CN206057815U - Holographic display device - Google Patents
Holographic display device Download PDFInfo
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- CN206057815U CN206057815U CN201621048195.8U CN201621048195U CN206057815U CN 206057815 U CN206057815 U CN 206057815U CN 201621048195 U CN201621048195 U CN 201621048195U CN 206057815 U CN206057815 U CN 206057815U
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Abstract
本实用新型提供一种全息显示装置，包括：显示面板，所述显示面板被划分为多个子像素，每个子像素包括多个孙像素，每个孙像素的透光率可调；背光源，用于向所述显示面板提供参考光；相位层，包括多个透光的相位部；所述相位部用于调节透过该相位部的光线的相位，同一子像素所对应的多个相位部的相位调节量互不相同；控制单元，用于获取所述显示面板的每个子像素待透过光线的目标相位，并确定每个子像素中与其目标相位所对应的目标孙像素；还用于根据所述立体图像的图像信息获取每个子像素待透过光线的目标强度，并调节目标孙像素的透光率。本实用新型能够显示不同的立体图像，从而实现动态显示。
The utility model provides a holographic display device, comprising: a display panel, the display panel is divided into a plurality of sub-pixels, each sub-pixel includes a plurality of grandchildren pixels, and the light transmittance of each grandson pixel is adjustable; To provide reference light to the display panel; the phase layer includes a plurality of light-transmitting phase parts; the phase part is used to adjust the phase of the light passing through the phase part, and the phase parts corresponding to the same sub-pixel The phase adjustment amounts are different from each other; the control unit is used to obtain the target phase of the light to be transmitted by each sub-pixel of the display panel, and determine the target grandson pixel corresponding to the target phase in each sub-pixel; Obtain the target intensity of the light to be transmitted by each sub-pixel from the image information of the stereoscopic image, and adjust the light transmittance of the target grandchildren pixel. The utility model can display different three-dimensional images, thereby realizing dynamic display.
Description
Technical field
This utility model is related to holographic display field, and in particular to a kind of holographic display.
Background technology
Holographic technique is using record and the reproduction interfered with diffraction principle record the real 3-D view of reconstructed object
Technology.The holographic technique first step is shooting process, and the shooting process is as shown in figure 1, the coherent light of the transmitting of relevant source 1 is divided
Beam mirror 2 is divided into two parts, part directive object 4 after reflecting mirror 3 reflects, and the reflected light on 4 surface of object and scatters light to
Object light wave is formed up to after holographic dry plate 5；Another part coherent light is mapped to holographic dry after the reflection of reflecting mirror 6 as reference light wave
On plate 5.Just conoscope image can be obtained after exposing to holographic dry plate 5, i.e., including phase place and the holographic display image of strength information.The
Two steps are imaging processes, and the imaging process is as shown in Fig. 2 utilize and reference light wave identical light-wave irradiation holographic dry plate 5, human eye
In transmitted light watch holographic dry plate 5, just it can be seen that at the original with original identical reproduction image (virtual image).
But, after holographic dry plate is formed, phase place and strength information have all been fixed, and are also just only able to display piece image.Cause
How this, make the phase place that records on holographic dry plate and strength information adjustable, urgently solved with showing that different images become this area
Technical problem certainly.
Utility model content
This utility model is intended at least solve one of technical problem present in prior art, it is proposed that a kind of holographic display
Device, can show different images, and then realizes Dynamic Announce.
In order to solve one of above-mentioned technical problem, this utility model provides a kind of holographic display, including：
Display floater, the display floater are divided into multiple sub-pixels, and each sub-pixel includes multiple grandson's pixels, each
The light transmittance of grandson's pixel is adjustable；
Backlight, is arranged on the incident side of the display floater, for providing reference light to the display floater；
Phase layer, including the phase place portion of multiple printing opacities, one a pair of the position of the position in the phase place portion and grandson's pixel
Should；The phase place portion is used for the phase place for adjusting the light through the phase place portion, the multiple phase place portions corresponding to same sub-pixel
Phase adjusted amount is different；
Control unit, for every height picture of the display floater is obtained according to the positional information of stereo-picture to be shown
Element treats the target phase of transmitted light, and determine in each sub-pixel with the target grandson's pixel corresponding to its target phase；It is described
Control unit is additionally operable to the mesh that transmitted light is treated according to image information acquisition each sub-pixel of the stereo-picture to be shown
Mark intensity, and the light transmittance of target grandson's pixel in each sub-pixel is adjusted according to the target strength.
Preferably, when a width stereo-picture is shown, the quantity of the target grandson's pixel in each sub-pixel is one；It is described
The structure in phase place portion meets：When the target grandson pixel light in the multiple phase place portions corresponding to the sub-pixel one
During individual phase place portion, the reverse extending line of the light of the phase place portion outgoing is focused at corresponding with the target phase of the sub-pixel
Position.
Preferably, when a width stereo-picture is shown, the quantity of the target grandson's pixel in each sub-pixel is two；It is described
The structure in phase place portion meets：When the light of two target grandson pixels is respectively through the multiple phase places corresponding to the sub-pixel
During two phase place portions in portion, the reverse extending line of the light of two phase place portion outgoing is focused at the target with the sub-pixel
The corresponding position of phase place.
Preferably, the backlight is the collimated backlight lighted along display floater thickness direction.
Preferably, the backlight can launch light towards multiple different directions, and described control unit is additionally operable to adjust
The radiation direction passed through by grandson's pixel.
Preferably, the display floater includes the array base palte arranged to box and to box substrate, described to court on box substrate
The side of the array base palte is provided with color film layer, the color film layer includes multiple color blocking blocks, the color blocking block and the son
Pixel is corresponded；
The phase layer is arranged on described on box substrate, and is located at the color film layer described to the same of box substrate
Side.
Preferably, the phase layer be located at it is described to box substrate and the color film layer between.
Preferably, each described phase place portion includes multiple gratings, and the screen periods in the same phase place portion are identical；Together
In multiple described phase place portion corresponding to one sub-pixel, the screen periods in the different phase place portions are different.
Preferably, be provided with planarization layer between the grating and the color film layer, the refractive index of the grating with it is described
The refractive index of planarization layer is different.
Preferably, the grating is made up of transparent resin material.
In this utility model, as each sub-pixel includes the adjustable grandson's pixel of multiple light transmittances, each sub-pixel
Multiple grandson's pixels correspond to the mutually different multiple phase place portions of phase adjusted amount respectively, therefore, by adjusting in each sub-pixel
Printing opacity position (that is, adjusting a part of grandson's pixel transmittance, another part grandson's pixel is light tight), each sub-pixel can be projected
The phase place of light is adjusted, also, by adjusting the light transmittance of each grandson's pixel, can be irradiant to each sub-pixel
Intensity is adjusted.When a width stereo-picture is shown, each sub-pixel target corresponding with stereo-picture to be shown is obtained
Phase place and target strength, and go out light phase and intensity by adjust each sub-pixel, to reach corresponding target phase and mesh
Mark intensity so that human eye see with original body position, color, brightness all same reproduced image.When the different images of display
When, only the light transmittance of grandson's pixel need to be adjusted i.e. according to the target phase corresponding to each image to be displayed and target strength
Can, so as to reappear different stereo-pictures, and then dynamic holographic display can be realized.
Description of the drawings
Accompanying drawing is further understood to of the present utility model for providing, and constitutes a part for description, and following
Specific embodiment be used for together explaining this utility model, but do not constitute to restriction of the present utility model.In the accompanying drawings：
Fig. 1 is the shooting process schematic diagram of existing holography；
Fig. 2 is the display process schematic of existing holography；
Fig. 3 is the structural representation of the holographic display provided in embodiment of the present utility model；
Fig. 4 is that the principle when holographic display provided in embodiment of the present utility model carries out holographic display is illustrated
Figure；
Fig. 5 a are the first distribution modes and correspondence of the grandson's pixel in embodiment of the present utility model in each sub-pixel
Phase place portion distribution schematic diagram；
Fig. 5 b are second distribution modes and correspondence of the grandson's pixel in embodiment of the present utility model in each sub-pixel
Phase place portion distribution schematic diagram；
Fig. 6 a are that the light of embodiment sub-pixel printing opacity of the present utility model is shown with the first corresponding relation in phase place portion
It is intended to；
Fig. 6 b are that the light of embodiment sub-pixel printing opacity of the present utility model is shown with second corresponding relation in phase place portion
It is intended to；
Fig. 6 c are that the light of embodiment sub-pixel printing opacity of the present utility model is shown with the third corresponding relation in phase place portion
It is intended to；
Fig. 6 d are that the light of embodiment sub-pixel printing opacity of the present utility model is shown with the 4th kind of corresponding relation in phase place portion
It is intended to；
Fig. 7 a are that light path of the target grandson's pixel in embodiment of the present utility model in each sub-pixel when being one is illustrated
Figure；
Fig. 7 b are that light path of the target grandson's pixel in embodiment of the present utility model in each sub-pixel when being two is illustrated
Figure.
Wherein, reference is：
1：Coherent source；2：Beam splitter；3、6：Reflecting mirror；4：Object；5：Holographic dry plate；
10：Display floater；11：Array base palte；12：To box substrate；13：Color film layer；131：Color blocking block；14：Liquid crystal layer；S：
Pixel cell；p：Sub-pixel；P1～p16：Grandson's pixel；
20th, backlight；
30th, phase layer；R1～R16：Phase place portion.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein
Described specific embodiment is merely to illustrate and explains this utility model, is not limited to this utility model.
As one side of the present utility model, there is provided a kind of holographic display, as shown in figure 3, including display floater 10,
Backlight 20, phase layer 30 and control unit.Display floater 10 is divided into multiple sub-pixel p.As shown in Fig. 5 a to Fig. 5 b, often
Individual sub- pixel p includes 1～p16 of multiple grandson's pixel ps, and the light transmittance of each grandson's pixel is adjustable.Backlight 20 is arranged on display floater
10 incident side, for providing reference light to display floater 10.The incident side refer to array base palte 11 away to box panel
12 side.
Specifically, the light of backlight 20 can be white light, and multiple sub-pixel p of display floater 10 can be periodic arrangement
Red, green, blue sub-pixel, per three, continuous red, green, blue sub-pixel constitutes a pixel cell S.Here, red, green, blue
Pixel refers to, when red, green, blue sub-pixel produces certain transmitance, light through after the transmission of red, green, blue sub-pixel respectively
The color of red, green, blue is presented.By the light transmission capacity for adjusting each sub-pixel p in same pixel cell S, thus it is possible to vary sub-pixel p
Go out the brightness of light, pixel cell S after mixing, just can be made to be in a variety of colors.Certainly, each pixel cell S can also be wrapped
Include the sub-pixel p of other quantity and color.It should be noted that the color of the multiple grandson's pixels in same sub-pixel p is phase
With, when the transmitance of any one the grandson's pixel in a sub- pixel p is more than zero, the sub-pixel has light to pass through.Tool
Body ground, display floater 10 can be display panels, as shown in figure 3, display floater 10 includes the array base palte arranged to box
11 and to box substrate 12, array base palte 11 and to liquid crystal layer 14 is provided between box substrate 12, corresponding to every on array base palte 11
The position of individual grandson's pixel is provided with pixel electrode (not shown), array base palte 11 or to being additionally provided with common electrical on box substrate 12
Pole (not shown), when producing electric field between pixel electrode and public electrode, the liquid crystal molecule in grandson's pixel deflects, so as to adjust
The light transmittance of section grandson's pixel.To color film layer 13 is provided with box substrate 12, color film layer 13 includes multiple color blocking blocks 131, per height
Pixel p one color blocking block 131 of correspondence, light is by being presented corresponding color after the color blocking block 131.Corresponding to a sub- pixel p
Color blocking block 131 can be an entirety, it is also possible to be divided into many sub- color blocking blocks, per one grandson's picture of individual sub- color blocking block correspondence
Element, and light screening material is set between per two neighboring sub- color blocking block, form black matrix.Backlight 20 can also launch different face
The light of color (e.g., red, green, blue), at this moment, it is not necessary to make color film layer 13, but by the switching of 20 glow color of backlight,
And cause different colours the same pixel cell of light directive in different subpixel, in equally can causing same pixel cell
Different subpixel be in different colors, and then the color required for blending.
As shown in Fig. 5 a to Fig. 5 b, phase layer 30 includes the phase place portion R1～R16 of multiple printing opacities, the position in phase place portion and grandson
The position of pixel corresponds；The phase adjusted amount in the multiple phase place portions corresponding to same sub-pixel p is different, i.e. in Fig. 5 a
The phase adjusted amount of phase place portion R1～R9 is different, and in Fig. 5 b, the phase adjusted amount of phase place portion R1～R16 is different.Its
In, the phase place portion can specifically include multiple gratings.In addition, phase layer 30 can be arranged on display floater 10, it is also possible to set
Put outside display floater 10；That is, phase layer 30 can be arranged on array base palte 11 and between box substrate 12, it is also possible to arrange
In the side for deviating from array base palte 11 to box substrate 12.
Described control unit is for the every height according to the positional information of stereo-picture to be shown acquisition display floater 10
Pixel p treats the target phase of transmitted light, and determine in each sub-pixel p with the target grandson's pixel corresponding to its target phase；
Described control unit is additionally operable to treat transmitted light according to image information acquisition each sub-pixel p of the stereo-picture to be shown
Target strength, and the light transmittance of target grandson's pixel in each sub-pixel p is adjusted according to the target strength.Target grandson pixel with
The light transmittance of other outer grandson's pixels is equal to zero.The positional information includes that the depth of view information of stereo-picture to be shown (is stood
The distance between body image and human eye) and stereo-picture to be shown relative to human eye angle.Described image information includes figure
The colouring information and monochrome information of picture.
The shooting process of 3-D view can be carried out by way of simulation by computer, by calculating holographic technique
(Computer Generated Hologram, CGH) obtains the phase information and strength information (i.e. amplitude information) of Object light wave,
And stored.Wherein, simulate the ginseng provided by the backlight in reference light and this utility model used in shooting process
The light-wave information for examining light is identical.When holographic display is carried out, reference light is irradiated towards display floater 10, every when display floater 10
When the light transmitted at individual sub- pixel p reaches respective target phase and target strength and enters human eye, as shown in figure 4,
According to the reversibility of light path, human eye can be appreciated that exist and the color of the original, the solid of brightness all same in the position of the original
Image.If regard the stereo-picture as be made up of multiple " picture points ", then multiple sub-pixel p of each pixel cell S are passed through
The reverse extending line of light converge at one " picture point " in the stereo-picture.Wherein, sub-pixel p transmits light phase
Position determines radiation direction, so as to determine the position of the stereo-picture of display；The light intensity that sub-pixel p is transmitted is determined
Light luminance, so as to determine color and the brightness of stereo-picture.It should be appreciated that when identical light is incident to same pixel
During out of phase portion corresponding to unit, the light phase of institute of out of phase portion outgoing is different, and exit direction is different, for human eye
For, can be appreciated that each phase place portion emergent ray is assembled in its opposite direction, the convergence of rays position in different phase place portions is different
, but, when holographic display is carried out, once each sub-pixel is determined according to the positional information of stereo-picture to be shown
Target phase, it is possible to which control target grandson pixel corresponding with target phase is opened, and other grandson's pixels are simultaneously not turned on, then, people
The light sent by the same pixel cell for arriving soon is focused at same position, i.e., the position of above-mentioned " picture point ".
As each sub-pixel p includes the adjustable grandson's pixel of multiple light transmittances, multiple grandson's pixel difference of each sub-pixel p
The mutually different multiple phase place portions of phase adjusted amount are correspond to, therefore, by adjusting the printing opacity position in each sub-pixel p, can
To be adjusted to the light phase that each sub-pixel p is passed through, also, by adjusting the light transmittance of grandson's pixel, can be to each
The intensity of the light that sub-pixel p is passed through is adjusted.When show a width stereo-picture when, obtain each sub-pixel p with it is to be shown
Target phase corresponding to stereo-picture and target strength, and by adjusting the phase place of light of each sub-pixel p transmissions and strong
Degree, to reach corresponding target phase and target strength, so that human eye is seen and original body position, color, brightness all same
Reproducing stereoscopic pictures.When different images are shown, only need to be according to the target phase corresponding to each image to be displayed and mesh
Mark intensity is adjusted to the light transmittance of grandson's pixel, so as to show different stereo-pictures.When the frequency that image shows
When very fast, that is, realize dynamic holographic display.
This utility model is not especially limited to the quantity and arrangement mode of the grandson's pixel in each sub-pixel p, such as Fig. 5 a
Shown, each sub-pixel p includes 3 × 3 grandson 1～p9 of pixel p, correspondingly, phase place portion is provided with the position of each sub-pixel
R1～R9；Or as shown in Figure 5 b, each sub-pixel p includes 4 × 4 grandson's pixels, correspondingly, sets at the position of each sub-pixel
It is equipped with phase place portion R1～R16.It is understood that when the grandson's pixel quantity in a sub- pixel p is more, sub-pixel p is projected
The number of phases that light can reach is more, so as to more easily reach target phase, it is seen that image it is more clear.
When grandson's pixel transmittance rate in group pixel p is more than zero, the light that grandson's pixel is passed through exposes to a certain phase
During the portion of position, there is diffraction and produce certain angle of diffraction and enter human eye, the reverse extending line of some light it is corresponding " as
Assemble at point " place.When two grandson's pixel transmittance rates in group pixel p are more than zero, the light that two grandson's pixels are passed through respectively according to
Two phase place portions are incident upon, the phase adjusted amount in two phase place portions is different, so that the light that two grandson's pixel transmissions go out is not along
Same direction enters human eye, and the reverse extending line of two parts light is assembled at corresponding " picture point " place.
Specifically, when a width stereo-picture is shown, the quantity of the target grandson's pixel in each sub-pixel p is one, and
And, the structure in phase place portion meets：When the light of the target grandson pixel is in the multiple phase place portions corresponding to the sub-pixel
A phase place portion when, the reverse extending line of the light of the phase place portion outgoing is focused at relative with the target phase of the sub-pixel
The position answered.The position for meeting the phase place portion of above-mentioned condition can be corresponding with the position of target grandson's pixel, it is also possible to does not correspond to.
As shown in Figure 7a, the light of target sub-pixel p1 is after phase place portion R1, at least produces the different light in two directions, this two
After the different light in direction enters human eye, human eye just can be appreciated that its reverse extending line is focused at same " picture point ", such as the V in figure
Point.That is, phase place portion should meet, when the light of any grandson's pixel passes through the phase place portion, the phase place portion can project
Light with certain angle of diffraction.
Or, when a width stereo-picture is shown, the quantity of the target grandson's pixel in each sub-pixel p is two；Also,
The structure in the phase place portion meets：When the light of two target grandson pixels is respectively through multiple corresponding to the sub-pixel
During two phase place portions in phase place portion, the reverse extending line of the light of two phase place portion outgoing is focused at and the sub-pixel
The corresponding position of target phase.As shown in Figure 7b, the light of target grandson pixel p 1 is through phase place portion R1, target grandson pixel p 5
When phase place portion R5, after the light that phase place portion R1 and phase place portion R5 is projected enters human eye, human eye just can be appreciated that this part to light
The reverse extending line of light is focused at same " picture point ", such as the V points in figure.In this case, can be by arranging phase place portion
Concrete structure so that the light that same phase place portion projects is towards same direction, it is also possible to project different directions, as long as protecting
After two phase-plates, irradiant reverse extending line converges at a bit to the light of two target grandson's pixels of card.By
Described above to understand, in same pixel cell, after phase layer 30, the reverse extending line of light is equal for all target grandson pixels
It is focused at same " picture point ".
In holographic display of the present utility model, backlight 20 is specifically as follows luminous along display floater thickness direction
Collimated backlight, or can towards multiple different directions launch light non-aligned backlight.
When backlight 20 be along 10 thickness direction of display floater light collimated backlight when, as shown in figures 6a and 6c, when
When grandson's pixel transmittance rate is more than zero, its light for passing through is directed towards the transmitting of the phase place portion above which.In this case, control
Unit processed it is determined that during grandson's pixel in each sub-pixel, as long as phase place portion of the light of x-th grandson's pixel p x above which
After Rx, irradiant reverse extending line can converge at a picture point, and the target of the position of the picture point and the sub-pixel
Phase place correspondence, then, it is possible to using grandson's pixel p x as target grandson's pixel.As the direction of light is relevant with its phase place, and enter
Penetrate direction be it is certain, therefore, it is determined that during grandson's pixel, can be according to the phase adjusted amount of target phase and each phase-plate
It is determined that specific grandson's pixel.Control unit can also be using two in each sub-pixel grandson's pixel as target grandson's pixel, specifically
Method is similar with the determination process of target grandson's pixel, repeats no more here.
When backlight 20 is towards the luminous non-aligned backlight of different directions, described control unit is additionally operable to adjust grandson
The radiation direction passed through by pixel, so that the light passed through by each grandson's pixel can be with the different phase place portion of directive.It is this
In the case of, control unit it is determined that during grandson's pixel in each sub-pixel, if the light of x-th grandson's pixel p x is through y-th
After phase place portion Ry, irradiant reverse extending line can converge at a picture point, and the position of the picture point and the sub-pixel
Target phase correspondence, then, it is possible to using grandson's pixel p x as target grandson's pixel, and control its transmission light towards phase place
Portion Ry launches.Due to the direction of light it is relevant with its phase place, and each grandson's pixel towards each phase place portion transmitting light when, light
Direction can also be drawn according to the relative position relation of grandson's pixel and phase place portion, therefore, it is determined that during grandson's pixel, can basis
Position relationship between target phase, the phase adjusted amount in each phase place portion and each grandson's pixel and each phase place portion determines tool
Grandson's pixel of body.During using two grandson's pixels in sub-pixel as target grandson's pixel, concrete grammar and target grandson's pixel
Determination process is similar to, and repeats no more here.Compare with collimated backlight, during using non-aligned backlight, such as Fig. 6 b and Fig. 6 d institutes
Show, the light that each grandson's pixel is projected can be mapped to different phase place portions, therefore, control unit can be by more regulations
Scheme causes the light of sub-pixel p after phase layer 30, and the reverse extending line of light is converged at required picture point, control
Mode is more flexible.
Wherein, the direction of the light passed through by grandson's pixel can be adjusted by different modes, do not do concrete here
Limit.For example, backlight 20 includes multiple illuminating parts, and the illuminating part is corresponded with grandson's pixel, and illuminating part send out
Light direction is adjustable, by the light emission direction for adjusting the illuminating part, to adjust the direction of the incident ray of grandson's pixel, so as to adjust
The radiation direction passed through by grandson's pixel.
As described above, display floater 10 includes array base palte 11 and to box substrate 12, to being provided with coloured silk on box substrate 12
Film layer 13, the phase layer 30 in this utility model can be arranged on to box substrate 12 away from the side of array base palte 11, it is also possible to
It is arranged on between box substrate 12 and array base palte 11.Preferably, the phase layer 30 is arranged on on box substrate 12, and with
The color film layer 13 positioned at the same side to box substrate 12, to reduce phase layer 30 and color film layer 13 in a thickness direction as far as possible
Distance, so as to reduce colour cast.Specifically, phase layer 30 is positioned between box substrate 12 and color film layer 13.
As described above, each phase place portion includes multiple gratings, and the screen periods in same phase place portion are identical；It is same
In multiple described phase place portion corresponding to sub-pixel, the screen periods in out of phase portion are different, so that same sub-pixel institute
In corresponding multiple phase place portions, the phase adjusted amount in out of phase portion is different.Specifically, the grating quantity in each phase place portion is more than
Equal to 3, the grating can be the transmission gratings such as single-order grating, multistage grating.The height of grating can be in 200nm～30nm
Between, the height of the grating of different cycles can be with difference.There is diffraction, grating after multiple gratings in phase place portion in incident ray
M order diffraction ripples diffraction angle by screen periods P, the wavelength X of incidence wave and incidence angle θ0Determine, concrete formula is：
sinθ-sinθ0=m λ/P (m=0, ± 1, ± 2 ...)
And the angle of light is relevant with phase place, therefore, when backlight is collimated backlight, incidence angle θ0It is to determine
(i.e. initial phase is to determine), after the light direction of sub-pixel determines (after i.e. target phase determines), can be according to each
The screen periods in phase place portion determine target grandson's pixel.When the non-aligned backlight adjustable for light emission direction of backlight 20, that is, enter
Firing angle θ0Adjustable (i.e. initial phase is adjustable), after the light direction of sub-pixel determines (after i.e. target phase determines), can
To determine target grandson's pixel, and the radiation direction for being incident to target grandson's pixel according to the screen periods P in each phase place portion.
Generally, the diffracted intensity of the zero level and first-order diffraction of grating is larger, and the diffraction time of high-order compares front two
Person is much smaller；Zero-order diffractive ripple can be entered by the cycle of grating along incident light direction, the diffraction direction of first-order diffraction ripple
Row regulation and control, therefore when holographic display is carried out, what the regulation to light angle (in other words to light phase) was generally used is one
Order diffraction ripple (when light direction is equal to or during very close to incidence wave, it is also possible to using Zero-order diffractive ripple).And angle of incidence of light
When position difference of the fixed and color ripple on the grizzly bar and space of grating is half-wavelength odd-multiple, zero order wave is relevant to be weakened, fist-order wave
Strengthen；When position difference is wavelength integral multiple, zero order wave is relevant to be strengthened, and fist-order wave weakens.Therefore, in actual applications, in order to
Eliminate or weaken certain coloured light Zero-order diffractive ripple, the height of grating can be designed according to the wavelength.In addition, working as phase place portion
Grating 31a adopt multistage grating when, numbers of steps is more, and first-order diffraction efficiency is higher, and the light energy of concentration is more, therefore,
Phase place portion 31a can adopt the multistage grating of 4-8 ranks.
Planarization layer is provided between grating and color film layer 13, so that color film layer 13 is done on a flat surface, grating
Refractive index it is different from the refractive index of planarization layer, the difference of the two refractive index is preferably greater than 0.2, so that through phase layer 30
Light phase place occur significant change so that the direction of light changes.Grating specifically can be by transparent resin material
Material is made.
It is as another aspect of the present utility model, there is provided a kind of holographic display packing of above-mentioned holographic display, described
Holographic display packing includes：When any one width stereo-picture is shown,
The light to be passed through of each sub-pixel of the display floater is obtained according to the positional information of stereo-picture to be shown
The target phase of line, and according to the transmitted light for the treatment of of image information acquisition each sub-pixel of the stereo-picture to be shown
Target strength；
Determine in each sub-pixel with the target grandson's pixel corresponding to its target phase, and according to the target of each sub-pixel
The light transmittance of the target grandson's pixel in intensity adjustments each sub-pixels；
Control backlight provides reference light, the light-wave information of the reference light and the simulation of holographic recording to the display floater
Used in the process of reference light light-wave information it is identical so that at each sub-pixel of display floater pass through light reach
Respective target phase and target strength, according to the reversibility of light path, human eye can be appreciated that exist and the original in the position of the original
The stereo-picture of the image information all same of body.
The structure and image-forming principle of the holographic display is described above, is repeated no more here.Due to aobvious
Show that the light transmittance of each grandson's pixel of panel is adjustable, therefore, when holographic display is carried out, it is possible to use above-mentioned display method is continuous
Several different images are shown, such that it is able to realize Dynamic Announce.
As described above, the quantity of the target grandson's pixel in each sub-pixel is one or two, correspondingly, the determination
In each sub-pixel with the step of the target grandson's pixel corresponding to its target phase in, first kind of way is：Each described sub- picture
Grandson's pixel in element as the target grandson pixel, wherein, the light of target grandson's pixel is through sub-pixel correspondence
Multiple phase place portions in a phase place portion when, the reverse extending line of the light that the phase place portion projects is focused at and the sub-pixel
The corresponding position of target phase.Or, the second way is：Using it is two grandson's pixels in each described sub-pixel equal as
The target grandson pixel, wherein, the light of two target grandson's pixels is respectively through the corresponding multiple phase place portions of the sub-pixel
In two phase place portions when, the reverse extending line of the light that two phase place portions project assemble be the sub-pixel target phase
The corresponding position in position.
In addition, when the backlight is along the collimated backlight that display floater thickness direction lights, it is determined that per height picture
Include with the target grandson's pixel corresponding to its target phase in element：First by phase place phase adjusted amount corresponding with the target phase
Portion as target phase portion, then using grandson's pixel position corresponding with the position in the target phase portion as target grandson's pixel,
So that the light of the target grandson pixel is when the target grandson pixel corresponding phase place portion, the light that the phase place portion projects
Reverse extending line be focused at the position corresponding with the target phase of the sub-pixel.
When the backlight can launch light towards multiple different directions, determine in each sub-pixel with its target phase
Target grandson's pixel corresponding to position includes：The radiation direction passed through by grandson's pixel is adjusted, and is possible to towards phase adjusted
The luminous grandson's pixel in the phase place portion corresponding with the target phase of the sub-pixel is measured as the target grandson pixel, so that light
Line when the phase place portion that phase adjusted amount is corresponding with the target phase of the sub-pixel, the light that the phase place portion projects it is anti-
The position corresponding with the target phase of the sub-pixel is focused to extended line.Wherein, when backlight is collimated backlight, often
The quantity of the target grandson's pixel in individual sub-pixel can be one or two；When backlight is non-aligned backlight, per height picture
The quantity of the target grandson's pixel in element can also be one or two, and in the case of these, the concrete determination mode of grandson's pixel is upper
Text is described, and repeats no more here.
It is more than the description of holographic display that this utility model is provided and its holographic display packing, it can be seen that
As each sub-pixel includes the adjustable grandson's pixel of multiple light transmittances, multiple grandson's pixels of each sub-pixel correspond to phase place respectively
The mutually different multiple phase place portions of regulated quantity, therefore, (that is, a part is adjusted by adjusting the printing opacity position in each sub-pixel
Grandson's pixel transmittance, another part grandson's pixel are light tight), the irradiant phase place of each sub-pixel can be adjusted, also,
By the light transmittance for adjusting each grandson's pixel, the irradiant intensity of each sub-pixel can be adjusted.When showing a width
During stereo-picture, each sub-pixel target phase corresponding with stereo-picture to be shown and target strength are obtained, and by adjusting
That saves each sub-pixel goes out light phase and intensity, to reach corresponding target phase and target strength so that human eye see with
Original body position, color, the reproduced image of brightness all same.When different images are shown, only need to be according to each figure to be shown
As corresponding target phase and target strength are adjusted to the light transmittance of grandson's pixel, so as to reappear different standing
Body image, and then dynamic holographic display can be realized.
It is understood that embodiment of above be merely to illustrate that principle of the present utility model and adopt it is exemplary
Embodiment, but this utility model is not limited thereto.For those skilled in the art, without departing from this
In the case of the spirit and essence of utility model, various modifications and improvement can be made, these modifications and improvement are also considered as this reality
With new protection domain.
Claims (10)
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| CN201621048195.8U CN206057815U (en) | 2016-09-09 | 2016-09-09 | Holographic display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106154800A (en) * | 2016-09-09 | 2016-11-23 | 京东方科技集团股份有限公司 | Holographic display and holographic display packing thereof |
| CN106940486A (en) * | 2017-04-25 | 2017-07-11 | 京东方科技集团股份有限公司 | A kind of display device and its display methods |
| WO2018045816A1 (en) * | 2016-09-08 | 2018-03-15 | 京东方科技集团股份有限公司 | Holographic display device and display method thereof |
| CN109782430A (en) * | 2019-03-22 | 2019-05-21 | 京东方科技集团股份有限公司 | A kind of driving method of holographic display and holographic display |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018045816A1 (en) * | 2016-09-08 | 2018-03-15 | 京东方科技集团股份有限公司 | Holographic display device and display method thereof |
| CN106154800A (en) * | 2016-09-09 | 2016-11-23 | 京东方科技集团股份有限公司 | Holographic display and holographic display packing thereof |
| WO2018045840A1 (en) * | 2016-09-09 | 2018-03-15 | 京东方科技集团股份有限公司 | Holographic display device and holographic display method thereof |
| CN106154800B (en) * | 2016-09-09 | 2018-12-25 | 京东方科技集团股份有限公司 | Holographic display and its holographic display methods |
| US10948738B2 (en) | 2016-09-09 | 2021-03-16 | Boe Technology Group Co., Ltd. | Holographic display device and holographic display method |
| CN106940486A (en) * | 2017-04-25 | 2017-07-11 | 京东方科技集团股份有限公司 | A kind of display device and its display methods |
| US10795191B2 (en) | 2017-04-25 | 2020-10-06 | Boe Technology Group Co., Ltd. | Display device including optical element having adjustable refractive index and display method |
| CN109782430A (en) * | 2019-03-22 | 2019-05-21 | 京东方科技集团股份有限公司 | A kind of driving method of holographic display and holographic display |
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