CN104597536A - Scatter plate and display device - Google Patents
Scatter plate and display device Download PDFInfo
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- CN104597536A CN104597536A CN201410850585.6A CN201410850585A CN104597536A CN 104597536 A CN104597536 A CN 104597536A CN 201410850585 A CN201410850585 A CN 201410850585A CN 104597536 A CN104597536 A CN 104597536A
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 39
- 230000010287 polarization Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 210000002858 crystal cell Anatomy 0.000 claims description 26
- 230000000694 effects Effects 0.000 abstract description 16
- 230000035807 sensation Effects 0.000 abstract description 13
- 239000000758 substrate Substances 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009877 rendering Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0263—Diffusing elements; Afocal elements characterised by the diffusing properties with positional variation of the diffusing properties, e.g. gradient or patterned diffuser
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- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
Abstract
The invention discloses a scatter plate and a holographic display device, wherein the holographic display device comprises a display panel unit, a lens component and a liquid crystal box; the display panel unit is used for providing a 2D image of a polarization ray; the lens component is used for performing orientated transmission on the ray to realize a light splitting effect; the liquid crystal box is positioned between the display panel and the lens component, and used for performing 2D and 3D conversion on the display images of the display panel; the device further comprises a scatter plate which is positioned between the liquid crystal box and the display panel unit, or between the liquid crystal box and the lens component, or positioned at one side, far from the display panel unit, of the lens component, and used for scattering light; the scatter plate comprises a plurality of scatter units, radial sections of which are gradually changed. According to the scheme adopted by the invention, the scatter plate is additionally arranged, so that moire patterns and granular sensation can be effectively reduced, and the picture display quality is improved.
Description
Technical field
The application relates to display technique field, particularly relates to a kind of scatter plate and holographic display.
Background technology
In existing display technique, liquid crystal indicator shows image by utilizing electric field to carry out adjustment to the light transmission of the liquid crystal of dielectric anisotropy.Typical liquid crystal indicator mainly comprises display panel, microlens array, in the face of the transparent flat plate of microlens array, at electrically conductive layer or the gradient electrode layer on microlens array and transparent flat plate surface, be filled in the liquid crystal between microlens array and transparent flat plate, and be connected to the electrode of two electrically conductive layers or gradient electrode layer.
But, there is the generation that periodic lenslet array can cause moire fringes, thus affect the image sharpness of stereo display, easily cause the dizzy sense of spectators.In addition, bore hole stereo display uses lens subassembly, can form some tiny particles at picture, affect the sharpness of picture, the sensation that formation picture is coarse, and particle can be allowed more obvious due to the amplification of lens.
Summary of the invention
The technical matters that the application mainly solves is to provide a kind of scatter plate and holographic display, can eliminate moire fringes and reduce granular sensation, improving image display quality.
For solving the problems of the technologies described above, the technical scheme that the application adopts is: provide a kind of scatter plate, and described scatter plate comprises the scattering unit of several radial cross-sectional shape gradual change successively.
Wherein, the scattering unit of described radial cross-sectional shape gradual change is successively the waveform of radial cross-sectional shape gradual change successively.
Wherein, the scattering unit of described radial cross-sectional shape gradual change is successively the triangle of radial cross-sectional shape gradual change successively.
Wherein, the scattering unit of described radial cross-sectional shape gradual change is successively the trapezoidal of radial cross-sectional shape gradual change successively.
Wherein, the radial section area of described scattering unit is cyclical variation.
For solving the problems of the technologies described above, another technical scheme that the application adopts is: provide a kind of holographic display, described display device comprises display panel unit, lens subassembly, liquid crystal cell; Described display panel unit is for providing the 2D image of polarization light; Described lens subassembly is used for carrying out directional transmissions to light, realizes a point light action; Described liquid crystal cell is between display panel and lens subassembly, for carrying out 2D and 3D conversion to the display image of described display panel, wherein, described device also comprises scatter plate, described scatter plate is between described liquid crystal cell and display panel unit, or between described liquid crystal cell and lens subassembly, or be positioned at the side of described lens subassembly away from described display panel unit, for carrying out scattering to light; Described scatter plate comprises the scattering unit of several radial cross-sectional shape gradual change successively.
Wherein, the scattering unit of described radial cross-sectional shape gradual change is successively the waveform of radial cross-sectional shape gradual change successively.
Wherein, the scattering unit of described radial cross-sectional shape gradual change is successively the triangle of radial cross-sectional shape gradual change successively.
Wherein, the scattering unit of described radial cross-sectional shape gradual change is successively the trapezoidal of radial cross-sectional shape gradual change successively.
Wherein, the radial section area of described scattering unit is cyclical variation.
The beneficial effect of the application is: the situation being different from prior art, the application is by being set to comprise the scattering unit of several radial cross-sectional shape gradual change successively by the scatter plate being applied to holographic display, original light path can be changed, and the light after reflecting the incident ray on sagittal plane is still on this sagittal plane, for the incident ray not on sagittal plane, emergent ray Off-Radial plane, thus realize carrying out scattering to reduce moire fringes and the granular sensation of lens subassembly generation to light, improve image display quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the application's scatter plate one embodiment;
Fig. 2 is the structural representation of another embodiment of the application's scatter plate;
Fig. 3 is the structural representation of the application's scatter plate embodiment again;
Fig. 4 is the structural representation of the another embodiment of the application's scatter plate;
Fig. 5 is the schematic diagram that the application's scattering unit changes original light path one embodiment;
Fig. 6 is the structural representation of an embodiment of the application's holographic display;
Fig. 7 is the structural representation of another embodiment of the application's holographic display;
Fig. 8 is the easy structure schematic diagram of an embodiment again of the application's holographic display;
Fig. 9 is the structural representation of the application's liquid crystal cell one embodiment;
Figure 10 a is polarized light when inciding holographic display, the index path under the non-powering state of liquid crystal cell;
Figure 10 b is polarized light when inciding holographic display, the index path under liquid crystal cell powering state;
Figure 11 is the schematic diagram that the application's scattering unit changes original another embodiment of light path.
Embodiment
In below describing, in order to illustrate instead of in order to limit, propose the detail of such as particular system structure, interface, technology and so on, thoroughly to understand the application.But, it will be clear to one skilled in the art that and also can realize the application in other embodiment not having these details.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders the description of the application.
The application aims to provide a kind of scatter plate and holographic display, to reduce moire fringes and granular sensation, improves image display quality.
Refer to Fig. 1 to Fig. 4, Fig. 1 is the structural representation of the application's scatter plate one embodiment.Fig. 2 is the structural representation of another embodiment of the application's scatter plate.Fig. 3 is the structural representation of the application's scatter plate embodiment again.Fig. 4 is the structural representation of the another embodiment of the application's scatter plate.
Scatter plate shown in Fig. 1 to Fig. 4 is applied to holographic display, for carrying out scattering to light to reduce moire fringes and granular sensation.Scatter plate comprises the scattering unit of several radial cross-sectional shape gradual change successively.Any scattering unit is incomplete same in the Arbitrary Shape Cross Section size perpendicular to its bearing of trend, the radial cross-sectional shape gradual change successively of any two adjacent scattering units.
Further, the scattering unit of radial cross-sectional shape gradual change is successively the waveform of radial cross-sectional shape gradual change successively.
Further, the scattering unit of radial cross-sectional shape gradual change is successively the triangle of radial cross-sectional shape gradual change successively.
Further, the scattering unit of radial cross-sectional shape gradual change is successively the trapezoidal of radial cross-sectional shape gradual change successively.
Further, the radial section area of scattering unit is cyclical variation.
Particularly, as shown in Fig. 1 a, 1b, the scattering unit of radial cross-sectional shape gradual change is successively the waveform of radial cross-sectional shape gradual change successively.Alternatively, the radial section area of scattering unit is cyclical variation, and the scattering unit shown in Fig. 1 is the scattering unit in one of them cycle.
As shown in Figure 2, the scattering unit of radial cross-sectional shape gradual change is successively the triangle of radial cross-sectional shape gradual change successively.Alternatively, the radial section area of scattering unit is cyclical variation, and the scattering unit shown in Fig. 2 is the scattering unit in one of them cycle.
As shown in Figure 3, the scattering unit of radial cross-sectional shape gradual change is successively the trapezoidal of radial cross-sectional shape gradual change successively.Alternatively, the radial section area of scattering unit is cyclical variation, and the scattering unit shown in Fig. 3 is the scattering unit in one of them cycle.
As shown in Figure 4, the scattering unit of radial cross-sectional shape gradual change is successively the compound lens of radial cross-sectional shape gradual change successively, is made up of convex lens and concavees lens.Alternatively, the radial section area of scattering unit is cyclical variation, and the scattering unit shown in Fig. 4 is the scattering unit in one of them cycle.
Scattering unit shown in Fig. 1 to Fig. 4 has following characteristics: the emergence angle same sagittal plane being incided the incident ray of scatter plate with equal angular diverse location is incomplete same.Wherein, the plane perpendicular to the bearing of trend of scattering unit is called sagittal plane.Be described (be understandable that, the scattering principle of the scattering unit of other shapes is similar, does not repeat herein) for the scattering unit in Fig. 1 below.
See also Fig. 5, Fig. 5 is the schematic diagram that in Fig. 1, scattering unit changes original light path one embodiment.Wherein, Fig. 5 a is the schematic diagram of the original light path of the change embodiment of a scattering unit of the application's scatter plate, and Fig. 5 b is the schematic diagram of the original light path of the change embodiment of another scattering unit of scatter plate in Fig. 1.
As shown in Figure 5 a, incident ray is incident on sagittal plane, and reflect through scattering unit, the light after refraction is still on this sagittal plane.Wherein, the scattering unit on scatter plate reflects the incident ray on sagittal plane, makes the light after reflecting still on this sagittal plane.Simultaneously, for the incident ray not on sagittal plane, emergent ray is also by Off-Radial plane, when incident light being divided into radial component and axially (i.e. the bearing of trend of scattering unit) component is to consider, scattering unit is identical with the incident light of sagittal plane to the refraction action of its radial component.
As shown in Figure 5 b, incident ray is incident on sagittal plane with identical angle, and reflect through scattering unit, the light after refraction is still on this sagittal plane.
From Fig. 5 a and Fig. 5 b, incident ray can change original light path after scattering unit.For some scattering units, on same sagittal plane, an equal angular diverse location incides the incident ray of same scattering unit, and the emergence angle after refraction is also incomplete same, thus produces " scattering " to a certain extent.Be understandable that, the scattering of " scattering " herein random change in direction not on ordinary meaning, the scattering of this scatter plate mainly realizes the scattering on left and right directions that counterpart observes when seeing display.
Be understandable that, the scattering principle of the scattering unit of other shapes is similar, does not repeat herein.
In like manner, the scattering unit of the scatter plate in Fig. 2-4 also has following characteristic: the light after reflecting the incident ray on sagittal plane is still on this sagittal plane, and for the incident ray not on sagittal plane, emergent ray is also by Off-Radial plane.
For the scattering unit of the scatter plate shown in Fig. 2, Fig. 3, the refraction number of times same sagittal plane being incided the incident ray of a scattering unit with equal angular diverse location is incomplete same, therefore, the shooting angle after refraction is also incomplete same, has " scattering " effect.
For the scattering unit of the scatter plate shown in Fig. 4, the compound lens that scattering unit is made up of convex lens and concavees lens, the refractive index of convex lens and concavees lens is incomplete same, has " scattering " effect, can reach similar light modulation effect.
Be understandable that, the scattering unit of scatter plate is not limited to the structure disclosed in above-described embodiment, and can also be the combination of various structures, the quantity of the scattering unit in one-period can be arranged according to actual needs.
Scattering unit can adopt single-layer and transparent material to make, and also can be made up of the multi-layer transparent material with refractive index difference.Scattering unit on scatter plate, can adopt one or more combination following: lens, compound lens, prism, composite prism, prism and lens combination, be not limited to this certainly, and the scattering unit on scatter plate can also adopt other array configuration.
When scattering unit adopts lens or compound lens, the focus of lens or compound lens not on a display panel, can remove the better effects if of moire fringes.
Such scheme, by scatter plate being set to be made up of the scattering unit of several radial cross-sectional shape successively gradual change, make scatter plate can change original light path, and the light after reflecting the incident ray on sagittal plane is still on this sagittal plane, for the incident ray not on sagittal plane, emergent ray Off-Radial plane, thus realize carrying out scattering to reduce moire fringes to light.
Consult Fig. 6 to Fig. 8, Fig. 6 is the structural representation of an embodiment of the application's holographic display.Fig. 7 is the structural representation of another embodiment of the application's holographic display.Fig. 8 is the structural representation of an embodiment again of the application's holographic display.Wherein, holographic display can be mobile phone, computer, LCD TV etc.
As shown in Figure 6, holographic display comprise be oppositely arranged display panel unit 110, transparent flat plate 120, be arranged at scatter plate 130, lens subassembly 140, liquid crystal cell 150 between display panel unit 110 and transparent flat plate 120.Wherein, liquid crystal cell 140 is between display panel 110 and lens subassembly 150.Scatter plate 130 is between liquid crystal cell 140 and display panel unit 110.Scatter plate 130 comprises the scattering unit of several radial cross-sectional shape gradual change successively.Scatter plate 130 is the scatter plate described in the various embodiments described above, specifically refers to the associated description in each above-mentioned embodiment, does not repeat to repeat herein.
Display panel unit 110 is for providing the 2D image of polarization light.Scatter plate 130 is for carrying out scattering to light.Liquid crystal cell 140 is for carrying out 2D and 3D conversion to the display image of display panel unit 110.Lens subassembly 150, for carrying out directional transmissions to light, realizes a point light action.
The difference of Fig. 7 and Fig. 6 is that scatter plate 130 is between liquid crystal cell 140 and lens subassembly 150.
The difference of Fig. 8 and Fig. 6 is that scatter plate 130 is positioned at the side of lens subassembly 150 away from display panel unit 110.
See also Fig. 9 to Figure 10, Fig. 9 is the structural representation of the application's liquid crystal cell one embodiment.Figure 10 a is polarized light when inciding holographic display, the index path under the non-powering state of liquid crystal cell.Figure 10 b is polarized light when inciding holographic display, the index path under liquid crystal cell powering state.
As shown in Figure 9, the liquid crystal cell 140 in Fig. 6 to Fig. 8 comprise be oppositely arranged first substrate 141, second substrate 142, be clamped in liquid crystal layer 143 between first substrate 141 and second substrate 142.Wherein, first substrate 141 is CF (Color Filter, colored filter) substrate, and the side of the contiguous second substrate 142 of first substrate 141 is provided with public electrode (not shown).Second substrate 142 is TFT (Thin Film Transistor, thin film transistor (TFT)) array base palte, the side of the contiguous first substrate 141 of second substrate 142 is stacked arranges metal level 1421, insulation course 1422 and electrode layer 1423, and electrode layer 1423 comprises multiple spaced electrode.
As shown in Figure 10 a, liquid crystal cell 140 is when being not applied to voltage, and the yawing moment of the liquid crystal molecule corresponding to adjacent two strip shaped electric poles is identical.Now, the center and peripheral of the liquid crystal layer that strip shaped electric poles is corresponding does not all have refringence.The 2D image of the polarization light that display panel unit 110 provides through scatter plate 130 scattering, penetrate liquid crystal cell 140, and incide human eye after lens unit 150 light splitting, what user was watched by holographic display is the 2D image not having parallax.That is, it is seen that the 2D image of polarization light that provides of display panel unit 110.
As shown in fig. lob, when in liquid crystal cell 140, each strip shaped electric poles is applied in certain voltage, liquid crystal molecule deflects because being subject to electric field action, there is refringence in the center and peripheral of the liquid crystal layer that strip shaped electric poles is corresponding, and the PHASE DISTRIBUTION of similar lens can be formed when meeting focusing mode, the 2D image of the polarization light that display panel unit 110 provides by liquid crystal cell 140 is converted to 3D rendering, 3D rendering is through scatter plate 130 scattering, and human eye is incided after lens unit 150 light splitting, what user can be watched by holographic display is have a left side, the 3D rendering of right parallax.
Holographic display in the application is between liquid crystal cell 140 and display panel unit 110, or between liquid crystal cell 140 and lens subassembly 150, or lens subassembly 150 is away from increase by scatter plate of display panel unit 110, scatter plate 130 can reduce moire fringes and the granular sensation of lens subassembly 150 generation.
Wherein, scatter plate comprises the scattering unit of several radial cross-sectional shape gradual change successively.For scattering unit, the plane perpendicular to the bearing of trend of scattering unit is called sagittal plane, the gradual change successively of the cross section of scattering unit on each sagittal plane.For lens subassembly, the plane perpendicular to the bearing of trend of lens unit is called sagittal plane.
The waveform being radial cross-sectional shape successively gradual change for the scattering unit of radial cross-sectional shape successively gradual change below illustrates that scatter plate carries out scattering to reduce moire fringes to light in holographic display:
Refer to Figure 11, Figure 11 is the schematic diagram that the application penetrates that unit changes original another embodiment of light path.Wherein, as shown in figure 11, a lens unit of the lens subassembly on a scattering unit of scatter plate and correspondence position can change the light path of incident ray.
As shown in fig. lla, incident ray is incident from sagittal plane, through lens unit, first time refraction occurs, and the light after refraction, through scattering unit, second time refraction occurs, and the light after each refraction is still on this sagittal plane.
The difference of Figure 11 b and Figure 11 a is, the position of scattering unit and lens unit changes.As shown in figure lib, incident ray is incident from sagittal plane, through scattering unit, first time refraction occurs, and the light after refraction, through lens unit, second time refraction occurs, and the light after each refraction is still on this sagittal plane.
From Fig. 5 a and Fig. 5 b, incident ray can change original light path after scattering unit.For some scattering units, on same sagittal plane, an equal angular diverse location incides the incident ray of same scattering unit, and the emergence angle after refraction is also incomplete same, thus produces " scattering " to a certain extent.Be understandable that, the scattering of " scattering " herein random change in direction not on ordinary meaning, the scattering of this scatter plate mainly realizes the scattering on left and right directions that counterpart observes when seeing display.
In the application, the scattering unit of scatter plate has following characteristic: after the light refraction from sagittal plane incidence, makes the light after reflecting and incident ray be in same plane (that is, sagittal plane).Simultaneously, for the incident ray not on sagittal plane, emergent ray is also by Off-Radial plane, when incident light being divided into radial component and axially (i.e. the bearing of trend of scattering unit) component is to consider, scattering unit is identical with the incident light of sagittal plane to the refraction action of its radial component.
When the scattering unit of radial cross-sectional shape successively gradual change be radial cross-sectional shape successively the triangle (as shown in Figure 2) of gradual change or trapezoidal (as shown in Figure 3) time, the refraction number of times same sagittal plane being incided the incident ray of a scattering unit with equal angular diverse location is incomplete same, therefore, shooting angle after refraction is also incomplete same, has " scattering " effect.
When the scattering unit of radial cross-sectional shape successively gradual change is the scattering unit of scatter plate as shown in Figure 4, the compound lens that scattering unit is made up of convex lens and concavees lens, the refractive index of convex lens and concavees lens is incomplete same, has " scattering " effect, can reach similar light modulation effect.
Be understandable that, the scattering unit of scatter plate is not limited to the structure disclosed in above-described embodiment, and can also be the combination of various structures, the quantity of the scattering unit in one-period can be arranged according to actual needs.
It is worth mentioning that, the holographic display of the application, under 2D state, light direction of propagation after superrefraction does not change substantially, does not substantially affect 2D display effect.Time under 3D state, because scattering unit is to interception of rays, incident ray is retrodeviated from original travel path through scattering unit, makes left eye and right eye can see that some did not belong to the light in respective viewing area originally respectively, form slight scattering.And this scattering defines the effect that is similar to low-pass filter, picture can be allowed to become softer, this scattering simultaneously makes moire fringes be filtered as a kind of high-frequency signal.
Be understandable that, scattering degree is higher, and moire fringes is lighter, and picture is also more fine and smooth soft simultaneously, but scattering degree is too high will introduce more crosstalk, makes picture fuzzyyer, and 3D display effect and 2D display effect also can be deteriorated simultaneously.For this situation, in actual application, can, by controlling scattering degree, to realize both ensureing to reduce moire fringes and granular sensation, 3D and 2D display effect will be caused obviously to degenerate because of the too high introducing crosstalk of scattering degree again.
Wherein, the scattering degree of scatter plate depends on the ratio λ of angle theta between scatter plate and lens subassembly and the width of scattering unit and the width of lens unit.θ is the angle that the bearing of trend of the bearing of trend of the scattering unit of scatter plate 130 and the lens unit of lens subassembly 140 is formed, the width of scattering unit is the width in the cross section of scattering unit on sagittal plane, and the width of scattering unit is the maximum radial width of radial section.
When θ=90 °, the light modulation direction (i.e. the sagittal plane of scatter plate) of scatter plate 130 is perpendicular to the sagittal plane of lens subassembly 140, scatter plate 130 can not produce crosstalk between viewing areas, but this modes of emplacement is difficult to effectively eliminate moire fringes and granular sensation.
When θ=0 °, the light modulation direction of scatter plate 130 is consistent with the sagittal plane of lens subassembly 140, scatter plate 130 can effectively eliminate moire fringes and granular sensation, now eliminate moire fringes and granular sensation minimum, but the crosstalk formed between viewing areas is relatively large, 3D display effect will be caused to be deteriorated.
Therefore, make can either effectively eliminate moire fringes and granular sensation, have and 3D display effect can not be caused to be deteriorated, θ demand fulfillment 0 ° of < θ < 90 °, in the present embodiment, 10 °≤θ≤89 °, preferably, 70 °≤θ≤80 ° can be selected.
When ratio λ >=1 of the width of scattering unit and the width of lens unit, formed and significantly interfere, cause picture coarse between scatter plate 130 and lens subassembly 150, sharpness declines.If but the ratio λ of the width of the width of scattering unit and lens unit is too small, the dispersion effect of scatter plate may be caused to be deteriorated.Therefore, balance to be reached between scattering process and image sharpness, the ratio λ demand fulfillment 0 < λ < 1 of the width of scattering unit and the width of lens unit, in the present embodiment, 1/20≤λ≤4/5, preferably, 1/10≤λ≤1/4 can be selected.
Such scheme, holographic display is by setting up one by the scatter plate comprising several radial cross-sectional shape scattering unit of gradual change successively, original light path is changed by scatter plate, and the light after reflecting the incident ray on sagittal plane is still on this sagittal plane, for the incident ray not on sagittal plane, emergent ray Off-Radial plane, thus realize carrying out scattering to reduce moire fringes and the granular sensation of lens subassembly generation to light, improve image display quality.
In more than describing, in order to illustrate instead of in order to limit, propose the detail of such as particular system structure, interface, technology and so on, thoroughly to understand the application.But, it will be clear to one skilled in the art that and also can realize the application in other embodiment not having these details.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders the description of the application.
Claims (10)
1. a scatter plate, is characterized in that, described scatter plate comprises the scattering unit of several radial cross-sectional shape gradual change successively.
2. scatter plate according to claim 1, is characterized in that, the scattering unit of described radial cross-sectional shape gradual change is successively the waveform of radial cross-sectional shape gradual change successively.
3. scatter plate according to claim 1, is characterized in that, the scattering unit of described radial cross-sectional shape gradual change is successively the triangle of radial cross-sectional shape gradual change successively.
4. scatter plate according to claim 3, is characterized in that, the scattering unit of described radial cross-sectional shape gradual change is successively the trapezoidal of radial cross-sectional shape gradual change successively.
5. the scatter plate according to any one of claim 1-4, is characterized in that, the radial section area of described scattering unit is cyclical variation.
6. a holographic display, described display device comprises display panel unit, lens subassembly, liquid crystal cell; Described display panel unit is for providing the 2D image of polarization light; Described lens subassembly is used for carrying out directional transmissions to light, realizes a point light action; Described liquid crystal cell is between display panel and lens subassembly, and for carrying out 2D and 3D conversion to the display image of described display panel, it is characterized in that, described device also comprises scatter plate,
Described scatter plate, between described liquid crystal cell and display panel unit, or between described liquid crystal cell and lens subassembly, or is positioned at the side of described lens subassembly away from described display panel unit, for carrying out scattering to light;
Described scatter plate comprises the scattering unit of several radial cross-sectional shape gradual change successively.
7. device according to claim 6, is characterized in that, the scattering unit of described radial cross-sectional shape gradual change is successively the waveform of radial cross-sectional shape gradual change successively.
8. device according to claim 6, is characterized in that, the scattering unit of described radial cross-sectional shape gradual change is successively the triangle of radial cross-sectional shape gradual change successively.
9. device according to claim 8, is characterized in that, the scattering unit of described radial cross-sectional shape gradual change is successively the trapezoidal of radial cross-sectional shape gradual change successively.
10. the device according to any one of claim 6-8, is characterized in that, the radial section area of described scattering unit is cyclical variation.
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| CN201410850585.6A CN104597536A (en) | 2014-12-30 | 2014-12-30 | Scatter plate and display device |
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| CN201410850585.6A CN104597536A (en) | 2014-12-30 | 2014-12-30 | Scatter plate and display device |
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