CN113917584A - Brightness enhancement film, backlight module, rolling wheel and processing method of brightness enhancement film - Google Patents
Brightness enhancement film, backlight module, rolling wheel and processing method of brightness enhancement film Download PDFInfo
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- CN113917584A CN113917584A CN202111050046.0A CN202111050046A CN113917584A CN 113917584 A CN113917584 A CN 113917584A CN 202111050046 A CN202111050046 A CN 202111050046A CN 113917584 A CN113917584 A CN 113917584A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 21
- 238000003672 processing method Methods 0.000 title abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
- B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
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Abstract
The embodiment of the invention discloses a bright enhancement film, a backlight module, a rolling wheel and a processing method of the bright enhancement film, wherein the bright enhancement film comprises a substrate and a plurality of prism units which are arranged along a first direction and arranged on the substrate. Any prism unit comprises a first prism and a second prism, the projections of the first prism and the second prism on a plane perpendicular to the extending direction of the first prism and the second prism are isosceles triangles with vertex angles opposite to the substrate, and the central line from the vertex angle of the first prism to the substrate is superposed with the central line from the vertex angle of the second prism to the substrate. Along first direction, a plurality of first prisms are arranged at intervals, a plurality of second prisms are connected in sequence, and the height from the reference position of the crest of the first prism to the base is greater than the height from the reference position of the crest of the second prism to the base. By adopting the brightness enhancement film provided by the invention, the first prism and the second prism which are arranged in an overlapped mode act on incident light, so that the light output by the brightness enhancement film is more balanced in distribution, and the brightness enhancement film is more suitable for light guide plates of different models compared with the prior art.
Description
Technical Field
The invention relates to the technical field of optical diaphragms, in particular to a bright enhancement film, a backlight module, a processing method of a rolling wheel and a processing method of the bright enhancement film.
Background
The backlight module refers to a device applied to the front end of a display screen to enhance the optical effect.
Referring to fig. 1, the backlight module includes a brightness enhancement film 10, a light guide plate 20 and a reflector 30, and the LED light source is located at one side of the light guide plate, wherein the dotted line and the arrow represent the light path. It should be noted that the light guide plate is used to provide light rays with a certain angle and approximately parallel to each other. Referring to fig. 2, the prism 12 is an isosceles triangle, and based on the trigonometric theorem, it can be known that when the emergent angle a of the light is equal to the vertex angle b of the prism 12, the light can be emitted perpendicularly to the bottom surface of the prism 12, and at this time, the central area of the backlight module has a higher brightness and a better optical effect.
However, in practical applications, the light guide plate has various structures, and the angles of the emergent light provided by the light guide plate are different, so that the emergent angle a and the vertex angle b have great difference, thereby affecting the overall optical effect of the backlight module.
Disclosure of Invention
Accordingly, it is desirable to provide a brightness enhancement film, a backlight module, a rolling wheel and a processing method of the brightness enhancement film, which can adapt to different light guide plates.
A brightness enhancement film comprises a substrate and a plurality of prism units arranged on the substrate along a first direction;
any prism unit comprises a first prism and a second prism, the projections of the first prism and the second prism on a plane vertical to the extension direction of the first prism and the second prism are isosceles triangles with vertex angles opposite to the substrate, and the central line from the vertex angle of the first prism to the substrate is superposed with the central line from the vertex angle of the second prism to the substrate;
along a first direction, a plurality of first prisms are arranged at intervals, a plurality of second prisms are sequentially connected, and the height from the reference position of the peak of the first prism to the base is greater than the height from the reference position of the peak of the second prism to the base.
In some embodiments of the brightness enhancement film, the apex angle of the first prism ranges from 50 ° to 65 °, and the apex angle of the second prism ranges from 65 ° to 80 °.
In some embodiments of the brightness enhancement film, a height from a position where a surface of the first prism intersects with the second prism to the substrate is less than one third of a height from a reference position of a peak of the first prism to the substrate and is greater than 0.
In some embodiments of the brightness enhancement film, a height from a reference position of a peak of the first prism to the substrate ranges from 5 μm to 50 μm.
In some embodiments of the brightness enhancement film, the distance between the central lines of two adjacent first prisms is 5 μm to 100 μm.
In some embodiments of the brightness enhancement film, the substrate has a thickness of 10 μm to 50 μm or 50 μm to 100 μm.
In some embodiments of the brightness enhancement film, a peak value of a peak of the first prism varies periodically along an extending direction of the first prism.
In some embodiments of the brightness enhancement film, a peak variation of a peak of the first prism is less than 50% of a height of the base to the substrate from a base of the peak of the first prism.
In some embodiments of the brightness enhancement film, a peak value of a peak of the first prism varies by a length of one period in an extending direction of the first prism, which is greater than 50 μm.
A backlight module comprises a light guide plate and a brightness enhancement film, wherein the light guide plate is used for guiding light, the brightness enhancement film is arranged according to any embodiment, the light guide plate and the brightness enhancement film are arranged in a laminated mode, and the light guide plate is arranged on one side, provided with a prism unit, of the brightness enhancement film.
A method for processing a rolling wheel comprises the following steps:
providing a base wheel, a first cutter and a second cutter;
driving the base wheel to rotate;
driving the first cutter to move along the axial direction of the base wheel, and periodically cutting the base wheel to form a plurality of first grooves which correspond to the first prisms in any embodiment and are arranged at intervals;
and driving the second cutter to move along the axial direction of the base wheel, and cutting the base wheel at the same period as the first cutter to form a plurality of second grooves corresponding to and sequentially connected with the second prisms in any embodiment, so as to obtain the rolling wheel.
A method for processing a rolling wheel comprises the following steps:
providing a base wheel and a third tool adapted to the prism unit of any of the embodiments described above;
driving the base wheel to rotate;
and driving the third cutter to move along the axial direction of the base wheel, and periodically cutting the base wheel to form a plurality of third grooves which are matched with the prism units and are sequentially connected, so as to obtain the rolling wheel.
A processing method of a brightness enhancement film comprises the following steps:
providing a base material and a curing adhesive, and coating the curing adhesive on the end face of the base material to form a cured layer;
rolling the cured layer by using the rolling wheels obtained by the processing method according to the above embodiment to obtain the bright enhancement film.
The embodiment of the invention has the following beneficial effects:
according to the brightness enhancement film provided by the embodiment, the plurality of first prisms are arranged at intervals along the first direction, and the plurality of second prisms are sequentially connected, namely, the lengths of the bottom surfaces of the first prisms and the second prisms are different in the first direction. The reference position of the peak of the first prism is higher than that of the second prism, that is, the vertex angle of the first prism is different from that of the second prism, and the vertex angle of the second prism is larger than that of the first prism. Based on the fact that the first prism and the second prism are isosceles prisms, after the first prism and the second prism are overlapped, the prism units and one side of the central line of the prism units form two end faces, and the two end faces respectively belong to a first prism which is far away from the substrate and the apex angle of the first prism is A1 and a second prism which is close to the substrate and the apex angle of the second prism is A2. When light rays enter the prism unit at an angle, part of the light rays are reflected on the inner wall of the first prism, and the other part of the light rays are emitted on the inner wall of the second prism. By adopting the brightness enhancement film provided by the invention, the first prism and the second prism which are arranged in an overlapped mode act on incident light, particularly the light with the incident angle between the apex angle A1 of the first prism and the apex angle A2 of the second prism, so that the light output by the brightness enhancement film is more balanced in distribution, and compared with the prior art, the brightness enhancement film is more suitable for light guide plates of different models.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
fig. 1 is a schematic structural diagram of a backlight module in the prior art.
Fig. 2 is a schematic view of a portion of the backlight module shown in fig. 1.
Fig. 3 is a schematic structural view of a brightness enhancement film and a light guide plate according to an embodiment.
Fig. 4 is a schematic structural diagram of a rolling wheel according to an embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, interchangeably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or communicated between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 3, a brightness enhancement film 100 according to an embodiment of the invention includes a substrate 110 and a plurality of prism units 120 arranged along a first direction V1 and on the substrate 110. Any prism unit 120 includes a first prism 122 and a second prism 124, projections of the first prism 122 and the second prism 124 on a plane perpendicular to an extending direction thereof are isosceles triangles of which vertex angles are opposite to the substrate 110, and a central line from the vertex angle of the first prism 122 to the substrate 110 coincides with a central line from the vertex angle of the second prism 124 to the substrate 110. Along the first direction V1, a plurality of first prisms 122 are arranged at intervals, a plurality of second prisms 124 are connected in sequence, and the height from the reference position of the peak of the first prism 122 to the substrate 110 is greater than the height from the reference position of the peak of the second prism 124 to the substrate 110.
The reference position of the peak of the first prism 122 is an intersection line of planes on which the two side surfaces of the first prism 122 are located, i.e., a virtual line position, and the height from the reference position to the base 110 is a constant value.
The reference level is set mainly for the convenience of distinguishing the peak value of the peak of the first prism 122. Incidentally, the peak value of the peak of the first prism 122 means that the value from the peak of the first prism 122 to the base 110 is a variable value in practice.
According to the brightness enhancement film 100 provided by the above embodiment, the plurality of first prisms 122 are disposed at intervals along the first direction V1, and the plurality of second prisms 124 are sequentially connected, that is, the bottom surfaces of the first prisms 122 and the second prisms 124 have different lengths in the first direction V1. The reference position of the peak of the first prism 122 is higher than that of the second prism 124, that is, the vertex angles of the first prism 122 and the second prism 124 are different, and the vertex angle of the second prism 124 is larger than that of the first prism 122. Based on the fact that the first prism 122 and the second prism 124 are isosceles prisms, after the first prism 122 and the second prism 124 are overlapped, the prism unit 120 and one side of the central line thereof form two end surfaces, which respectively belong to the first prism 122 far away from the substrate 110 and having an apex angle of a1, and the second prism 124 close to the substrate 110 and having an apex angle of a 2. When light enters the prism unit 120 at an angle, a portion of the light is reflected by the inner wall of the first prism 122, and another portion of the light is emitted by the inner wall of the second prism 124.
By adopting the brightness enhancement film 100 provided by the invention, the first prism 122 and the second prism 124 which are overlapped act on incident light, especially the light with the incident angle between the apex angle a1 of the first prism 122 and the apex angle a2 of the second prism 124, so that the light distribution output by the brightness enhancement film 100 is more balanced, and compared with the prior art, the brightness enhancement film 100 is more suitable for light guide plates 200 of different models.
Preferably, apex angle A1 of first prism 122 ranges from 50 degrees to 65 degrees, and apex angle A2 of second prism 124 ranges from 65 degrees to 80 degrees.
Note that, since the first prism 122 and the second prism 124 are partially overlapped, the vertex angle a2 of the second prism 124 is contained in the first prism 122 and cannot be directly measured. The angle may be obtained according to an included angle formed by end surfaces of both sides of the second prism 124 in the prism unit 120.
With reference to fig. 3, in an embodiment of the invention, a height H3 from the intersection of the surface of the first prism 122 and the second prism 124 to the base 110 is less than one third of a height H1 from a peak of the first prism 122 to the base 110 and is greater than 0. Specifically, the effect of controlling H3 can be achieved by controlling the vertex angle a1 of the first prism 122 and the reference height H1 of the peak, and the vertex angle a2 of the second prism 124 and the reference height H2 of the peak.
It should be added that the ratio of H3 to H1 can be converted into the ratio of the light reflected by the first prism 122 to the light reflected by the second prism 124, so as to achieve the purpose of controlling the light output effect.
Specifically, the height from the reference position of the peak of the first prism 122 to the base 110 ranges from 5 μm to 50 μm.
Preferably, the distance between the central lines of two adjacent first prisms 122 is 5 μm to 100 μm.
The thickness of the substrate 110 is 10 μm to 50 μm or 50 μm to 100 μm.
In another embodiment provided by the present invention, the peak value of the peak of the first prism 122 varies periodically along the extending direction of the first prism 122. With this structure, the output light can be diffused, thereby reducing moir e applied to the display screen of the brightness enhancement film 100.
In a specific embodiment, the peak variation of the peak of the first prism 122 is less than 50% of the height from the base of the base 110 of the peak of the first prism 122.
In yet another specific embodiment, the peak value of the peak of the first prism 122 varies by a period of more than 50 μm in the extending direction of the first prism 122.
The heights of H3, H1 and the corresponding center brightness and backlight viewing angle are further described below by specific examples.
In the above examples, the angle of the incident light of the brightness enhancement film is 67.7 °. The angle of the incident light is substantially the same as the vertex angle of the first prism 122 in the first embodiment of the above table, and the intensifying effect is the best in theory and in a single prism. The second to seventh embodiments are therefore all based on the first embodiment.
A1 in the table is the vertex angle of the first prism 122, Pitch is the distance between the centerlines of two adjacent first prisms 122, H1 is the height of the reference position of the vertex of the first prism 122, a2 is the vertex angle of the second prism 124, and H3 is the height from the intersection of the first prism 122 and the second prism 124 to the base 110.
The brightness of a front view angle refers to the brightness of a display screen at which one unit of the display screen is directly opposite to the brightness of the brightness enhancement film 100 applied to the display screen. Compared with the first embodiment, the higher the brightness of the front viewing angle is, the better the brightness enhancement effect of the brightness enhancement film is.
The brightest viewing angle of the backlight refers to an included angle between the brightest viewing angle in the horizontal viewing angle of one unit of the display screen and the viewing angle directly facing the unit after the brightness enhancement film 100 is applied to the display screen. The more the included angle approaches to 0, the better the effect of the brightness enhancement film is.
As can be seen from the above table, when the height of H3 is 3 μm or 4 μm or 5 μm, the brightness enhancement film 100 can exhibit a central brightness higher than or similar to that of the first embodiment, and especially when the height of H3 is 4 μm, the backlight viewing angle of the brightness enhancement film 100 can be consistent with that of the first embodiment.
Therefore, the brightness enhancement film 100 provided by the present invention can achieve the same or better brightness enhancement effect than the prior art, and has wider adaptability.
The present invention further provides a backlight module, which comprises a light guide plate 200 for guiding light and the brightness enhancement film 100 provided according to any of the above embodiments, wherein the light guide plate 200 is stacked with the brightness enhancement film 100, and the light guide plate 200 is disposed on the side of the brightness enhancement film 100 having the prism unit 120. Of course, the backlight module may also include other structures such as a reflector.
Referring to fig. 4, another embodiment of the present invention further provides a method for manufacturing a rolling wheel, including:
s10: providing a base wheel 310, a first tool, and a second tool;
for ease of machining, the angle of the edge of the first cutter corresponds to a1 and the angle of the edge of the second cutter corresponds to a 2.
S20: driving the base wheel 310 to rotate;
s30: driving the first cutter to move along the axial direction of the base wheel 310 and periodically cutting the base wheel 310 to form a plurality of first grooves 312 corresponding to and spaced apart from the first prisms 122 provided according to the above embodiment;
it will be appreciated that the first tool moves axially of the base wheel 310 without cutting the base wheel 310, and only cuts the base wheel 310 when the first tool is radially advanced toward the base wheel 310.
S40: the second cutter is driven to move in the axial direction of the base wheel 310 and cuts the base wheel 310 at the same period as the first cutter to form a plurality of second grooves 314 corresponding to and sequentially connected to the second prisms 124 provided according to the above-described embodiment, thereby obtaining a rolled wheel.
Another embodiment of the present invention further provides a method for manufacturing a rolled wheel, including:
s100: providing a base wheel and a third tool adapted to the prism unit 120 provided according to the above embodiment;
s200: driving the base wheel to rotate;
s300: and driving a third cutter to move along the axial direction of the base wheel and periodically cutting the base wheel to form a plurality of third grooves which are matched with the prism units 120 and are sequentially connected, thereby obtaining a rolled wheel.
It is understood that the third tool is a profile tool, and the shape adapted to the prism unit 120 can be directly obtained by one-time processing, and as for other steps in the method, reference may be made to the processing method of the rolling wheel mentioned in the above embodiment.
In a specific embodiment provided by the present invention, in the process of step S300, the following steps are further included.
S310: and driving the third cutter to shake back and forth in the direction close to or far away from the base wheel.
Specifically, the direction close to or far from the base wheel is the radial direction of the base wheel, the third cutter vibrates in the radial direction in the axial cutting process of the base wheel to form a third groove with a constantly changing bottom edge, and the prism unit with a periodically changing peak value is obtained through the steps of roll forming and the like.
Referring to fig. 3, the distance from the substrate to the dotted line intersection of the second prism of the bright enhancement film manufactured by the rolling wheel processed by the method also varies periodically. In one embodiment, when the height H3 is less than one third of the height H1 from the reference position of the peak of the first prism 122 to the height H1 of the substrate 110 and greater than 0, then to satisfy this condition, referring to fig. 4, the amplitude of the vibration of the third tool along the direction close to the base wheel is less than one third of the height H1 from the reference position of the peak of the first prism 122 to the height H1 of the substrate 110.
Another embodiment of the present invention further provides a processing method of the brightness enhancement film 100, including:
s1000: providing a base material and a curing adhesive, and coating the curing adhesive on the end face of the base material to form a cured layer;
preferably, the base material is a PET material, and the curing glue is UV glue.
It must be noted, of course, that the curing glue is in a liquid state when applied.
S2000: the cured layer was rolled using the rolling wheels obtained according to the processing method provided in the above example to obtain the brightness enhancement film 100.
In specific implementation, the cured layer can be irradiated by ultraviolet light to accelerate the curing of the curing adhesive.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (13)
1. The brightness enhancement film is characterized by comprising a substrate and a plurality of prism units arranged on the substrate along a first direction;
any prism unit comprises a first prism and a second prism, the projections of the first prism and the second prism on a plane vertical to the extension direction of the first prism and the second prism are isosceles triangles with vertex angles opposite to the substrate, and the central line from the vertex angle of the first prism to the substrate is superposed with the central line from the vertex angle of the second prism to the substrate;
along a first direction, a plurality of first prisms are arranged at intervals, a plurality of second prisms are sequentially connected, and the height from the reference position of the peak of the first prism to the base is greater than the height from the reference position of the peak of the second prism to the base.
2. The brightness enhancement film according to claim 1, wherein the apex angle of the first prism is in a range of 50 ° to 65 °, and the apex angle of the second prism is in a range of 65 ° to 80 °.
3. The brightness enhancement film according to claim 1, wherein a height from a position where a surface of the first prism intersects with the second prism to the substrate is less than one third of a height from a reference position of a peak of the first prism to the substrate and is greater than 0.
4. The brightness enhancement film according to claim 3, wherein a height from a reference position of a peak of the first prism to the base ranges from 5 μm to 50 μm.
5. The brightness enhancement film according to claim 1, wherein a distance between centerlines of adjacent two of the first prisms is 5 μm to 100 μm.
6. The brightness enhancement film according to claim 1, wherein the substrate has a thickness of 10 to 50 μm or 50 to 100 μm.
7. The brightness enhancement film according to any one of claims 1 to 6, wherein a peak value of a peak of the first prism changes periodically in an extending direction of the first prism.
8. The brightness enhancement film according to claim 7, wherein a peak variation amount of a peak of the first prism is less than 50% of a height from a reference position of the peak of the first prism to the substrate.
9. The brightness enhancement film according to claim 7, wherein a peak value of a peak of the first prism varies by a length of one period in an extending direction of the first prism, which is greater than 50 μm.
10. A backlight module, comprising a light guide plate for guiding light and a brightness enhancement film according to any one of claims 1-9, wherein the light guide plate is stacked with the brightness enhancement film, and the light guide plate is disposed on a side of the brightness enhancement film having the prism unit.
11. A method for processing a rolling wheel is characterized by comprising the following steps:
providing a base wheel, a first cutter and a second cutter;
driving the base wheel to rotate;
driving the first cutter to move along the axial direction of the base wheel and periodically cutting the base wheel to form a plurality of first grooves corresponding to and spaced apart from the first prisms according to any one of claims 1 to 9;
driving the second cutter to move along the axial direction of the base wheel and cutting the base wheel at the same period as the first cutter to form a plurality of second grooves corresponding to and sequentially connected to the second prisms according to any one of claims 1 to 9, thereby obtaining the rolled wheel.
12. A method for processing a rolling wheel is characterized by comprising the following steps:
providing a base wheel and a third tool adapted to the prism unit according to any of claims 1-9;
driving the base wheel to rotate;
and driving the third cutter to move along the axial direction of the base wheel, and periodically cutting the base wheel to form a plurality of third grooves which are matched with the prism units and are sequentially connected, so as to obtain the rolling wheel.
13. A method for processing a brightness enhancement film, comprising:
providing a base material and a curing adhesive, and coating the curing adhesive on the end face of the base material to form a cured layer;
rolling the cured layer using the rolling wheels obtained by the process according to claim 11 or 12 to obtain the brightness enhancement film.
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| CN202111050046.0A CN113917584A (en) | 2021-09-08 | 2021-09-08 | Brightness enhancement film, backlight module, rolling wheel and processing method of brightness enhancement film |
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| CN202111050046.0A CN113917584A (en) | 2021-09-08 | 2021-09-08 | Brightness enhancement film, backlight module, rolling wheel and processing method of brightness enhancement film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114706246A (en) * | 2022-03-28 | 2022-07-05 | 东莞市光志光电有限公司 | Light splitting film and processing method thereof, backlight module, rolling wheel and processing method thereof |
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