CN103995402A - Liquid crystal slit grating, stereo display device and driving method of stereo display device - Google Patents
Liquid crystal slit grating, stereo display device and driving method of stereo display device Download PDFInfo
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- CN103995402A CN103995402A CN201310274976.3A CN201310274976A CN103995402A CN 103995402 A CN103995402 A CN 103995402A CN 201310274976 A CN201310274976 A CN 201310274976A CN 103995402 A CN103995402 A CN 103995402A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/30—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating
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Abstract
The invention discloses a liquid crystal slit grating which comprises a first polaroid, a first substrate, an upper electrode structure, a first alignment layer, a liquid crystal layer, a second alignment layer, a lower electrode structure, a second substrate and a second polaroid. The first polaroid, the first substrate, the upper electrode structure, the first alignment layer, the liquid crystal layer, the second alignment layer, the lower electrode structure, the second substrate and the second polaroid are sequentially arranged in a stacked mode. The lower electrode structure comprises at least two electrode layers, each electrode layer comprises a plurality of bar-type electrodes extending in the same direction, the bar-type electrodes in the electrode layers are parallel to one another and are arranged at intervals in an electrical insulation mode, and the bar-type electrodes in different electrode layers correspond to the gap between each other and arranged alternately, so that the projections of the bar-type electrodes on the second substrate are seamless projections, and the portions, corresponding to the projection areas, of the liquid crystal layer are completely covered. The liquid crystal slit grating can adjust parameters such as grating distance, the width of a light-transmitting slit and the position of the light-transmitting slit. The invention further provides a stereo display device with the liquid crystal slit grating, and a driving method of the stereo display device.
Description
[technical field]
The invention belongs to stereo display field, relate in particular to a kind of liquid crystal slit grating, also relate to a kind of 3 d display device and driving method thereof of applying liquid crystal slit grating.
[background technology]
People's left eye and right eye have spacing, cause the visual angle of two to have fine distinction, and the scenery that such difference can allow left eye and right eye observe respectively has parallax slightly, thereby forms stereo-picture in people's brain.
General 3 d display device is when watching, need to wear anaglyph spectacles, make originally just to wear the beholder of glasses (as spectacles, reading glasses etc.), in order to obtain viewing effect clearly, need to two pairs of glasses are overlapping, make stereo display watch comparatively inconvenience.In addition, normally fixing due to the width between two mirror pin of anaglyph spectacles, this may make the beholder of different shapes of face, can not obtain preferably and experience when wearing anaglyph spectacles.Therefore the bore hole stereo display technique that, does not need to wear anaglyph spectacles is more and more paid close attention to by people.
Autostereoscopic display apparatus cardinal principle is that grating is set before display panel, for example slit grating or cylindrical grating, and at least two width anaglyphs that described grating shows display panel offer respectively beholder's images of left and right eyes.
The slit grating of applying in 3 d display device is at present generally fixed grating, and the transmissive slit of slit grating and shading slit are fixed.This is fixedly slit grating when forming stereoscopic vision, and its viewing areas has strict restriction, surpasses the region of this restriction, can not form good stereoscopic vision, has greatly reduced user's stereoscopic vision and has experienced, and is unfavorable for applying of stereo display technique.
[summary of the invention]
The invention provides a kind of liquid crystal slit grating, as required shading slit and the transmissive slit of adjustable liquid crystal display slit grating.The present invention also provides a kind of 3 d display device and driving method thereof of applying above-mentioned liquid crystal slit grating simultaneously, thereby can adjust liquid crystal slit grating according to the difference of user's viewing location, makes user can access all the time good stereoscopic vision and experiences.
A kind of liquid crystal slit grating is provided, comprise the first polaroid being cascading, first substrate, upper electrode arrangement, the first both alignment layers, liquid crystal layer, the second both alignment layers, lower electrode arrangement, second substrate and the second polaroid, described lower electrode arrangement comprises at least two-layer electrode layer, and each electrode layer includes a plurality of strip electrodes that extend in the same direction, strip electrode in described at least two-layer electrode layer is parallel each other, interval and electric insulation setting, gap each other of strip electrode correspondence in Different electrodes layer and being mutually arranged alternately, make described a plurality of strip electrode be projected as seamless projection on described second substrate, the liquid crystal layer that this view field of complete covering is corresponding.
According to a preferred embodiment of the invention, strip electrode aligns with the adjacent side of the strip electrode of another layer of its neighbour arbitrarily.
According to a preferred embodiment of the invention, the adjacent side of the strip electrode of another layer of strip electrode and its neighbour partly overlaps arbitrarily.
According to a preferred embodiment of the invention, 1/10th to 1/3rd of the width that the overlapping region of the strip electrode of another layer of strip electrode and its neighbour is strip electrode arbitrarily.
According to a preferred embodiment of the invention, the width of the strip electrode in same electrode layer is identical, and in its same electrode layer, the spacing of adjacent strip electrode is identical.
According to a preferred embodiment of the invention, described lower electrode arrangement comprises two-layer electrode layer, the width of strip electrode equates arbitrarily, and the spacing between the adjacent bar electrode of same electrode layer equals the width of described strip electrode, the gap between corresponding another layer of strip electrode of strip electrode in same electrode layer and being mutually arranged alternately.
According to a preferred embodiment of the invention, described lower electrode arrangement comprises triple electrode layer, the width of strip electrode equates arbitrarily, and the spacing of the adjacent bar electrode of same electrode layer equals the twice of the width of described strip electrode, the gap between the strip electrode in corresponding other electrode layers of strip electrode in same layer and being mutually arranged alternately.
According to a preferred embodiment of the invention, by configuring the electric field between described strip electrode and upper electrode arrangement, to adjust the formed shading slit of liquid crystal slit grating and the parameter of transmissive slit.
The present invention also provides a kind of 3 d display device, comprising: display panel, for showing the left-eye image with parallax and the eye image of Same Scene; Liquid crystal slit grating, is arranged on the display surface of display panel, and described liquid crystal slit grating is the liquid crystal slit grating described in any one in claim 1-8; For different viewing location, regulate the parameter of described liquid crystal slit grating, thus the left-eye image and the eye image that make beholder's right and left eyes correspondence watch display panel to show.
The present invention also provides a kind of driving method of above-mentioned 3 d display device, and described driving method comprises: the left-eye image with parallax and the eye image of showing Display panel Same Scene; Determine user's stereos copic viewing position; Adjustable liquid crystal display slit grating shading slit and transmissive slit, thus the right and left eyes that makes beholder respectively correspondence watch left-eye image and eye image.
According to a preferred embodiment of the invention, the parameter of described liquid crystal slit grating at least comprises the width of pitch, transmissive slit, in the position of transmissive slit one.
According to a preferred embodiment of the invention, regulate the moving direction of position of described transmissive slit and the moving direction of beholder's viewing location consistent.
Compared to prior art, lower electrode arrangement comprises a plurality of electrode layers, each electrode layer comprises a plurality of strip electrodes that be arranged in parallel, strip electrode on Different electrodes layer can make up mutually gap each other, in the plane projection of second substrate, cover complete region, thereby photo-shield strip needn't be set between strip electrode, also can avoid the light leakage phenomena on shading slit or transmissive slit, further promote the quality of liquid crystal slit grating.
Adopt above-mentioned configuration and the 3 d display device of operation, when the demonstration image of 3 d display device or user's position change, can be by the pitch of adjustable liquid crystal display slit grating, the design parameters such as position of the width of transmissive slit, transmissive slit, can make user all the time in best viewing location, improve user's stereos copic viewing and experience, promote popularization and the application of stereo display technique.
[accompanying drawing explanation]
Fig. 1 is the structural representation of an embodiment of 3 d display device provided by the invention;
Fig. 2 is the another kind of working state schematic representation of an embodiment of 3 d display device provided by the invention;
Fig. 3 is the another kind of working state schematic representation of an embodiment of 3 d display device provided by the invention;
Fig. 4 is the structural representation of an embodiment of liquid crystal slit grating provided by the invention;
Fig. 5 is the planar structure schematic diagram of the part-structure of liquid crystal slit grating shown in Fig. 4;
Fig. 6 a-6d is four kinds of working state schematic representations that the liquid crystal slit grating shown in Fig. 5 forms;
Fig. 7 is the structural representation of the second embodiment of liquid crystal slit grating provided by the invention.
[embodiment]
Below in conjunction with drawings and Examples, the present invention is described in detail.
Refer to Fig. 1, the structural representation of the embodiment that Fig. 1 is 3 d display device provided by the invention, the controlled slit grating 102 that this 3 d display device 100 comprises display panel 101 and is arranged on display panel 101 display surfaces.
Display panel 101 is flat display apparatus, the left-eye image L with parallax and eye image R for generation of Same Scene, wherein left-eye image L and eye image R for example can be respectively bar image, and being presented on real panel 101 of mutually replacing in the horizontal direction.Display panel 101, such as being liquid crystal indicator, plasma display system, organic LED display device, el display device etc., will not enumerate herein.
Controlled slit grating 102 is slit grating, it can in checkly form shading slit and transmissive slit at its ad-hoc location, usually can form transmissive slit and the shading slit of alternating structure, thereby make beholder's left eye after transmissive slit, can only see the left-eye image L showing on display panel 101, right eye can only be seen the eye image R showing on display panel 101.Due to the image with parallax that left-eye image L and eye image R are Same Scene, the different anaglyph that beholder receives according to right and left eyes, produces stereoscopic vision.
When beholder moves certain distance relative to 3 d display device 100, for example, in first moment, in the position shown in the figure 1, in second moment, the relative display device 100 of beholder wherein portion moves a certain distance beholder, position as shown in Figure 2.Now, if controlled slit grating 102 keeps transmissive slit and the shading slit shown in Fig. 1, right and left eyes can not be seen corresponding left-eye image L and eye image R, cause VC, cannot form stereoscopic vision.Now by adjusting the transmissive slit of controlled slit grating 102 and the position of shading slit, for example, be adjusted into the position shown in Fig. 2, that is, the transmissive slit of controlled slit grating 102 moves portion position wherein with respect to display panel 101.Through adjusting, can make the beholder's of current location left eye still can only see the left-eye image L showing on display panel 101 by transmissive slit, right eye can only be seen the eye image R showing on display panel 101 simultaneously.Now, according to beholder's position (being the position of eyes), change, the shading slit of the controlled slit grating 102 of corresponding change and the position of transmissive slit, still can guarantee that beholder's right and left eyes sees left-eye image L and the eye image R with parallax, keeps good stereoscopic vision.
Same, if now beholder's eyes continue mobile position as shown in Figure 3, can continue to adjust the position of the transmissive slit of controlled slit grating 102 moves to the right shown in Fig. 2, still keep beholder's right and left eyes to see having left-eye image L and the eye image R of parallax, keep good stereoscopic vision, improve beholder's stereos copic viewing and experience.
As shown in the above, general, when the left-eye image L showing on display panel 101 and the position of eye image R do not change, through adjusting the transmissive slit of controlled slit grating 102 and the position of shading slit, can keep beholder to there is good stereoscopic vision always.Usually, the direction that the moving direction of transmissive slit moves with beholder's eyes is consistent, certainly, if the left-eye image L that display panel 101 shows and the generation of eye image R rearrange, also may make the moving direction of transmissive slit and moving direction that beholder's eyes move inconsistent, even contrary.Generally speaking, in concrete design, should consider the variation of left-and right-eye images, reasonably adjust transmissive slit and the shading slit location of controlled slit grating 102, watch left-eye image L and eye image R that respectively can be real-time with beholder's right and left eyes be as the criterion.
In addition, controlled slit grating 102 is except adjusting the position of transmissive slit and shading slit, the parameter such as grid joint, pitch, slit width that can also adjust transmissive slit and shading slit, watch left-eye image L and eye image R that respectively can be real-time with beholder's right and left eyes be as the criterion.
Controlled slit grating 102 can be liquid crystal slit grating, electrophoresis slit grating, the wetting slit grating of electricity etc., at this, does not do concrete restriction.For the present invention can be better described, the present invention also provides a kind of electricity controlled liquid crystal slit grating.
Liquid crystal slit grating can comprise two spaced electrode structures and liquid crystal layer.Wherein, liquid crystal layer is arranged between two electrode structures, and liquid crystal layer comprises a plurality of liquid crystal molecules.
In specific implementation process, by configuration, between these two electrode structures, form electric field, electric field makes liquid crystal molecule in predetermined ordered state, to form the liquid crystal slit grating with slit effect.
Refer to Fig. 4, the structural representation of the first embodiment that Fig. 4 is liquid crystal slit grating provided by the invention.In the present embodiment, liquid crystal slit grating 200 comprises the first polaroid 21, first substrate 22, upper electrode arrangement 23, the first both alignment layers 24, liquid crystal layer 25, the second both alignment layers 26, lower electrode arrangement 27, second substrate 28 and second polaroid 29 of stacked setting successively according to the order from top to bottom shown in Fig. 4, concrete structure and function are as described below.
First substrate 22 and second substrate 28 opposing parallel settings, upper electrode arrangement 23(also claims public electrode) be arranged at first substrate 22 inner sides, lower electrode arrangement 27(drive electrode) be arranged at second substrate 28 inner sides, thereby upper electrode arrangement upper electrode arrangement 23 and lower electrode arrangement 27 are oppositely arranged, between the two, can form automatically controlled electric field.
Liquid crystal layer 25 is arranged between upper electrode arrangement 23 and lower electrode arrangement 27, comprises rod shaped liquid crystal molecule 251 in it.
The first both alignment layers 24 is arranged between liquid crystal layer 25 and upper electrode arrangement 23, and the second both alignment layers 26 is arranged between liquid crystal layer 25 and lower electrode arrangement 27.The alignment direction of the first both alignment layers 24 and the second both alignment layers 26 is vertical or set according to actual needs specific angle (be for example less than 90 degree or be greater than 90 degree), thereby can according to actual needs, carry out alignment effect to the liquid crystal molecule 251 in liquid crystal layer 25.
Please refer to Fig. 5, Fig. 5 is the planar structure schematic diagram of upper electrode arrangement 23 and the lower electrode arrangement 27 of liquid crystal slit grating shown in Fig. 4 200.Wherein, upper electrode arrangement 23 can be plane-shape electrode, also can be made into according to the actual requirements other shapes, a plurality of subregion arranges etc., and the present embodiment be take upper electrode arrangement 23 and illustrated as plane-shape electrode.
Lower electrode arrangement 27 comprises at least two-layer electrode layer, the present embodiment illustrates to comprise two electrode layers, and two electrode layers are designated as respectively the first electrode layer 271 and the second electrode lay 272, wherein the first electrode layer 271 closes on liquid crystal layer 25 settings, and the second electrode lay 272 closes on second substrate 28 inner sides and arranges.
The first electrode layer 271 comprises a plurality of the first strip electrode 271a that be arranged in parallel, and a plurality of the first strip electrode 271a alternate intervals arrange and electrical isolation mutually, and along the first bearing of trend D1(, is all perpendicular to the direction of paper in Fig. 4) extension.
The second electrode lay 272 comprises a plurality of the second strip electrode 272a that be arranged in parallel, and a plurality of the second strip electrode 272a alternate intervals arrange and electrical isolation mutually, and along the first bearing of trend D1(, is all perpendicular to the direction of paper in Fig. 4) extension.And in the interval section of the position at the second strip electrode 272a place in a plurality of the first strip electrode 271a, thereby make a plurality of the first strip electrode 271a and a plurality of the second strip electrode 272a form complementary relation, the two is on the projecting plane of a complete gapless of formation (seamless) of second substrate 28, the liquid crystal layer 25 in can this region of complete covering.
General, the adjacent side of the first strip electrode 271a and adjacent the second strip electrode 272a is alignment structures, the electric signal so as far as possible reducing between the two disturbs, and can make again the liquid crystal layer 25 in the two this region of complete covering, and the light leakage phenomena while avoiding forming liquid crystal slit occurs.While is due to the restriction of manufacture craft, can also make edge that the first strip electrode 271a and adjacent the second strip electrode 272a are adjacent produce certain overlapping, for example overlapping region can be 1/10th to 1/3rd of article one shape electrode 271a or the second strip electrode 272a width.
Further, for making between the first strip electrode 271a of the first electrode layer 271 and the second strip electrode 272a of the second electrode lay 272 keeps electric insulation each other, between the first electrode layer 271 and the second electrode lay 272, be also provided with the insulation course 27 of planarization, fill the space between the first strip electrode 271a and the second strip electrode 272a.Insulation course 27 can be made by silicon nitride or monox or other transparent materials.
General, a plurality of the first strip electrode 271a have identical structure with a plurality of the second strip electrode 272a, are the rectangular bar-shaped electrode that length and width is identical, spacing is equal, thereby have more dirigibility in the process that forms shading slit and transmissive slit.For example in upper electrode arrangement 23, apply no-voltage V0 or reference voltage Vref, can periodically on adjacent some strip electrode 271a/272a, apply driving voltage V1, be used to form shading slit, on other strip electrode 271a/272a, apply no-voltage V0 or reference voltage Vref, be used to form transmissive slit.By change, form the number of the strip electrode 271a/272a of shading slit and transmissive slit, can change ratio and the width of shading slit and transmissive slit, thereby the grid of adjustable liquid crystal display slit grating joint and pitch, realize the controlled dynamic liquid crystal slit grating of electricity, and the method is hereinafter described in detail.The width of shading slit and transmissive slit and ratio need to be adjusted according to the parameter configuration of concrete 3 d display device, at this, do not repeat.
The first polaroid 21 is arranged on the outside of first substrate 22, i.e. a side relative with the first alignment film 24.The second polaroid 29 is arranged on the outside of second substrate 28, i.e. a side relative with the second alignment film 27.Certainly, in some follow-on design, the first polaroid 21 and the second polaroid 29 also can be arranged on the inner side of first substrate 22 and second substrate 28, at this, are not specifically limited.General, the polarization direction of the first polaroid 21 is identical with the alignment direction of the first both alignment layers 24; The polarization direction of the second polaroid 29 is identical with the alignment direction of the second both alignment layers 26.
In the embodiment shown in Fig. 4, Fig. 5, all extend along the second bearing of trend D2 the polarization direction of the alignment direction of the first both alignment layers 24, the first polaroid 21; All extend along the first bearing of trend D1 the polarization direction of the alignment direction of the second both alignment layers 26, the second polaroid 29.Preferably, the first bearing of trend D1 is mutually vertical with the second bearing of trend D2.The first both alignment layers 24 and the second both alignment layers 26 can be carried out orientation by modes such as friction matching or radiation orientations.
In liquid crystal layer 25, include liquid crystal molecule 251, under the alignment effect of the first both alignment layers 24 and the second both alignment layers 26, the aligned twisted structure that liquid crystal molecule 251 forms as shown in Figure 4.
Preferably, liquid crystal layer 25 can be polymer dispersed (PDLC) type liquid crystal layer, or to row curve induction phase (NCAP) type liquid crystal layer, or non-homogeneous macromolecule disperses (NPD-LCD) type liquid crystal layer.
Preferably, first substrate 22 and second substrate 28 can be by hard transparent materials such as clear glass, quartz, can be also to be made by soft transparent materials such as plastics, as long as light can be seen through, do not enumerate herein.
Preferably, upper electrode arrangement 23 and lower electrode arrangement 27 are transparent conductive material and make, and for example can be indium tin oxide (Indium Tin Oxide, ITO) or indium-zinc oxide (Indium Zinc Oxide, IZO), do not enumerate herein.
Below specifically introduce the implementation method of dynamic liquid crystal slit grating function.
For liquid crystal slit grating 200, for example, on a plurality of strip electrodes of being separated by one by one (whole the first strip electrode 271a), apply driving voltage V1 simultaneously, for example, in a plurality of strip electrodes (whole the second strip electrode 272a) of being separated by one by one in addition and upper electrode arrangement 23, apply identical no-voltage V0 or reference voltage Vref simultaneously.Between a plurality of first strip electrode 271a of being separated by one by one and upper electrode arrangement 23, produce one compared with highfield like this, the electric field driven in this region is arranged according to direction of an electric field liquid crystal molecule 251 major axis that should region; Between a plurality of second strip electrode 272a of being separated by one by one in addition and upper electrode arrangement 23, without electric field, liquid crystal molecule 251 is still arranged according to distortion mode.
When the polarization direction polarized light identical with the polarization direction of the second polaroid 29 propagated to first substrate 22 directions by second substrate 28, the bar-shaped zone corresponding to the first strip electrode 271a of being separated by one by one, polarized light can pass second substrate 28, liquid crystal molecule 251 does not change the polarization direction of polarized light simultaneously, polarized light cannot pass through the first polaroid 21, at first substrate 22 profile shading slits; At the bar-shaped zone corresponding to a plurality of the second strip electrode 272a of being separated by one by one in addition, polarized light is through second substrate 28, under the effect of the liquid crystal molecule 251 of aligned twisted, the polarization direction of polarized light is changed into the polarized light identical with the first polaroid 21 polarization directions gradually, polarized light can pass through the first polaroid 21, at the outer formation transmissive slit of first substrate 22.Shading slit and transmissive slit alternative arrangement, act on similar to common slit grating, thereby form the slit grating that shading slit as shown in Figure 6 a and transmissive slit ratio are 1:1.
The method that liquid crystal slit grating coordinates display panel to realize stereo display has been to be total to public domain, at this, does not repeat.
In addition, for example, on a plurality of strip electrodes of being separated by one by one (whole the second strip electrode 272a), apply driving voltage V1 simultaneously, for example, in a plurality of strip electrodes (whole the first strip electrode 271a) of being separated by one by one in addition and upper electrode arrangement 23, apply identical no-voltage V0 or reference voltage Vref simultaneously.Between a plurality of second strip electrode 272a of being separated by one by one and upper electrode arrangement 23, produce one compared with highfield like this, the electric field driven in this region is arranged according to direction of an electric field liquid crystal molecule 251 major axis that should region; A plurality of first strip electrode 271a of being separated by one by one in addition) without electric field, liquid crystal molecule 251 is still arranged according to distortion mode and between upper electrode arrangement 23.
According to above-mentioned identical optical principle, can form the slit grating that shading slit as shown in Figure 6 b and transmissive slit ratio are 1:1, its feature is, the slit grating shown in Fig. 6 b is equivalent to the displacement that the slit grating shown in Fig. 6 a has produced half pitch that moves right.By similar approach, regulate the position of the strip electrode that applies driving voltage, can also make shading slit and transmissive slit mobile any number of pitch to the left or to the right, at this, do not repeat.
Further, as shown in Fig. 6 c, can periodically be chosen in two adjacent strip electrodes (i.e. first strip electrode 271a and neighbour's a second strip electrode 272a) and apply driving voltage V1, at another adjacent strip electrode (i.e. a first strip electrode 271a or a second strip electrode 272a), apply reference voltage V0 or Vref, the width of the shading slit shown in Fig. 6 c forming like this and transmissive slit is than being the slit grating of 2:1.
Adopt and use the same method, by applying the quantity of the strip electrode of adjusting driving voltage V1, the width that can also produce shading slit as shown in figure Fig. 6 d and transmissive slit than for 3:1 or other arbitrary proportions slit grating, at this, do not repeat.
Adopt above-mentioned configuration and operation, in stereo display, there is very important application,, when the demonstration image of 3 d display device or user's position change, can be by regulating the shading slit of controlled slit grating 102 and the design parameter of transmissive slit, can make user all the time in best viewing location, improve user's stereos copic viewing and experience.
Simultaneously, adopt the formation of the method control liquid crystal slit grating 200 of dynamic scan, the display drive method that coordinates time division and space to cut apart, can improve the resolution of stereo display,, the resolution of stereo-picture can be consistent with the resolution of display, reduces the resolution loss of stereo-picture, greatly promotes stereo display quality and user and experience.
In sum, by adjusting, apply the first strip electrode 271a of driving voltage V1 and reference voltage Vref and number and the position of the second strip electrode 272a, can be according to actual stereo display needs, adjustable liquid crystal display slit grating 200 is as parameters such as grid joint, pitch, cycle, slit widths, better realize stereo display, make user all the time in best viewing location, the stereoscopic vision that has greatly promoted user is experienced.
Refer to Fig. 7, Fig. 7 is the structural representation of another embodiment of liquid crystal slit grating provided by the invention.Because the liquid crystal slit grating 400 of the present embodiment is similar with liquid crystal slit grating 200 structures in the first embodiment shown in Fig. 4, Fig. 7 only indicates and illustrates its main difference part.Compare with the liquid crystal slit grating 200 shown in Fig. 4, liquid crystal slit grating 400 main difference parts are:
Lower electrode arrangement 47 comprises the triple electrode layer of stacked setting, is designated as respectively the first electrode layer 471, the second electrode lay 472 and third electrode layer 473.Wherein the first electrode layer 471 closes on liquid crystal layer 45 settings, and third electrode layer 473 closes on second substrate 48 inner sides and arranges, and the second electrode lay 472 is arranged between the first electrode layer 471 and third electrode layer 473.Further, for making to keep electric insulation between the first electrode layer 471, the second electrode lay 472 and third electrode layer 473, between the first electrode layer 471 and the second electrode lay 472, be provided with the first insulation course 474 of planarization, between the second electrode lay 472 and third electrode layer 473, be provided with the second insulation course 475 of planarization.The first insulation course 474 and the second insulation course 475 can be made by silicon nitride or monox or other transparent materials.
Same, the first electrode layer 471 comprises a plurality of parallel and spaced the first strip electrode 471a, the second electrode lay 472 comprises a plurality of parallel and spaced the second strip electrode 472a, and third electrode layer 473 comprises a plurality of parallel and spaced the 3rd strip electrode 473a.
General, the first strip electrode 471a, the second strip electrode 472a, the 3rd strip electrode 473a have identical width, and extend in the same direction.And two strip electrode width of spacing between the first strip electrode 471a of arbitrary neighborhood or between the second strip electrode 472a or between the 3rd strip electrode 473a, and the second strip electrode 472a and the 3rd strip electrode 473a be the move right distance of a strip electrode width and two strip electrodes of relative the first strip electrode 471a respectively, make its justified margin, thereby make up each other gap between electrode and do not cause each other overlapping simultaneously, avoid the light leakage phenomena when forming shading slit or transmissive slit.
Be understandable that, lower electrode arrangement 47 can also be divided into the similar said structures of multilayer such as four layers, five layers as required, unrestricted at this.
The driving method of liquid crystal slit grating 400 is similar to the driving method of above-mentioned liquid crystal lens 200, does not repeat them here.
With liquid crystal slit grating 200 function classes shown in Fig. 4 seemingly, the first strip electrode 471a, the second strip electrode 472a, the 3rd strip electrode 473a have same or analogous structure and parameter, be arranged in parallel each other, and adjacent side alignment or overlap.On the layer in different, the first strip electrode 471a, the second strip electrode 472a, the 3rd strip electrode 473a can make up mutually gap each other, in plane projection, cover complete region, thereby needn't be at the first strip electrode 471a, the second strip electrode 472a, between the 3rd strip electrode 473a, photo-shield strip is set, also can avoid the light leakage phenomena on shading slit or transmissive slit, simultaneously, the parameters such as the grid joint that the same or analogous structure and parameter of three is adjustable liquid crystal display slit grating 400 and pitch provide more operating space, the quality that further promotes liquid crystal slit grating and be mated the 3 d display device of use.
In sum, the embodiment of the present invention is by the bottom electrode of liquid crystal slit grating 200,400 27,47 is set to sandwich construction, and between multi-layered electrode mutually to it or partly overlap, thereby make the liquid crystal layer 25,45 of the covering region that bottom electrode is complete.By regulating strip electrode quantity and the position of driving voltage V1 and reference voltage Vref, according to actual stereo display needs, the parameters such as grid joint, pitch, the seam of adjustable liquid crystal display slit grating 200,400 are wide, position, better realize stereo display, make user all the time in best viewing location, the stereoscopic vision that has greatly promoted user is experienced.
In the above-described embodiments, only the present invention has been carried out to exemplary description, but those skilled in the art can carry out various modifications to the present invention without departing from the spirit and scope of the present invention after reading present patent application.
Claims (12)
1. a liquid crystal slit grating, comprise the first polaroid being cascading, first substrate, upper electrode arrangement, the first both alignment layers, liquid crystal layer, the second both alignment layers, lower electrode arrangement, second substrate and the second polaroid, it is characterized in that, described lower electrode arrangement comprises at least two-layer electrode layer, and each electrode layer includes a plurality of strip electrodes that extend in the same direction, strip electrode in described at least two-layer electrode layer is parallel each other, interval and electric insulation setting, gap each other of strip electrode correspondence in Different electrodes layer and being mutually arranged alternately, make described a plurality of strip electrode be projected as seamless projection on described second substrate, the liquid crystal layer that this view field of complete covering is corresponding.
2. liquid crystal slit grating as claimed in claim 1, is characterized in that, strip electrode aligns with the adjacent side of the strip electrode of another layer of its neighbour arbitrarily.
3. liquid crystal slit grating as claimed in claim 1, is characterized in that, the adjacent side of the strip electrode of another layer of strip electrode and its neighbour partly overlaps arbitrarily.
4. liquid crystal slit grating as claimed in claim 3, is characterized in that, 1/10th to 1/3rd of the width that the overlapping region of the strip electrode of another layer of strip electrode and its neighbour is strip electrode arbitrarily.
5. liquid crystal slit grating as claimed in claim 1, is characterized in that, the width of the strip electrode in same electrode layer is identical, and in its same electrode layer, the spacing of adjacent strip electrode is identical.
6. liquid crystal slit grating as claimed in claim 1, it is characterized in that, described lower electrode arrangement comprises two-layer electrode layer, the width of strip electrode equates arbitrarily, and the spacing between the adjacent bar electrode of same electrode layer equals the width of described strip electrode, the gap between corresponding another layer of strip electrode of strip electrode in same electrode layer and being mutually arranged alternately.
7. liquid crystal slit grating as claimed in claim 1, it is characterized in that, described lower electrode arrangement comprises triple electrode layer, the width of strip electrode equates arbitrarily, and the spacing of the adjacent bar electrode of same electrode layer equals the twice of the width of described strip electrode, the gap between the strip electrode in corresponding other electrode layers of strip electrode in same layer and being mutually arranged alternately.
8. liquid crystal slit grating as claimed in claim 1, is characterized in that, by configuring the electric field between described strip electrode and upper electrode arrangement, to adjust the formed shading slit of liquid crystal slit grating and the parameter of transmissive slit.
9. a 3 d display device, comprising:
Display panel, for showing the left-eye image with parallax and the eye image of Same Scene;
Liquid crystal slit grating, is arranged on the display surface of display panel, and described liquid crystal slit grating is the liquid crystal slit grating described in any one in claim 1-8;
For different viewing location, regulate the parameter of described liquid crystal slit grating, thus the left-eye image and the eye image that make beholder's right and left eyes correspondence watch display panel to show.
10. a driving method for 3 d display device, adopts the 3 d display device of described driving method to comprise:
Display panel, for showing the left-eye image with parallax and the eye image of Same Scene;
Liquid crystal slit grating, described liquid crystal slit grating is the liquid crystal slit grating described in any one in claim 1-8;
Described driving method comprises:
Display panel shows the left-eye image with parallax and the eye image of Same Scene;
Determine user's stereos copic viewing position;
Adjustable liquid crystal display slit grating shading slit and transmissive slit, thus the right and left eyes that makes beholder respectively correspondence watch left-eye image and eye image.
The driving method of 11. described 3 d display devices as claimed in claim 10, is characterized in that, the parameter of described liquid crystal slit grating at least comprises the width of pitch, transmissive slit, in the position of transmissive slit one.
The driving method of 12. described 3 d display devices as claimed in claim 11, is characterized in that, regulates the moving direction of position of described transmissive slit and the moving direction of beholder's viewing location consistent.
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| CN201310274976.3A CN103995402A (en) | 2013-07-02 | 2013-07-02 | Liquid crystal slit grating, stereo display device and driving method of stereo display device |
| PCT/CN2014/082815 WO2015000448A1 (en) | 2013-07-02 | 2014-07-23 | Liquid crystal slit grating, 3d display device, and driving method thereof |
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