CN102692721B - 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 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 a class main in 3-D display, and it is to use parallax to realize the degree of depth sensitivity of human eye.Stereo display can be divided into again need to wear the stereo display of auxiliary eyeglasses device and show without the automatic stereo of wearing any auxiliary eyeglasses device.Automatic stereo display technique can be for military affairs, medical treatment, data visualization, engineering, amusement, virtual business trade and education, becomes a focus of display technique area research on our times.

Thereby parallax projective technique separates right and left eyes image by controlling the image being shown in liquid crystal display from the light display of light guide plate outgoing.Wherein, parallax grenade instrumentation can be attached to the rear side of liquid crystal display (LCD).While using this rear-mounted parallax grenade instrumentation, light from light guide plate (LGP) enters LCD via the scattering pattern projection of particular design, so that the light that light guide plate is sent angle of outgoing from light guide plate is controlled, light can be output to each default position on LCD panel like this, be in the respective user left eye of light difference incident LCD and the sub-pixel of right eye, thereby 3D effect can be provided.

Visible, parallax projective technique forms 3D effect by the angle and direction of controlling emergent light, but, in the time using parallax projective technique, cannot show 2D image.The content of considering current 3D rendering does not also reach the very abundant stage, so for 3D display, requirement can show that 3D rendering also can show 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 to realize in the time using parallax projective technique.

Summary of the invention

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

For achieving the above object, the invention provides a kind of 2D/3D suitching type auto-stereoscopic display device, it is characterized in that, comprise light guide plate, the first light source, secondary light source and reflecting plate; Described light guide plate is arranged between described reflecting plate and LCDs, and the first surface of described light guide plate is just to described LCDs, and the second surface of described light guide plate is just to described reflecting plate; Described the first light source and described secondary light source are arranged on the sidewall of described light guide plate; On described first surface, have multiple fluorescent powder coating area, described multiple fluorescent powder coating area is periodically zonal arrangement; The light display that described the first light source sends is shown 2D image, and the light that described secondary light source sends makes described fluorescent powder coating area stimulated luminescence to show 3D rendering.

Further, the parameter of described 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 described fluorescent powder coating areas is W, W _pfor the width of the pixel of described LCDs, the number that K is viewpoint, Q is the spacing of two adjacent described viewpoints, and L is the distance of described LCDs to described viewpoint, and the described first surface that D is described light guide plate is to the distance of described LCDs.

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

Further, described secondary light source is ultraviolet source.

Further, the described first surface of described light guide plate is plane, and described fluorescent powder coating area is in described plane.

Further, the described first surface of described light guide plate has groove, and described fluorescent powder coating area is in described groove.

Further, described the first light source is arranged on a sidewall of described light guide plate, and described secondary light source is arranged on another sidewall of described light guide plate, and described two sidewalls toward each other.

Further, described the first light source and described secondary light source are distributed on the sidewall of described light guide plate interlacedly.

Further, on the described second surface of described light guide plate, have scattering pattern with scattering from the light of described the first light source with from the light of described secondary light source, described scattering pattern is 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, light guide plate is arranged between LCDs and reflecting plate, described the first light source and described secondary light source are arranged on the sidewall of described light guide plate, and described light guide plate faces on the first surface of described LCDs has multiple fluorescent powder coating area; Described multiple fluorescent powder coating area is periodically zonal arrangement, and the parameter of described 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 described fluorescent powder coating areas is W, W _pfor the width of the pixel of described LCDs, the number that K is viewpoint, Q is the spacing of two adjacent described viewpoints, and L is the distance of described LCDs to described viewpoint, and the described first surface that D is described light guide plate is to the distance of described LCDs; The light display that described the first light source sends is shown 2D image, and the light that described secondary light source sends makes described fluorescent powder coating area stimulated luminescence to show 3D rendering.

As shown in Figure 1, the multiple fluorescent powder coating area in light guide plate 1 faces in light guide plate 1 and on the first surface of LCDs 2, is periodically zonal arrangement.The width of fluorescent powder coating area is W _w, between two adjacent fluorescent powder coating areas, the width in gap is W _b, the therefore distance W=W between two adjacent fluorescent powder coating areas _w+ W _b.The light sending after fluorescent powder coating area is excited projects LCDs 2.In LCDs 2, there are multiple pixels that are arranged in order, W _pfor the width of pixel.The first surface of light guide plate 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 sending after each fluorescent powder coating area is excited all arrives this K viewpoint through adjacent K pixel in LCDs 2.For example, shown four viewpoints in 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 by 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 in the light guide plate 1 that 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 light guide plate, the first light source, secondary light source and reflecting plate.Light guide plate is arranged between reflecting plate and LCDs, and the first surface of light guide plate is just to LCDs, and the second surface of light guide plate is just to reflecting plate.The first light source is separately positioned on two relative sidewalls of light guide plate with secondary light source.On the first surface of light guide plate, there are multiple periodically fluorescent powder coating areas of zonal arrangement that are.When use, open the first light source, close secondary light source simultaneously, 2D/3D suitching type auto-stereoscopic display device of the present invention is operated under 2D pattern; Open secondary light source, close the first light source simultaneously, 2D/3D suitching type auto-stereoscopic display device of the present invention is operated under 3D pattern.

As can be seen here, 2D/3D suitching type auto-stereoscopic display device of the present invention and method thereof, by coordinating light guide plate with two kinds of light sources, have realized and have optionally shown 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 with reference to accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is described further, to understand fully object of the present invention, feature and effect.

Brief description of the drawings

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

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

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

Embodiment

As shown in Figures 2 and 3,2D/3D suitching type auto-stereoscopic display device of the present invention comprises light guide plate 10, the first light source 40, secondary light source 50 and reflecting plate 30.Light guide plate 10 is arranged between reflecting plate 30 and LCDs 20, and the first surface of light guide plate 10 is just to LCDs 20, and the second surface of light guide plate 10 is just to reflecting plate 30.On the first surface of light guide plate 10, have multiple fluorescent powder coating area, as fluorescent powder coating area 11, these fluorescent powder coating areas are periodically zonal arrangement.

The first light source 40 is arranged on a sidewall of light guide plate 10, and secondary light source 50 is arranged on another sidewall of light guide plate 10, and two sidewalls toward each other.The first light source 40 can be the white light sources such as light emitting diode, cold-cathode tube or Organic Light Emitting Diode, and secondary light source 50 can be ultraviolet source, can be also other the light source that can make fluorescent powder coating area stimulated luminescence.Taking fluorescent powder coating area 11 as example, fluorescent powder coating area 11 will be excited and send white light after being irradiated by secondary light source 50, and this excites the light sending then to project in LCDs 20.For in its embodiment, can also make multiple light emitting diodes of the first light source 40 and multiple ultraviolet sources of secondary light source 50 be distributed on the sidewall of light guide plate 10 interlacedly.

In the present embodiment, the first surface of light guide plate 10 has groove, and each fluorescent powder coating area is embedded in groove.In other embodiments, the first surface of light guide plate 10 can be plane, and each fluorescent powder coating area distributes in the plane.The periodicity zonal arrangement of each fluorescent powder coating area meets relational expression (4)-(6), wherein, and W _wfor the width of fluorescent powder coating area; W is the distance between adjacent two fluorescent powder coating areas; W _pfor the width of the pixel of LCDs 20; The number of the viewpoint that K provides for 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 that the first surface of light guide plate 10 is to the distance of LCDs 20.

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

Reflecting plate 30 is for reflecting the light penetrating from light guide plate bottom and making it come back to light guide plate, thus raising capacity usage ratio.

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

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

More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just can design according to the present invention make many modifications and variations without creative work.Therefore, all those skilled in the art, all should be in by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (9)

1. a 2D/3D suitching type auto-stereoscopic display device, is characterized in that, comprises light guide plate, the first light source, secondary light source and reflecting plate; Described light guide plate is arranged between described reflecting plate and LCDs, and the first surface of described light guide plate is just to described LCDs, and the second surface of described light guide plate is just to described reflecting plate; Described the first light source and described secondary light source are arranged on the sidewall of described light guide plate; On described first surface, have multiple fluorescent powder coating area, described multiple fluorescent powder coating area is periodically zonal arrangement; The light display that described the first light source sends is shown 2D image, and the light that described secondary light source sends makes described fluorescent powder coating area stimulated luminescence to show 3D rendering, and the parameter of described 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 described fluorescent powder coating areas is W, W _pfor the width of the pixel of described LCDs, the number that K is viewpoint, Q is the spacing of two adjacent described viewpoints, and L is the distance of described LCDs to described viewpoint, and the described first surface that D is described light guide plate is to the distance of described LCDs.

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

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

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

5. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 3, the described first surface of wherein said light guide plate has groove, and described fluorescent powder coating area is in described groove.

6. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 3, wherein said the first light source is arranged on a sidewall of described light guide plate, and described secondary light source is arranged on another sidewall of described light guide plate, and described two sidewalls are toward each other.

7. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 3, wherein said the first light source and described secondary light source are distributed on the sidewall of described light guide plate interlacedly.

8. 2D/3D suitching type auto-stereoscopic display device as claimed in claim 1, on the described second surface of wherein said light guide plate, have scattering pattern with scattering from the light of described the first light source with from the light of described secondary light source, described scattering pattern is ink site or three-dimensional microstructures.

9. a 2D/3D suitching type automatic stereo display packing, it is characterized in that, light guide plate is arranged between LCDs and reflecting plate, the first light source and secondary light source are arranged on the sidewall of described light guide plate, and described light guide plate faces on the first surface of described LCDs has multiple fluorescent powder coating area; Described multiple fluorescent powder coating area is periodically zonal arrangement, and the parameter of described 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 described fluorescent powder coating areas is W, W _pfor the width of the pixel of described LCDs, the number that K is viewpoint, Q is the spacing of two adjacent described viewpoints, and L is the distance of described LCDs to described viewpoint, and the described first surface that D is described light guide plate is to the distance of described LCDs; The light display that described the first light source sends is shown 2D image, and the light that described secondary light source sends makes described fluorescent powder coating area stimulated luminescence to show 3D rendering.