CN1506714A - 2D-3D changing automatic stereo display device - Google Patents
2D-3D changing automatic stereo display device Download PDFInfo
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- CN1506714A CN1506714A CNA021552495A CN02155249A CN1506714A CN 1506714 A CN1506714 A CN 1506714A CN A021552495 A CNA021552495 A CN A021552495A CN 02155249 A CN02155249 A CN 02155249A CN 1506714 A CN1506714 A CN 1506714A
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Abstract
The 2D-3D changing automatic stereo display device is one naked eye stereo display device for the observer to watch stereo image without needing special glasses or other device. Technologically, the present invention features that the micro phase difference plate of the present invention and the polarizing plate are matched to form parallax barrier to separate the images to the right and left eye, and this realizes the 2D-3D changing and stereo display. At the same time, the parallel shift of the two sheets of micro phase difference plate is utilized to obtain 3D stereo image of continuous moving image and to complete tracing.
Description
Technical field
The present invention is relevant for a kind of 3 d display device.Particularly a kind of 2 dimensions-3 dimension (2D-3D) suitching type 3 d display devices.
Technical background
The display of commonly using is by black and white, colour, and then series of development such as the high image quality that progresses greatly, and more true to nature, a more natural visual enjoyment is pursued in showing again.Under this trend, do not need to wear the inevitable direction of the next one that bore hole formula 3D display that any special utensil can watch the stereopsis of being personally on the scene becomes display already.Yet, before the comprehensive three-dimensional of display, and the compatibility between existing specification, be to become its application success whether key.
Using barrier (Barrier) has been a known technology as the technology of the three-dimensional display of right and left eyes stereopsis separation.For example, at United States Patent (USP) U.S.Pat.No.7, this technology is disclosed already then in 255,567 (1903) a cases.And at United States Patent (USP) U.S.Pat.No.5,831, in 765 a cases, see also shown in Fig. 8,9, then be to utilize this known techniques, barrier 93 is placed between liquid crystal panel (LCD Panel) 91 and the back light 94, form the autostereoscopic display that right and left eyes separates, its improvement place then is to insert diffuse transmission type (dispersed type) liquid crystal panel 92 that a slice can be switched in scattering and pellucidity between liquid crystal panel 91 and barrier 93, and reaches the purpose of 2D-3D switching.
The shortcoming of this method is:
1. the brightness of liquid crystal panel reduces half;
2. increase the distance between barrier and liquid crystal panel, it is little and view and admire distance and also want near design not to be suitable for liquid crystal picture element transverse width;
3. the diffuse transmission type liquid crystal panel that is added is comparatively expensive, thereby the cost of making display also thereby increase; And
4. observer's trace is discontinuous.
At United States Patent (USP) U.S.Pat.No.6, in 157,424 a cases, shown in Figure 10,11, a liquid crystal panel 91, a striped formula liquid crystal panel barrier (Stripped LCD Barrier) 93 ' and one back light 94 ' have then been comprised; It similarly can be seen its principle that is to use the product barrier and reach the effect that the right and left eyes image separates, and its improvement place then is to use liquid crystal panel to replace general barrier, and utilizes the switchable liquid crystal panel, reaches the purpose that 2D-3D switches.
The major defect of this method is:
1. cost height; And
2. observer's trace is discontinuous.
Therefore, it is not good that above-mentioned traditional type is commonly used the practicality of structure, and the necessity that is improved is arranged.
Summary of the invention
Fundamental purpose of the present invention, be to be to provide a kind of 2D-3D suitching type autostereoscopic display apparatus, wherein, mainly be to utilize two microbit polarizers to replace the known black and white strip difference barrier or the liquid crystal panel disparity barrier of strip pattern, can reach by this can be in the function of 2D and 3D mode switch.
A further object of the present invention promptly is to utilize the parallel of two micro-bit phase difference plates to move, and can be able to the continuous stereo-picture that still can obtain 3D when image moves for the observer.
Above-mentioned order of the present invention is achieved in that
A kind of 2D-3D suitching type autostereoscopic display apparatus of the present invention, it is characterized in that: include two micro-bit phase difference plates, a Polarizer, a backlight module, a penetration spatial light modulator, two drivers and a carrier, relatively move and can between 2D display mode and 3D display mode, switch by the level between these two micro-bit phase difference plates.
This penetration spatial light modulator is a liquid crystal panel.
This each sheet micro-bit phase difference plate is made up of a plurality of vertical stripes zones, and wherein the phasic difference in the part vertical stripes zone of a slice is π, and the phasic difference in the part vertical stripes zone of another sheet is-π that two other regional phasic differences are 0.
The width of a plurality of fringe area of this each sheet micro-bit phase difference plate is slightly larger than the twice of the picture element width of this penetration spatial light modulator.
This each micro-bit phase difference plate can utilize a driver and produce horizontal shift, perhaps with first driver drives, first micro-bit phase difference plate, and adds the combination that second micro-bit phase difference plate adds first driver with second driver drives first.
Overlapping fully when the zone of the zone of the phasic difference π of two micro-bit phase difference plates and phasic difference-π, and the zone of both phasic differences 0 is also complete when overlapping, can be used for showing the 2D image.
When two micro-bit phase difference plates stagger, so that the zone that partially overlaps phasic difference-π in the zone of phasic difference π, the zone that partially overlaps phasic difference 0 in addition, and the part in the zone of phasic difference-π is folded in the zone of phasic difference π, in addition partially overlap phasic difference 0 regional the time, can be used for showing the 3D image.And
A kind of 2D-3D suitching type of the present invention autostereoscopic display apparatus, it is characterized in that: include fixedly micro-bit phase difference plate of a slice, the removable micro-bit phase difference plate of a slice, a Polarizer, a backlight module, a penetration spatial light modulator, a driver can switch between 2D display mode and 3D display mode by the horizontal relative displacement between removable micro-bit phase difference plate.
This penetration spatial light modulator is a liquid crystal panel.
This each sheet micro-bit phase difference plate is made up of a plurality of odd and even number vertical stripes zones, and wherein the phasic difference in the part vertical stripes zone of a slice is π, and the phasic difference in the part vertical stripes zone of another sheet is-Ji, and two other regional phasic differences are 0.
The width of a plurality of fringe area of this each sheet micro-bit phase difference plate is slightly larger than the twice of the picture element width of this penetration spatial light modulator.
This removable micro-bit phase difference plate can utilize this driver and produce horizontal shift.
Overlapping fully when the zone of the zone of the phasic difference π of two micro-bit phase difference plates and phasic difference-π, and the zone of both phasic differences 0 is also complete when overlapping, can be used for showing the 2D image.
When two micro-bit phase difference plates stagger, so that half of the zone of phasic difference Ji is overlapped in the zone of phasic difference-π, second half is overlapped in the zone of phasic difference 0, and a half lap in the zone of phasic difference-π is in the zone of phasic difference π, when second half is overlapped in phasic difference 0 regional, can be used for showing the 3D image.
Advantage of the present invention with good effect is: because 2D-3D suitching type autostereoscopic display apparatus of the present invention mainly is to utilize two micro-bit phase difference plates with vertical strip image, wherein the phase delay (Phase Retardation) of the odd number bar image of a slice micro-bit phase difference plate amount is 0, and the phase-delay quantity of even number bar image be Ji (or anti-, promptly odd number bar image be π and even number bar image is 0); And the phase-delay quantity of the odd number bar image of another sheet micro-bit phase difference plate is 0, and the phase-delay quantity of even number bar image is-π (otherwise or).Behind this two micro-bit phase difference plates overlapping, utilize the relativeness of two micro-bit phase difference plate horizontal geometric positions, and can present the image of 2D, 3D and reach the basic purpose of bore hole stereo display, very simple and feasible.Simultaneously, because Polarizer can be selected consistent with the light polarizing film direction with LCD panel for use, so brightness can not lost.Moreover the present invention makes audience's eyes always at best viewing location, utilizes parallel the moving between two micro-bit phase difference plates, and can be able to the continuous stereo-picture that still can obtain 3D when image moves for the observer, and can finish the purpose of trace.In sum, result of use of the present invention is good, and low cost of manufacture has practical value.
Description of drawings
Fig. 1 is the structural representation of the present invention's 2D configuration when solid and interplanar conversion;
Fig. 2 is the structural representation of the present invention's 3D configuration when solid and interplanar conversion;
Fig. 3 uses the synoptic diagram of micro-bit phase difference plate in 2D pattern phase delay among the present invention;
Fig. 4 uses the synoptic diagram of micro-bit phase difference plate in 3D pattern phase delay among the present invention;
Fig. 5 is the local enlarged diagram of the structural arrangements of the present invention when presenting the 2D image; Fig. 6 is the local enlarged diagram of the structural arrangements of the present invention when presenting the 3D image;
Fig. 7 is the structural representation of the present invention when utilizing trace;
Fig. 8 is a United States Patent (USP) the 5th, 831, and 765 a cases are used the structural representation that presents plane picture;
Fig. 9 is a United States Patent (USP) the 5th, 831, and 765 a cases are used the structural representation that presents stereo-picture;
Figure 10 is a United States Patent (USP) the 6th, 157, and 424 a cases are used the structural representation that presents plane picture;
Figure 11 is a United States Patent (USP) the 6th, 157, and 424 a cases are used the structural representation that presents stereo-picture.The piece number explanation:
1 imaging liquid LCD panel
2 micro-bit phase difference plates
21 odd number stripe zones
22 even number stripe zones
3 micro-bit phase difference plates
31 odd number stripe zones
32 even number stripe zones
4 Polarizers
5 backlight modules
6 drivers
7 drivers
8 carriers
91 liquid crystal panels
92 diffuse transmission type liquid crystal panels
93 barriers, 94 back lights
93 ' line formula liquid crystal panel barrier
94 ' back light
Embodiment
See also Fig. 1, Fig. 2 of accompanying drawing of the present invention, wherein, 2D-3D suitching type autostereoscopic display apparatus of the present invention mainly is to have comprised 1, two micro-bit phase difference plate 2 of a penetration spatial light modulator (liquid crystal panel), 3, a Polarizer 4, a backlight module 5, two drivers 6,7 and carriers 8.Wherein, utilize the horizontal relative position of 2,3 of two micro-bit phase difference plates, and can between 2D (as Fig. 1) and 3D (as Fig. 2) display mode, switch.
Image display panels 1 is being placed in two micro-bit phase difference plates 2,3 front and back, as shown in Figure 5, if micro-bit phase difference plate 2 (or micro-bit phase difference plate 3) is overlapping with the fringe area of driver 6 drivings and micro-bit phase difference plate 3 (or micro-bit phase difference plate 2), that is, odd number stripe district 31 is aimed in odd number stripe zone 21, even number stripe district 32 is aimed in even number stripe district 22, and in the case, micro-bit phase difference plate 2 and micro-bit phase difference plate 3 overlappings form two kinds of states
A:21+31 synthesis phase difference 0+0=0
B:22+32 synthesis phase difference π-π=0
That is to say, micro-bit phase difference plate 2,3 phase differential effect complete obiteration, just look like not have two micro-bit phase difference plates to exist equally this moment, the effect and the general 2D display that can not form any barrier (Barrier) are identical, and, because Polarizer 4 can be selected for use consistent with the light polarizing film direction of LCD panel, so brightness can not lost.
Please referring to shown in Figure 6,, make two micro-bit phase difference plates 2 if utilize driver 6 to drive micro-bit phase difference plate 2 or 3,3 width of fringe P/2 that stagger half, wherein the size of P is slightly larger than the twice of image panel picture element (Pixel) width (W), so, meets following known relation:
P=2W(d+t)/d
Wherein
P is the width of fringe of micro-bit phase difference plate
W is an image panel picture element width
D is that the observer is to the distance between image panel
T is that the liquid crystal display image panel is to the distance between micro-bit phase difference plate
Under this pattern, 2,3 overlappings of micro-bit phase difference plate form four kinds of different states:
A:22+33 synthesis phase difference π+0=π
B:22+31 synthesis phase difference π-π=0
C:21+32 synthesis phase difference 0-π=-π
D:21+31 synthesis phase difference 0+0=0
Because the phasic difference of π and-π is identical for the effect that 45 ° of polar biased light are caused, so two micro-bit phase difference plates 2,3 synthetic after, it is equivalent to the micro-bit phase difference plate that a slice width of fringe is P/2, the back light polarizing film that cooperates Polarizer 4 and liquid crystal panel, effect is equivalent to the black and white disparity barrier that width of fringe is P/2.Therefore, the observer can see the image of 3D therefrom.
Please referring to shown in Figure 7, wherein, if when the observer moves, in the 3D imaging device of commonly using, the image that presents 3D originally will can't correctly be seen 3-D effect because of moving of observer usually.But in 2D-3D suitching type autostereoscopic display apparatus of the present invention, when discovery audience head laterally moves so that can't see stereopsis (knowing that the method that the audience moves does not comprise in the present invention), can there be dual mode to allow the audience continue to see correct stereopsis, first kind be allow image turn left (or turning right) move a picture element, the effect that causes the right and left eyes image to exchange, second kind is to drive carrier 8 with driver 7 to be with micro-bit phase difference plate 2,3, and driver 6 moves simultaneously, when the observer when moving right, carrier is toward moving left, allow audience's eyes always at best viewing location, can set mobile maximum is P/2, when the observer moves the displacement that causes carrier 8 and is moved beyond above-mentioned maximum, can use the traversing mode of image to compensate; Also can set other and move maximum according to suitable angular field of view.
The above only is most preferred embodiment of the present invention is showed, and so is not the scope that is to limit institute of the present invention desire protection; The scope of institute of the present invention desire protection should be that the scope that is defined by claim is defined, rather than is limited by the content described in the instructions.
Claims (14)
1. 2D-3D suitching type autostereoscopic display apparatus, it is characterized in that: include two micro-bit phase difference plates, a Polarizer, a backlight module, a penetration spatial light modulator, two drivers and a carrier, relatively move and can between 2D display mode and 3D display mode, switch by the level between these two micro-bit phase difference plates.
2. 2D-3D suitching type autostereoscopic display apparatus according to claim 1 is characterized in that this penetration spatial light modulator is a liquid crystal panel.
3. 2D-3D suitching type autostereoscopic display apparatus according to claim 1, it is characterized in that: this each sheet micro-bit phase difference plate is made up of a plurality of vertical stripes zones, wherein the phasic difference in the part vertical stripes zone of a slice is π, the phasic difference in the part vertical stripes zone of another sheet is-π that two other regional phasic differences are 0.
4. 2D-3D suitching type autostereoscopic display apparatus according to claim 3 is characterized in that: the width of a plurality of fringe area of this each sheet micro-bit phase difference plate is slightly larger than the twice of the picture element width of this penetration spatial light modulator.
5. according to claim 1 or 3 described 2D-3D suitching type autostereoscopic display apparatus, it is characterized in that: this each micro-bit phase difference plate can utilize a driver and produce horizontal shift, perhaps with first driver drives, first micro-bit phase difference plate, and add the combination that second micro-bit phase difference plate adds first driver with second driver drives first.
6. according to claim 3 or 4 described 2D-3D suitching type autostereoscopic display apparatus, it is characterized in that, overlapping fully when the zone of the zone of the phasic difference π of two micro-bit phase difference plates and phasic difference-π, and the zone of both phasic differences 0 is also complete when overlapping, can be used for showing the 2D image.
7. according to claim 3 or 4 described 2D-3D suitching type autostereoscopic display apparatus, it is characterized in that, when two micro-bit phase difference plates stagger, so that the zone that partially overlaps phasic difference-π in the zone of phasic difference Ji, the zone that partially overlaps phasic difference 0 in addition, and the part in the zone of phasic difference-π is folded in the zone of phasic difference Ji, in addition partially overlap phasic difference 0 regional the time, can be used for showing the 3D image.
8. 2D-3D suitching type autostereoscopic display apparatus, it is characterized in that: include fixedly micro-bit phase difference plate of a slice, the removable micro-bit phase difference plate of a slice, a Polarizer, a backlight module, a penetration spatial light modulator, a driver can switch between 2D display mode and 3D display mode by the horizontal relative displacement between removable micro-bit phase difference plate.
9. 2D-3D suitching type autostereoscopic display apparatus according to claim 8 is characterized in that: this penetration spatial light modulator is a liquid crystal panel.
10. 2D-3D suitching type autostereoscopic display apparatus according to claim 8, it is characterized in that: this each sheet micro-bit phase difference plate is made up of a plurality of odd and even number vertical stripes zones, wherein the phasic difference in the part vertical stripes zone of a slice is π, the phasic difference in the part vertical stripes zone of another sheet is-π that two other regional phasic differences are 0.
11. 2D-3D suitching type autostereoscopic display apparatus according to claim 10 is characterized in that: the width of a plurality of fringe area of this each sheet micro-bit phase difference plate is slightly larger than the twice of the picture element width of this penetration spatial light modulator.
12. according to Claim 8 or 10 described 2D-3D suitching type autostereoscopic display apparatus, it is characterized in that: this removable micro-bit phase difference plate can utilize this driver and produce horizontal shift.
13. according to according to claim 10 or 11 described 2D-3D suitching type autostereoscopic display apparatus, it is characterized in that: when the zone of the zone of the phasic difference π of two micro-bit phase difference plates and phasic difference-π overlapping fully, and the zone of both phasic differences 0 is also complete when overlapping, can be used for showing the 2D image.
14. according to according to claim 10 or 11 described 2D-3D suitching type autostereoscopic display apparatus, it is characterized in that: when two micro-bit phase difference plates stagger, so that half of the zone of phasic difference Ji is overlapped in the zone of phasic difference-π, second half is overlapped in the zone of phasic difference 0, and a half lap in the zone of phasic difference-π is in the zone of phasic difference π, when second half is overlapped in phasic difference 0 regional, can be used for showing the 3D image.
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