 1, is characterized in that, described light focusing unit group also comprises and is filled in the auxiliary concentration structure of first between at least one pair of adjacent light focusing unit; And/or described light collecting layer also comprises and is filled in the auxiliary concentration structure of second between at least one pair of adjacent light focusing unit group.
5. combined type brightness enhancement film as claimed in claim 1, is characterized in that, in described light focusing unit group, at least two light focusing unit are different relative to the height of the first optical surface.
6. combined type brightness enhancement film as claimed in claim 1, it is characterized in that, described light collecting layer is 7 to 50 microns relative to the height of the first optical surface.
7. combined type brightness enhancement film as claimed in claim 1, it is characterized in that, the pitch in described light focusing unit group between at least one pair of adjacent light focusing unit is 14 to 100 microns.
8. the combined type brightness enhancement film as described in any one of claim 1 to 7, is characterized in that, in described light focusing unit, basic optically focused bar is different from the refractive index of prism bar.
9. combined type brightness enhancement film as claimed in claim 8, is characterized in that, in described light focusing unit, the refractive index of each layer basis optically focused bar is different.
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 combined type brightness enhancement film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555647.6U CN204129246U (en) | 2014-09-25 | 2014-09-25 | A kind of combined type brightness enhancement film and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555647.6U CN204129246U (en) | 2014-09-25 | 2014-09-25 | A kind of combined type brightness enhancement film and backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN204129246U true CN204129246U (en) | 2015-01-28 |
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|---|---|---|---|
| CN201420555647.6U Expired - Lifetime CN204129246U (en) | 2014-09-25 | 2014-09-25 | A kind of combined type brightness enhancement film and backlight module |
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| CN (1) | CN204129246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-09-25 CN CN201420555647.6U patent/CN204129246U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113985655B (en) * | 2021-10-22 | 2023-04-07 | 珠海市科弥光电有限公司 | Backlight module for television based on optical composite film |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150128 |