CN106199780A - Optical element and Optical devices - Google Patents
Optical element and Optical devices Download PDFInfo
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- CN106199780A CN106199780A CN201610779115.4A CN201610779115A CN106199780A CN 106199780 A CN106199780 A CN 106199780A CN 201610779115 A CN201610779115 A CN 201610779115A CN 106199780 A CN106199780 A CN 106199780A
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- layer
- birefringent material
- optical element
- lens array
- optical
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/005—Arrays characterized by the distribution or form of lenses arranged along a single direction only, e.g. lenticular sheets
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0002—Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping
Abstract
This application provides a kind of optical element and Optical devices.This optical element includes optical structure layers and birefringent material layer, wherein, the contact of birefringent material layer is arranged on a surface of optical structure layers, birefringent material layer includes birefringent material, the surface contacted with birefringent material layer of optical structure layers has multiple groove, and multiple grooves are for carrying out orientation to the orientation of the molecule of birefringent material.In this optical element, arranging multiple groove in the optical structure layers contact surface with birefringent films, these grooves, as alignment structure, can carry out orientation to the orientation of the birefringent material molecule in birefringent material layer well.In actual fabrication process, can disposably form the micro structure with multiple groove, making the preparation technology of alignment structure of liquid crystal on the column lens array element of the application relatively simple, the Preparation equipment of needs is less, thus reduces the cost manufacturing alignment structure.
Description
Technical field
The application relates to Display Technique field, in particular to a kind of optical element and Optical devices.
Background technology
At present, in 2D/3D automatic switchover 3 d display device, column lens array element mainly includes birefringence material
The bed of material and column lens array layer, birefringent material layer structurally matches with column lens array layer.Lens pillar battle array
Row element can carry out pattern switching, and its principle is the refractive index being controlled birefringent material by electrooptical switching.
The most frequently used birefringent material is liquid crystal material, and under electric switch control, the orientation of liquid crystal molecule occurs
Change so that the refractive index of liquid crystal material changes, the variations in refractive index of liquid crystal material achieves lens unit refraction effect
The recovery answered and elimination, and then the show image combining 3D Yu 2D realizes 3D and shows and show with 2D.
Under 2D display pattern, between the liquid crystal material that the lens pillar in column lens array is adjacent with in its light path not
There is refractivity, light is in " passing through " pattern, and whole column lens array is the most right with the plain film being similar to transparent material
Light does not guides, and then realizes 2D and show.
Under 3D display pattern, deposit between the liquid crystal material that the lens pillar in column lens array is adjacent with in its light path
At refractivity, light is in " guiding " pattern, and then realizes 3D and show.
Control in order to liquid crystal material to be carried out electric light effectively, need the orientation to liquid crystal molecule to carry out orientation, make
Liquid crystal molecule in the case of not applying any electric field, long axis direction is identical with the orientation of lens pillar.
In prior art, need at the surface that column lens array layer directly contacts with birefringent material layer, conductive layer
Being respectively provided with both alignment layers on the surface directly contacted with birefringent material layer, typically this both alignment layers is made up of polyimides.
As a example by the surface that column lens array layer directly contacts with birefringent material layer, both alignment layers is set, existing
Technique in need, by processing procedures such as rotary coating, dip coated, letterpress or spray printings, alignment liquid to be applied to each column
The surface of lens；Secondly, by baking the affected part after applying some drugs baking journey, form alignment film；Then, formed liquid by friction processing procedure (Rubbing)
Brilliant molecule plays the both alignment layers of effective orientation；Finally, the chip produced alignment film after rubbed is cleaned.
Liquid crystal material is played the method tool of the both alignment layers of alignment effect and has disadvantages that by above-mentioned manufacture:
(1) after the preparation of both alignment layers needs expensive polyimide coating equipment, roasting plant, friction device and friction
Cleaning equipment.
(2) due to capillary effect, the polyimide coating solution on lens pillar surface is often gathered in lens recess
Place, adds display device crosstalk in 3 d mode.
(3) coating and the friction of polyimides is the most rambunctious, such as: due to lens pillar layer surface undulation not
Flat, easily form polyimide layer in uneven thickness；When polyimide solution covers lens pillar layer surface, polyamides is sub-
The organic solution of amine (such as GBL, BC, etc.) easily by macromolecule post mirror absorbed, consequently, it is possible to cause the expansion of lens pillar；
Due to the temperature of baking procedure higher (typically more than 150 degree), lens pillar may shrink, consequently, it is possible to cause post mirror film from
Peel off on following conductive layer, it is also possible to cause the cracking of post mirror macromolecular material to cause post mirror contraction distortion；Covering in column
When the relatively thin polyimide layer of lens surface rubs, it is easy to polyimide film is damaged, and then cause local liquid
The orientation of brilliant molecule is the best；The polyimides fragment produced in friction process take a walk air is likely to result in plant and equipment and
The pollution of display device.
Summary of the invention
The main purpose of the application is to provide a kind of optical element and Optical devices, to solve orientation of the prior art
The problem that layer manufacturing process is complicated.
To achieve these goals, according to an aspect of the application, it is provided that a kind of optical element, this optical element bag
Including optical structure layers and birefringent material layer, wherein, the contact of birefringent material layer is arranged on the one of above-mentioned optical structure layers
On individual surface, above-mentioned birefringent material layer includes birefringent material, above-mentioned optical structure layers with above-mentioned birefringence material
The surface of bed of material contact has multiple groove, and multiple above-mentioned grooves are for carrying out the orientation of the molecule of above-mentioned birefringent material
Orientation.
Further, above-mentioned optical element is column lens array element, and above-mentioned optical structure layers is column lens array
Layer, above-mentioned column lens array layer has lens surface, and said lens surface contacts with above-mentioned birefringent material layer, above-mentioned
Mirror surface is made up of multiple micro structures being arranged in order, and each above-mentioned micro structure has multiple spaced above-mentioned groove.
Further, the above-mentioned groove circumference along the axially extending of above-mentioned micro structure and along above-mentioned micro structure is arranged in order.
Further, the surface of each above-mentioned groove is formed by connecting by plane and/or curved surface.
Further, a diameter of R of the molecule of above-mentioned birefringent material, above-mentioned groove vertical is in the axle of above-mentioned micro structure
To direction be width, the Breadth Maximum of each above-mentioned groove is L, R ＜ L ＜ 5 μm.
Further, it is characterised in that R ＜ L ＜ 400nm.
Further, above-mentioned column lens array element also includes: the first conductive layer, is arranged on above-mentioned column lens array
On the surface away from above-mentioned birefringent material layer of layer；Second conductive layer, be arranged on above-mentioned birefringent material layer away from
On the surface of above-mentioned column lens array layer.
Further, above-mentioned first conductive layer and above-mentioned second conductive layer are transparency conducting layer.
Further, above-mentioned column lens array layer is formed by polymer, and the refractive index of above-mentioned column lens array layer is
n。
Further, above-mentioned birefringent material is liquid crystal material, above-mentioned liquid crystal material refractive index etc. in 2 d mode
In above-mentioned n；Above-mentioned liquid crystal material 3D pattern under refractive index be not equal to above-mentioned n.
Further, the lens pillar in above-mentioned column lens array layer is convex lens.
Further, the lens pillar in above-mentioned column lens array layer is concavees lens.
Another aspect according to the application, it is provided that a kind of Optical devices, these Optical devices include optical element, its
In, this optical element is above-mentioned optical element.
In above-mentioned optical element, the optical structure layers contact surface with birefringent films arranges multiple groove, this
The orientation of the birefringent material molecule in birefringent material layer, as alignment structure, can be joined by a little grooves well
To.Have only to manufacture post optical structure layers processing step in prepare multiple groove structure as alignment structure, it is possible to
Well the orientation of birefringent material molecule is carried out orientation.In actual fabrication process, ultraviolet light can be used to transfer skill
Art concurrently forms post mirror microstructure and alignment structure, and then avoids and use complicated preparation technology to form orientation knot in prior art
Structure so that the preparation technology of the alignment structure of liquid crystal on the column lens array element of the application is relatively simple, and the preparation of needs sets
Standby less, thus reduce the cost manufacturing alignment structure.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing further understanding of the present application, and the application shows
Meaning property embodiment and explanation thereof are used for explaining the application, are not intended that the improper restriction to the application.In the accompanying drawings:
Fig. 1 shows the structural representation of the whole array element of lens pillar of a kind of embodiment offer of the application；
Fig. 2 shows the structural representation of the whole array element of local lens pillar in Fig. 1；
Fig. 3 shows the structural representation of the whole array element of local lens pillar in Fig. 1；
Fig. 4 shows the structural representation of a kind of groove in an embodiment；
Fig. 5 shows the structural representation of the whole array element of local lens pillar in another embodiment；
Fig. 6 shows the structural representation of the whole array element of local lens pillar in another embodiment；
Fig. 7 shows the structural representation under the 2D display pattern of the whole array element of lens pillar of embodiment 1；
Fig. 8 shows the structural representation under the 3D display pattern of the whole array element of lens pillar of embodiment 1；
Fig. 9 shows the structural representation under the 3D display pattern of the whole array element of lens pillar of embodiment 2；
Figure 10 shows the structural representation under the 2D display pattern of the whole array element of lens pillar of embodiment 2；And
Figure 11 shows the partial structurtes schematic diagram of the whole array element of lens pillar of a kind of embodiment.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
01, light source；1, the first conductive layer；2, optical structure layers；3, birefringent material layer；4, the second conductive layer；20, micro-
Structure；21, groove.
Detailed description of the invention
It it is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless it is another
Indicating, all technology used herein and scientific terminology have usual with the application person of an ordinary skill in the technical field
The identical meanings understood.
It should be noted that term used herein above merely to describe detailed description of the invention, and be not intended to restricted root
Illustrative embodiments according to the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when using term " to comprise " in this manual and/or " bag
Include " time, it indicates existing characteristics, step, operation, device, assembly and/or combinations thereof.
As background technology is introduced, matching layer complicated process of preparation of the prior art, preparation cost is higher, in order to
Solve technical problem as above, present applicant proposes a kind of optical element and Optical devices.
A kind of typical embodiment of the application proposes a kind of optical texture, as it is shown in figure 1, this optical texture includes light
Learning structure sheaf 2 and birefringent material layer 3, birefringent material layer 3 contact is arranged on a surface of above-mentioned optical structure layers 2
On, described birefringent material layer 3 includes birefringent material, above-mentioned optical structure layers 2 with above-mentioned birefringent material layer 3
The surface of contact has multiple groove 21, and multiple above-mentioned grooves 21 are for the birefringence forming above-mentioned birefringent material layer
The orientation of the molecule of material carries out orientation.
Optical element in the application can be that laser beam controls element, variable focus lens package, changeable conquers lens cells
Part and flexible display element, but be not restricted to that above-mentioned optical element, and the optical element in the application can be any needs
Orientation to the molecule of birefringent material carries out the optical element of orientation.
In above-mentioned optical element, the optical structure layers contact surface with birefringent films arranges multiple groove, this
The orientation of the birefringent material molecule in birefringent material layer, as alignment structure, can be joined by a little grooves well
To.In actual fabrication process, ultraviolet light transfer technique can be used disposably to form post mirror microstructure and alignment structure, it is possible to
There is to use etching technics disposably to be formed the micro structure of multiple groove, and then avoid employing complexity preparation in prior art
Technique forms alignment structure so that the preparation technology of the alignment structure of liquid crystal on the column lens array element of the application is simpler
Single, the Preparation equipment of needs is less, thus reduces the cost manufacturing alignment structure.
In the application one embodiment, above-mentioned optical element is column lens array element, as in figure 2 it is shown, above-mentioned optics
Structure sheaf 2 is column lens array layer, and above-mentioned column lens array layer has lens surface, and said lens surface is two-fold with above-mentioned
Penetrating rate material layer 3 to contact, said lens surface is made up of multiple micro structures 20 being arranged in order, and each above-mentioned micro structure 20 has many
Individual spaced groove 21.Wherein, the micro structure of column lens array element is also column, and therefore it has axial and all
To.
In a kind of preferred embodiment, the surface away from above-mentioned column lens array layer of above-mentioned birefringent material layer 3
Smooth.
The above-mentioned micro structure with multiple groove can use ultraviolet light transfer technique or etching technics disposably to be formed,
Can also be formed step by step, be initially formed multiple micro structure, in each micro structure, then form multiple groove.Stepped process is compared once
Property technique cumbersome, therefore, in actual mechanical process, preferably disposable technique.
Above-mentioned column lens array element has only to add groove 21 in the processing step manufacturing post mirror microstructure 20 and makees
For alignment structure, it is possible to well the orientation of birefringent material molecule is carried out orientation.In preparation process, can use
Ultraviolet light transfer technique or etching technics disposably form multiple micro structures with multiple groove, and then avoid prior art
The complicated preparation technology of middle employing forms both alignment layers, and the preparation technology of the alignment structure on the column lens array element of the application is relatively
Simply, the Preparation equipment of needs is less, thus reduces the cost manufacturing both alignment layers.Further, this alignment structure will not be
The intersection of adjacent microstructures is piled up, and does not results in the crosstalk phenomenon in 3D pattern；It addition, the preparation of this alignment structure need not
Rub, Factory Building and Optical devices will not be polluted so that the reliability of product is higher.
In the application between shape and the adjacent trenches of the adoptable groove that birefringent material is risen alignment effect
Spacing range is relatively wide and orientation effect can be in statistical significance.Therefore, the shape of the multiple grooves in the application is permissible
Identical, it is also possible to differ, such as, the cross sectional shape of groove 21 can be a part (as shown in Figure 2) for square wave, it is also possible to be
The shape of other shape, such as cross section is a part (as shown in Figure 5 or Figure 6) for sine and cosine ripple.Between adjacent groove
Spacing can be identical, it is also possible to differs, and the quantity of the groove in the most each micro structure can be identical, it is also possible to is different
's.Those skilled in the art can select the groove of well-formedness shape, the groove of suitable interval as the case may be.
Multiple grooves in each micro structure can be arranged in order along the circumference of micro structure, it is also possible to not along the week of micro structure
To arrangement, groove can be arranged according to a certain direction by those skilled in the art according to practical situation.
(the such as orientation of the groove 21 shown in Figure 11, this figure when multiple grooves are not along the circumferential array of micro structure
Showing the part-structure in column lens array element, this part-structure includes a micro structure with multiple grooves 21
20, multiple grooves 21 axially arranging along this micro structure 20, the i.e. orientation of groove 21 are circumferential vertical with micro structure 20)
Time, being retrained by groove orientation, birefringent material molecule can be orientated along groove, but is retrained by post mirror curved surface, two-fold
Penetrate rate material molecule optical axis will opposite polarization incident illumination polarization direction formed certain angle, and then make 2D or 3D show mould
The Quality Down of formula.
In order to avoid the refractive index of birefringent material molecule changes, Jin Erying along the bearing of trend of the cambered surface of lens
Ringing the display quality of 2D or 3D display pattern, as shown in Figure 1 to Figure 3, the preferred multiple above-mentioned grooves of the application are along above-mentioned post mirror
The circumference of micro structure is arranged in order, and axially extending along micro structure of preferred each groove, the micro structure of its length and lens pillar
Length equal, as shown in Figure 3.
When micro structure 20 is formed by cambered surface, as it is shown in figure 1, the orientation of the groove 21 in each micro structure 20 and arc
The bearing of trend (circumference of micro structure the most mentioned above) in face is identical；When micro structure 20 by multiple planes and/or cambered surface successively
When connecting formation, the orientation of the groove 21 on each surface of each micro structure 20 and the bearing of trend on the surface at its place
Identical.
(long bearing of trend is exactly axle to the wide bearing of trend of the micro structure of " bearing of trend " expression arc surfaced herein
To), say, that the bearing of trend of the camber line (not being strict camber line, have groove above) of micro structure 20 correspondence in Fig. 1, above
" vertical with the bearing of trend of lens pillar " mentioned refers to the bearing of trend (corresponding micro structure axial) of the length of micro structure, figure
Not shown in 1, column lens array element is in the structure of length direction.
The surface of the groove in the application is made up of plane, and as shown in Figure 1 to Figure 3, the surface of this groove 21 is put down by three
Face is constituted, and similarly, this groove 21 can also be formed by plane and curved surface, and as shown in Figure 4, the surface of this groove 21 is by two arcs
Face is formed with a plane.It addition, the surface of this groove 21 can also be formed by curved surface, as shown in figs. 5 and 6, this groove 21
Surface formed by a curved surface, the cross section of this curved surface is similar to a part for sine and cosine curve.
The shape of the groove in the application is not limited to mentioned above several, and the groove of any shape is all capable of orientation
Effect, those skilled in the art can select suitable groove shape according to practical situation.
The width of the above-mentioned groove 21 being arranged in order along the circumference of micro structure is perpendicular to the axial of above-mentioned micro structure 20,
The size of the Breadth Maximum L (shown in Fig. 2 Yu Fig. 4) of groove affects the orientation effect to birefringent material and Optical devices
The optical effect of (such as display device).When the Breadth Maximum of groove is bigger, do not reach the effect of the orientation to birefringent material
Really, also can produce some negative optical effects, such as scattering or diffraction simultaneously and cause the fuzzy or crosstalk of 3D display pattern.When
When groove width is less than the diameter R of birefringent material molecule, groove does not reaches the orientation effect to birefringent material molecule.
It is pointed out that the groove for different orientations, its width is different, when multiple groove edges
During the circumferential array of micro structure, the width of groove refers to the axially in parallel direction with micro structure, and, now, ditch
The length direction of groove is parallel with the circumference of micro structure.
In order to optimize the orientation effect to birefringent material and avoid adverse optical effect mentioned above, protect further
Card column lens array element can preferably carry out 2D Yu 3D and show, the application preferred R ＜ L ＜ 5 μm, wherein, R represents two-fold
Penetrate the diameter of the molecule (i.e. birefringent material molecule) of rate material.
In a kind of embodiment in the application, R ＜ L ＜ 400nm, use in the trichromatic display device of RGB, by above-mentioned ditch
When the width L of groove is set in the diameter being more than birefringent material molecule less than blue light wavelength (about 400nm), showing of display device
Show better quality.
In order to more easily birefringent material be applied electric field, as it is shown in fig. 7, in a kind of embodiment of the application,
Also including the first conductive layer 1 and the second conductive layer 4 in above-mentioned column lens array element, wherein, the first conductive layer 1 is arranged on
Stating on the surface away from above-mentioned birefringent material layer 3 of column lens array layer, the second conductive layer 4 is arranged on above-mentioned birefringence
On the surface away from above-mentioned column lens array layer of rate material layer 3.
In another embodiment of the application, above-mentioned first conductive layer 1 is ITO conductive layer with above-mentioned second conductive layer 4.
In the another embodiment of the application, above-mentioned column lens array layer is formed by polymer, above-mentioned lens pillar battle array
The refractive index of row layer is n.
Concrete above-mentioned polymer can be UV resin or other and birefringent material layer folding under 2D display pattern
The material that rate of penetrating is identical.
In order to be further ensured that the refractive index of birefringent material can change when different flexibly, protect further
Card display device freely can switch under 2D Yu 3D display pattern, and the preferred above-mentioned birefringent material of the application is liquid crystal material
Material, above-mentioned liquid crystal material refractive index in 2 d mode is equal to above-mentioned n；Above-mentioned liquid crystal material 3D pattern under refractive index not
Equal to above-mentioned n.
In a kind of embodiment, as it is shown in fig. 7, the lens pillar in above-mentioned column lens array layer is convex lens, at this moment, post
Shape lens array layer has convex lens surface, and birefringent material contact is arranged on convex lens surface, forms birefringence material
The bed of material 3, it is concave lens surface that this layer contacts the surface arranged with convex lens.
In another kind of embodiment, as shown in Figure 8, the lens pillar in above-mentioned column lens array layer is concavees lens, at this moment,
Column lens array layer has concave lens surface, and birefringent material contact is arranged on concave lens surface, forms birefringence
Material layer 3, it is convex lens surface that this layer contacts the surface arranged with concavees lens.
Owing to being provided with groove in the micro structure of the lens surface of column lens array layer, therefore, the application mentions
" convex lens ", " concavees lens ", " lens surface ", " convex lens surface " and " concave lens surface ", be all non-proper
Lens surface, on these surfaces and lens or have groove, or has the structure matched with groove.
The preparation method of the column lens array layer in column lens array element in the application mainly has: ultraviolet light is hard
Change transfer processing method and laser-etching process.
Ultraviolet light photopolymerization transfer processing method includes: step S1, manufactures and has what fluted lens surface structure matched
Lens processing roller die, is coated with liquid polymer on base material；Step S2, by lens processing roller die imprint after through
Ultraviolet radiation-curable, obtains having fluted column lens array layer.
The method arranging groove in the micro structure of column lens array layer is not limited to mentioned above two kind method, this
Skilled person can select any method that can realize according to practical situation.
The another kind of typical embodiment of the application provides a kind of Optical devices, and these Optical devices include optics unit
Part, and this optical element is above-mentioned optical element.
In these Optical devices, it is only necessary to form multiple groove in the processing step manufacturing optical structure layers and tie as orientation
Structure, it is possible to well the orientation of liquid crystal molecule is carried out orientation.In actual preparation process, ultraviolet light can be used to transfer
Technology concurrently forms post mirror microstructure and alignment structure, it would however also be possible to employ etching technics forms the micro structure with multiple groove,
And then avoid and prior art uses complicated preparation technology form alignment structure so that the preparation work of the Optical devices of the application
Skill is relatively simple, and preparation cost is relatively low, it is possible to be widely used in every field.
In a kind of embodiment of the application, above-mentioned Optical devices are the display device that 2D/3D automatically switches.This display device
Including column lens array element, this column lens array element includes column lens array layer and birefringent material layer, on
Stating column lens array layer and have flat surface and lens surface, said lens surface contacts with above-mentioned birefringent material layer 3,
Said lens surface is made up of multiple micro structures 20 being arranged in order, and each above-mentioned micro structure 20 has multiple spaced groove
The surfacing away from above-mentioned column lens array layer of 21 above-mentioned birefringent material layers 3.
The lens surface of the micro structure 20 of the column lens array element in the display device that this 2D/3D automatically switches has
Multiple grooves 21, multiple grooves 21 carry out orientation as alignment structure to stating birefringent material layer 3, and then realize display device
2D/3D automatically switch.
So that those skilled in the art can be well understood to the technical scheme of the application, below with reference to concrete
The technical scheme of the application is described in detail by embodiment.
Embodiment 1
The structure of column lens array element is as it is shown in fig. 7, this column lens array element includes the most successively
One conductive layer 1, column lens array layer (optical structure layers 2), birefringent material layer 3 and the second conductive layer 4, wherein, column
Lens pillar in lens array layer is convex lens, and this layer has convex lens surface and flat surface, and convex lens surface includes many
The individual micro structure 20 being arranged in order, each micro structure has multiple spaced strip groove 21, the table of this groove 21
Face is formed by three planes, and, as it is shown in figure 5, its cross section is that (in figure, the cross section profile of convex lens surface becomes class to rectangle
Like square-wave form).Birefringent material layer 3 is arranged on convex lens surface, and the surface contacting setting with convex lens surface is
Concave lens surface.
First conductive layer 1 and the second conductive layer 4 are ITO layer, column lens array layer by UV resin formation, its refractive index
N=ne.Birefringent material layer 3 is formed by liquid crystal material, when liquid crystal material does not applies electric field (V=0), in micro structure 20
Multiple grooves 21 orientation of liquid crystal molecule is carried out orientation so that the long axis direction of each liquid crystal molecule is parallel to groove
The width of 21, is perpendicular to the direction of propagation of light, and its refractive index is ne, after liquid crystal material is applied suitable electric field
(Vo), the orientation of liquid crystal molecule changes, and its long axis direction is consistent with direction of an electric field, also with the light direction of propagation one
Causing, at this moment the refractive index of liquid crystal material is equal to no.
Light source 01 is arranged on the side away from above-mentioned column lens array layer of the first conductive layer 1, this column lens array
The specific works process of element is:
2D shows pattern: as it is shown in fig. 7, do not apply voltage between the first conductive layer 1 and the second conductive layer 4, the most right
Liquid crystal material applies during electric field (V=0), and the multiple grooves 21 in micro structure 20 carry out orientation to the orientation of liquid crystal molecule,
The long axis direction making each liquid crystal molecule is parallel to the width of groove, and is perpendicular to the direction of propagation of light, its refraction
Rate is identical with the refractive index of column lens array layer, is ne, therefore, and the light convex lens table by column lens array element
During face (i.e. column lens array layer and the interface of birefringent material layer 3), will not reflect, whole column lens array unit
Part is similar to one piece of transparent plate.
3D shows pattern: as it is shown in figure 9, apply Vo between the first conductive layer 1 and the second conductive layer 4, liquid crystal molecule
Orientation changes, and long axis direction is consistent with direction of an electric field, and the long axis direction of liquid crystal molecule is consistent with the light direction of propagation,
The refractive index of liquid crystal material is no, and light is by (column lens array layer and birefringent material layer 3 during convex lens surface
Interface), owing to column lens array layer is different from the refractive index of birefringent material layer 3, reflect, whole lens pillar battle array
Light is played guide effect by row element.
Embodiment 2
As shown in Figure 8, this column lens array element includes to the structure of column lens array element the most successively
Two conductive layers 4, birefringent material layer 3, column lens array layer (optical structure layers 2) and the first conductive layer 1, wherein, column
Lens pillar in lens array layer is concavees lens, and this layer has concave lens surface and flat surface, and concave lens surface includes many
The individual micro structure 20 being arranged in order, each micro structure 20 has multiple spaced strip groove 21, this groove 21
Surface is formed by three planes, and, as it is shown in figure 5, its cross section is that (in figure, the cross section profile of concave lens surface becomes rectangle
Similar square-wave form).Birefringent material layer 3 is arranged on concave lens surface, and contacts the surface arranged with concave lens surface
For convex lens surface.
First conductive layer 1 and the second conductive layer 4 are ITO layer, column lens array layer by UV resin formation, its refractive index
N=no.Birefringent material layer 3 is formed by liquid crystal material, when liquid crystal material does not applies electric field (V=0), in micro structure 20
Multiple grooves 21 orientation of liquid crystal molecule is carried out orientation so that the long axis direction of each liquid crystal molecule is parallel to groove
The width of 21, is perpendicular to the direction of propagation of light, and its refractive index is ne, after liquid crystal material is applied suitable electric field
(Vo), the orientation of liquid crystal molecule changes, and its long axis direction is consistent with direction of an electric field, so the major axis side of liquid crystal molecule
To consistent with the light direction of propagation, the refractive index of liquid crystal material is equal to no.
Light source 01 is arranged on the side away from above-mentioned birefringent material layer 3 of the second conductive layer 4, this column lens array
The specific works process of element is:
2D shows pattern: as shown in Figure 10, applies Vo between the first conductive layer 1 and the second conductive layer 4, liquid crystal molecule
Orientation changes, and long axis direction is consistent with direction of an electric field, and the long axis direction of liquid crystal molecule is consistent with the light direction of propagation,
The refractive index of liquid crystal material is no, light by the concave lens surface of column lens array layer time (column lens array layer with
The interface of birefringent material layer 3), owing to column lens array layer is identical with the refractive index of birefringent material layer 3, it is
No, therefore light by the convex lens surface of column lens array element time will not reflect, whole column lens array unit
Part is similar to one piece of transparent plate.
3D shows pattern: as shown in Figure 8, does not apply voltage between the first conductive layer 1 and the second conductive layer 4, the most right
Liquid crystal material applies during electric field (V=0), and the multiple grooves 21 in micro structure 20 carry out orientation to the orientation of liquid crystal molecule,
The long axis direction making each liquid crystal molecule is perpendicular to the width of groove, and is perpendicular to the direction of propagation of light, its refraction
Rate ne differs with refractive index no of column lens array layer, therefore, and the light concavees lens table by column lens array element
During face (i.e. column lens array layer and the interface of birefringent material layer 3), reflect, whole column lens array element pair
Light plays guide effect.
As can be seen from the above description, the application the above embodiments achieve following technique effect:
1), in the optical element, in the application, optical structure layers with the contact surface of birefringent films are arranged multiple
Groove, these grooves, can taking the birefringent material molecule in birefringent material layer well as alignment structure
To carrying out orientation.And the preparation technology of the alignment structure in the application is relatively simple, the Preparation equipment of needs is less, reduces manufacture
The cost of alignment structure.
2), in the application in Optical devices, in the processing step manufacturing post mirror microstructure, multiple groove is prepared as joining
To layer, it is possible to well the orientation of liquid crystal molecule is carried out orientation.The preparation technology of Optical devices is relatively simple, and preparation cost is relatively
Low, it is possible to be widely used in every field.
The foregoing is only the preferred embodiment of the application, be not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.All within spirit herein and principle, that is made any repaiies
Change, equivalent, improvement etc., within should be included in the protection domain of the application.
Claims (13)
1. an optical element, it is characterised in that described optical element includes:
Optical structure layers (2)；And
Birefringent material layer (3), contact is arranged on a surface of described optical structure layers (2), described birefringence material
The bed of material (3) includes birefringent material, the surface contacted with described birefringent material layer (3) of described optical structure layers (2)
Having multiple groove (21), multiple described grooves (21) are for carrying out orientation to the orientation of the molecule of described birefringent material.
Optical element the most according to claim 1, it is characterised in that described optical element is column lens array element,
Described optical structure layers (2) is column lens array layer, and described column lens array layer has lens surface, described lens surface
Contacting with described birefringent material layer (3), described lens surface is made up of multiple micro structures (20) being arranged in order, each described
Micro structure (20) has multiple spaced described groove (21).
Optical element the most according to claim 2, it is characterised in that described groove (21) is along the axle of described micro structure (20)
Circumference to extension and along described micro structure (20) is arranged in order.
Optical element the most according to claim 2, it is characterised in that the surface of each described groove (21) by plane and/or
Curved surface is formed by connecting.
Optical element the most according to claim 3, it is characterised in that a diameter of R of the molecule of described birefringent material,
It is width that described groove (21) is perpendicular to the axially direction of described micro structure, and the Breadth Maximum of each described groove (21) is
L, R ＜ L ＜ 5 μm.
Optical element the most according to claim 5, it is characterised in that R ＜ L ＜ 400nm.
Optical element the most according to claim 2, it is characterised in that described column lens array element also includes:
First conductive layer (1), is arranged on the surface away from described birefringent material layer (3) of described column lens array layer
On；And
Second conductive layer (4), is arranged on the surface away from described column lens array layer of described birefringent material layer (3)
On.
Optical element the most according to claim 7, it is characterised in that described first conductive layer (1) and described second conduction
Layer (4) is transparency conducting layer.
Optical element the most according to claim 2, it is characterised in that described column lens array layer is formed by polymer,
The refractive index of described column lens array layer is n.
Optical element the most according to claim 9, it is characterised in that described birefringent material is liquid crystal material, described
Liquid crystal material refractive index in 2 d mode is equal to described n；Described liquid crystal material 3D pattern under refractive index be not equal to institute
State n.
11. optical elements according to claim 7, it is characterised in that the lens pillar in described column lens array layer
For convex lens.
12. optical elements according to claim 7, it is characterised in that the lens pillar in described column lens array layer
For concavees lens.
13. 1 kinds of Optical devices, including optical element, it is characterised in that described optical element is arbitrary in claim 1 to 12
Optical element described in Xiang.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610779115.4A CN106199780A (en) | 2016-08-31 | 2016-08-31 | Optical element and Optical devices |
| CN201710773352.4A CN107797298A (en) | 2016-08-31 | 2017-08-31 | The preparation method of optical element, Optical devices and optical element |
| PCT/CN2017/107972 WO2018041273A1 (en) | 2016-08-31 | 2017-10-27 | Optical component, optical apparatus, and manufacturing method for optical component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610779115.4A CN106199780A (en) | 2016-08-31 | 2016-08-31 | Optical element and Optical devices |
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| CN201710773352.4A Withdrawn CN107797298A (en) | 2016-08-31 | 2017-08-31 | The preparation method of optical element, Optical devices and optical element |
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| Application Number | Title | Priority Date | Filing Date |
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| WO2018041273A1 (en) * | 2016-08-31 | 2018-03-08 | 张家港康得新光电材料有限公司 | Optical component, optical apparatus, and manufacturing method for optical component |
| WO2018039989A1 (en) * | 2016-08-31 | 2018-03-08 | 张家港康得新光电材料有限公司 | Optical component and optical device |
| WO2019132658A1 (en) * | 2017-12-29 | 2019-07-04 | Zhangjiagang Kangde Xin Optronics Material Co. Ltd | Process for producing a lenticular device |
| CN110114716A (en) * | 2019-03-29 | 2019-08-09 | 京东方科技集团股份有限公司 | Display device and method for controlling display device |
| CN111474612A (en) * | 2020-04-23 | 2020-07-31 | 香港理工大学 | Cylindrical lens, lens generation method, cylindrical lens array and display device |
| WO2022262318A1 (en) * | 2021-06-17 | 2022-12-22 | 纵深视觉科技(南京)有限责任公司 | Switchable optical function assembly, and manufacturing method and manufacturing device therefor |
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| CN111323852A (en) * | 2018-12-14 | 2020-06-23 | 深圳Tcl新技术有限公司 | Composite optical film and backlight module |
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| CN107797298A (en) | 2018-03-13 |
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