CN101576662A - Display device and method for displaying three-dimensional stereo image - Google Patents
Display device and method for displaying three-dimensional stereo image Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 30
- 230000003287 optical effect Effects 0.000 claims abstract description 94
- 239000004973 liquid crystal related substance Substances 0.000 claims description 27
- 230000005611 electricity Effects 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 16
- 239000000758 substrate Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
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- 208000029444 double vision Diseases 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
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Abstract
The invention provides a display device comprising a first display panel, a second display panel and an optical plate, wherein the first display panel is provided with a plurality of first display areas and is applicable to providing a first image. The second display panel is provided with is provided with a plurality of second display areas and is applicable to providing a second image. The optical plate is provided with a plurality of optical units capable of changing focus. The first display areas and the second display areas are arranged corresponding to the optical units, so that the first image can transmit through the optical units to form a first real image and the second image can also transmit through the optical units to form a second real image. The first real image is isolated from the optical plate by a first depth of focus, the second real image is isolated from the optical plate by a second depth of focus, and the first depth of focus and the second depth of focus are different from each other. The device can utilize different display images to form a three-dimensional stereo image, and a user can adjust the sound-surround ambiance of the three-dimensional stereo image according to the personnel interest thereof.
Description
Technical field
The invention relates to a kind of display device and show the method for 3 D stereoscopic image, and particularly about a kind of adjustable image depth of field to increase relief display device and to show the method for 3 D stereoscopic image.
Background technology
Along with the evolution of science and technology and the improvement of life, the human requirement that shows for image also improves gradually.For example, the improvement of display device, except the image that will obtain high image quality, recently many researchs being arranged more is towards the holographic display device that can improve image degree true to nature and user's telepresenc.
Fig. 1 is the imaging mode synoptic diagram of known a kind of 3 d display device.Please refer to Fig. 1, known 3 d display device 100 has first display panel 110 and second display panel 120.First display panel 110 and second display panel 120 be arranged in parallel, and a space D is arranged each other.Simultaneously, second display panel 120 is between the user P and first display panel 110.
For the picture that user P is seen presents three-dimensional visual effect, when 3 d display device 100 shows, first display panel 110 shows the first picture F1, and second display panel 120 shows the second picture F2, and first display panel 110 can present different brightness with second display panel 120 on corresponding position.For example, the first picture F1 for example is respectively 10,50 and 90 in the brightness at primary importance 112, the second place 114 and 116 places, the 3rd position, and the brightness of the second picture F2 at primary importance 122, the second place 124 and 126 places, the 3rd position for example is 90,50 and 10.
Because human vision can produce the impression of different distance to the image of different brightness, so user P can experience first stereopsis 132, second stereopsis 134 and the 3rd stereopsis 136 when watching the display frame of display device 100.Particularly, it is the most close with the distance of self that user P can experience first stereopsis 132, and the 3rd stereopsis 136 and the distance of self are farthest.
Can make user P obtain three-dimensional video vision impression by above-mentioned display device 100, but for user P, the stereopsis of display device 100, its image space must be to drop between first display panel 110 and second display panel 120.In other words, be subject to the space D between first display panel 110 and second display panel 120, the stereopsis that user P is seen is limited in certain field depth.Therefore, the stereopsis that display device 100 is produced can be subjected to the restriction of space D, is difficult to further promote user P solid impression visually.
Summary of the invention
The present invention proposes a kind of display device, and producible stereopsis is not subject to the component design of display device.
The present invention proposes a kind of method that produces 3 D stereoscopic image again, can adjust 3 D stereoscopic image according to user's hobby
The method of display device and demonstration 3 D stereoscopic image
Technical field
The invention relates to a kind of display device and show the method for 3 D stereoscopic image, and particularly about a kind of adjustable image depth of field to increase relief display device and to show the method for 3 D stereoscopic image.
Background technology
Along with the evolution of science and technology and the improvement of life, the human requirement that shows for image also improves gradually.For example, the improvement of display device, except the image that will obtain high image quality, recently many researchs being arranged more is towards the holographic display device that can improve image degree true to nature and user's telepresenc.
Fig. 1 is the imaging mode synoptic diagram of known a kind of 3 d display device.Please refer to Fig. 1, known 3 d display device 100 has first display panel 110 and second display panel 120.First display panel 110 and second display panel 120 be arranged in parallel, and a space D is arranged each other.Simultaneously, second display panel 120 is between the user P and first display panel 110.
For the picture that user P is seen presents three-dimensional visual effect, when 3 d display device 100 shows, first display panel 110 shows the first picture F1, and second display panel 120 shows the second picture F2, and first display panel 110 can present different brightness with second display panel 120 on corresponding position.For example, the first picture F1 for example is respectively 10,50 and 90 in the brightness at primary importance 112, the second place 114 and 116 places, the 3rd position, and the brightness of the second picture F2 at primary importance 122, the second place 124 and 126 places, the 3rd position for example is 90,50 and 10.
Because human vision can produce the impression of different distance to the image of different brightness, so user P can experience first stereopsis 132, second stereopsis 134 and the 3rd stereopsis 136 when watching the display frame of display device 100.Particularly, it is the most close with the distance of self that user P can experience first stereopsis 132, and the 3rd stereopsis 136 and the distance of self are farthest.
Can make user P obtain three-dimensional video vision impression by above-mentioned display device 100, but for user P, the stereopsis of display device 100, its image space must be to drop between first display panel 110 and second display panel 120.In other words, be subject to the space D between first display panel 110 and second display panel 120, the stereopsis that user P is seen is limited in certain field depth.Therefore, the stereopsis that display device 100 is produced can be subjected to the restriction of space D, is difficult to further promote user P solid impression visually.
Summary of the invention
The present invention proposes a kind of display device, and producible stereopsis is not subject to the component design of display device.
The present invention proposes a kind of method that produces 3 D stereoscopic image again, can adjust the telepresenc of 3 D stereoscopic image according to user's hobby.
The present invention proposes a kind of display device, comprises first display panel, second display panel and optical sheet.First display panel has a plurality of first viewing areas, and first display panel is suitable for providing first picture.Second display panel has a plurality of second viewing areas, and second display panel is suitable for providing second picture.Optical sheet has a plurality of optical units that can change focal length.Optical sheet is parallel to first display panel and the second display panel setting, and first display panel and optical sheet first spacing of being separated by, second display panel and optical sheet second spacing of being separated by.Second display panel is between first display panel and optical sheet, and a plurality of first viewing area, the corresponding setting with a plurality of optical units in a plurality of second viewing area.First picture sees through a plurality of optical units and forms first real image, and second picture forms second real image through a plurality of optical units.First real image and optical sheet first depth of field of being separated by, second real image and optical sheet second depth of field of being separated by, and first depth of field is different with second depth of field.
In one embodiment of this invention, above-mentioned a plurality of optical unit comprises a plurality of Zoom lens.
In one embodiment of this invention, above-mentioned a plurality of optical unit is a plurality of liquid crystal lens (liquid crystal lens) unit or the moistening lens of a plurality of electricity (electrowetting lens) unit.
In one embodiment of this invention, the first above-mentioned display panel is a display panels.
In one embodiment of this invention, the second above-mentioned display panel is a display panels.
In one embodiment of this invention, above-mentioned display device, wherein first display panel comprises a plurality of demonstration picture elements, the quantity that is arranged in the demonstration picture element of a plurality of first viewing areas and each first viewing area is a plurality of.
In one embodiment of this invention, above-mentioned display device, wherein second display panel comprises a plurality of demonstration picture elements, the quantity that is arranged in the demonstration picture element of a plurality of second viewing areas and each second viewing area is a plurality of.
The present invention proposes a kind of method that produces 3 D stereoscopic image again, comprise the display device that provides above-mentioned, see through first display panel and show first picture, see through second display panel and show second picture and the focal length of adjusting a plurality of optical units, form big or small identical first real image and second real image respectively so that first picture sees through a plurality of optical units with second picture.Wherein, first depth of field and second depth of field change with the image size of first picture and second picture.
In one embodiment of this invention, the method for above-mentioned generation 3 D stereoscopic image, when wherein the image of first picture and second picture size was identical, second depth of field equaled second spacing so that first depth of field equals first spacing to adjust the focal length of a plurality of optical units.For example, the method of adjusting the focal length of a plurality of optical units comprises: when first display panel shows first picture, make a plurality of optical units have first focal length, and second display panel is when showing second picture, make a plurality of optical units have second focal length, and first focal length is 1/2nd of first spacing, and second focal length is 1/2nd of second spacing.In addition, the method that produces 3 D stereoscopic image more comprises first display panel and second display panel is alternately shown.
In one embodiment of this invention, the method for above-mentioned generation 3 D stereoscopic image when wherein the image of first picture and second picture varies in size, is adjusted the focal length of a plurality of optical units so that first real image is identical with the image size of second real image.In one embodiment, first display panel and second display panel show simultaneously, and the picture frame that first display panel and second display panel show simultaneously is in the time, and the fixed focal length of a plurality of optical units is constant.In addition, the difference of first depth of field and second depth of field changes with the image difference in size of first picture and second picture.
Based on above-mentioned,, therefore can adjust the image space of stereopsis owing to the focal length of the adjustable whole optical sheet of display device of the present invention.In addition, the method for generation 3 D stereoscopic image of the present invention can show the 3 D stereoscopic image that the depth of field is different, so the user can adjust the telepresenc of 3 D stereoscopic image according to the personal like.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Description of drawings
Fig. 1 is the imaging mode synoptic diagram of known a kind of 3 d display device.
Fig. 2 is the display device synoptic diagram of one embodiment of the invention.
Fig. 3 is the imaging method for image synoptic diagram of the display device of Fig. 2.
Fig. 4 (a) ~ (c) is a kind of method synoptic diagram that shows 3 D stereoscopic image of one embodiment of the invention.
Fig. 5 (a) ~ (b) is the method synoptic diagram that the another kind of one embodiment of the invention shows 3 D stereoscopic image.
The liquid crystal lens cell schematics of Fig. 6 (a) ~ (b) one embodiment of the invention.
The electric moistening lens unit synoptic diagram of Fig. 7 (a) ~ (b) one embodiment of the invention.
Primary clustering symbol description in the accompanying drawing:
100,200: display device
110,210: the first display panels
112,122: the first images
114,124: the second images
116,126: the three images
120,220: the second display panels
132: the first stereopsis
134: the second stereopsis
136: the three stereopsis
212: the first viewing areas
214,224: show picture element
222: the second viewing areas
230: optical sheet
232: optical unit
300: the liquid crystal lens unit
310: Polarizer
320,410: the first glass-based versions
330: liquid crystal layer
332: liquid crystal molecule
340,420: the second glass substrates
351: focus
400: electric moistening lens unit
432: the first electrodes
434: the second electrodes
440: insulation course
451: focus
D: spacing
F1: first picture
F2: second picture
D1: first spacing
D2: second spacing
P: user
L: light
V: voltage
W: water layer
O: oil reservoir
T: surface tension
S: interface
R1: first real image
R2: second real image
DF1: first depth of field
DF2: second depth of field
F1: first focal length
F2: second focal length
F3: the 3rd focal length
F4: the 4th focal length
Δ d1: first depth of field is poor
Δ d2: second depth of field is poor
T1, t2: picture frame time
Embodiment
Fig. 2 is the display device synoptic diagram of one embodiment of the invention.Please refer to Fig. 2, display device 200 comprises first display panel 210, second display panel 220 and optical sheet 230.
First display panel 210 has a plurality of first viewing areas 212, and first display panel 210 is suitable for providing the first picture F1.In the present embodiment, first display panel 210 is a display panels, for example, first display panel 210 for example can be semi-penetrating and semi-reflecting type display panel, reflective display panel, colored filter display panel of (colorfilter on array) on active layers, active layers display panel of (array on color filter) on colored filter, vertical orientation type (VA) display panel, horizontal switch type (IPS) display panel, multi-domain perpendicular alignment-type (MVA) display panel, twisted nematic (TN) display panel, super-twist nematic (STN) display panel, pattern vertical orientation type (PVA) display panel, super pattern vertical orientation type (S-PVA) display panel, the advanced person is type (ASV) display panel with great visual angle, fringe field switch type (FFS) display panel, continuous fireworks shape arrange type (CPA) display panel, rotational symmetry is arranged micella type (ASM) display panel, optical compensation curved arrange type (OCB) display panel, super horizontal switch type (S-IPS) display panel, advanced super horizontal switch type (AS-IPS) display panel, extreme edge electric field switch type (UFFS) display panel, blue phase display panel (Blue phase display panel), stabilizing polymer alignment-type display panel, double vision angle type (dual-view) display panel, the electrophoretype display panel, blue phase display panel (Blue Phase) or other profile plate.Yet above-mentioned the present invention does not limit the kind of first display panel 210 only for illustrating, and in other embodiments, first display panel 210 also can be the display panel of other type.
Further, in display device 200, first display panel 210 for example comprises a plurality of demonstration picture elements 214, is arranged in a plurality of first viewing areas 212, and the quantity of the demonstration picture element 214 in each first viewing area 212 is a plurality of.At this, first viewing area 212 shown in Figure 2 and demonstration picture element 214 are only for giving an example, and the present invention does not limit the size or first quantity that shows picture element 214 that viewing area 212 comprises of first viewing area 212.
Please continue with reference to Fig. 2, in display device 200, second display panel 220 has a plurality of second viewing areas 222, and second display panel 220 is suitable for providing the second picture F2.In the present embodiment, second display panel 220 is a display panels.Be similar to the explanation of above-mentioned first display panel 210, the present invention does not limit the kind of second display panel 220, and this area has knows the knowledgeable usually, when the kind that can optionally select second display panel 220.In addition, second display panel 220 also comprises a plurality of demonstration picture elements 224, and it is arranged in a plurality of second viewing areas 222, and the quantity of the demonstration picture element 224 in each second viewing area 222 is a plurality of.
Similarly, the present invention does not limit the size or second quantity that shows picture element 224 that viewing area 222 comprises of second viewing area 222.In different embodiment, first viewing area 212 comprises the quantity that shows picture element 214 and second viewing area 222 and comprises the quality of image difference that can make display device 200 shown when the quantity that shows picture element 224 is changed.
Above-mentioned first display panel 210 and second display panel 220 can be the display panel of identical type, also can be different types of display panels.In addition, in the present embodiment, first viewing area 212 has the quantity that shows picture element 214, and it is identical having the quantity that shows picture element 224 with second viewing area 222, but in other embodiments, also can be inequality.
Fig. 3 is the imaging method for image synoptic diagram of the display device of Fig. 2.Please be provided with optical sheet 230 in the display device 200 simultaneously with reference to Fig. 2 and Fig. 3, particularly, optical sheet 230 has a plurality of optical units 232 that can change focal length.
Above-mentioned optical sheet 230 is to be parallel to first display panel 210 and second display panel 220 is provided with, and first display panel 210 and the optical sheet 230 first spacing d1 of being separated by, second display panel 220 and the optical sheet 230 second spacing d2 of being separated by.
Because first depth of field DF1 is different with second depth of field DF2, so display device 200 can make the user visually produce the impression of 3 D stereoscopic image.Particularly, when the gap of first depth of field DF1 and second depth of field DF2 strengthens, represent that promptly visual stereoscopic sensation can deepen, and the image that display device 200 is produced will be to the different telepresenc of people.
What deserves to be mentioned is, in display device 200, can use more a plurality of optical unit 232 show images, this represents that promptly the pairing demonstration picture element of each optical unit 232 214,224 is few more.In other words, but usable floor area is littler, the more optical unit 232 of number forms stereopsis, by this, can further promote the display quality of the shown 3 D stereoscopic image of display device 200.
When reality is stated display device 200 in the use, can use different modes of operation to show 3 D stereoscopic image, below will be illustrated this different mode of operation.
Fig. 4 (a) ~ (c) is a kind of method synoptic diagram that shows 3 D stereoscopic image of one embodiment of the invention, wherein is to be that example is so that explanation with single optical unit 232.Please refer to Fig. 2, Fig. 3 and Fig. 4 (a) ~ (c), when the image size of the first picture F1 and the second picture F2 is identical, the focal length of a plurality of optical units 232 can moderately be adjusted so that first depth of field DF1 equals the first spacing d1, and second depth of field DF2 equals the second spacing d2.
The method of the focal length of a plurality of optical units 232 of above-mentioned adjustment comprises: when first display panel 210 shows the first picture F1, shown in Fig. 4 (a), make a plurality of optical units 232 have first focal distance f 1; And when second display panel 220 shows the second picture F2, shown in Fig. 4 (b), make a plurality of optical units 232 have second focal distance f 2.Particularly, first focal distance f 1 is 1/2nd of the first spacing d1, and second focal distance f 2 is 1/2nd of the second spacing d2.In other words, the first spacing d1 that the first picture F1 and optical unit are 232 is the twice of first focal distance f 1, and the second spacing d2 of 232 of the second picture F2 and optical units is the twice of second focal distance f 2.
Shown in Fig. 4 (a), when first display panel 210 showed the first picture F1, the image of the first picture F1 was positioned at the two focus length place of optical unit 232.Therefore, the image of the first picture F1 can be converted into the first real image R1 that size is identical and direction is opposite at the two focus length place of optical unit 232 opposite sides.And similarly, shown in Fig. 4 (b), when second display panel 220 showed the second picture F2, the image of the second picture F2 was positioned at the two focus length place of optical unit 232.Therefore, the image of the second picture F2 can be converted into the second real image R2 that size is identical and direction is opposite at the two focus length place of optical unit 232 opposite sides.
In addition, first display panel 210 and second display panel 220 are alternately to show at present embodiment.That is to say that when first display panel 210 showed the first picture F1, second display panel 220 was for closing, and when second display panel, 220 demonstrations, the second picture F2, first display panel 210 is for closing.
Shown in Fig. 4 (c), when the switching of first display panel 210 and second display panel 220 is increased to human eye can't discover the time frequently, the first real image R1 and the second real image R2 can produce the impression that occurs simultaneously on human eye vision.At this moment, because the difference of first depth of field DF1 and second depth of field DF2, human eye just can be experienced the shown 3 D stereoscopic image of display device 200.
What deserves to be mentioned is that optical unit 232 is pancratic design in the present embodiment, so the first picture F1 can be identical with the size of the second picture F2.Therefore, the show image of first display panel 210 and second display panel 220 does not need can alleviate through adjusting in addition the burden of chip for driving.
Fig. 5 (a) ~ (b) is the method synoptic diagram that the another kind of one embodiment of the invention shows 3 D stereoscopic image, wherein is to be that example is so that explanation with single optical unit 232.Please refer to Fig. 2, Fig. 3 and Fig. 5 (a) ~ (b), except the mode of above-mentioned generation 3 D stereoscopic image, when the image of the first picture F1 and the second picture F2 varies in size, can adjust the focal length of a plurality of optical units 232 so that the first real image R1 is identical with the image size of the second real image R2.
Shown in Fig. 5 (a), first display panel 210 of display device 200 and second display panel 220 are for showing simultaneously.In order to obtain the size identical first real image R1 and the second real image R2, the focal length of optical unit 232 is adjusted to the 3rd focal length f3.In the picture frame time t1 that first display panel 210 and second display panel 220 show simultaneously, the 3rd focal length f3 is for example for immobilizing.In addition, the difference between second depth of field DF2 of first depth of field DF1 of the first real image R1 and the second real image R2 for example is first depth of field difference Δ d1.
Then, shown in Fig. 5 (b), in the picture frame time t2 that first display panel 210 and second display panel 220 show simultaneously, the image of the first picture F1 and the second picture F2 varies in size in picture frame time t1.Therefore, the focal length of a plurality of optical units 232 is adjusted to the 4th focal distance f 4 to obtain the size identical first real image R1 and the second real image R2.In picture frame time t2, the 4th focal distance f 4 immobilizes, and the difference between second depth of field DF2 of first depth of field DF1 of the first real image R1 and the second real image R2 is second depth of field difference Δ d2.
By Fig. 5 (a) ~ (b) as can be known, first depth of field difference Δ d1 and second depth of field difference Δ d2 can change along with the image difference in size of the first picture F1 and the second picture F2.Therefore, in different picture frame time t1, t2, the user can experience the image of different stereo effects.That is to say that present embodiment can be adjusted the focal length of optical unit 232 according to the image difference in size of the first picture F1 and the second picture F2, to produce the 3 D stereoscopic image that size is identical, depth of field difference is different.
See through the method for above-mentioned demonstration 3 D stereoscopic image, can make display device shown in Figure 2 200 show 3 D stereoscopic image.Particularly, in the above-described embodiments, see through the focal length variations of varifocal optical unit 232 and the show image size of the first picture F1 and the second picture F2, can further strengthen the depth of field difference of 3 D stereoscopic image.Therefore, the user utilizes display device 200 can obtain better stereopsis display effect.
In more detail, have the function that changes focal length for making above-mentioned optical unit 232, a plurality of optical units 232 for example are made up of a plurality of Zoom lens unit.Particularly, optical unit 232 can be liquid crystal lens (liquid crystal lens) unit 300, shown in Fig. 6 (a) ~ (b), or electric moistening lens (electrowetting lens) unit 400, shown in Fig. 7 (a) ~ (b).
With regard to the liquid crystal lens unit 300 shown in Fig. 6 (a) ~ (b), liquid crystal lens unit 300 for example comprises Polarizer (polarizer) 310, first glass substrate 320, second glass substrate 340 and between the liquid crystal layer 330 of 340 of first glass substrate 320 and second glass substrates.Liquid crystal layer 330 is made of a plurality of liquid crystal molecule 332.In addition, be formed with transparency electrode 334 in the both sides up and down of liquid crystal layer 330.
When light L enters liquid crystal lens unit 300, at first can make light L have specific polarization direction through polaroid 310.Then, light L moves on and passes through first glass substrate 320, liquid crystal layer 330 and second glass substrate 340.At last, because the optical effect of liquid crystal molecule 332, light L can focus on focus 351 in the outside of second glass substrate 340.
For the focal length that makes liquid crystal lens unit 300 changes, can apply a voltage difference V to liquid crystal layer 330, shown in Fig. 6 (b).Generally speaking, when the transparency electrode 334 of the both sides up and down of liquid crystal layer 330 was provided voltage difference V, liquid crystal molecule 332 can be subjected to the influence of voltage difference V and deflection.At this moment, light L is by liquid crystal layer 330 time, and direct of travel can change to some extent.Therefore, light L can be a focus 352 in the position of second glass substrate, 340 exterior focusings, and its focus 351 with Fig. 6 (a) is different.In brief, the liquid crystal layer 330 that sees through liquid crystal lens unit 300 applies voltage difference V, can cause the focal length of liquid crystal lens unit 300 to change.
In addition, with regard to the electric moistening lens unit 400 shown in Fig. 7 (a) ~ (b), electric moistening lens unit 400 for example comprises first glass substrate 410, second glass substrate 420, first electrode 432, second electrode 434, insulation course 440 and between the water layer W and the oil reservoir O of 420 of first glass substrate 410 and second glass substrates.Because the interface S between water layer W and oil reservoir O be the curved surface shown in Fig. 7 (a), light L passes through first glass substrate 410, and when passing through water layer W and oil reservoir O, light L will disperse and non-intersect.
For the focal length that makes electric moistening lens unit 400 changes, can apply voltage V to first electrode 432 and second electrode 434, shown in Fig. 7 (b).At this moment, the positive and negative electric charge of insulation course 440 both sides gathers the surface tension T that can change between water layer W and oil reservoir O.Therefore, light L can focus on focus 451 below second glass substrate 420 behind the interface S that passes through between this water layer W and oil reservoir O.
Hence one can see that, and first electrode 432 and second electrode 434 are applied the optical property change that voltage V can cause electric moistening lens unit 400.More particularly, the size of control voltage V can change the focal length of electric moistening lens unit 400.
See through and use the liquid crystal lens unit 300 shown in above-mentioned Fig. 6 (a) ~ (b), or the electric moistening lens unit 400 shown in Fig. 7 (a) ~ (b), can make optical unit 232 have the function that changes focal length.
In sum, because display device of the present invention has varifocal optical unit, so display device can utilize different display frame to present 3 D stereoscopic image.The present invention shows the method for 3 D stereoscopic image, experiences the different 3 D stereoscopic image of the depth of field in the time of can making the user watch the shown image of above-mentioned display device.In addition, the image space of stereopsis more can not be restricted, so the user can be according to the stereoscopic sensation and the telepresenc of its hobby adjustment 3 D stereoscopic image, to obtain different 3 D stereoscopic image display effects.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when looking being as the criterion that claims define.
Claims (14)
1. a display device is characterized in that, comprising:
One first display panel has a plurality of first viewing areas, and this first display panel provides one first picture;
One second display panel has a plurality of second viewing areas, and this second display panel provides one second picture; And
One optical sheet, have a plurality of optical units that can change focal length, this optical sheet is parallel to this first display panel and this second display panel setting, and this first display panel and this optical sheet one first spacing of being separated by, this second display panel and this optical sheet one second spacing of being separated by;
Wherein, this second display panel is between this first display panel and this optical sheet, and those first viewing areas, the corresponding setting in those second viewing areas with those optical units, so that seeing through those optical units, this first picture forms one first real image, and this second picture forms one second real image through those optical units, this first real image and this optical sheet one first depth of field of being separated by, this second real image and this optical sheet one second depth of field of being separated by, and this first depth of field is different with this second depth of field.
2. display device according to claim 1 is characterized in that described optical unit comprises a plurality of Zoom lens.
3. display device according to claim 2 is characterized in that, described optical unit is a plurality of liquid crystal lens unit or the moistening lens unit of a plurality of electricity.
4. display device according to claim 1 is characterized in that, described first display panel is a display panels.
5. display device according to claim 1 is characterized in that, described second display panel is a display panels.
6. display device according to claim 1 is characterized in that, described first display panel comprises a plurality of demonstration picture elements, be arranged in those first viewing areas and respectively those quantity that show picture elements of this first viewing area be a plurality of.
7. display device according to claim 1 is characterized in that, described second display panel comprises a plurality of demonstration picture elements, be arranged in those second viewing areas and respectively those quantity that show picture elements of this second viewing area be a plurality of.
8. a method that shows 3 D stereoscopic image is characterized in that, comprising:
Provide just like the 1st described display device of claim;
See through this first display panel and show this first picture;
See through this second display panel and show this second picture; And
Adjust the focal length of those optical units, form size identical this first real image and this second real image respectively so that this first picture sees through those optical units with this second picture, wherein this first depth of field and this second depth of field change with the image size of this first picture and this second picture.
9. the method for demonstration 3 D stereoscopic image according to claim 8, it is characterized in that, when the image size of described first picture and this second picture was identical, this second depth of field equaled this second spacing so that this first depth of field equals this first spacing to adjust the focal length of those optical units.
10. the method for demonstration 3 D stereoscopic image according to claim 9, it is characterized in that, the method of wherein adjusting the focal length of those optical units comprises when this first display panel shows this first picture, make those optical units have one first focal length, and this second display panel is when showing this second picture, make those optical units have one second focal length, and this first focal length is 1/2nd of this first spacing, and this second focal length is 1/2nd of this second spacing.
11. the method for demonstration 3 D stereoscopic image according to claim 10 is characterized in that, more comprises this first display panel and this second display panel are alternately shown.
12. the method for demonstration 3 D stereoscopic image according to claim 8, it is characterized in that, when the image of described first picture and this second picture varies in size, adjust the focal length of those optical units so that this first real image is identical with the image size of this second real image.
13. the method for demonstration 3 D stereoscopic image according to claim 12, it is characterized in that, described first display panel and this second display panel show simultaneously, and the picture frame that this first display panel and this second display panel show simultaneously is in the time, and the fixed focal length of those optical units is constant.
14. the method for demonstration 3 D stereoscopic image according to claim 12, wherein the difference of this first depth of field and this second depth of field changes with the image difference in size of this first picture and this second picture.
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