CN101398495B

CN101398495B - Composite optical film and manufacturing method thereof

Info

Publication number: CN101398495B
Application number: CN200810176289A
Authority: CN
Inventors: 林义文; 郗任远
Original assignee: AU Optronics Corp
Current assignee: AUO Corp
Priority date: 2008-11-21
Filing date: 2008-11-21
Publication date: 2012-10-03
Anticipated expiration: 2028-11-21
Also published as: CN101398495A

Abstract

The invention relates to a composite optical diaphragm and a manufacturing method thereof. The composite optical film comprises a flexible substrate, a plurality of protruded light-collecting prisms and a plurality of transparent rubber masses. The light collecting prism is arranged on the flexible substrate and used for collecting light. The transparent rubber clusters are respectively arranged between the corresponding light collecting prisms, and a gap area is formed between each transparent rubber cluster and each light collecting prism. The transparent micelle is used for light diffusion and protecting the light collecting prism. The transparent micelle is used for light diffusion and protecting the light collecting prism. The composite optical diaphragm uses a single diaphragm to replace the combination of a plurality of optical diaphragms, thereby simplifying the structure of the backlight module and reducing the manufacturing cost of the backlight module.

Description

Combined optical film piece and manufacturing approach thereof

Technical field

The present invention relates to be applied to the blooming piece of backlight module, particularly a kind of combined optical film piece and manufacturing approach thereof.

Background technology

LCD must rely on the light penetration liquid crystal layer, and human eye just can be observed the influence that liquid crystal layer change constitutes.Except traditional small-sized single color LCD display module adopted the reflection extraneous light, existing LCD all adopted backlight module by liquid crystal layer dorsal part throw light.The light that backlight module provides must penetrate liquid crystal layer equably, and the light that is projected to liquid crystal layer must possess the briliancy of homogeneous.

Consult Fig. 1, it is the diagrammatic cross-section of the display device of prior art.Display device of the prior art mainly comprises backlight module 90 and display panel 94 elements such as grade.Backlight module 90, comprise backlight 91, LGP 92, reflector plate 93, brightening film sheet 95, with diffusion sheet 96.After the light that backlight 91 provides gets into LGP 92, through the reflection of reflector plate 93 and the guiding of LGP 92, make light change direction, and throw toward the direction of brightening film sheet 95 equably.Brightening film sheet 95 makes light concentrate the direction towards display panel 94 through the further optically focused of sheet feeding type, so that backlight module 90 positive brightness strengthen.Yet regularly arranged sheet feeding type and display panel 94 are easy to generate interference fringe (moir é) or rainbow line (rainbow mura), and flaw appears in the image that makes display panel 94 shown.Therefore; On the brightening film sheet 95, diffusion sheet 96 must be added usually, aforesaid interference fringe or rainbow line can be eliminated through its atomizing structure with atomizing structure; And make backlight module 90 Luminance Distribution more even, and also can be used as the protection structure of the sheet feeding type of protection brightening film sheet 95.

Yet aforesaid backlight module needs a plurality of blooming pieces to combine, and just can reach desirable effect backlight, and the combination of a plurality of blooming pieces not only can make the quantity of optical element increase, promote beyond the manufacturing cost, also can increase needed operation of assembling and time.Therefore, how to improve the optics framework of backlight module, reduce optical element quantity, become the important techniques problem.

Summary of the invention

Display device of the prior art, its backlight module must just can reach blast, spread and the function of adding lustre to a plurality of optical element combination, and the structure relative complex also increases manufacturing cost.

In view of the above problems, the objective of the invention is to propose a kind of combined optical film piece and manufacturing approach thereof that is applied to a backlight module, reach blast and diffusion function simultaneously with single optical element.

In order to achieve the above object, the present invention proposes a kind of combined optical film piece, comprises flexible substrate, a plurality of outstanding light-collecting prism and a plurality of transparent micelles.Light-collecting prism is arranged on the flexible substrate, in order to carry out light harvesting.Transparent micelles is disposed at respectively between the corresponding light-collecting prism, and has a void area between each transparent micelles and the light-collecting prism.Transparent micelles spreads in order to carry out light, and the protection light-collecting prism.Combined optical film piece replaces the combination of a plurality of blooming pieces with single diaphragm, has simplified the structure of backlight module, and reduces the cost of manufacture of backlight module.

According to an aspect of the present invention, a kind of combined optical film piece is provided, has comprised: a flexible substrate; A plurality of outstanding light-collecting prism are arranged on this flexible substrate; And a plurality of transparent micelles, be disposed at respectively between the corresponding light-collecting prism, and have a void area between each transparent micelles and the said a plurality of light-collecting prism; The altitude range of said a plurality of light-collecting prism is between 20 millimeters and 25 millimeters; Each transparent micelles is given prominence to said a plurality of light-collecting prism one differences in height; Its scope is between 1 millimeter and 5 millimeters, and the altitude range of this void area is between 1 millimeter and 20 millimeters; And the refractive index difference scope of said a plurality of light-collecting prism and this void area is between 1.35 and 1.65, and the refractive index difference scope of said a plurality of transparent micelles and this void area is also between 1.35 and 1.65.

In order to make aforesaid combined optical film piece, the present invention further proposes a kind of blooming piece method for making, comprises the following step.Transmit flexible substrate continuously, and on flexible substrate, be coated with first colloid continuously.Then first colloid is suppressed with compacting tool set, forming a plurality of light harvesting colloids, and sclerosis light harvesting colloid, to form a plurality of light-collecting prism.Secondly configuration second colloid between light-collecting prism, and second colloid that hardens to form a plurality of transparent micelles, forms a void area simultaneously between each transparent micelles and light-collecting prism.

According to a further aspect in the invention, a kind of blooming piece manufacturing approach is provided, this method comprises the following step: transmit a flexible substrate continuously; On this flexible substrate, be coated with one first colloid continuously; With a compacting tool set this first colloid is suppressed, to form a plurality of light harvesting colloids; The said a plurality of light harvesting colloid that hardens is to form a plurality of light-collecting prism; Configuration one second colloid between said a plurality of light-collecting prism; And this second colloid that hardens, between said a plurality of light-collecting prism, to form a plurality of transparent micelles; Wherein, has a void area between each transparent micelles and the said a plurality of light-collecting prism; The altitude range of said a plurality of light-collecting prism is between 20 millimeters and 25 millimeters; Each transparent micelles is given prominence to said a plurality of light-collecting prism one differences in height; Its scope is between 1 millimeter and 5 millimeters, and the altitude range of this void area is between 1 millimeter and 20 millimeters; And the refractive index difference scope of said a plurality of light-collecting prism and this void area is between 1.35 and 1.65, and the refractive index difference scope of said a plurality of transparent micelles and this void area is also between 1.35 and 1.65.

Useful technique effect of the present invention is the function that a plurality of blooming piece reached in the prior art is combined into single diaphragm, reduces the number of optical elements in the backlight module, and then reduces production costs.Combined optical film piece can further reduce the cost of manufacture of combined optical film piece itself apace in the online making of single product.

Description of drawings

Fig. 1 is the diagrammatic cross-section of the display device of prior art.

Fig. 2 is the diagrammatic cross-section of display device of the present invention.

Fig. 3 is the partial cutaway schematic of Fig. 2 combined optical film piece.

Fig. 4 to Fig. 6 is the stereoscopic synoptic diagram of combined optical film piece of the present invention.

Fig. 7 and Fig. 8 are the partial cutaway schematic of combined optical film piece of the present invention.

Fig. 9 is the schematic perspective view of the production board of combined optical film piece of the present invention.

Figure 10 is the upright side schematic view of the production board of combined optical film piece among Fig. 9.

Figure 11 is the front-view schematic diagram of compacting tool set among Figure 10.

Figure 12 is the schematic perspective view of the production board of combined optical film piece of the present invention.

Figure 13 is the upright side schematic view of the production board of combined optical film piece among Figure 12.

Figure 14 is the upright side schematic view of the production board of combined optical film piece of the present invention.

Figure 15 is the schematic perspective view of the production board of combined optical film piece of the present invention.

Figure 16 is the upright side schematic view of the production board of combined optical film piece among Figure 15.

Wherein, description of reference numerals is following:

90 backlight module 20a, the 20b roller set

91

light source

20c, 20d, 20e, 20f roller set

92 LGPs, 21 first spreading implements

93 reflector plates, 211 storage tanks

94 display panels, 212 nozzles

95 brightening film sheets, 22 compacting tool sets

96 diffusion sheets, 221 concaveconvex structures

10 combined optical film pieces, 23 curing systems

11 flexible substrates, 24 mould release membrances

111 incidence surfaces, 25 second spreading implements

112 exiting surfaces, 251 storage tanks

12 light-collecting prism, 252 nozzles

12a first colloid 253 storage tanks

12b light harvesting colloid 254 rollers

13 transparent micelles, 255 scrapers

13a second colloid 26 thermals source

14 void area, 27 ultraviolet sources

15 diffusion particles

Embodiment

See also Fig. 2 and Fig. 3, it is an embodiment of display device of the present invention and combined optical film piece, discloses a kind of backlight module 90 and is applied to the combined optical film piece 10 of this backlight module 90.Backlight module 90 comprise a backlight 91, a LGP 92, a reflector plate 93, with combined optical film piece 10.Backlight module 90 is in order to provide backlight to a display panel 94, and wherein combined optical film piece 10 is in order to reach diffusion and light harvesting effect, to strengthen positive intensity backlight.Combined optical film piece 10 comprises a flexible substrate 11, a plurality of outstanding light-collecting prism 12 and a plurality of transparent micelles 13.

Flexible substrate 11 is made with light transmissive material, for example: polystyrene (PS), PVC (PVC) or polymethylmethacrylate (PMMA), use for light through and can by the bending, the distortion.This flexible substrate 11 has relative incidence surface 111 and exiting surface 112; Wherein incidence surface 111 usefulness are for the light incident that comes through LGP 92; Through behind the body of flexible substrate 11; This light can be left by exiting surface 112, and penetrates into light-collecting prism 12, a plurality of transparent micelles 13 and display panel 94.

Light-collecting prism 12 is arranged on the exiting surface 112 of flexible substrate 11, and each light-collecting prism 12 protrudes in the height H of exiting surface 112, and its scope can be between 20 millimeters (mm) and 25 millimeters (mm).Light-collecting prism 12 is in order to refraction and focus on this light, makes light going direction concentrate the normal direction of exiting surface 112, reaches the effect of blast.

See also Fig. 3 and Fig. 4, transparent micelles 13 is disposed at respectively between the corresponding light-collecting prism 12.Between adjacent two transparent micelles 13 of same light-collecting prism 12, can be some contact, local contact or do not contact.Have a difference in height h between the tip portion of the top of transparent micelles 13 and corresponding said a plurality of light-collecting prism 12, its scope can be between 1 millimeter (mm) and 5 millimeters (mm).In addition; There is a void area 14 between the mountain valley of the bottom of each transparent micelles 13 and corresponding said a plurality of light-collecting prism 12; The mountain valley of said a plurality of light-collecting prism 12 refers to formed sunk area between the two adjacent light-collecting prism 12; The bottom of transparent micelles 13 refers to the side of transparent micelles 13 towards the mountain valley of said a plurality of light-collecting prism 12, and the height D scope of void area 14 is between 1 millimeter (mm) and 20 millimeters (mm).Wherein, The refractive index difference scope of light-collecting prism 12 and void area 14 can be between 1.35 and 1.65; And the refractive index difference scope of transparent micelles and this void area 14 also can be between 1.35 and 1.65; Make light successfully march to void area 14 with this, get in the transparent micelles 13 by void area 14 again by light-collecting prism 12.Transparent micelles 13 can comprise a plurality of diffusion particles 15 in addition; Be distributed in equably in the transparent micelles 13; The material of diffusion particle 15 can comprise titania or silicon dioxide; In order to break up light and to produce atomizing, the tip portion of avoiding light to concentrate on light-collecting prism 12 leaves, to eliminate or to reduce interference fringe or the rainbow line that regularly arranged light-collecting prism 12 and display panel 94 are produced.In addition, the transparent micelles 13 that protrudes in light-collecting prism 12 can be used as the protection structure simultaneously, avoids light-collecting prism 12 impaired, so need not add screening glass on this combined optical film piece 10.Therefore, combined optical film piece 10 replaces the combination of a plurality of blooming pieces, has simplified the structure of backlight module 90, and reduces the cost of manufacture of backlight module 90.

The formation of transparent micelles 13 after coating colloid between the adjacent light-collecting prism 12 with spreading implement earlier, is carried out hardening process again, makes colloid be hardened to transparent micelles.Transparent micelles 13 can adopt the material with different sclerosis mechanism, for example: photo-hardening material or thermmohardening material.

The photo-hardening material can refer to comprise the photoinduction glue of light initiator; Its by UV-irradiation after; Just can begin other composition of aggregation colloid and sclerosis; The light initiator can comprise different third plug ton ketone (Isopropyl thioxanthone) or 2-hydroxyl-(2 aminomethyl phenyl) acetone materials such as (2-Hydroxy-2methylphenyl propanone), is mixed in the carbamate (urethane), and the present invention is not as limit.

All the other polymerization compositions of thermmohardening material or aforementioned colloid can be the thermohardening type resin; Form by thermmohardening polymkeric substance and organic solvent; The thermohardening type resin is after being heated; Organic solvent is volatilization earlier; The monomer of heat curing copolymer just can begin polymerization, sclerosis, and it can comprise thermohardening type resin epoxy acrylate (Epoxy-Acrylate), Isooctyl acrylate monomer (Isooctyl Acrylate), polyacrylic acid (Poly acrylic acid) or methyl acrylate materials such as (Methyl Acrylate), and the present invention is not as limit.

See also Fig. 5, be not each to all disposing transparent micelles 13 between the adjacent light-collecting prism 12, each transparent micelles 13 can be disposed at each discontinuously between the adjacent light-collecting prism 12, promptly the part adjacent light-collecting prism 12 between do not dispose transparent micelles.

Consult Fig. 6 again, the three-dimensional kenel of transparent micelles 13 is irregular bulk, however the three-dimensional kenel of transparent micelles 13 can change along with spreading implement, so it can be oval strip, irregular strip or oval spherical, the present invention is not as limit.

Consult Fig. 3, Fig. 7 and Fig. 8 again, according to the difference of spreading implement, the section shape of transparent micelles 13 can be ellipse, the lobed ellipse of a side or irregular cloud shape, to strengthen diffusion effect.

See also Fig. 9 and Figure 10, it is the synoptic diagram of the production board of combined optical film piece of the present invention, in order to an embodiment of explanation blooming piece method for making of the present invention, to make combined optical film piece of the present invention.The method is with roller set 20a, and 20b transmits flexible substrate 11 continuously, then is coated with the first colloid 12a continuously on flexible substrate 11 with first spreading implement 21, and the first colloid 12a is for forming the material of light-collecting prism 12.Wherein, First spreading implement 21 mainly comprises storage tank 211 and nozzle 212, and storage tank 211 is in order to the ccontaining

first colloid

12a, and 212 at nozzle has a slit; And the bearing of trend of slit is vertical with the direction that flexible substrate 11 is transmitted; Use for the first colloid 12a and pass through, and arrive on the flexible substrate 11 that continues to move, make flexible substrate 11 surface coated one decks first colloid 12a.

Then suppress, to form a plurality of light harvesting colloid 12b with 22 couples first colloid 12a of compacting tool set.See also Figure 11; The column structure of compacting tool set 22 for continuing to rotate; And has concaveconvex structure 221 on its outer peripheral face, when compacting tool set 22 contact and apply pressure to behind the first colloid 12a, through the following recess and the epirelief place of concaveconvex structure 221; Making the colloid 12a plastotype of winning is the kenel of light-collecting prism 12, constitutes aforesaid light harvesting colloid 12b.Then, with curing system 23 sclerosis light harvesting colloid 12b, form a plurality of light-collecting prism 12.The kenel of curing system 23 is looked the sclerosis mechanism of first colloidal materials and is decided, if composition is main with thermmohardening type resin, then curing system 23 is a thermal source; If composition comprises the light initiator, 23 of curing systems are ultraviolet source, and add that thermal source is to quicken the organic solvent volatilization.

Consult Fig. 9 and Figure 10 again, then with roller set 20a, 20b upset flexible substrate 11 and light-collecting prism 12, and continue to transmit.Simultaneously, with another group roller set 20c, 20d, 20e, 20f transmit a mould release membrance 24 continuously, are coated with the second colloid 13a continuously on mould release membrance 24 with second spreading implement 25, and the second colloid 13a is for forming the material of transparent micelles 13.Wherein, second spreading implement 25 mainly comprises storage tank 251 and nozzle 252, and storage tank 251 is in order to the ccontaining

second colloid

13a, and 252 at nozzle has a slit, and the bearing of trend of slit is vertical with the direction that mould release membrance 24 is transmitted.Then make the flexible substrate 11 after the upset near each other, and direction and speed that flexible substrate 11 and mould release membrance 24 are transmitted are identical with mould release membrance 24.The distance of flexible substrate 11 and mould release membrance 24; Should be more than or equal to the height of light-collecting prism 12; Simultaneously, light-collecting prism 12 only tip portion contacts the second colloid 13a, disposes the second colloid 13a between light-collecting prism 12 with this; And the mountain valley and the second colloid 13a that the make adjacent light-collecting prism 12 not void area 14 of filler of being separated by is like Fig. 3, Fig. 7 or shown in Figure 8.At last; With curing system 26, the 27 sclerosis second colloid 13a,, form void area 14 simultaneously between each transparent micelles 13 and light-collecting prism 12 to form a plurality of transparent micelles 13; After the second colloid 13a is hardened to transparent micelles 13, removes mould release membrance 24 and can accomplish blooming piece 10 of the present invention.The kenel of curing system is looked the sclerosis mechanism of the second colloid 13a material and is decided, if composition is main with thermmohardening type resin, then curing system only needs a thermal source 26; If composition comprises the light initiator, curing system needs thermal source 26 and ultraviolet source 27, and wherein the second colloid 13a, hardens to accomplish with ultraviolet source 27 irradiations with volatilization of acceleration organic solvent and reduced volume earlier by thermal source 26 heating again.In addition; The second colloid 13a does not need to be extruded by second spreading implement 25 constantly; Second spreading implement 25 can be extruded the second colloid 13a intermittently; The second colloid 13a is stained with discontinuously sticks between light-collecting prism 12, to form the transparent micelles 13 of discontinuous strip, bulk or irregular strip, bulk.

Because after flexible substrate 11 is reversed; Just make the second colloid 13a be disposed between the light-collecting prism 12, receive gravity traction, can be extruded by second spreading implement 25 again for fear of the second colloid 13a; So the coefficient of viscosity scope of the second colloid 13a is best between 200cps and 800cps; It can make the second colloid 13a before by sclerosis, be attached to light-collecting prism 12, can not receive gravity traction and drips, and can successfully be extruded by second spreading implement 25.

See also Figure 12 and Figure 13, it is the synoptic diagram of the production board of combined optical film piece of the present invention, in order to the method for making of explanation blooming piece of the present invention, to make combined optical film piece of the present invention.In the present embodiment; The step of making light-collecting prism 12 is roughly identical with Fig. 9, the described embodiment of Figure 10; With roller set 20a, 20b transmits flexible substrate 11 continuously, then is coated with the first colloid 12a continuously on flexible substrate 11 with first spreading implement 21 earlier.Then suppress, to form a plurality of light harvesting colloid 12b with 22 couples first colloid 12a of compacting tool set.At last, with curing system 23 sclerosis light harvesting colloid 12b, form a plurality of light-collecting prism 12.

Follow with

roller set

20a, 20b upset flexible substrate 11 and light-collecting prism 12, and continue to transmit.Directly implant the second colloid 13a from lower to upper between the said a plurality of light-collecting prism 12 after the upset with second spreading implement 25; Second spreading implement 25 comprises storage tank 251 and nozzle 252; The second colloid 13a is placed in the storage tank 251; And implant between the light-collecting prism 12 via nozzle 252, and make mountain valley and the second colloid 13a of the light-collecting prism 12 after the upset void area 14 of being separated by, like Fig. 3, Fig. 7 or shown in Figure 8.Wherein, nozzle 252 can comprise a plurality of spray orifices, and the sunk area between the corresponding adjacent light-collecting prism 12 is directly implanted the second colloid 13a.Nozzle 252 also can comprise single slit, the second colloid 13a is coated the tip portion of light-collecting prism 12.The coefficient of viscosity scope of the second colloid 13a can be attached on the light-collecting prism 12 the second colloid 13a, and can be extruded by second spreading implement 25 smoothly between 200cps and 800cps, to be the best before by sclerosis.At last, with the curing system second colloid 13a that hardens,, form void area 14 simultaneously between each transparent micelles 13 and light-collecting prism 12 to form a plurality of transparent micelles 13.Wherein, the second colloid 13a shines to harden with ultraviolet source 27 earlier, avoids the second colloid 13a to continue downward landing, drip, and then again by thermal source 26 heating, to quicken also reduced volume of organic solvent volatilization, accomplishes sclerosis at last.

See also Figure 14, it is the synoptic diagram of the production board of combined optical film piece of the present invention, in order to an embodiment of explanation blooming piece method for making of the present invention, to make combined optical film piece of the present invention.The step of in the present embodiment, making light-collecting prism 12 and transparent micelles 13 is roughly identical with Figure 12, the described embodiment of Figure 13.

In present embodiment, second spreading implement 25 that is used to be coated with the second colloid 13a comprises open storage tank 253, roller 254 and scraper 255.Storage tank 253 is in order to the ccontaining second colloid 13a, and roller 254 then part is soaked among the second colloid 13a, and continues to rotate to be stained with the glutinous second colloid 13a in its surface.Scraper 255 is stained with in order to wiper and is sticked second unnecessary on the roller 254 colloid 13a, to control the thickness of the second colloid 13a.Roller 254 continues to rotate, and its tangential velocity should equal the speed that flexible substrate 11 is transmitted.The second colloid 13a that sticks in roller 254 is stained with in light-collecting prism 12 contacts after the upset; Make between the light-collecting prism 12 after the second colloid 13a is overturn by roller 254 implantation with this; Make the tip portion of the light-collecting prism 12 after the upset contact the second colloid 13a; And the mountain valley and the second colloid 13a that make the light-collecting prism 12 after the upset void area 14 of being separated by, like Fig. 3, Fig. 7 or shown in Figure 8.

Consult Figure 15 and Figure 16 again, be the synoptic diagram of the production board of combined optical film piece of the present invention, in order to an embodiment of explanation blooming piece method for making of the present invention, to make combined optical film piece of the present invention.In the present embodiment, the step of making light-collecting prism 12 is roughly identical with previous embodiment, and earlier with roller set 20a, 20b transmits flexible substrate 11 continuously, then is coated with the first colloid 12a continuously on flexible substrate 11 with first spreading implement 21.Then suppress, to form a plurality of light harvesting colloid 12b with 22 couples first colloid 12a of compacting tool set.At last, sclerosis light harvesting colloid 12b forms a plurality of light-collecting prism 12.

Then splash between the light-collecting prism 12 of the second colloid 13a before upset with second spreading implement 25; Then in company with flexible substrate 11 and said a plurality of light-collecting prism 12; The second colloid 13a in the lump overturns; Make the second colloid 13a flow to the tip portion of a little light-collecting prism 12 after the upset, and the void area 14 of being separated by of the second colloid 13a after the mountain valley that makes the said a plurality of light-collecting prism 12 after the upset and the upset.In order the second colloid 13a can be flowed smoothly and prismatic 12 drippages of light-self-collecting apace not, the coefficient of viscosity scope of the second colloid 13a is being the best between 100cps and 200cps.In addition, the second colloid 13a comprises organic solvent in addition, so in the configuration of curing system; Earlier the second colloid 13a is heated with thermal source 26; With the volatilization organic solvent, make organic solvent gas push the second colloid 13a, enlarge void area 14 and dwindle the volume of the second colloid 13a; Just with the ultraviolet source 27 irradiations second colloid 13a, make it be hardened to transparent micelles 13 at last.

Claims

1. A composite optical diaphragm, comprising:

a flexible substrate;

a plurality of protruding light-collecting prisms disposed on the flexible substrate; and

A plurality of transparent micelles are respectively arranged between the corresponding light-collecting prisms, and there is a gap area between each transparent micelles and the plurality of light-collecting prisms;

The height range of the plurality of light-collecting prisms is between 20 mm and 25 mm, and each transparent gel group protrudes a height difference between the plurality of light-collecting prisms, and the range is between 1 mm and 5 mm, and the The height of the void area ranges between 1 mm and 20 mm; and

The refractive index difference range between the plurality of light collecting prisms and the void area is between 1.35 and 1.65, and the refractive index difference range between the plurality of transparent micelles and the void area is also between 1.35 and 1.65.

2. The composite optical film as claimed in claim 1, wherein the plurality of transparent micelles further comprise a plurality of diffusion particles, the material of which comprises titanium dioxide or silicon dioxide.

3. The composite optical film as claimed in claim 1, wherein the material of the plurality of transparent micelles comprises a thermosetting material.

4. The composite optical film according to claim 3, wherein the thermosetting material is epoxy acrylate, isooctyl acrylate, polyacrylic acid or methyl acrylate.

5. The composite optical film as claimed in claim 1, wherein the material of the plurality of transparent micelles comprises a photohardening material.

6. The composite optical film as claimed in claim 5, wherein the light-hardening material is isopropanthone or 2-hydroxy-(2-methylphenyl)acetone.

7. A method for manufacturing an optical film, comprising the following steps:

continuously conveying a flexible substrate;

Continuously coating a first colloid on the flexible substrate;

pressing the first colloid with a pressing mold to form a plurality of light-collecting colloids;

hardening the plurality of light-collecting colloids to form a plurality of light-collecting prisms;

disposing a second colloid between the plurality of light-collecting prisms; and

hardening the second colloid to form a plurality of transparent micelles between the plurality of light-collecting prisms;

Wherein, there is a gap area between each transparent micelles and the plurality of light-collecting prisms;

The height range of the plurality of light-collecting prisms is between 20 mm and 25 mm, and each transparent gel group protrudes a height difference between the plurality of light-collecting prisms, and the range is between 1 mm and 5 mm, and the The height of the void area ranges between 1mm and 20mm; and

8. The method for manufacturing an optical film as claimed in claim 7, wherein the viscosity range of the second colloid is between 200cps and 800cps, and the method further comprises:

turning over the flexible substrate and the plurality of light collecting prisms;

Continuously conveying a release film;

Wherein, the step of disposing the second colloid between the plurality of light-collecting prisms is:

Coating the second colloid on the release film;

make the flexible base material and the release film close to each other after turning over; and

making the tips of the inverted plurality of light-collecting prisms contact the second colloid, and separating the valleys of the inverted plurality of light-collecting prisms from the second colloid by the gap region; and

Peel off the release film.

9. The method for manufacturing an optical film as claimed in claim 7, wherein the viscosity range of the second colloid is between 200cps and 800cps, and the method further comprises:

Wherein, the step of arranging the second colloid between the plurality of light-collecting prisms is to implant the second colloid between the turned-over light-collecting prisms with nozzles or rollers.

10. The optical film manufacturing method according to claim 7, wherein the viscosity range of the second colloid is between 200cps and 800cps, and the method further comprises:

Wherein, the step of arranging the second colloid between the plurality of light-collecting prisms is to make the tips of the turned-over light-collecting prisms contact the second colloid, and make the turned-over plurality of light-collecting prisms contact the second colloid. The valley of the light-collecting prism is separated from the second colloid by the gap region.

11. The method for manufacturing an optical film as claimed in claim 7, wherein the viscosity range of the second colloid is between 100cps and 200cps, and the method further comprises:

Dropping the second colloid between the plurality of light-collecting prisms before turning over with a nozzle;

along with the flexible substrate and the plurality of light-collecting prisms, turning over the second colloid; and

The second colloid flows to the tips of the inverted light-collecting prisms, and the valleys of the inverted light-collecting prisms are separated from the inverted second colloid by the gap area.

12. The method for manufacturing an optical film as claimed in claim 7, wherein the second colloid further comprises an organic solvent, and the method further comprises after configuring the second colloid:

The second colloid is heated to volatilize the organic solvent and reduce the volume of the second colloid.