CN103792753A - Glasses-free three-dimensional display device and its liquid crystal lens - Google Patents
Glasses-free three-dimensional display device and its liquid crystal lens Download PDFInfo
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- CN103792753A CN103792753A CN201210429774.7A CN201210429774A CN103792753A CN 103792753 A CN103792753 A CN 103792753A CN 201210429774 A CN201210429774 A CN 201210429774A CN 103792753 A CN103792753 A CN 103792753A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 89
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 30
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000005684 electric field Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000000149 penetrating effect Effects 0.000 description 4
- 210000005252 bulbus oculi Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009342 intercropping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
A naked eye type stereoscopic display device and a liquid crystal lens thereof are provided. The display panel includes a plurality of pixels. The pixels are arranged in a matrix pattern. The liquid crystal lens layer is arranged on the display panel and comprises a plurality of liquid crystal lenses. Each liquid crystal lens corresponds to at least one pixel. Each liquid crystal lens forms an equivalent asymmetric lens according to the control of a plurality of different driving voltages, and a plurality of viewpoints are formed at one viewpoint end after light rays pass through the equivalent asymmetric lens.
Description
Technical field
The present invention relates to a kind of display device, particularly a kind of autostereoscopic display apparatus with liquid crystal lens.
Background technology
In current display technique, stereo display technique can roughly be divided into observer need wear the hyperphoria with fixed eyeballs mirror (stereoscopic) that particular design glasses watch and the bore hole formula (auto-stereoscopic) that directly bore hole is watched.Wherein hyperphoria with fixed eyeballs mirror stereo display technique is full-fledged, and extensively uses as in some specific use such as military affairs simulations or large-scale amusement, but hyperphoria with fixed eyeballs mirror stereo display technique is not good because of its convenience and comfortableness, makes this type of technology be difficult for popularizing.Therefore, bore hole formula stereo display technique develops and becomes new trend gradually.
Bore hole formula stereo display technique has been developed to the stereo display technique of multiple viewing angle (multi-view) at present.The advantage of the stereo display technique of multiple viewing angle is the fancy space that audience is larger can be provided or view and admire degree of freedom.In general the means that, are mainly used at present to reach multiple viewing angle have grating (Barrier) and lens pillar (Lenticular lens).
But, can corresponding multiple pixels due to every single grating or lens pillar, no matter be therefore to use grating or lens pillar, when reached viewpoint number is higher, the resolution of stereopsis will be lower.As shown in Figure 1, in the time of the pixel P1 to P4 of the corresponding display panel PX of lens pillar LL, can produce vision point B1 to VB4, the horizontal resolution of stereopsis also reduces to 1/4th simultaneously.Table one is the relation of existing viewpoint number and resolution.
Table one
| Frequency (Hz) | The number of pixel | Radius | Angle of inclination | Viewpoint number | Resolution |
| 60 | 1 | ∞ | 0 | 1 | 1920 |
| 60 | 2 | 2.65 | 0 | 2 | 960 |
| 60 | 3 | 2.68 | 0 | 3 | 640 |
And for traditional autostereoscopic display, the distance of viewing and admiring between audience and three-dimensional display must be at the very start to fixed, the display quality of being seen to maintain audience.This restriction has but caused very large inconvenience to audience.In addition, traditional autostereoscopic display requires very strict for the contraposition between its optical element and display (alignment), for making, and a major challenge especially.
Summary of the invention
The disclosed liquid crystal lens of the present invention, comprises a first substrate, a second substrate, multiple control electrode, an electrode layer and a liquid crystal layer.First substrate is relative with second substrate to be configured.These control electrodes are arranged on first substrate.Electrode layer is arranged on second substrate.Liquid crystal layer is arranged between first substrate and electrode layer.In the time that these control electrodes voltage is to each other different, liquid crystal lens forms an equivalent non-sym lens, and light is passed through after equivalent non-sym lens, forms multiple viewpoints at a viewpoint end.
According to the disclosed autostereoscopic display apparatus of the invention described above, comprise a display panel and a liquid crystal lens layer.Display panel comprises multiple pixels.These Pixel arrangements become a matrix pattern.Liquid crystal lens layer is arranged on display panel, and comprises multiple liquid crystal lens.The corresponding at least one pixel of each liquid crystal lens.Each this liquid crystal lens forms an equivalent non-sym lens according to the control of multiple different driving voltages simultaneously.Light passes through after equivalent non-sym lens, forms multiple viewpoints at a viewpoint end.
In one embodiment, between the optical axis of above-mentioned equivalent non-sym lens and Y-axis, there is a pitch angle.
In one embodiment, above-mentioned pitch angle changes along with the change in voltage between these control electrodes and electrode layer.
In one embodiment, a radius-of-curvature of above-mentioned equivalent non-sym lens changes along with the distance between autostereoscopic display apparatus and viewpoint end.
In one embodiment, in the time that the switching frequency of the voltage between above-mentioned control electrode and this electrode layer increases, the quantity of these viewpoints increases.
One integral multiple of the width that in one embodiment, the distance between two adjacent control electrodes is each control electrode.
By the eccentric design of above-mentioned liquid crystal lens, can avoid the viewpoint number of autostereoscopic display apparatus to increase the problem of the institute's stereopsis resolution that causes decline.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing 3 d display device;
Fig. 2 A to Fig. 2 B be according to an embodiment of the invention 3 d display device at the structural representation of surrounding time point;
Fig. 3 is according to the enlarged diagram of the 3 d display device of Fig. 2 A;
Fig. 4 A is the sectional structure chart of single liquid crystal lens according to an embodiment of the invention;
Fig. 4 B is the stravismus structural drawing according to the single liquid crystal lens of Fig. 4 A;
Fig. 4 C is the sectional structure chart of the single liquid crystal lens of Fig. 4 A while applying different voltage at the same time.
Wherein, Reference numeral
10 liquid crystal lens layers
100 liquid crystal lens
110 first substrates
111 second substrates
120a, 120b control electrode
121 first electrode layers
140 liquid crystal layers
AX optical axis
D distance
DV1, DV2 voltage
EN1 equivalence non-sym lens
EN2 equivalent symmetrical lens
L1, L2, L3, L4 image light
PX display panel
P1, P2 pixel
Q central point
VB1, VB2, VB3, VB4 viewpoint
W1, W2, W3 length
θ pitch angle
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present invention and principle of work are described in detail:
Referring to Fig. 2 A and Fig. 2 B, its be according to an embodiment of the invention autostereoscopic display apparatus at the structural representation of surrounding time point.The disclosed autostereoscopic display apparatus according to the present invention, can provide multiple vision areas at a viewpoint end, and each vision area has a corresponding viewpoint.The visual angle difference of each viewpoint.The number of viewpoint represents that the image information of the picture that has corresponding number is as the source of stereopsis image content.
In the present embodiment, the plurality of viewpoint (vision area) is to be positioned in a plane parallel with three-dimensional display, but the invention is not restricted to this.The form of the plurality of vision area, such as width, position, arrangement mode and with the distance of three-dimensional display only in order to illustrate, its arrangement mode is not as long as continuously, be restricted to a straight line or circular arc.The present embodiment is using a straight line as example.The distance B of viewpoint end and three-dimensional display can represent the distance of viewing and admiring of an audience and three-dimensional display.
3 d display device comprises a display panel PX and a liquid crystal lens layer 10.Liquid crystal lens layer 10 is arranged between display panel PX and viewpoint end, that is is arranged on display panel PX.Display panel PX comprises multiple pixels (pixel), and such as but not limited to pixel P1 and P2, the plurality of Pixel arrangement forms a matrix pattern.
Liquid crystal lens layer 10 comprises multiple liquid crystal lens unit.Liquid crystal lens unary system driven according to the voltage that applies and function on as lens.The image light that penetrates liquid crystal lens unit can selectively form a bidimensional image or a 3-dimensional image according to the voltage swing that is applied to liquid crystal lens layer 10.
Do not applying voltage or applying under the state of an enough voltage, the Liquid Crystal Molecules Alignment direction of liquid crystal lens unit is all identical, and refractive index is all the same, and therefore a focus function, only as a transport layer in function, is not had in liquid crystal lens unit.The light that display panel PX produces will directly penetrate liquid crystal lens layer, form the image of a two dimension.On the other hand, when applying under the state of multiple suitable voltage to liquid crystal lens jacket, the voltage applying forms asymmetric electric field by multi-electrode, can control by this direction of liquid crystal molecule and deviation light.
By the variation of refractive index in liquid crystal layer, liquid crystal lens unit can equivalence become the effect of an equivalent asymmetrical lens pillar.Liquid crystal lens unit can be divided into multiple liquid crystal lens 100 on column direction.Corresponding at least one pixel of each liquid crystal lens 100.Structure about liquid crystal lens 100 will be described below.
Please refer to shown in Fig. 4 A and Fig. 4 B, it is respectively sectional structure chart and the oblique view of single liquid crystal lens according to an embodiment of the invention.Liquid crystal lens 100 comprises a first substrate 110, a second substrate 111, multiple control electrode (such as but not limited to control electrode 120a and 120b), an electrode layer 121 and a liquid crystal layer 140.First substrate 110 is oppositely arranged with second substrate 111. Control electrode 120a and 120b are arranged on first substrate 110.Electrode layer 121 is arranged on second substrate 111.140 of liquid crystal layers are arranged between first substrate 110 and electrode layer 121.Length W1 between control electrode 120a and 120b is the twice of the length W3 of control electrode 120a and 120b.The summation of length W1 and two length W3 is the length W2 of a liquid crystal lens.But above-described embodiment is not restriction of the present invention, that is relation between length W1 and W3 can design according to the quantity of control electrode.
Voltage DV1 between control electrode 120a and electrode layer 121 produces a corresponding electric field between control electrode 120a and electrode layer 121.This electric field controls is near the liquid crystal deflecting element of control electrode 120a end.Voltage DV2 between control electrode 120b and electrode layer 121 produces a corresponding electric field between control electrode 120b and electrode layer 121.This electric field controls is near the liquid crystal deflecting element of control electrode 120b end.
In the time that voltage DV1 equals voltage DV2, control electrode 120a is identical with the electric field between control electrode 120b and electrode layer 121 with the electric field between electrode layer 121, makes liquid crystal lens 100 identical near the Liquid Crystal Molecules Alignment of control electrode 120a and 120b.Now, liquid crystal lens 100 can equivalence become to have an equivalent symmetric lens EN2 of a radius-of-curvature, as shown in Figure 3.The parallel Y-axis of optical axis of this equivalent symmetric lens EN2.
In the time that voltage DV1 is not equal to voltage DV2, control electrode 120a is different from the electric field between control electrode 120b and electrode layer 121 with the electric field between electrode layer 121, make liquid crystal lens 100 also different near the Liquid Crystal Molecules Alignment of control electrode 120a and 120b, as Fig. 4 C.Now, change along with the deflection of liquid crystal molecule will make the refractive index of liquid crystal lens 100 produce, liquid crystal lens 100 can equivalence becomes to have an equivalent non-sym lens EN1 of a radius-of-curvature and a tiltangleθ, as shown in Figure 3.This tiltangleθ is the angle between optical axis AX and the Y-axis of equivalent non-sym lens EN1, that is equivalent symmetrical lens EN2 is with the angle of its central point Q rotation.
In the time that voltage DV1 is greater than voltage DV2, when light (image light L1, L2, L3 or L4) passes through non-equivalent liquid crystal lens, will be towards control electrode 120b end deviation.In the time that voltage DV1 is less than voltage DV2, light, will be towards control electrode 120a end deviation in the time passing through non-equivalent liquid crystal lens.The running that the above-mentioned variations in refractive index of utilizing liquid crystal lens 100 is controlled light path is as follows.
In one embodiment, 3 d display device set running at 120 hertz (Hz), and using left vision effect as explanation, as shown in Figure 2 A and 2 B.In this embodiment, corresponding two the pixel P1 of liquid crystal lens 100 and P2.Because liquid crystal lens 100 has eccentric characteristic, the image light that therefore pixel P1 and P2 send, such as but not limited to image light L1 to L4, via will producing different refraction effects after liquid crystal lens 100.
In the time of 1/120 second, image light L1 will be projected to the position of vision point B1 after penetrating liquid crystal lens 100, and image light L3 will be projected to the position of vision point B3 after penetrating liquid crystal lens 100, as shown in Figure 2 A.Then, in the time of 2/120 second, image light L2 will be projected to the position of vision point B2 after penetrating liquid crystal lens 100, and image light L4 will be projected to the position of vision point B4 after penetrating liquid crystal lens 100, as shown in Figure 2 B.Running afterwards by that analogy.
But, the above embodiments are not restriction of the present invention, enforcement category of the present invention also can be applicable to the frequency by adjusting 3 d display device running, reach the in the situation that of equal resolution, improve the object of viewpoint number, or in the situation that same viewpoint is counted, put forward high-resolution object, as shown in Table 2.
Table two
| Frequency (Hz) | The number of pixel | Radius | Angle of inclination | Viewpoint number | Resolution |
| 120 | 1 | 0.152 | ±1.09 | 2 | 1920 |
| 120 | 2 | 2.12 | ±1.09 | 4 | 960 |
| 120 | 3 | 2.14 | ±1.09 | 6 | 640 |
| 180 | 1 | 0.146 | ±2.16 | 3 | 1920 |
| 180 | 2 | 1.42 | ±2.16 | 6 | 960 |
| 180 | 3 | 1.44 | ±2.16 | 9 | 640 |
In addition, 3 d display device of the present invention can be in the switching of bidimensional image and 3-dimensional image intercropping demonstration.The radius of liquid crystal lens 100 can be adjusted automatically by the size of the distance B that pick-up unit detects that configures in 3 d display device.
In sum, the disclosed 3 d display device according to the present invention, utilizes the liquid crystal layer of display panel itself to design equivalent asymmetrical liquid crystal lens, to replace the optical elements such as grating or symmetrical lens pillar.By eccentric position, pitch angle and the radius-of-curvature of design liquid crystal lens, the number of the corresponding pixel of the single liquid crystal lens of capable of regulating.By designing the relation between the number of equivalent asymmetrical liquid crystal lens and pixel, can improve the viewpoint number that 3 d display device forms the resolution that maintains 3-dimensional image.In addition,, by detecting the distance between audience and 3 d display device, automatically to adjust the radius of liquid crystal lens, can avoid the restricted problem of distance of viewing and admiring between audience and 3 d display device.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (12)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210429774.7A CN103792753A (en) | 2012-10-31 | 2012-10-31 | Glasses-free three-dimensional display device and its liquid crystal lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210429774.7A CN103792753A (en) | 2012-10-31 | 2012-10-31 | Glasses-free three-dimensional display device and its liquid crystal lens |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015007171A1 (en) * | 2013-07-19 | 2015-01-22 | 华为技术有限公司 | Stereo imaging apparatus, method, and display |
| CN105116647A (en) * | 2015-08-11 | 2015-12-02 | 江西合力泰科技有限公司 | Dual-box naked-eye 3D (three-dimensional) LCD (Liquid Crystal Display) |
| CN105629622A (en) * | 2016-04-07 | 2016-06-01 | 京东方科技集团股份有限公司 | Display module and control method thereof and display device |
| CN106094231A (en) * | 2016-08-25 | 2016-11-09 | 京东方科技集团股份有限公司 | Display base plate and display device |
| CN107505713A (en) * | 2017-08-14 | 2017-12-22 | 友达光电股份有限公司 | Display apparatus and display method |
| WO2021102909A1 (en) * | 2019-11-29 | 2021-06-03 | 京东方科技集团股份有限公司 | Display device and driving method thereof |
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| WO2004068190A2 (en) * | 2003-01-29 | 2004-08-12 | Mems Optical Inc. | Autostereoscopic (3-d) display |
| CN101424808A (en) * | 2007-11-02 | 2009-05-06 | 乐金显示有限公司 | Stereoscopic display device with liquid crystal driven by electricity |
| WO2011114076A1 (en) * | 2010-03-19 | 2011-09-22 | Evosens | Optical variation device, optical assembly and method for manufacturing such a device |
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2012
- 2012-10-31 CN CN201210429774.7A patent/CN103792753A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2004068190A2 (en) * | 2003-01-29 | 2004-08-12 | Mems Optical Inc. | Autostereoscopic (3-d) display |
| CN101424808A (en) * | 2007-11-02 | 2009-05-06 | 乐金显示有限公司 | Stereoscopic display device with liquid crystal driven by electricity |
| WO2011114076A1 (en) * | 2010-03-19 | 2011-09-22 | Evosens | Optical variation device, optical assembly and method for manufacturing such a device |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015007171A1 (en) * | 2013-07-19 | 2015-01-22 | 华为技术有限公司 | Stereo imaging apparatus, method, and display |
| CN105116647A (en) * | 2015-08-11 | 2015-12-02 | 江西合力泰科技有限公司 | Dual-box naked-eye 3D (three-dimensional) LCD (Liquid Crystal Display) |
| CN105629622B (en) * | 2016-04-07 | 2019-01-04 | 京东方科技集团股份有限公司 | A kind of display module and its control method, display device |
| CN105629622A (en) * | 2016-04-07 | 2016-06-01 | 京东方科技集团股份有限公司 | Display module and control method thereof and display device |
| WO2017173792A1 (en) * | 2016-04-07 | 2017-10-12 | 京东方科技集团股份有限公司 | Display module and control method therefor, display device |
| US10274740B2 (en) | 2016-04-07 | 2019-04-30 | Boe Technology Group Co., Ltd. | Display module comprising liquid crystal lens, method for controlling display module, and display device |
| CN106094231A (en) * | 2016-08-25 | 2016-11-09 | 京东方科技集团股份有限公司 | Display base plate and display device |
| CN107505713A (en) * | 2017-08-14 | 2017-12-22 | 友达光电股份有限公司 | Display apparatus and display method |
| CN107505713B (en) * | 2017-08-14 | 2019-10-18 | 友达光电股份有限公司 | Display apparatus and display method |
| WO2021102909A1 (en) * | 2019-11-29 | 2021-06-03 | 京东方科技集团股份有限公司 | Display device and driving method thereof |
| CN113366382A (en) * | 2019-11-29 | 2021-09-07 | 京东方科技集团股份有限公司 | Display device and driving method thereof |
| EP4067989A4 (en) * | 2019-11-29 | 2022-11-09 | BOE Technology Group Co., Ltd. | Display device and driving method thereof |
| US11818330B2 (en) | 2019-11-29 | 2023-11-14 | Boe Technology Group Co., Ltd. | Display device and driving method thereof |
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Application publication date: 20140514 |