The content of the invention
It is a primary object of the present invention to provide a kind of microlens array and display device, to solve to show in the prior artDevice can not be embodied as the problem of change in depth.
To achieve these goals, according to an aspect of the invention, there is provided a kind of microlens array, including：MicrocavityArray of structures unit, including a multiple micro-cavity structures in the first plane distribution of n, the opposite both sides of each micro-cavity structure are provided withPrescribed electrode, wherein n are the positive integer more than 1；Transparent electrophoresis material, is arranged in the cavity of micro-cavity structure, transparent electrophoresis materialIncluding transparent medium and transparent charged particle, transparent charged particle is dispersed in transparent medium and transparent medium and transparent powered micro-The refractive index of grain is different.
Further, above-mentioned transparency electrode forms transparent electrode arrays unit, and transparent electrode arrays unit includes：First is saturatingBright electrically-conductive backing plate array element, including m the first transparent conductive substrates along the distribution of the second planar array, wherein, m is more than 1Positive integer, and m≤n；Second transparent conductive substrate array element, including it is transparent along the m a second of the 3rd planar array distributionElectrically-conductive backing plate, the first plane, the second plane and the 3rd plane are parallel to each other, and each first transparent conductive substrate and each second transparentElectrically-conductive backing plate is transparency electrode.
Further, above-mentioned micro-cavity structure is spherical microcavity structure, elliposoidal micro-cavity structure or polyhedron shape micro-cavity structure.
Further, above-mentioned transparent medium is transparent dielectric solvent, and preferably clear dielectric solvent is selected from aliphatic hydrocarbon, aromatic hydrocarbonWith any one or more in halogenated hydrocarbons.
Further, above-mentioned transparent charged particle is the transparent charged particle of single refractive index or has different refractivityThe mixture of a variety of transparent charged particles, the refractive index of preferably clear charged particle is between 1.34~2.05, preferably clear bandThe refractive index difference of electric particulate and transparent medium is 0.05~0.75.
Further, above-mentioned transparent charged particle is organic transparent charged particle and/or inorganic transparent charged particle.
Further, above-mentioned organic transparent charged particle is acrylate microparticles or polyurethane particulate, preferably inorganic transparentCharged particle is charged silica.
According to another aspect of the present invention, there is provided a kind of display device, including：Display device, has and is used to show figureThe multiple images member of picture；Any of the above-described kind of microlens array, is arranged on the side of display device, wherein the first plane and displayThe display surface of equipment is arranged in parallel so that the corresponding 2D images of image primitive are shown after microlens array with 3D rendering；It is and micro-Lens array driving equipment, is electrically connected with display device and microlens array, for the change according to image primitive corresponding image informationChange the movement of transparent charged particle in the micro-cavity structure of driving microlens array.
Further, above-mentioned microlens array driving equipment includes：Image information capture module, for catching real-time figureAs information；Message processing module, is connected with image information capture module, for being changed image information according to picture depth differenceFor electric signal；Information comparison module, is connected with message processing module, be stored with the standard electric signal of corresponding different images depth withAnd electrical instruction corresponding with standard electric signal, for receiving electric signal and by electric signal compared with standard electric signal；LetterNumber output module, is connected with information comparison module, electrical instruction is sent according to the comparative result of information comparison module；Voltage drivesModule (305), each first transparent conductive substrate and each second electrically conducting transparent base with signal output module and microlens arrayPlate is connected, for receiving electrical instruction and electrical instruction being transmitted to each first transparent conductive substrate and each second electrically conducting transparent basePlate, with the active force of each first transparent conductive substrate of the corresponding different images information of adjustment and corresponding transparent electrophoresis material and/Or each second transparent conductive substrate and corresponding the transparent active force for stating electrophoresis material.
Further, above-mentioned display device is in LCD, LED, OLED, Micro LED, Micro OLED, projection moduleAny one.
Apply the technical scheme of the present invention, transparency electrode is set in each micro-cavity structure opposite both sides, by adjusting sideTransparency electrode and transparent charged particle powered polarity the identical revertive control difference micro-cavity structure with phase in transparent charged particlePosition, and then be applied in 3D display device as microlens array in use, since transparent charged particle is in differenceVoltage control under the lens shape that is formed in micro-cavity structure, refractive index, position it is different, and cause different lenticulesDistance H from 2D image primitives on the display device of 3D display device also can be different, according to Gauss imaging can derive depth intoImage plane distance L isOn the premise of polarity of electrode and its size determine, focal length f (focal length f be byWhat microlens shape and refractive index determined) and distance H to determine value, Depth Imaging plan range L is true as shown from the above formulaDefinite value, and then L values are different under different polarity of electrode and size, therefore utilize shown by after the microlens array processing of the application3D rendering embody except imaging depth change so that shown 3D rendering is more vivid, true to nature.
Brief description of the drawings
The accompanying drawings which form a part of this application are used for providing a further understanding of the present invention, and of the invention showsMeaning property embodiment and its explanation are used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows a kind of part-structure schematic diagram of the microlens array that preferred embodiment provides according to the present invention；
Fig. 2 shows the part-structure signal for the microlens array that another preferred embodiment provides according to the present inventionFigure；
Fig. 3 shows the part-structure signal for the microlens array that another preferred embodiment provides according to the present inventionFigure；
Fig. 4 shows the part-structure signal for the microlens array that another preferred embodiment provides according to the present inventionFigure；
Fig. 5 shows a kind of structure diagram of exemplary embodiment offer display device according to the present invention；
Fig. 6 shows a kind of structure diagram of preferred embodiment offer display device according to the present invention；
Fig. 7 shows the 2D images shown by display device in a kind of preferred embodiment of the present invention；
Fig. 8 shows the driving condition schematic diagram of the 2D images shown in a kind of microlens array corresponding diagram 7 of the present invention, whereinPattern in I corresponding diagrams 7 is alphabetical " A ", and the pattern in II corresponding diagrams 7 is alphabetical " B "；
Fig. 9 shows the light path schematic diagram of the microlens array of I in Fig. 8, wherein eliminating transparency electrode；
Figure 10 shows the light path schematic diagram of the microlens array of II in Fig. 8, wherein eliminating transparency electrode；
Figure 11 shows the 3D rendering schematic diagram shown after the display device of the application of the 2D images shown in Fig. 7.
Wherein, above-mentioned attached drawing is marked including the following drawings：
11st, micro-cavity structure；21st, transparent charged particle；22nd, transparent medium；31st, the first transparent conductive substrate；32nd, second is saturatingBright electrically-conductive backing plate；
1st, display device；2nd, microlens array；3rd, microlens array driving equipment；301st, image information capture module；302nd, message processing module；303rd, information comparison module；304th, signal output module；305th, voltage drive module.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phaseMutually combination.Below with reference to the accompanying drawings and the present invention will be described in detail in conjunction with the embodiments.
As the application background technology is analyzed, 3D display device can only be seen near constant depth plane in the prior artTo stereo-picture, the problem of the change of imaging depth can not be embodied, and cause 3D display effect distortion, in order to solve this problem,This application provides a kind of microlens array and display device.
In a kind of typical embodiment of the application, there is provided a kind of microlens array, as shown in Figures 1 to 4, this is micro-Lens array includes micro-cavity structure array element, transparent electrophoresis material and transparency electrode, and micro-cavity structure array element includes n theMultiple micro-cavity structures 11 of one plane distribution, the opposite both sides of each micro-cavity structure 11 are provided with transparency electrode, and wherein n is more than 1Positive integer；Transparent electrophoresis material is arranged in the cavity of micro-cavity structure 11, and transparent electrophoresis material is including transparent medium 22 and thoroughlyBright charged particle 21, transparent charged particle 21 is dispersed in transparent medium 22 and the folding of transparent medium 22 and transparent charged particle 21Penetrate rate difference.
Transparency electrode is set in each micro-cavity structure 11 opposite both sides, by adjusting the transparency electrode of side and transparent poweredThe identical position with transparent charged particle 21 in phase revertive control difference micro-cavity structure 11 of the powered polarity of particulate 21, and then willIt is applied in 3D display device as microlens array 2 in use, since transparent charged particle 21 is in different voltage controlUnder the lens shape that is formed in the micro-cavity structure 11, refractive index, position it is different, and cause different lenticules and 3D displayThe distance H of 2D image primitives also can be different on the display device of device, and Depth Imaging plane separation can be derived according to Gauss imagingIt is from LOn the premise of polarity of electrode and its size determine, (focal length f is by lenticule shape to focal length fWhat shape and refractive index determined) and distance H to determine value, Depth Imaging plan range L is determines value as shown from the above formula, and thenL values are different under different polarity of electrode and size, therefore utilize 3D rendering shown after the microlens array processing of the applicationEmbody except imaging depth changes so that shown 3D rendering is more vivid, true to nature.Above-mentioned transparent medium 22 is full of microcavity knotThe cavity of structure 11.
The selection of the particle size of above-mentioned transparent charged particle 21 may be referred to the particle diameter of liquid crystal material etc. in the prior artSize, the particle diameter of preferably above-mentioned transparent charged particle 21 are transparent to cause while ensureing the refraction of light between 3~500nmCharged particle flexible motion under electric field action.
Above-mentioned transparency electrode can be diversified forms, such as needle electrode, stick electrode or plate electrode, in order to make electrophoresisThe reaction of material is sensitiveer, and preferably above-mentioned transparency electrode is stick electrode, is more highly preferred to above-mentioned transparency electrode and forms transparency electrodeArray element, transparent electrode arrays unit include the first transparent conductive substrate array element and the second transparent conductive substrate array listMember, the first transparent conductive substrate array element include m the first transparent conductive substrates 31 along the distribution of the second planar array, itsIn, m is positive integer more than 1, and m≤n；Second transparent conductive substrate array element includes the m being distributed along the 3rd planar arrayA second transparent conductive substrate 32, the first plane, the second plane and the 3rd plane are parallel to each other, and each first transparent conductive substrate31 and each second transparent conductive substrate 32 be transparency electrode.
Transparency electrode is arranged on plate-like form, improves electrode area, is conducive to the movement of charged particle；And firstThe number that 31 and second transparent conductive substrate 32 of transparent conductive substrate is set is also relatively more flexible, such as the volume when micro-cavity structure 11When smaller, multiple micro-cavity structures can be correspondingly arranged with first transparent conductive substrate 31 and second transparent conductive substrate 3211。
The set-up mode of the micro-cavity structure 11 of the application also has a variety of, and it is saturating to could be provided as column commonly used in the prior artBright mode is arranged to the spherical microcavity structure or elliposoidal micro-cavity structure that surface is arc, as shown in the figures 1 and 2；Certainly also may be usedTo be arranged to polyhedron shape micro-cavity structure, as shown in Figures 3 and 4.When being arranged to elliposoidal micro-cavity structure, preferably by transparency electrodeThe major axis both ends of elliposoidal micro-cavity structure are arranged on, it is specific as shown in Figure 2；When being arranged to polyhedron shape micro-cavity structure, also to the greatest extentTransparency electrode may be arranged on to the both ends of the longest axis of micro-cavity structure 11, it is specific as shown in figure 3, or with micro-cavity structure 11 compared withSet for stable mode, it is specific as shown in Figure 4.
The application of the transparent electrophoresis material of the application refers to the prior art, and preferably above-mentioned transparent medium 22 is transparent dielectricSolvent, any one or more of further preferred transparent dielectric solvent in aliphatic hydrocarbon, aromatic hydrocarbon and halogenated hydrocarbons.To reduceCost.As skilled in the art to understand, since transparent dielectric solvent exists with solvent version, above-mentioned aliphatic hydrocarbon, virtueThe aliphatic hydrocarbon, aromatic hydrocarbon and halogenated hydrocarbons that it is liquid under room temperature that fragrant hydrocarbon and halogenated hydrocarbons, which are all,.
The selection of above-mentioned transparent charged particle 21 also has a variety of, can allow for light by the way that for example preferably clear is powered micro-The refractive index of grain 21 is between 1.34~2.05；And the refractive index difference energy between transparent charged particle 21 and transparent medium 22It is enough to meet preferably produce refractive power effect, for example control the refractive index difference of transparent charged particle 21 and transparent medium 22 to be0.05~0.75.Further preferred above-mentioned transparent charged particle 21 is for the transparent charged particle 21 of single refractive index or with differenceThe mixture of a variety of transparent charged particles 21 of refractive index, is compared with the transparent charged particle 21 of single refractive index, difference refractionThe mixture of the transparent charged particle 21 of rate can realize the consecutive variations of imaging depth by accurately controlling, because different refractionsSensitivity of the transparent charged particle 21 of rate for inductance is different, therefore for different voltage, it is possible to achieve control exceptThere is the change of refractive index outside shape and position.
Further, above-mentioned transparent charged particle 21 is organic transparent charged particle and/or inorganic transparent charged particle.ItsIn preferably organic transparent charged particle be acrylate microparticles or polyurethane particulate, preferably inorganic transparent charged particle is powered twoSilica.It can be used in the mixture formed for the transparent charged particle 21 of above-mentioned different refractivity organic transparent poweredThe mixture being mixed to form of particulate and inorganic transparent charged particle.
In another typical embodiment of the application, there is provided a kind of display device, as shown in figure 5, the display fillsPut has including display device 1, any of the above-described kind of microlens array 2 and microlens array driving equipment 3, display device 1For showing the multiple images member of image；Microlens array 2 is arranged on the side of display device 1, wherein the first plane and displayThe display surface of equipment 1 is arranged in parallel so that the corresponding 2D images of image primitive are shown after microlens array 2 with 3D rendering；It is micro-Lens array driving equipment 3 is electrically connected with display device 1 and microlens array 2, for according to image primitive corresponding image informationThe movement of transparent charged particle 21 in the micro-cavity structure 11 of change driving microlens array 2.
Above-mentioned display device 1 is used to show 2D images, microlens array driving equipment 3 and display device 1 and lenticule battle arrayRow 2 are electrically connected, and one side microlens array driving equipment 3 can receive the image letter corresponding to the image primitive of display device 1Cease, and adjust the movement of transparent charged particle 21 in microlens array 2 in real time according to the image information, so that corresponding differentShape, refractive index and the position for the lenticule that transparent charged particle 21 is formed with transparent medium 22 in the micro-cavity structure 11 of image informationDifference is put, and make it that different lenticules also can be different from the distance H of the display device 1 of 3D display device, is imaged according to GaussIt can derive that Depth Imaging plan range L isOn the premise of polarity of electrode and its size determine,Focal length f (focal length f is determined by microlens shape and refractive index) and distance H be determine value, as shown from the above formula depth intoImage plane distance L is determines value, and then L values are different under different polarity of electrode and size, therefore utilizes the lenticule of the applicationShown 3D rendering is embodied except imaging depth changes after the processing of array 2 so that shown 3D rendering is more vivid, forcesVery.
In a kind of preferred embodiment of the application, preferably as shown in fig. 6, above-mentioned microlens array driving equipment 3 includesImage information capture module 301, message processing module 302, information comparison module 303, signal output module 304 and voltage drivingModule 305, image information capture module 301 are used to catch real-time image information；Message processing module 302 is caught with image informationCatch module 301 to be connected, for image information to be converted to electric signal according to picture depth difference；Information comparison module 303 and letterCease processing module 302 to be connected, be stored with the standard electric signal of corresponding different images depth and corresponding with standard electric signal logicalElectricity instruction, for receiving electric signal and by electric signal compared with standard electric signal；Signal output module 304 is compared with informationModule 303 is connected, and electrical instruction is sent according to the comparative result of information comparison module 303；Voltage drive module 305 and signalEach first transparent conductive substrate 31 of output module 304 and microlens array 2 is connected with each second transparent conductive substrate 32, usesIn reception electrical instruction and electrical instruction is transmitted to each first transparent conductive substrate 31 and each second transparent conductive substrate 32, withEach first transparent conductive substrate 31 of the corresponding different images information of adjustment and the active force of corresponding electrophoresis material and/or each secondThe active force of transparent conductive substrate 32 and corresponding electrophoresis material.
Image information capture module 301 is used for the image information for catching 1 real-time display of display device, message processing module302 are used to according to picture depth difference image information is converted to electric signal, and then information comparison module 303 is by the telecommunications of receptionNumber compared with standard electric signal, signal output module 304 sends energization according to the comparative result of information comparison module 303 and refers toOrder, voltage drive module 305 receive instruct after adjust in real time corresponding first transparent conductive substrate 31 of each micro-cavity structure 11 orThe voltage and polarity of second transparent conductive substrate 32, and then utilize the suction of the first transparent conductive substrate 31 and transparent charged particle 21Draw or repulsive interaction, and the attraction or repulsive interaction of the second transparent conductive substrate 32 and transparent charged particle 21 cause oolemmaThe electric movement of particulate 21 forms the different lenticule of focal length.
Above-mentioned display device 1 can use currently used display device 1, preferably above-mentioned display device 1 be selected from LCD,LED, OLED, Micro LED, Micro OLED, projective module it is in the block any one.Have on above-mentioned all types of display devices 1Micro- image primitive.
In order to make those skilled in the art more fully understand the application, below with reference to embodiment and attached drawing to display deviceIllustrate.
As shown in fig. 7, there are alphabetical " A " and alphabetical " B " two images, wherein word on the 2D images shown on display device 1The image primitive array in female " A " corresponding 1 upper left corner of display device；The image primitive battle array of alphabetical " B " corresponding 1 middle position of display deviceRow, the image correspond to the depth of the depth less than alphabetical " B " of alphabetical " A " in real image.It is in addition, saturating in micro-cavity structure 11Bright charged particle 21 is the silicon dioxide granule with positive charge, and transparent medium 22 is hydrocarbon solution, and transparent medium 22 is full ofThe cavity of micro-cavity structure 11.Micro-cavity structure 11 is spherical microcavity structure 11, the first transparent conductive substrate 31, micro-cavity structure 11 andTwo transparent conductive substrates 32, which correspond, to be set.Display device 1 is LED display device 1.
303 memory of information comparison module contains the electric signal of corresponding alphabetical " A " depth and the telecommunications of corresponding alphabetical " B " depthNumber；Image information capture module 301 catches the 2D image informations shown in Fig. 7, and message processing module 302 is different according to picture depthImage information is converted into electric signal, then information comparison module 303 by the electric signal of reception compared with standard electric signal,Signal output module 304 sends following electrical instruction according to the comparative result of information comparison module 303：
The transparency electrode of the remote display device 1 of the micro-cavity structure 11 of corresponding letter " A " is cathode, close to display device 1Transparency electrode no power；The transparency electrode of the close display device 1 of the micro-cavity structure 11 of corresponding letter " B " is cathode, remoteThe transparency electrode no power of display device 1, it is remote based on what identical charges repel each other, as shown in figure 8, corresponding to the microcavity of letter " A " in I portionsTransparent charged particle 21 in structure 11 is moved to the direction close to display device 1, the micro-cavity structure of corresponding letter " B " in II portionsTransparent charged particle 21 in 11 is moved to the direction away from display device 1.
When the 2D images shown by display device 1 pass through the microlens array 2, as shown in figure 9, corresponding display pattern wordThe light of female " A " is refracted out earlier；As shown in Figure 10, the light of corresponding character " B " is relatively late refracted out, and is formed3D rendering it is as shown in figure 11, i.e. the different depth of display pattern alphabetical " A " and display pattern letter " B " is complete in the 3 d imageDisplay entirely, and wherein H is the distance between lenticule and 2D image primitives, under different conditions, lenticule and 2D image primitivesDistance is different, i.e., H is also different.L1For alphabetical " A " the Depth Imaging plan range of display pattern, L2It is deep for display pattern alphabetical " B "Spend imaging plane distance.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Transparency electrode is set in each micro-cavity structure opposite both sides, by adjusting the transparency electrode of side and transparent powered micro-The position of transparent charged particle in the identical revertive control difference micro-cavity structure with phase of the powered polarity of grain, and then it is applied to 3DIn display device as microlens array in use, due to transparent charged particle 21 under different voltage controls in microcavity body knotThe lens shape of formation, refractive index, position are different in structure 11, and cause the display of different lenticule Yu 3D display deviceThe distance H of 2D image primitives also can be different in equipment, can derive that Depth Imaging plan range L is according to Gauss imagingOn the premise of polarity of electrode and its size determine, focal length f and distance H is determine value, by above-mentioned public affairsFormula understands Depth Imaging plan range L to determine value, and then L values are different under different polarity of electrode and size, therefore utilizes thisShown 3D rendering is embodied except imaging depth changes after the microlens array processing of application so that shown 3D rendering is moreTo be vivid, true to nature.Above-mentioned transparent medium is full of the cavity of micro-cavity structure.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this areaFor art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiiesChange, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.