CN106291785A - Lens arra manufacture method and birefringent lens array - Google Patents
Lens arra manufacture method and birefringent lens array Download PDFInfo
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- CN106291785A CN106291785A CN201610969393.6A CN201610969393A CN106291785A CN 106291785 A CN106291785 A CN 106291785A CN 201610969393 A CN201610969393 A CN 201610969393A CN 106291785 A CN106291785 A CN 106291785A
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- Prior art keywords
- birefringent
- layer
- base board
- flexible base
- birefringent material
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
Abstract
The invention provides a kind of lens arra manufacture method and birefringent lens array, belong to Display Technique field.This lens arra manufacture method includes: the coiled material surface at flexible base board forms oriented layer, and described alignment layer surface has the groove on preset direction；Birefringent material layer is formed at described alignment layer surface coating birefringent material；By volume to volume technique, the coiled material of lens coating is fitted with described birefringent material layer；Described birefringent material layer is carried out orientation so that the molecule of described birefringent material arranges according to described preset direction；Described birefringent material layer is solidified so that being attached to described lens coating surface through the described birefringent material of orientation to form birefringent lens array.Compared to existing lens arra manufacture method, the lens arra manufacture method that the present invention provides significantly reduces the production cost of birefringent lens array, improves production efficiency, and is conducive to manufacturing the birefringent lens array of large-size.
Description
Technical field
The present invention relates to Display Technique field, in particular to a kind of lens arra manufacture method and birefringent lens
Array.
Background technology
At present, bore hole 3D stereo display technique receives significant attention because possessing good viewing freedom.In all kinds of realities
In the technology of existing bore hole 3D stereo display, use birefringent lens array (Birefringent Lens Array, BLA) collocation
The technology of liquid crystal light valve (Switch Cell) owing to possessing 2D/3D and freely switch, good 2D display quality (the most lossless
The major optical characterisitic parameters such as resolution, brightness, contrast) and preferable 3D display characteristic (high brightness, low crosstalk etc.) by industry
Boundary extensively payes attention to.
In the stereo display technique using birefringent lens array (BLA) collocation liquid crystal light valve (Switch Cell), double
The making of array of refractive lenses is the key link place of whole technology.Existing birefringent lens array manufacture method is typically
At the birefringent material of the surface coating liquid crystalline state of PI glass, then the birefringent material overlying lens coating in coating, through orientation, admittedly
Change and make birefringent lens array after stripping technology.Wherein, lens coating is coiled material, and PI glass is sheet material, needs when both arrange in pairs or groups
Lens coating cut into sheet material by coiled material, and to be limited by the size of PI glass breadth, the reality of the birefringent lens array of making
Border size is less than PI glass size, and products application is restricted, and adaptability is the strongest.Additionally, due to PI glass is double in making
Belonging to auxiliary material during array of refractive lenses, i.e. according to offal treatment after single use, sheet material reclaims difficulty, cost
High.
Summary of the invention
In consideration of it, it is an object of the invention to provide a kind of lens arra manufacture method and birefringent lens array, to have
Effect ground improves the problems referred to above.
To achieve these goals, the technical solution used in the present invention is as follows:
First aspect, embodiments provides a kind of lens arra manufacture method, and described method includes: at flexible base
The coiled material surface of plate forms oriented layer, and wherein, described alignment layer surface has the groove on preset direction；At described oriented layer table
Topcoating cloth birefringent material forms birefringent material layer, and wherein, described birefringent material is for being in mesomorphic birefringent material；
By volume to volume technique, the coiled material of lens coating is fitted with described birefringent material layer；Described birefringent material layer is carried out
Orientation is so that the molecule of described birefringent material arranges according to described preset direction；Described birefringent material layer is solidified with
Make to be attached to described lens coating surface through the described birefringent material of orientation and form birefringent lens array.
In preferred embodiment of the present invention, above-mentioned by volume to volume technique by the coiled material of lens coating and described birefringence
Material layer carries out the step fitted, including: by the coiled material of the coiled material of lens coating with the flexible base board being coated with birefringent material layer
Carry out para-position；Rolling process is used to be rolled up by the coiled material of the coiled material of lens coating with the flexible base board being coated with birefringent material layer
To volume laminating.
In preferred embodiment of the present invention, above-mentioned forms birefringence at described alignment layer surface coating birefringent material
The step of material layer, including: form birefringence material by slot coated device at described alignment layer surface coating birefringent material
The bed of material.
In preferred embodiment of the present invention, above-mentioned forms birefringence at described alignment layer surface coating birefringent material
The step of material layer, including: form birefringence by Multi needle apparatus for coating at described alignment layer surface coating birefringent material
Material layer.
In preferred embodiment of the present invention, above-mentioned described birefringent material layer is solidified so that through orientation
After described birefringent material is attached to the step that described lens coating surface forms birefringent lens array, also include: by described
Birefringent lens array from described oriented layer away from the sur-face peeling of described flexible base board.
In preferred embodiment of the present invention, the above-mentioned coiled material surface at flexible base board forms oriented layer, wherein, described
Alignment layer surface has the step of the groove on preset direction, including: the coiled material surface at described flexible base board prints oriented layer；
Described oriented layer is carried out friction away from the surface of flexible base board and forms the groove on preset direction.
In preferred embodiment of the present invention, the above-mentioned coiled material surface at described flexible base board prints the step of oriented layer
Suddenly, including: the coiled material of described flexible base board is launched in the first direction；Control the printing head of inkjet-printing device along second party
To motion and to the surface spraying alignment layer material of described flexible base board, wherein, the thickness of described alignment layer material spraying is by institute
The viscosity stating the development rate of the coiled material of flexible base board, the movement velocity of described printing head and described alignment layer material determines；
The alignment layer material being sprayed on described flexible base board surface is carried out heat cure and forms oriented layer.
In preferred embodiment of the present invention, the above-mentioned printing head controlling inkjet-printing device moves in a second direction
And to the step of the surface spraying alignment layer material of described flexible base board, including: control the printing head edge of inkjet-printing device
Second direction is moved and during the surface spraying alignment layer material of described flexible base board, to being sprayed on described flexible base board
The alignment layer material on surface carries out precuring.
In preferred embodiment of the present invention, above-mentioned described oriented layer is carried out, away from the surface of flexible base board, the shape that rubs
After the step of the groove on one-tenth preset direction, also include: use ultrasound wave dry-cleaning machine that the oriented layer after friction is carried out
Clean.
Second aspect, the embodiment of the present invention additionally provides a kind of birefringent lens array, uses above-mentioned lens arra system
Making method manufacture, described birefringent lens array includes: lens coating and birefringent material layer, and described birefringent material layer is attached to
The one side of described lens coating, the birefringent material molecule in described birefringent material layer arranges according to preset direction.
The coiled material of the lens arra manufacture method employing flexible base board that the embodiment of the present invention provides is as auxiliary material, right by volume
The technique of volume manufactures birefringent lens array, overcomes in prior art because using the PI glass of reduced size cannot produce size
The difficulty of bigger birefringent lens array, the application for the birefringent lens array of large-size provides possibility, the most also
Advantageous as the recovery of the flexible base board of auxiliary material, reduce the production cost of birefringent lens array.Additionally, the present embodiment
In, it is not necessary to lens coating is first cut into PI glass size and matches, be effectively improved the production effect of birefringent lens array
Rate.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by embodiment required use attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, and it is right to be therefore not construed as
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to this
A little accompanying drawings obtain other relevant accompanying drawings.
Fig. 1 is the structural representation of the birefringent lens array that existing birefringent lens array manufacture method makes；
The method flow diagram of the lens arra manufacture method that Fig. 2 provides for first embodiment of the invention；
The flow chart of step S21 in Fig. 2 that Fig. 3 provides for first embodiment of the invention；
The flow chart of step S31 in Fig. 3 that Fig. 4 provides for first embodiment of the invention；
The inkjet-printing device that controls that Fig. 5 provides for first embodiment of the invention is determined in the coiled material surface printing of flexible base board
To the process chart of layer；
Fig. 6 carries out heat cure for what first embodiment of the invention provided to the alignment layer material being sprayed on flexible base board surface
Process chart；
The process chart that oriented layer is carried out friction orientation that Fig. 7 provides for first embodiment of the invention；
The process chart that the oriented layer after friction orientation is carried out that Fig. 8 provides for first embodiment of the invention；
The coiled material by the coiled material of lens coating Yu flexible base board that Fig. 9 provides for first embodiment of the invention carries out volume to volume roller
Overlay the process chart of conjunction；
The flow chart of step S23 in Fig. 2 that Figure 10 provides for first embodiment of the invention；
The process chart that birefringent material layer is carried out orientation and solidification that Figure 11 provides for first embodiment of the invention；
Birefringent lens array is peeled off and the process chart of cutting by Figure 12 for what first embodiment of the invention provided；
The structural representation of the birefringent lens array that Figure 13 provides for second embodiment of the invention.
In figure: 11-PI glass；12-birefringent material；13-lens coating；50-printing head；52-substrate；54-oriented layer；
60-high temperature tunnel furnace；70-cylinder；72-groove；80-cleaning equipment；90-apparatus for coating；92-friction roller；94-groove；96-
Dry-cleaning machine；98-rolling device；100-flexible base board；110-continuous tunnel furnace；112-ultraviolet continuous tunnel furnace；120-peels off wheel；122-
Material collecting device；124-cavity；130-birefringent lens array；200-birefringent material layer；300-lens coating.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Generally implement with the present invention illustrated described in accompanying drawing herein
The assembly of example can be arranged with various different configurations and design.
Therefore, detailed description to the embodiments of the invention provided in the accompanying drawings is not intended to limit claimed below
The scope of the present invention, but be merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing
Individual accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.
In describing the invention, it should be noted that term " on ", D score, "left", "right", " interior ", the instruction such as " outward "
Orientation or position relationship be based on orientation shown in the drawings or position relationship, or this invention product use time usually put
Orientation or position relationship, be for only for ease of describe the present invention and simplify describe rather than instruction or hint indication device
Or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Describe additionally, term " first ", " second " etc. are only used for distinguishing, and it is not intended that indicate or hint relative importance.Term
" parallel " is not offered as requiring that parts are absolute parallel, but can be slightly tilted.
As it is shown in figure 1, the surface coating liquid that existing birefringent lens array manufacture method is typically at PI glass 11 is brilliant
The birefringent material 12 of state, the stain overlay area in Fig. 1 represents the birefringent material 12 of coating, then the birefringence material in coating
Material overlying lens coating 13, makes birefringent lens array after orientation, solidification and stripping technology.Wherein, lens coating 13 is coiled material,
PI glass 11 is sheet material, needs by coiled material, lens coating 13 is cut into sheet material, and be limited by PI glass 11 breadth when both arrange in pairs or groups
Size, the actual size of the birefringent lens array of making is more smaller than PI glass 11, and products application is restricted, suitable
Answering property is the strongest.Additionally, due to PI glass 11 belongs to auxiliary material, after single use during making birefringent lens array
I.e. according to offal treatment, sheet material reclaims difficulty, and cost is high.In order to improve the problems referred to above, embodiments provide one
Lens arra manufacture method.
As in figure 2 it is shown, the lens arra manufacture method that first embodiment of the invention provides at least includes that step S21 is to step
S25。
Step S21, the coiled material surface at flexible base board forms oriented layer, and wherein, described alignment layer surface has presets side
Groove upwards.
In the present embodiment, flexible parent metal can be flexible glass, polyethylene terephthalate (Polyethylene
Terephthalate, PET), PEN (Polyethylene Naphthalate, PEN), Merlon
(Polycarbonate, PC), polyether sulfone (Polyether Sulfone, PES), polyimides (Polyimide, PI), compound
The base materials such as material film (Fiber Reinforced Plastic, FRP).It should be noted that flexible parent metal needs orientation
Layer material has good adhesive force, and has good heat stability.Compared to existing using sheet materials such as glass as auxiliary material
Birefringent lens array manufacture method, replaces sheet material with the most economic flexible parent metal, and cost is lower and is conducive to reclaiming, effectively
Reduce production cost.
It is understood that the surface of the groove having on preset direction of oriented layer be oriented layer away from flexible base board
Surface.
Concrete, as it is shown on figure 3, step S21 may comprise steps of S31 and step S32.
Step S31, the coiled material surface at described flexible base board prints oriented layer.
In the present embodiment, can by by the alignment layer material even application of liquid at a side surface of flexible base board, Gu
Oriented layer is formed after change.Directly membranaceous oriented layer can also be printed on the coiled material surface of flexible base board by transfer printing process.
In order to improve production efficiency, the present embodiment can preferably employ the ink-jet printing process coiled material surface at flexible base board
Form oriented layer.Now, as shown in Figure 4, step S31 may comprise steps of S41 to step S43.
Step S41, launches in the first direction by the coiled material of described flexible base board.
Step S42, the printing head controlling inkjet-printing device moves and in a second direction to the table of described flexible base board
Face spraying alignment layer material.
Fig. 5 shows the schematic diagram controlling inkjet-printing device at the coiled material surface printing oriented layer of flexible base board.Such as Fig. 5
Shown in, when flexible base board 100 coiled material be rotated in around w direction X-direction at the uniform velocity launch time, the printing head of inkjet-printing device
50 move back and forth in the Y direction, and the alignment layer material even application of liquid is at a side surface of flexible base board 100.Need explanation
Being that X-direction i.e. represents first direction, Y-direction i.e. represents second direction.Wherein, alignment layer material spraying thickness affect because of
Element includes the development rate of the coiled material of flexible base board 100, the movement velocity of printing head 50 and the viscosity of alignment layer material, printing
The air pressure of shower nozzle 50, the factor such as solid content composition height of alignment layer material.In the present embodiment, the alignment layer material of liquid is permissible
For polyamic acid solution or polyimides (polyimide, PI) solution.
It should be noted that in order to prevent the alignment layer material of spraying from being polluted by the impurity in environment before curing, in control
The printing head 50 of inkjet-printing device processed moves and in a second direction to the surface spraying alignment layer material of flexible base board 100
During, need the alignment layer material being sprayed on flexible base board 100 surface is carried out precuring, to add quick-dissolving agent evaporation.Such as,
The detailed description of the invention of precuring can be: is set to preheat platform by the substrate 52 placing the coiled material of flexible base board 100, in control
The printing head 50 of inkjet-printing device processed moves and in a second direction to the surface spraying oriented layer material of described flexible base board 100
Maintain certain temperature during material, to accelerate to be sprayed on the solvent evaporation of the alignment layer material on flexible base board 100 surface, subtract
The impact of dust fall before few solvent volatilization.
Step S43, carries out heat cure and forms oriented layer the alignment layer material being sprayed on described flexible base board surface.
In order to remove the solvent in the alignment layer material being sprayed on flexible base board 100 surface, alignment layer material is thoroughly solid
Change and form oriented layer 54, can further the alignment layer material being sprayed on flexible base board 100 surface after precuring be entered
Row heat cure, makes the oriented layer 54 of formation be adhering closely to the surface of flexible base board 100.Such as, above-mentioned heat cure is concrete real
The mode of executing can be: by high temperature tunnel furnace 60, the alignment layer material being sprayed on flexible base board surface is carried out heat treatment, the most such as
Shown in Fig. 6, by the flexible base board 100 being coated with alignment layer material after precuring along the direction of arrow shown in Fig. 6 through too high
Temperature continuous tunnel furnace 60, makes the oriented layer 54 of formation be closely adhered on the surface of flexible base board 100.Above-mentioned high temperature tunnel furnace 60 is permissible
Employing non-contact infrared heats.When the birefringent lens array that the present embodiment ultimately forms is non-electrical device, it is not necessary to relatively
Big tilt angle, therefore, can use relatively low temperature when heat cure.
Step S32, carries out friction to described oriented layer away from the surface of flexible base board and forms the groove on preset direction.
The oriented layer 54 on flexible base board 100 surface needs after being fully cured the oriented layer formed is carried out friction orientation.
As a kind of embodiment, the friction orientation of oriented layer can be used traditional mechanical friction, such as, as it is shown in fig. 7, by specific
Villus cloth (cotton, nylon or staple fibre) be attached to the outer surface of cylinder, relative by between cylinder 70 with oriented layer 54
Motion realizes the mechanical friction of oriented layer 54, at oriented layer 54 away from the ditch on the surface formation preset direction of flexible base board 100
Groove 72.The direction of arrow shown in Fig. 7 can represent the direction of motion of flexible base board 100.Need to illustrate that this groove 72 is miniature ditch
Groove, its yardstick is in molecular level.Above-mentioned preset direction i.e. determines the differently-oriented directivity of birefringent material molecule, therefore, friction side
Depending on needs are according to concrete application demand.Such as, when the birefringent lens array made coordinates the rotatory device of about 90 degree,
When 2D/3D switchable autostereoscopic display field, to realize showing normal 2D image under rotatory device closed mode, the most in advance
Set direction i.e. frictional direction should be parallel to the light direction of 2D display module, i.e. go up the direction of polaroid light transmission shaft.
After oriented layer 54 is carried out mechanical friction, substantial amounts of dust can be produced.Therefore, above-mentioned to described oriented layer 54 away from
After the surface of flexible base board 100 carries out the step of the groove 72 on friction formation preset direction, also include determining after friction
It is carried out to layer 54.Cleaning way has multiple, including dry clean and wet-cleaned such as washing.As shown in Figure 8, oriented layer is worked as
54 when being directly printed on flexible base board 100 surface, for producing the problems such as oriented layer comes off, cleaning equipment 80 in prevention water-washing process
Can preferentially use ultrasound wave dry-cleaning machine.Additionally, due to wet-cleaned needs substantial amounts of consumable goods, such as deionized water and
Its chemical agent etc., use dry-cleaning machine to save substantial amounts of cost compared to employing wet-cleaned.
Step S22, forms birefringent material layer at described alignment layer surface coating birefringent material, wherein, described two-fold
Penetrate material for being in mesomorphic birefringent material.
In the present embodiment, the birefringent material being coated with is for being in mesomorphic liquid crystal material.As it is shown in figure 9, can lead to
Cross apparatus for coating 90 and form birefringent material layer 200 through oriented layer 54 surface of friction orientation coating birefringent material.
As a kind of embodiment, can be coated with through oriented layer 54 surface of friction orientation by slot coated device
Birefringent material forms birefringent material layer 200.Slot coated device includes the coating head with slit.In coating process, logical
Overregulate the viscosity of liquid crystal material, liquid crystal material injects the speed of coating head, slit seam is wide, coating head is relative to oriented layer 54
Movement velocity and coating head distance oriented layer 54 away from the height on the surface of flexible base board 100 can control to be formed double
The thickness of birefringent material layer 200.
As another embodiment, can be by Multi needle apparatus for coating at described oriented layer 54 surface coating birefringence
Material forms birefringent material layer 200.Multi needle apparatus for coating can include the coating head with multiple hollow pinhead.Coated
Cheng Zhong, can regulate the width of formed birefringent material layer 200 by the quantity regulating the hollow pinhead that coating head is used
Degree.For example, it is possible to control the width of formed birefringent material layer 200 by the way of dismounting or blocking portion hollow pinhead
Degree.By the internal diameter of hollow pinhead in regulation coating head, the hollow pinhead extrusion speed of liquid crystal material, coating head relative to fixed
Institute's shape can be controlled away from the height on the surface of flexible base board 100 to the movement velocity of layer 54 and hollow pinhead distance oriented layer 54
The thickness of the birefringent material layer 200 become.
Apparatus for coating 90 such as slot coated device or Multi needle apparatus for coating that the present embodiment uses are automatic coating
Device.The control accuracy of the distance between coating head and oriented layer 54 surface of automatic coating device is higher, and coating speed is very fast,
Coating process is difficult in liquid crystal material introduce air bubble.It addition, compared to hand coatings mode, the liquid of automatic coating device
The control accuracy of brilliant material usage is the highest, advantageously reduces the consumption being coated with liquid crystal material, it is to avoid liquid crystal material is coated with
The most excessive cause waste, it is adaptable to the large-scale production of birefringent lens array.
Step S23, is fitted the coiled material of lens coating with described birefringent material layer by volume to volume technique.
Before the coiled material of lens coating and described birefringent material layer being carried out the step fitted by volume to volume technique, also need
Lens coating is carried out friction orientation, in order to the orientation of follow-up birefringent material molecule.To the frictional direction of lens coating with right
The frictional direction of oriented layer 54 is identical or contrary, also to form the groove on preset direction on lens coating surface.
Such as, as it is shown in figure 9, the outer circumference surface of the friction roller 92 of rubbing machine be pasted with friction cloth (as nylon, cotton or
Staple fibre etc.), when the coiled material of lens coating 300 launches in the arrow a direction shown in Fig. 9, can be according to the side of mechanical friction
Formula uses the above-mentioned friction roller 92 being pasted with friction cloth to rub lens coating 300 surface launched.Lens coating 300 is entered
During row friction orientation, the setting of its frictional direction should meet following condition: when the flexible base board being coated with birefringent material layer 200
100 and after lens coating 300 volume to volume fitted, the oriented layer 54 on the frictional direction of lens coating 300 and flexible base board 100
Frictional direction is identical or contrary, the bearing of trend of the groove 72 that the most above-mentioned oriented layer 54 mantle friction is formed and lens coating 300 table
The bearing of trend of the groove 94 that face friction is formed is identical.
But, through the research of inventor with repeatedly it is demonstrated experimentally that the orientation of birefringent material is not had by the friction of lens coating 300
There is significantly help.On the one hand it is that birefringent material layer 200 is relatively thin, the ditch to the preset direction that oriented layer 54 friction orientation is formed
Groove 72 disclosure satisfy that the orientation of birefringent material molecule；Other direction, compared to oriented layer 54, the hardness of lens coating 300 is relatively big,
Lens coating 300 is carried out the friction effect that friction orientation is difficult to reach, and the groove 94 formed is less, divides birefringent material
The help of sub-orientation is less.Therefore, in a kind of preferred embodiment of the present invention, eliminate the carrying out to lens coating 300 and rub
Wipe the step of orientation, beneficially shortened process, reduce equipment cost and energy consumption.
It addition, for guaranteeing the cleanliness factor of lens coating 300 before volume to volume laminating, by the coiled material of lens coating 300 with described
Before birefringent material layer 200 is fitted, can first the lens coating 300 after launching be carried out.Such as, disappear to reduce
Consumption, cost-effective, can use dry-cleaning machine 96 to launch after lens coating 300 be carried out.
Concrete, as shown in Figure 10, step S23 may comprise steps of S101 and step S102.
Step S101, carries out para-position by the coiled material of the coiled material of lens coating with the flexible base board being coated with birefringent material layer.
Owing to lens coating 300 and flexible base board 100 are coiled material, lens coating 300 and flexible base board 100 therefore need not be considered
The para-position of length direction, only in the direction of the width lens coating 300 and flexible base board 100 need to be carried out para-position so that lens coating
300 surfaces covering the birefringent material layer 200 formed on flexible base board 100.
Step S102, uses rolling process by the volume of the coiled material of lens coating with the flexible base board being coated with birefringent material layer
Material carries out volume to volume laminating.
After lens coating 300 is covered the surface of the birefringent material layer 200 formed on flexible base board 100, so that
Lens coating 300, birefringent material layer 200 and be printed with the flexible base board 100 of oriented layer 54 and form similar " sandwich " structure,
And make the thickness of birefringent material layer 200 more uniform, need by rolling process by the coiled material of lens coating 300 be coated with
The coiled material of the flexible base board 100 of birefringent material layer 200 carries out volume to volume laminating.As it is shown in figure 9, rolling device 98 can be passed through
Fit together formation above-mentioned " sandwich " structure by lens coating and the flexible base board being coated with birefringent material layer, arrow in Fig. 9
The direction of motion that direction is flexible base board 100 of head b.Such as, rolling device 98 can be cylinder rolling device, is specifically as follows
Including there being the cylinder rolling device of certain interval between two cylinders and two cylinders, during use, by lens coating 300 and be coated with
After flexible base board 100 para-position of birefringent material layer 200 gap through between two cylinders realize lens coating 300 be coated with double
The laminating of the flexible base board 100 of birefringent material layer 200.Rolling device 98 can also for including an articles holding table and a cylinder,
During use, by the lens coating 300 after para-position and be coated with the flexible base board 100 of birefringent material layer 200 and be placed on articles holding table,
To lens coating 300 by the relative motion of cylinder and articles holding table and it is coated with the flexible base board 100 of birefringent material layer 200 and carries out
Roll-in, it is achieved the laminating of lens coating 300 and the flexible base board 100 being coated with birefringent material layer 200.
Step S24, carries out orientation to described birefringent material layer so that the molecule of described birefringent material is according to described pre-
Set direction arranges.
After above-mentioned steps S21 to step S23, the coiled material of the coiled material of lens coating 300 and flexible base board 100 is through pulleying pair
Volume laminating forms above-mentioned " sandwich " structure, at this time, it may be necessary to further to the birefringence material in " sandwich " structure formed
The bed of material 200 carries out orientation, so that the molecule of described birefringent material arranges according to described preset direction.
In above-mentioned steps S21, the groove 72 of the formed preset direction that rubs oriented layer 54 surface is i.e. for luring
Send out the orientation of birefringent material molecule so that birefringent material molecule all arranges according to preset direction, i.e. makes birefringent material
The long axis direction of molecule is all along the bearing of trend of above-mentioned groove 72.But, under room temperature, above-mentioned process of alignment is relatively slower, in order to add
The orientation speed of speed birefringent material layer 200, needs birefringent material layer 200 is heated to preset temperature, makes birefringent material
The major axis of molecule is consistently oriented along the bearing of trend of the groove 72 on oriented layer 54 surface.Wherein, preset temperature exceedes double
The fusing point of refractive material and the clearing point less than birefringent material.
Such as, as shown in figure 11, can be by laminating rear lens film 300, birefringent material layer 200 and flexible base board 100 edge
Direction of arrow process of passing through tunnel stove 110 shown in Figure 11, continuous tunnel furnace 110 is preferably and uses flat heater or Infrared Heating, heating
Temperature range can be 50～100 DEG C.Concrete heating-up temperature needs the characteristic according to birefringent material and flexible base board 100 certainly
Fixed, it is necessary to assure the quick orientation of birefringent material and the dimensional stability of flexible base board 100, i.e. ensure that flexible base board 100 is at this
At a temperature of produce without obvious deformation.
Step S25, solidifies described birefringent material layer so that being attached to through the described birefringent material of orientation
Described lens coating surface forms birefringent lens array.
After completing the orientation of birefringent material layer 200, need further birefringent material layer 200 to be solidified, so that
Obtain birefringent material and can be adhering closely to the surface of lens coating 300 in solid form, form birefringent lens array.Due to this
In embodiment, birefringent material is liquid crystal material, according to the characteristic of liquid crystal material, liquid crystal material can be made solid by ultraviolet lighting
Change.Such as, as shown in figure 11, lens coating 300, birefringent material layer 200 and flexible base board 100 can be made through birefringent material
Continue through ultraviolet continuous tunnel furnace 112 after orientation birefringent material is carried out ultraviolet light irradiation to solidify to form birefringent lens array.
Concrete, the ultraviolet lamp tube of UVA wavelength (320～420nm) can be configured in ultraviolet continuous tunnel furnace 112.
Birefringent lens array i.e. can be formed through above-mentioned steps S21 to step S25.Birefringent lens array now
It is also attached on the oriented layer 54 on flexible base board 100 surface, it is however generally that need described birefringence before formally coming into operation
Lens arra is from the sur-face peeling away from flexible base board 100 of oriented layer 54.As Figure 12 shows birefringent lens array 130
Peel off and the schematic diagram of cutting.As shown in figure 12, stripping wheel 120 can be used by birefringent lens array 130 and from oriented layer
The sur-face peeling away from flexible base board 100 of 54, the flexible base board 100 after separation can reclaim again becomes coiled material.In Figure 12
The transmission direction that arrow c direction is birefringent lens array 130.Made birefringent lens array 130 both can be with volume
The packaged of material, it is also possible to be cut directly into the size of needs, as shown in figure 12, cutting mode cutting die can be used die-cut or
The radium-shine cutting of person.In actual manufacture process, if the flexible base board 100 used is flexible glass, need birefringent lens array
130 cut after oriented layer is peeled off again, if the flexible base board 100 used is the plastic materials such as PET, can first cut again
Peel off, to keep birefringent lens array 130 be not scratched or pollute.Figure 12 shows the birefringence of cutting required size
The cavity 124 stayed after lens arra, other regions not cut to can be carried out by material collecting device 122 in the roll form
Rolling.It is understood that according to actual needs, this birefringent lens array 130 can cut out simultaneously and vary in size
Sheet material.
In sum, the lens arra manufacture method that the embodiment of the present invention provides uses the coiled material conduct of flexible base board 100
Auxiliary material, manufactures birefringent lens array by the technique of volume to volume, overcomes in prior art because using the PI glass of reduced size
Glass cannot produce the difficulty of larger-size birefringent lens array, and the application for the birefringent lens array of large-size provides
May, it being simultaneously also beneficial to the recovery of the flexible base board 100 as auxiliary material, the production reducing birefringent lens array becomes
This.Additionally, in the present embodiment, it is not necessary to lens coating is first cut into PI glass size and matches, be effectively improved birefringence
The production efficiency of lens arra.
Second embodiment of the invention provides a kind of birefringent lens array.This birefringent lens array uses above-mentioned first
The lens arra manufacture method that embodiment provides is made.As shown in figure 13, this birefringent lens array 130 includes lens coating 300
With birefringent material layer 200, described birefringent material layer 200 is attached to the one side of described lens coating 300, described birefringent material
Birefringent material molecule in layer 200 arranges according to preset direction.Wherein, described preset direction is above-mentioned first embodiment institute
The oriented layer 54 stated is away from the direction of the groove 72 on flexible base board 100 surface, and here is omitted.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a lens arra manufacture method, it is characterised in that described method includes:
Coiled material surface at flexible base board forms oriented layer, and wherein, described alignment layer surface has the groove on preset direction；
Forming birefringent material layer at described alignment layer surface coating birefringent material, wherein, described birefringent material is for being in
Mesomorphic birefringent material；
By volume to volume technique, the coiled material of lens coating is fitted with described birefringent material layer；
Described birefringent material layer is carried out orientation so that the molecule of described birefringent material arranges according to described preset direction；
Described birefringent material layer is solidified so that being attached to described lens coating table through the described birefringent material of orientation
Face forms birefringent lens array.
Method the most according to claim 1, it is characterised in that described by volume to volume technique by the coiled material of lens coating with
Described birefringent material layer carries out the step fitted, including:
The coiled material of the coiled material of lens coating with the flexible base board being coated with birefringent material layer is carried out para-position；
Use rolling process that the coiled material of the coiled material of lens coating with the flexible base board being coated with birefringent material layer is carried out volume to volume
Laminating.
Method the most according to claim 1, it is characterised in that described is coated with birefringent material in described alignment layer surface
Form the step of birefringent material layer, including:
Birefringent material layer is formed at described alignment layer surface coating birefringent material by slot coated device.
Method the most according to claim 1, it is characterised in that described is coated with birefringent material in described alignment layer surface
Form the step of birefringent material layer, including:
Birefringent material layer is formed at described alignment layer surface coating birefringent material by Multi needle apparatus for coating.
Method the most according to claim 1, it is characterised in that described described birefringent material layer is solidified so that
After the described birefringent material of orientation is attached to the step that described lens coating surface forms birefringent lens array, also wrap
Include:
By described birefringent lens array from described oriented layer away from the sur-face peeling of described flexible base board.
Method the most according to claim 1, it is characterised in that the described coiled material surface at flexible base board forms orientation
Layer, wherein, described alignment layer surface has the step of the groove on preset direction, including:
Coiled material surface at described flexible base board prints oriented layer；
Described oriented layer is carried out friction away from the surface of flexible base board and forms the groove on preset direction.
Method the most according to claim 6, it is characterised in that the described coiled material surface at described flexible base board is printed fixed
To the step of layer, including:
The coiled material of described flexible base board is launched in the first direction；
The printing head controlling inkjet-printing device moves and in a second direction to the surface spraying oriented layer of described flexible base board
Material, wherein, the thickness of described alignment layer material spraying is by the development rate of the coiled material of described flexible base board, described printing head
Movement velocity and the viscosity of described alignment layer material determine；
The alignment layer material being sprayed on described flexible base board surface is carried out heat cure and forms oriented layer.
Method the most according to claim 7, it is characterised in that the described printing head controlling inkjet-printing device is along the
Two directions motions to the step of the surface spraying alignment layer material of described flexible base board, including:
The printing head controlling inkjet-printing device moves and in a second direction to the surface spraying oriented layer of described flexible base board
During material, the alignment layer material being sprayed on described flexible base board surface is carried out precuring.
Method the most according to claim 6, it is characterised in that described to described oriented layer away from the surface of flexible base board
After carrying out the step that friction forms groove on preset direction, also include:
Use ultrasound wave dry-cleaning machine that the oriented layer after friction is carried out.
10. a birefringent lens array, it is characterised in that use the method manufacture according to any one of claim 1-9, institute
Stating birefringent lens array to include: lens coating and birefringent material layer, described birefringent material layer is attached to described lens coating
Simultaneously, the birefringent material molecule in described birefringent material layer arranges according to preset direction.
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| CN201610969393.6A CN106291785A (en) | 2016-10-27 | 2016-10-27 | Lens arra manufacture method and birefringent lens array |
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