CN102692721A - 2D/3D (two-dimensional/three-dimensional) switchable autostereoscopic display device and method - Google Patents

Abstract

The invention discloses a 2D/3D (two-dimensional/three-dimensional) switchable autostereoscopic display device and a 2D/3D (two-dimensional/three-dimensional) switchable autostereoscopic display method. The autostereoscopic display device comprises a light guide plate, a first light source, a second light source and a reflector plate, wherein the light guide plate is arranged between the reflector plate and a liquid crystal display screen; the first surface of the light guide plate is opposite to the liquid crystal display screen; the second surface of the light guide plate is opposite to the reflector plate; the first light source and the second light source are arranged on the lateral wall of the light guide plate; a plurality of fluorescent powder coating areas are arranged on the first surface; the fluorescent powder coating areas are periodically distributed in a strip manner; and the light emitted from the first light source displays a 2D image, and the fluorescent powder coating areas is stimulated for lighting by the light emitted by the second light source so as to display a 3D image. The autostereoscopic display device disclosed by the invention has the advantages of simple structure and better display effect of the 2D and 3D images, and can conveniently and fast switch between 2D/3D two display modes.

Description

2D/3D switchable autostereoscopic display apparatus and method

Technical field

The present invention relates to the automatic stereo display technique, relate in particular to a kind of 2D/3D suitching type auto-stereoscopic display device and method thereof.

Background technology

Stereo display is one type main in the 3-D display, and it is the degree of depth sensitivity that the utilization parallax is realized human eye.Stereo display can be divided into the stereo display that need wear the auxiliary eyeglasses device again and need not to wear the automatic stereo demonstration of any auxiliary eyeglasses device.The automatic stereo display technique can be used for military affairs, medical treatment, data visualization, engineering, amusement, virtual business trade and education, becomes a focus of display technique area research on the our times.

Thereby the parallax projective technique is separated the right and left eyes image through controlling the image that is presented on the liquid crystal display from the light of LGP outgoing.Wherein, the parallax grenade instrumentation can be attached the rear side at LCD (LCD).When using this rear-mounted parallax grenade instrumentation; Get into LCD from the light of LGP (LGP) via the scattering pattern projection of particular design; So that the light that LGP sends angle of outgoing from LGP is controlled; Light can be outputed on the LCD panel each preset position like this, i.e. light respectively in the sub-pixel of respective user left eye and the right eye of incident LCD, thus 3D effect can be provided.

It is thus clear that the parallax projective technique forms 3D effect through the angle and direction of control emergent light, yet, when using the parallax projective technique, can't show the 2D image.The content of considering present 3D rendering does not also reach the profuse stage, so for the 3D display, requirement can show that 3D rendering also can show the 2D image.

Therefore, those skilled in the art is devoted to develop a kind of 2D/3D suitching type auto-stereoscopic display device and method thereof, independently switches, optionally shows 2D image and 3D rendering when using the parallax projective technique to be implemented in.

Summary of the invention

Because the above-mentioned defective of prior art, technical matters to be solved by this invention provides a kind of 2D/3D suitching type auto-stereoscopic display device and method thereof, comes optionally to show 2D image and 3D rendering through two kinds of light sources are set.

For realizing above-mentioned purpose, the invention provides a kind of 2D/3D suitching type auto-stereoscopic display device, it is characterized in that, comprise LGP, first light source, secondary light source and reflecting plate; Said LGP is arranged between said reflecting plate and the LCDs, and the first surface of said LGP is over against said LCDs, and the second surface of said LGP is over against said reflecting plate; Said first light source and said secondary light source are arranged on the sidewall of said LGP; Have a plurality of fluorescent powder coating areas on the said first surface, said a plurality of fluorescent powder coating areas are periodically zonal arrangement; The light that said first light source sends shows the 2D image, and the light that said secondary light source sends makes said fluorescent powder coating area stimulated luminescence to show 3D rendering.

Further, the parameter of said zonal arrangement is:

$W_w=\frac{{\mathrm{QW}}_p}{Q-W_p},$ $W=\frac{{\mathrm{KQW}}_p}{Q-W_p},$ $D=\frac{{\mathrm{LW}}_p}{Q-W_p},$

The width of wherein said fluorescent powder coating area is W _w, the distance between two adjacent said fluorescent powder coating areas is W, W _pBe the width of the pixel of said LCDs, K is the number of viewpoint, and Q is the spacing of two adjacent said viewpoints, and L is the distance of said LCDs to said viewpoint, and D is the distance of the said first surface of said LGP to said LCDs.

Further, said first light source is light emitting diode, cold-cathode tube or Organic Light Emitting Diode.

Further, said secondary light source is a ultraviolet source.

Further, the said first surface of said LGP is the plane, and said fluorescent powder coating area is on said plane.

Further, the said first surface of said LGP has groove, and said fluorescent powder coating area is in said groove.

Further, said first light source is arranged on the sidewall of said LGP, and said secondary light source is arranged on another sidewall of said LGP, and said two sidewalls against each other.

Further, said first light source and said secondary light source are distributed on the sidewall of said LGP interlacedly.

Further, have on the said second surface of said LGP scattering pattern with scattering from the light of said first light source with from the light of said secondary light source, said scattering pattern is printing ink site or three-dimensional microstructures.

Further; The present invention also provides a kind of 2D/3D suitching type automatic stereo display packing; It is characterized in that; LGP is arranged between LCDs and the reflecting plate, and said first light source and said secondary light source are arranged on the sidewall of said LGP, and said LGP faces on the first surface of said LCDs has a plurality of fluorescent powder coating areas; Said a plurality of fluorescent powder coating area is periodically zonal arrangement, and the parameter of said zonal arrangement is:

$W_w=\frac{{\mathrm{QW}}_p}{Q-W_p},$ $W=\frac{{\mathrm{KQW}}_p}{Q-W_p},$ $D=\frac{{\mathrm{LW}}_p}{Q-W_p},$

The width of wherein said fluorescent powder coating area is W _w, the distance between two adjacent said fluorescent powder coating areas is W, W _pBe the width of the pixel of said LCDs, K is the number of viewpoint, and Q is the spacing of two adjacent said viewpoints, and L is the distance of said LCDs to said viewpoint, and D is the distance of the said first surface of said LGP to said LCDs; The light that said first light source sends shows the 2D image, and the light that said secondary light source sends makes said fluorescent powder coating area stimulated luminescence to show 3D rendering.

As shown in Figure 1, a plurality of fluorescent powder coating areas on the LGP 1 face at LGP 1 and are periodically zonal arrangement on the first surface of LCDs 2.The width of fluorescent powder coating area is W _w, the width in gap is W between two adjacent fluorescent powder coating areas _b, the distance W=W between two therefore adjacent fluorescent powder coating areas _w+ W _bThe light that sends after the fluorescent powder coating area is excited projects LCDs 2.Have a plurality of pixels that are arranged in order on the LCDs 2, W _pWidth for pixel.The first surface of LGP 1 is D to the distance of LCDs 2.If have K viewpoint in this 3D automatic stereo display model, LCDs 2 is L to the distance of viewpoint.The light that sends after each fluorescent powder coating area is excited all arrives this K viewpoint through adjacent K pixel on the LCDs 2.For example, shown four viewpoints among Fig. 1, i.e. viewpoint 3-6 all arrives viewpoint 3-6 through four adjacent pixels from the light of each fluorescent powder coating area.Like this, the proportionate relationship of the length of side through similar triangles can obtain:

$\frac{W_p}{W_w}=\frac{L}{L+D},---\left(1\right)$

$\frac{{\mathrm{KW}}_p}{W}=\frac{L}{L+D},---\left(2\right)$

$\frac{W_p}{Q}=\frac{D}{L+D}.---\left(3\right)$

Through type (1)-(3) can obtain realizing the parameter of the zonal arrangement of the secondary light source on the LGP 1 that the 3D automatic stereo shows:

$W_w=\frac{{\mathrm{QW}}_p}{Q-W_p},---\left(4\right)$

$W=\frac{{\mathrm{KQW}}_p}{Q-W_p},---\left(5\right)$

$D=\frac{{\mathrm{LW}}_p}{Q-W_p}.---\left(6\right)$

In preferred embodiments of the present invention, 2D/3D suitching type auto-stereoscopic display device of the present invention comprises LGP, first light source, secondary light source and reflecting plate.LGP is arranged between reflecting plate and the LCDs, and the first surface of LGP is over against LCDs, and the second surface of LGP is over against reflecting plate.First light source and secondary light source are separately positioned on two relative sidewalls of LGP.Have a plurality of periodically fluorescent powder coating areas of zonal arrangement that are on the first surface of LGP.During use, open first light source, close secondary light source simultaneously, 2D/3D suitching type auto-stereoscopic display device then of the present invention is operated under the 2D pattern; Open secondary light source, close first light source simultaneously, 2D/3D suitching type auto-stereoscopic display device then of the present invention is operated under the 3D pattern.

This shows that 2D/3D suitching type auto-stereoscopic display device of the present invention and method thereof cooperate LGP through using two kinds of light sources, have realized optionally showing 2D image and 3D rendering.The present invention is simple in structure, can between two kinds of display modes of 2D/3D, switch quickly and easily, and the 2D that the present invention shows and the effect of 3D rendering is better.

Below will combine accompanying drawing that the technique effect of design of the present invention, concrete structure and generation is described further, to understand the object of the invention, characteristic and effect fully.

Description of drawings

Fig. 1 is the synoptic diagram that has shown the 3D automatic stereo display model of 3D light-dividing principle.

Fig. 2 is the synoptic diagram that 2D/3D suitching type auto-stereoscopic display device of the present invention is worked under the 2D pattern.

Fig. 3 is the synoptic diagram that 2D/3D suitching type auto-stereoscopic display device of the present invention is worked under the 3D pattern.

Embodiment

Shown in Fig. 2 and 3,2D/3D suitching type auto-stereoscopic display device of the present invention comprises LGP 10, first light source 40, secondary light source 50 and reflecting plate 30.LGP 10 is arranged between reflecting plate 30 and the LCDs 20, and the first surface of LGP 10 is over against LCDs 20, and the second surface of LGP 10 is over against reflecting plate 30.Have a plurality of fluorescent powder coating areas on the first surface of LGP 10, like fluorescent powder coating area 11, these fluorescent powder coating areas are periodically zonal arrangement.

First light source 40 is arranged on the sidewall of LGP 10, and secondary light source 50 is arranged on another sidewall of LGP 10, and two sidewalls against each other.First light source 40 can be white light sources such as light emitting diode, cold-cathode tube or Organic Light Emitting Diode, and secondary light source 50 can be a ultraviolet source, also can be other the light source that can make fluorescent powder coating area stimulated luminescence.With fluorescent powder coating area 11 is example, and fluorescent powder coating area 11 will be excited and send white light after being shone by secondary light source 50, and this excites the light that sends to project then on the LCDs 20.For among its embodiment, a plurality of light emitting diodes of first light source 40 and a plurality of ultraviolet sources of secondary light source 50 are distributed on the sidewall of LGP 10 interlacedly.

In the present embodiment, the first surface of LGP 10 has groove, and each fluorescent powder coating area is embedded in the groove.In other embodiment, the first surface of LGP 10 can be the plane, and each fluorescent powder coating area distributes in the plane.Relational expression (4)-(6) are satisfied in the periodicity zonal arrangement of each fluorescent powder coating area, wherein, and W _wWidth for the fluorescent powder coating area; W is the distance between adjacent two fluorescent powder coating areas; W _pWidth for the pixel of LCDs 20; K is the number of the viewpoint that provides of 2D/3D suitching type auto-stereoscopic display device of the present invention; Q is the spacing of adjacent two viewpoints; L is the distance of LCDs 20 to viewpoint; D is the distance of the first surface of LGP 10 to LCDs 20.

Scattering pattern 12 is arranged with the light of scattering from first light source 40 and secondary light source 50 on the second surface of LGP 10, scattering pattern 12 is printing ink site or three-dimensional microstructures, like the printing ink pattern of net-point printing or the lenticule pattern of laser making.The shape of scattering pattern 12 can be that circle, ellipse, square, triangle or the like are not limited to fixed pattern, can also be other the d pattern that can improve its optical property.

Reflecting plate 30 is used for reflecting the light that penetrates from the LGP bottom and making it come back to LGP, thereby improves capacity usage ratio.

As shown in Figure 2, when 2D/3D suitching type auto-stereoscopic display device of the present invention is worked, open first light source 40 under the 2D pattern, close secondary light source 50 simultaneously.The light that first light source 40 sends is coupled into LGP 10, and the scattering pattern 12 on the second surface of LGP 10 makes the light scattering and the mixing of these entering, thereby makes the light that sends from the first surface of LGP 10 even.Because the energy shortage of the light that sends of first light source 40 is with the excitated fluorescent powder coating area, so the field pattern and the angle of fluorescent powder coating area light that the first surface from LGP 10 is sent are little.Like this, this moment, the bright dipping mode of 2D/3D suitching type auto-stereoscopic display device of the present invention was consistent with common LCDs, can show the 2D image.

As shown in Figure 3, when 2D/3D suitching type auto-stereoscopic display device of the present invention is worked, open secondary light source 50 under the 3D pattern, close first light source 40 simultaneously.Secondary light source sends ultraviolet light, and ultraviolet light is coupled among the LGP 10, and by 12 scatterings of the scattering pattern on the second surface of LGP 10 and mixing.Because the energy of the light that sends of secondary light source 50 is enough to the excitated fluorescent powder coating area, so the fluorescent powder coating area sends white light after being excited, and projection is to LCDs 20.Because the model that the light path of this moment and structural parameters meet foregoing 3D light-dividing principle; Thereby respectively the different subpixel of incident LCDs 20 corresponding left eyes and right eye, make the people when watching, can aware the effect of 3D from the light of each fluorescent powder coating area outgoing.

More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can design according to the present invention make many modifications and variation.Therefore, the technician in all present technique field all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (10)

1. a 2D/3D suitching type auto-stereoscopic display device is characterized in that, comprises LGP, first light source, secondary light source and reflecting plate; Said LGP is arranged between said reflecting plate and the LCDs, and the first surface of said LGP is over against said LCDs, and the second surface of said LGP is over against said reflecting plate; Said first light source and said secondary light source are arranged on the sidewall of said LGP; Have a plurality of fluorescent powder coating areas on the said first surface, said a plurality of fluorescent powder coating areas are periodically zonal arrangement; The light that said first light source sends shows the 2D image, and the light that said secondary light source sends makes said fluorescent powder coating area stimulated luminescence to show 3D rendering.

2. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 1, the parameter of wherein said zonal arrangement is:

$W_w=\frac{{\mathrm{QW}}_p}{Q-W_p},$ $W=\frac{{\mathrm{KQW}}_p}{Q-W_p},$ $D=\frac{{\mathrm{LW}}_p}{Q-W_p},$

The width of wherein said fluorescent powder coating area is W _w, the distance between two adjacent said fluorescent powder coating areas is W, W _pBe the width of the pixel of said LCDs, K is the number of viewpoint, and Q is the spacing of two adjacent said viewpoints, and L is the distance of said LCDs to said viewpoint, and D is the distance of the said first surface of said LGP to said LCDs.

3. according to claim 1 or claim 2 2D/3D suitching type auto-stereoscopic display device, wherein said first light source is light emitting diode, cold-cathode tube or Organic Light Emitting Diode.

4. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 3, wherein said secondary light source is a ultraviolet source.

5. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 4, the said first surface of wherein said LGP is the plane, said fluorescent powder coating area is on said plane.

6. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 4, the said first surface of wherein said LGP has groove, and said fluorescent powder coating area is in said groove.

7. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 4, wherein said first light source are arranged on the sidewall of said LGP, and said secondary light source is arranged on another sidewall of said LGP, and said two sidewalls against each other.

8. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 4, wherein said first light source and said secondary light source are distributed on the sidewall of said LGP interlacedly.

9. according to claim 1 or claim 2 2D/3D suitching type auto-stereoscopic display device; Have on the said second surface of wherein said LGP scattering pattern with scattering from the light of said first light source with from the light of said secondary light source, said scattering pattern is printing ink site or three-dimensional microstructures.

10. 2D/3D suitching type automatic stereo display packing; It is characterized in that; LGP is arranged between LCDs and the reflecting plate; Said first light source and said secondary light source are arranged on the sidewall of said LGP, and said LGP faces on the first surface of said LCDs has a plurality of fluorescent powder coating areas; Said a plurality of fluorescent powder coating area is periodically zonal arrangement, and the parameter of said zonal arrangement is:

$W_w=\frac{{\mathrm{QW}}_p}{Q-W_p},$ $W=\frac{{\mathrm{KQW}}_p}{Q-W_p},$ $D=\frac{{\mathrm{LW}}_p}{Q-W_p},$

The width of wherein said fluorescent powder coating area is W _w, the distance between two adjacent said fluorescent powder coating areas is W, W _pBe the width of the pixel of said LCDs, K is the number of viewpoint, and Q is the spacing of two adjacent said viewpoints, and L is the distance of said LCDs to said viewpoint, and D is the distance of the said first surface of said LGP to said LCDs; The light that said first light source sends shows the 2D image, and the light that said secondary light source sends makes said fluorescent powder coating area stimulated luminescence to show 3D rendering.

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