CN203827465U - Three-in-one LED naked eye three-dimensional display apparatus based on sub-pixel - Google Patents

Abstract

A three-in-one LED naked eye three-dimensional display apparatus based on sub-pixels belongs to the display field. The apparatus comprises a three-in-one LED display screen and a raster. Three sub-pixels of 1R1G1B contained in each pixel of the LED display screen are arranged along a horizontal direction. The sub-pixels are in the same color in a vertical direction. A spacing P between sub pixels of the raster is equal to 1/3 of the distance between pixel dots of the three-in-one LED display screen and p0. Also provided is a raster constant d of the raster, namely the calculating formula of a raster period; and a spacing between the raster and a two-dimensional display screen, namely the calculating formula of a screen grid distance. The apparatus breaks the technical bottleneck of raster design based on a pixel grade for the three-in-one LED display screen, and effectively equalizes resolution loss of stereoscopic display resolution in the horizontal direction and the vertical direction, hence quality of the three-dimensional display image is increased.

Description

A kind of three-in-one LED bore hole 3D display unit based on sub-pixel

Technical field

The utility model relates to bore hole 3D and shows field, and the bore hole 3D that relates in particular to three-in-one LED shows.

Background technology

Bore hole 3D shows it is a kind of Display Technique that does not need auxiliary equipment (as wearing red indigo plant, polarization, shutter glasses or the liquid crystal helmet etc.), its background that is all widely used in fields such as Aero-Space, military affairs, medical science, advertisement design and entertainment interactives.

At present, the mainstream technology that bore hole 3D shows has two kinds: slit grating and column mirror grating.Slit grating is comprised of printing opacity and the gratings strips being in the light, by the effect of blocking to light, the space of realizing different points of view image is separated, and column mirror grating is to utilize cylindrical lens to interception of rays, light is deflected in space, thereby realize the effect similar to slit grating, these two kinds of modes all belong to the bore hole 3D Display Technique of spatial reuse.

But, these two kinds of raster pattern bore hole 3D Display Techniques of main flow are based on depending on LCD LCDs at present, ubiquity the problems such as resolution declines, brightness is on the low side, and LED display is because it has high brightness, low in calories, environmental protection, energy-efficient and steady performance, is applied to just gradually in bore hole 3D demonstration field.

Summary of the invention

As everyone knows, bore hole 3D display unit requires high especially to the sub-pixel structure of 2D display screen, a complete pixel is comprised of 1R1G1B tri-sub pixel lamps, sub-pixel arrangement mode and should meet following rule: by red, green, blue or indigo plant, green, red circulation, arrange in the horizontal direction; Be the same of the same colour of red, green, blue in vertical direction, each sub-pixel spacing in the horizontal and vertical directions all should keep equal.

But for common on the market three-in-one LED display screen kind, its sub-pixel structure is difficult to meet the above-mentioned requirements that bore hole 3D shows conventionally.Therefore, if want, adopt LED to shield as 2D display unit to improving stereo display brightness, Three kinds of hors d'oeuvres one LED display that can only adopt special sub-pixel structure to arrange, or employing three-in-one LED display screen, but design based on pixel scale, that is to say that, using tri-sub-pixels of 1R1G1B as an integral body, pel spacing is now the some distance of LED display.Because three-in-one LED bore hole 3D normally carries out grating design based on pixel scale, so this technology is than the Three kinds of hors d'oeuvres one LED screen of identical point distance, resolution will be subject to heavy losses, and stereo-picture sophistication also can reduce, and the granular sensation of image can increase the weight of.

The utility model proposes a kind ofly based on other three-in-one LED bore hole 3D display unit of sub-pixel-level, described three-in-one LED bore hole 3D display unit is comprised of three-in-one LED display screen and grating; The three-in-one LED display screen relating in the utility model should have following characteristics: pixel evenly arrange and level and vertical direction on point apart from equating, the 1R1G1B sub-pixel that each pixel comprises answers along continuous straight runs to arrange, as a rule, sub-pixel pitch between two in the horizontal direction inhomogeneous.In addition, sub-pixel in the vertical direction should be same color.

Grating is slit grating, or is column mirror grating.

Lower mask body divides two large divisions to introduce the utility model content:

One, grating parameter design

Because must know the spacing of relevant parameter, the especially sub-pixel of 2D display screen before grating design, and for three-in-one LED display screen, its sub-pixel pitch is also inhomogeneous.For this situation, the utility model proposes the desirable three-in-one LED display screen pixel of sub-pixel pitch p apart from p ₀1/3, so just can to slit grating or column mirror grating, carry out parameter designing according to existing grating design method.

Provide the specific design formula of grating major parameter below:

1. first, grating constant, the computing formula in grating cycle is as follows:

$d=\frac{\mathrm{Ksp}}{p+s}---\left(1\right)$

Wherein, K is viewpoint number, for the bore hole 3D display that has K viewpoint, the anaglyph information of K viewpoint need be synthesized to a width composograph and is presented on 2D display screen.The resolution of 2D display screen is fixed, and so, the resolution of single width anaglyph can only account for the 1/K of 2D display resolution, and corresponding 3D resolution also drops to the 1/K of 2D display resolution.Therefore it should be noted that and adopt many viewpoint technique can improve the stereos copic viewing degree of freedom, viewpoint number is more, the stereos copic viewing degree of freedom is larger, but makes 3D resolution loss more serious simultaneously, therefore, need choose reasonable viewpoint number, in the stereos copic viewing degree of freedom and three-dimensional resolution, average out between the two.Conventionally, the viewpoint number of bore hole 3D display is 8.

Here what deserves to be explained is, according to the grating of the utility model design, the three-in-one LED grating design method compared to based on pixel, can improve the horizontal resolution of stereo display, thereby the resolution loss on equilibrium level and vertical direction, improves stereo image quality.The resolution of supposing three-in-one LED display screen is that M * N(represents resolution with the pixel number of transverse and longitudinal direction here), so, if according to the grating design method based on pixel, the horizontal direction resolution of stereo display is M/K, vertical direction is N, and the total resolution of namely stereo display is reduced to the 1/K of 2D display screen.And the method for designing based on sub-pixel of utilizing the utility model to relate to, the horizontal resolution of stereo display is only reduced to 3 * M/K, and vertical direction resolution is reduced to N/3, and total stereo display resolution is also the 1/K of 2D display screen.Therefore can draw, the grating of the utility model design can the three-dimensional resolution of efficient balance in the loss of level and vertical direction, thereby improve stereo display quality.

S in formula (1) is adjacent viewpoint spacing, by viewpoint compound mode, is determined, take 8 viewpoints here as example, and compound mode can be 1-4,2-5,3-6,4-7,5-8 or 1-2,2-3, other combinations such as 3-4....In order to allow right and left eyes receive respectively two anaglyph information of every a pair of viewpoint combination, must make every a pair of viewpoint be combined in and watch the spacing of plane and the interpupillary distance e of human eye to equate, adjacent viewpoint spacing is

$s=\frac{e}{\mathrm{\ΔK}}---\left(2\right)$

Wherein, △ K is the vision area number comprising between every a pair of viewpoint combination, and eyes interpupillary distance is got e=65mm conventionally.

2. the spacing of grating and 2D display screen, screen apart from the computing formula of l is:

$l=\frac{\mathrm{Hp}}{p+s}---\left(3\right)$

Wherein, H is viewing distance, and namely beholder is apart from the distance of 2D display screen.

Two, anaglyph composition algorithm

In three-in-one LED bore hole 3D display unit, except needing appropriate design grating, the particularly important is in addition stereoscopic image, according to the sub-pixel physical structure of 2D display screen, to carry out anaglyph synthetic, the utility model has provided the stereo-picture synthetic method of three-in-one LED bore hole 3D, comprises the steps:

1. according to the product specification book of three-in-one LED display screen, obtain the point of pixel apart from p ₀, the spacing between pixel and pixel namely, the point of the LED display relating to is here apart from equating in the horizontal direction with on vertical direction.In addition, by consulting product specification book, obtain the adjacent spacing of sub-pixel in single pixel, be made as Δ x.

2. according to the residing physical location of different subpixel, calculate its corresponding viewpoint number.All sub-pixels on 2D display screen being divided into three kinds of situations below discusses:

1) for from left side number k ₁row sub-pixel, wherein k ₁=3 * n+1, (n=0,1,2...), the computing formula that its corresponding viewpoint is counted Q is:

$Q(k_l,l)=\frac{(k_1+k_{\mathrm{off}}-l\tan \mathrm{\α})\mathrm{mod}X}{X}K---\left(4\right)$

Wherein, l is the residing row-coordinate of sub-pixel, k _offthe horizontal displacement that represents 2D display screen left edge and raster unit marginal point, α be grating axle with respect to the slanted angle of LCD display vertical axis, X is the number that a grating cycle covers in the horizontal direction RGB sub-pixel, mod is that remainder operates.

2) for from left side number k ₂row sub-pixel, wherein k ₂=3 * n+2, (n=0,1,2...), the computing formula that its corresponding viewpoint is counted Q is:

$Q(k_2,l)=\frac{[k_2-\frac{(p-\mathrm{\Δx})}{p}+k_{\mathrm{off}}-l\tan \mathrm{\α}]\mathrm{mod}X}{X}K---\left(5\right)$

Wherein, p=p ₀/ 3.

3) for from left side number k ₃row sub-pixel, wherein k ₃=3 * n+3, (n=0,1,2...), the computing formula that its corresponding viewpoint is counted Q is:

$Q(k_2,l)=\frac{[k_3-\frac{2(p-\mathrm{\Δx})}{p}+k_{\mathrm{off}}-l\tan \mathrm{\α}]\mathrm{mod}X}{X}K---\left(6\right)$

Like this, just obtained the corresponding viewpoint matrix number Q of all sub-pixels on 2D display screen.It should be noted that the numerical value in the matrix Q here should keep non-whole property, can not carry out four provinces five to it and enter to round.

3. according to weighted sum thought, the gray value of all sub-pixels on synthetic images carries out assignment, gets the linear weighted function summing value of adjacent two viewpoints.According to non-integer viewpoint obtained in the previous step, count Q matrix, utilize weighted sum thought, the gray value of interested RGB sub-pixel is calculated.Parallax in bore hole 3D shows in major concern horizontal direction changes, so the weighted sum process relating in the utility model is only carried out in the horizontal direction.So, the gray value of the sub-pixel on 2D display screen has following formula:

R(k,l)=I(k,l,i)×ξ _i+I(k,l,i+1)×ξ _i+1 （7）

Wherein, R is that in composograph, coordinate position is the sub-pixel gray value of (k, l), I be certain width anaglyph at the gray value of relevant position, the weight coefficient that ξ is respective viewpoints, and have following relation establishment:

$\left\{\begin{array}{c}i=\mathrm{floor}\left(Q\right)\\ {\mathrm{\ξ}}_i=i+1-Q\\ {\mathrm{\ξ}}_{i+1}=Q-i\end{array}\right.---\left(8\right)$

Wherein, floor rounds under representing.For the ease of understanding, illustrate below, if calculate the corresponding viewpoint of certain sub-pixel, count Q=6.4, so, gray value that can this sub-pixel according to formula (8) should be:

Gray value * 0.4 (9) of the 7th viewpoint of gray value * 0.6+ of gray value=6th viewpoint

The beneficial effects of the utility model:

When the utility model has solved three-in-one LED display screen and shows for bore hole 3D, can only carry out based on pixel scale the technical bottleneck of grating design.The apparatus and method that provide by the utility model can efficient balance stereo display resolution resolution loss in the horizontal and vertical directions, improve the quality of stereoscopically displaying images, increase image sophistication and stereos copic viewing comfort level, main contribution is to have improved common on the market three-in-one LED display screen for bore hole 3D, to show the possibility in field in addition.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is described further.

Fig. 1 is the three-in-one LED display system architectures schematic diagram that the utility model relates to.

Fig. 2 is the bore hole 3D display unit schematic diagram that the utility model relates to.

Fig. 3 is the viewpoint sub-pixel mapping matrix specific embodiment that the utility model calculates.

Fig. 4 is the synthetic anaglyph specific embodiment of the utility model.

Embodiment

Fig. 1 is the structural representation of three-in-one LED display screen, and wherein, 1 is that point is apart from p ₀, 2 is the adjacent subpixels separation delta x in single pixel, and 3 is whole pixel, and 4 is sub-pixel.

Fig. 2 be the utility model relate to based on other three-in-one LED bore hole 3D display unit schematic diagram of sub-pixel-level, given here is device vertical view.Wherein, the 5 sub-pixel pitch p that are three-in-one LED, 6 is three-in-one LED display screen, and 7 is slit grating, and 8 is the grating constant of slit grating 7, and 9 is the distance of slit grating 7 distance L ED display screens 6,10 is viewing distance.What deserves to be explained is, the grating relating in the utility model is not only confined to slit grating, is equally applicable to column mirror grating, is only here to take slit grating to carry out device explanation as example.

Fig. 3 has provided as α=arctan (0.215), K=8, and X=8, point is apart from p ₀=1.98mm, during sub-pixel pitch Δ x=0.3mm in single pixel, the viewpoint sub-pixel mapping matrix obtaining according to the method relating in the utility model, Fig. 3 has only provided the value of sub-fraction sub-pixel.

Viewpoint sub-pixel mapping matrix Q according to trying to achieve in Fig. 3, in conjunction with the weighted sum method to adjacent viewpoint gray value, calculates the composograph of 8 width anaglyphs, as shown in Figure 4.Finally, as long as the composograph obtaining in Fig. 4 is input in the three-in-one LED display system in Fig. 2, beholder just can see stereo-picture at rational viewing distance place.

The foregoing is only the preferred embodiment that the utility model is created; in order to limit the utility model, do not create; any modification of doing within all spirit of creating at the utility model and principle, be equal to and replace and improvement etc., within all should being included in the protection range that the utility model creates.

Claims (2)

1. based on other three-in-one LED bore hole 3D display unit of sub-pixel-level, described three-in-one LED bore hole 3D display unit is comprised of three-in-one LED display screen and grating; It is characterized in that: three-in-one LED display screen pixel evenly arrange and level and vertical direction on point apart from equating, tri-sub-pixels of 1R1G1B that each pixel comprises answer along continuous straight runs to arrange; Sub-pixel in the vertical direction is same color.

2. as claimed in claim 1 a kind of based on other three-in-one LED bore hole 3D display unit of sub-pixel-level, it is characterized in that: grating is slit grating, or be column mirror grating; Grating sub-pixel pitch p equals three-in-one LED display screen pixel apart from p ₀1/3.