CN102436101A - Liquid crystal lens grating and three-dimensional display device - Google Patents
Liquid crystal lens grating and three-dimensional display device Download PDFInfo
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- CN102436101A CN102436101A CN2011104417462A CN201110441746A CN102436101A CN 102436101 A CN102436101 A CN 102436101A CN 2011104417462 A CN2011104417462 A CN 2011104417462A CN 201110441746 A CN201110441746 A CN 201110441746A CN 102436101 A CN102436101 A CN 102436101A
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Abstract
The invention relates to a three-dimensional display device, which comprises a display panel and a light ray guide panel, wherein the light ray guide panel is arranged on the display surface of the display panel; the light ray guide panel is used for guiding parallactic image light rays displayed by the display panel to a predetermined visual field spatial position to realize three-dimensional display; the light ray guide panel is an electrically-controllable lens grating which forms a plurality of lens gratings in different extending directions under electric control; and the distances between the plurality of formed lens gratings and the display panel are consistent. The three-dimensional display device has the advantages of capability of forming three-dimensional display pictures in multiple directions and consistent watching distance.
Description
Technical field
The present invention relates to liquid crystal lens grating and stereo display field, relate in particular to liquid crystal lens grating and the 3 d display device of using this liquid crystal lens grating that a kind of a plurality of direction all forms lenticulation.
Background technology
People's left eye and right eye have spacing, cause two visual angle to have fine distinction, and the scenery that such difference can let left eye and right eye observe respectively has parallax slightly, thereby in people's brain, forms stereo-picture.
General 3 d display device is when watching; Need wear anaglyph spectacles, the feasible beholder who just wore glasses (like spectacles, reading glasses etc.) originally is in order to obtain viewing effect clearly; Need two pairs of glasses are overlapping, make stereo display watch comparatively inconvenience.In addition, because the width between the two mirror pin of anaglyph spectacles is normally fixing, this possibly make the beholder of different shapes of face can not obtain preferable experience when wearing anaglyph spectacles.Therefore, the bore hole stereo display technique that need not wear anaglyph spectacles is more and more paid close attention to by people.
Along with the continuous development of liquid crystal technology, liquid crystal material is widely used in various fields.
Liquid crystal lens has widely to be used, and wherein a kind of typical application be that three-dimensional (3D) shows and use, and the liquid crystal lens grating cooperates display device, with the right and left eyes of the parallax picture beam split oriented users of display device demonstration, thereby makes the user form stereoscopic vision.Can also realize simultaneously the handoff functionality of plane/stereo (2D/3D) picture, user-friendly.
Current liquid crystal lens grating only can form the lens of a direction; Its corresponding 3 d display device also can only form the stereo display effect in one direction; When display device is rotated; The beholder can not obtain good stereoscopic vision and experience, and the application that this has limited stereo display has greatly reduced beholder's stereoscopic vision and experienced.
Summary of the invention
The technical matters that the present invention solved provides a kind of 3 d display device; Comprise display panel and light guide panel; Said light guide panel is arranged on the display surface of said display panel; Said light guide panel is used for the anaglyph light of the demonstration of said display panel is directed to predetermined locus, visual field, thereby realizes stereo display, and said light guide panel is electric controlled lenticulation; It forms down the different multiple lenticulation of bearing of trend automatically controlled, and the said multiple lenticulation that forms is consistent with distance between the display panel.
According to a preferred embodiment of the invention; Said light guide panel is the liquid crystal lens grating; It comprises first substrate, drive electrode structure, first both alignment layers, liquid crystal layer, second both alignment layers, public electrode structure and second substrate that is cascading; Wherein said drive electrode structure comprises the drive electrode layer of a plurality of range upon range of settings, through forming the different lenticulation of multiple bearing of trend forming corresponding electric field between said drive electrode layer and the said public electrode structure respectively.
According to a preferred embodiment of the invention, mutually insulated setting between the drive electrode layer of said a plurality of range upon range of settings.
According to a preferred embodiment of the invention, said arbitrary drive electrode layer bar shaped drive electrode of comprising a plurality of spaces and being arranged in parallel with each other.
According to a preferred embodiment of the invention, the width of a plurality of bar shaped drive electrodes in the said same drive electrode layer equates, and the interval between the adjacent arbitrarily bar shaped drive electrode equates.
According to a preferred embodiment of the invention, the interval between the adjacent arbitrarily bar shaped drive electrode equals the width of a strip electrode.
According to a preferred embodiment of the invention, the quantity of said drive electrode layer is two, and the bearing of trend that said two drive electrode layer drive the lenticulation that forms is vertical each other.
According to a preferred embodiment of the invention, said display panel is display panels or Plasmia indicating panel or organic electroluminescence display panel.
A kind of liquid crystal lens grating; Comprise: first substrate that is cascading, drive electrode structure, first both alignment layers, liquid crystal layer, second both alignment layers, public electrode structure and second substrate; Wherein said drive electrode structure comprises the drive electrode layer of a plurality of range upon range of settings, through forming the different lenticulation of multiple bearing of trend forming corresponding electric field between said drive electrode layer and the said public electrode structure respectively.
According to a preferred embodiment of the invention; Mutually insulated setting between the drive electrode layer of said a plurality of range upon range of settings; And the bar shaped drive electrode that said arbitrary drive electrode layer comprises a plurality of spaces and is arranged in parallel with each other; The width of a plurality of bar shaped drive electrodes in the said same drive electrode layer equates, and the interval between the adjacent arbitrarily bar shaped drive electrode equates.
Compared to prior art, the light guide panel of 3 d display device of the present invention adopts the liquid crystal lens grating, and the drive electrode structure of liquid crystal lens grating is arranged to bilayer or sandwich construction, for example, and first drive electrode layer and second drive electrode layer.Wherein the strip electrode bearing of trend of first drive electrode layer is different from second drive electrode layer; Just can on first drive electrode layer and second drive electrode layer, apply driving voltage respectively through simple driving like this; To form the lenticulation of both direction respectively, can realize bore hole stereo display thereby satisfy on both direction.And because the distance of the lenticulation distance display panel of both direction is consistent; Thereby make the best viewing location of stereo display of both direction identical; In the switching of the direction of carrying out stereo display; Do not need the beholder shift position, just can obtain identical bore hole stereoscopic vision and experience.3 d display device not only can be realized freely switching between the plane/stereo demonstration, can also realize two, and very the stereo display of a plurality of directions of person is switched, and has satisfied the demand of watching of user's different visual angles.
Description of drawings
Fig. 1 is the structural representation of an embodiment of invention 3 d display device.
Fig. 2 is the cross-sectional view of 3 d display device shown in Figure 1.
Fig. 3 is the part-structure schematic perspective view of drive electrode structure shown in Figure 2.
Fig. 4 is the principle of work synoptic diagram of light guide panel shown in Figure 2.
Fig. 5 is the synoptic diagram of the lenticulation of light guide panel formation shown in Figure 4.
Fig. 6 is the principle of work synoptic diagram when turning 90 degrees that revolves of light guide panel shown in Figure 2.
Fig. 7 is the synoptic diagram of the lenticulation of light guide panel formation shown in Figure 6.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Seeing also Fig. 1, is the structural representation of an embodiment of 3 d display device of the present invention.This 3 d display device 100 provides parallax display frame to space specific direction, and it comprises light guide panel 1, display panel 2.
As shown in Figure 1; After the modulation of the light that display panel 2 sends through light guide panel 2; The light of the left-eye image L that display panel 2 shows is transmitted among observer's in the space the left eye L, and similarly, the light of eye image R is transmitted among observer's in the space the right eye R; Observer's right and left eyes receives left-eye image L and the eye image R with parallax respectively, thereby in human brain, forms stereoscopic vision.
See also Fig. 2, Fig. 2 is the cross-sectional view of 3 d display device 100 shown in Figure 1.
In the present embodiment, light guide panel 1 is the liquid crystal lens grating, and it comprises first substrate 11, drive electrode structure 12, first both alignment layers 13, liquid crystal layer 14, second both alignment layers 15, public electrode structure 16 and second substrate 17 of once range upon range of setting.
Please consult Fig. 3 simultaneously, Fig. 3 is the part-structure schematic perspective view of drive electrode structure 12.First drive electrode layer 121 comprises a plurality of first bar shaped drive electrodes 1211 that laterally arrange.The a plurality of first bar shaped drive electrode, 1211 spaces and being arranged in parallel with each other, and arrange along first direction D1.The width of a plurality of first bar shaped drive electrodes 1211 equates that certainly, in some deformation design, the width of a plurality of first bar shaped drive electrodes 1211 can also have certain variation, or changes according to certain cycle, does not do qualification at this.Spacing between the first adjacent arbitrarily bar shaped drive electrode 1211 can be set according to the actual requirements.Special, the spacing between the first adjacent arbitrarily bar shaped drive electrode 1211 equates, and equals the width of the first bar shaped drive electrode 1211.Similarly, second drive electrode layer 123 comprises a plurality of second bar shaped drive electrodes 1231 that laterally arrange, and arranges along second direction D2.The width of a plurality of second bar shaped drive electrodes 1231 equates that certainly, in some deformation design, the width of a plurality of second bar shaped drive electrodes 1231 can also have certain variation, or changes according to certain cycle, does not do qualification at this.The a plurality of second bar shaped drive electrode, 1231 spaces and being arranged in parallel with each other; Spacing between the second adjacent arbitrarily bar shaped drive electrode 1231 can be set according to the actual requirements; Special; Spacing between the second adjacent arbitrarily bar shaped drive electrode 1231 equates, and equals the width of the second bar shaped drive electrode 1231.Usually, first direction D1 becomes certain included angle with second direction D2, and is special, and first direction D1 is vertical each other with second direction D2.
Further; Because display panel 2 is generally the form that matrix pixel is arranged, first direction D1 or second direction D2 can be parallel to display panel 2 line of pixels column directions, in order further to optimize display effect; Reduce the optical interference between light guide panel 1 and the display panel 2; Can make first direction D1 become certain included angle with display panel 2 line of pixels column directions respectively,, improve display effect to reduce the generation of phenomenons such as moir with second direction D2.
Include the liquid crystal molecule of nematic in the liquid crystal layer 14, under the alignment effect of first both alignment layers 13 and second both alignment layers 15, nematic crystal molecule 1 41 forms homogeneous texture as shown in Figure 2.
Preferably, first substrate 11 and second substrate 17 are glass substrate, can certainly be the transparency carriers of other material, as long as make light to see through, do not enumerate one by one here.
Preferably, drive electrode structure 12 is transparency conducting layer with public electrode structure 16, for example can be indium tin oxide (Indium Tin Oxide, ITO) or indium-zinc oxide (Indium Zinc Oxide IZO), does not enumerate here one by one.
See also Fig. 4, Fig. 4 is the principle of work synoptic diagram of light guide panel 1 shown in Figure 2.First drive electrode layer 121 is unsettled; Apply periodically variable driving voltage in second drive electrode layer 123; Apply identical common electric voltage on the public electrode structure 16, thereby between second drive electrode layer 123 and public electrode structure 16, form the periodically variable electric field of intensity, drives liquid crystal molecules changes according to the periodic intensity of electric field; The liquid crystal molecule that is also produces periodic angle to be changed; Make the ray refraction rate of 14 pairs of special polarization state of liquid crystal layer present parabola shaped variation, thereby make liquid crystal layer 14 have the effect that changes the light ray propagation direction, have lenticulation.Light guide panel 1 has the effect of lenticulation as shown in Figure 5 at this moment.
Because driving voltage is applied to second drive electrode layer 123, the bearing of trend of the liquid crystal lens grating that corresponding light guide panel 1 forms is parallel to the bearing of trend D2 of the second bar shaped drive electrode 1231.
Because lenticulation cooperates display panel to realize that the method for stereo display is known by present technique field those skilled in the art, repeats no more at this.
When about 90 degree of 3 d display device 100 rotations are watched, liquid crystal lens shown in Figure 5 can not satisfy the needs of stereo display, and can't form stereo display, experience thereby influence stereos copic viewing.
The present invention be through following method about 90 o'clock of 3 d display device 100 rotation, still can realize bore hole stereo display.
See also Fig. 6, Fig. 6 is the principle of work synoptic diagram when turning 90 degrees that revolves of light guide panel 1 shown in Figure 2.At this moment; Second drive electrode layer 123 is unsettled, on first drive electrode layer 121, applies periodically variable driving voltage, applies identical common electric voltage on the public electrode structure 16; Thereby between first drive electrode layer 121 and public electrode structure 16, form the periodically variable electric field of intensity; Drives liquid crystal molecules changes according to the periodic intensity of electric field, and the liquid crystal molecule that is also produces periodic angle to be changed, and makes the ray refraction rate of 14 pairs of special polarization state of liquid crystal layer present parabola shaped variation; Thereby make liquid crystal layer 14 have the effect that changes the light ray propagation direction, have lenticulation.Light guide panel 1 has the effect of lenticulation as shown in Figure 7 at this moment.
Because driving voltage is applied to first drive electrode layer 121, the light and shade striped of corresponding liquid crystal lens is parallel to the bearing of trend D1 of the first bar shaped drive electrode 1211.
At this moment, when the rotary viewing angle variation about 90 degree takes place relatively for beholder and 3 d display device 100, still can realize bore hole stereo display, improve beholder's stereoscopic vision greatly and experienced.
Can know through foregoing; Because the distance of the lenticulation distance display panel 2 through driving the both direction that the first bar shaped drive electrode 1211 or the second bar shaped drive electrode 1231 produce is consistent; Be equivalent to lenticulation has been rotated certain angle, thereby make the best viewing location of stereo display of both direction identical, thereby in the switching of the direction of carrying out stereo display; Do not need the beholder shift position, just can obtain identical bore hole stereoscopic vision and experience
Certainly; Angle detection device can be set, detect the relative angle relation of beholder and 3 d display device 100 in real time, according to user's actual viewing angle; The grating lens of real-time automatic adjustment light guide panel 1 is experienced for the user brings automatic stereos copic viewing.
Be appreciated that the foregoing description just lists the structure that the drive electrode structure 12 of having lifted light guide panel 1 comprises the different bar shaped drive electrode of two-layer bearing of trend, further extend; In some variant embodiment; Can also make drive electrode structure 12 comprise the more bar shaped drive electrode of multilayer, can form a plurality of direction liquid crystal lens, thereby with the demand of the stereo display of satisfying different angles; Its structure is similar with 3 d display device 1 with principle, repeats no more at this.
Compared to prior art, the light guide panel 1 of 3 d display device 100 adopts the liquid crystal lens grating, and the drive electrode structure 12 of liquid crystal lens grating is arranged to double-decker, that is, and and first drive electrode layer 121 and second drive electrode layer 123.Wherein the strip electrode bearing of trend of first drive electrode layer 121 is different from second drive electrode layer 123; Just can on first drive electrode layer 121 and second drive electrode layer 123, apply driving voltage respectively through simple driving like this; To form the lenticulation of both direction respectively, can realize bore hole stereo display thereby satisfy on both direction.And because the distance of the liquid crystal lens grating distance display panel 2 of both direction is consistent; Thereby make the best viewing location of stereo display of both direction identical; In the switching of the direction of carrying out stereo display; Do not need the beholder shift position, just can obtain identical bore hole stereoscopic vision and experience.3 d display device 100 not only can be realized freely switching between the plane/stereo demonstration, can also realize two, and very the stereo display of a plurality of directions of person is switched, and has satisfied the demand of watching of user's different visual angles.
In the above-described embodiments, only the present invention has been carried out exemplary description, but those skilled in the art can carry out various modifications to the present invention after reading present patent application under the situation that does not break away from the spirit and scope of the present invention.
Claims (10)
1. 3 d display device; Comprise display panel and light guide panel; Said light guide panel is arranged on the display surface of said display panel, and said light guide panel is used for the anaglyph light of the demonstration of said display panel is directed to predetermined locus, visual field, thereby realizes stereo display; It is characterized in that; Said light guide panel is electric controlled lenticulation, and it forms down the different multiple lenticulation of bearing of trend automatically controlled, and the said multiple lenticulation that forms is consistent with distance between the display panel.
2. 3 d display device as claimed in claim 1; It is characterized in that; Said light guide panel is the liquid crystal lens grating; It comprises first substrate, drive electrode structure, first both alignment layers, liquid crystal layer, second both alignment layers, public electrode structure and second substrate that is cascading; Wherein said drive electrode structure comprises the drive electrode layer of a plurality of range upon range of settings, through forming the different lenticulation of multiple bearing of trend forming corresponding electric field between said drive electrode layer and the said public electrode structure respectively.
3. 3 d display device as claimed in claim 1 is characterized in that, mutually insulated setting between the drive electrode layer of said a plurality of range upon range of settings.
4. 3 d display device as claimed in claim 2 is characterized in that, the bar shaped drive electrode that said arbitrary drive electrode layer comprises a plurality of spaces and is arranged in parallel with each other.
5. 3 d display device as claimed in claim 4 is characterized in that, the width of a plurality of bar shaped drive electrodes in the said same drive electrode layer equates, and the interval between the adjacent arbitrarily bar shaped drive electrode equates.
6. 3 d display device as claimed in claim 5 is characterized in that, the interval between the adjacent arbitrarily bar shaped drive electrode equals the width of a strip electrode.
7. 3 d display device as claimed in claim 2 is characterized in that, the quantity of said drive electrode layer is two, and the bearing of trend that said two drive electrode layer drive the lenticulation that forms is vertical each other.
8. 3 d display device as claimed in claim 2 is characterized in that, said display panel is display panels or Plasmia indicating panel or organic electroluminescence display panel.
9. liquid crystal lens grating; Comprise: first substrate that is cascading, drive electrode structure, first both alignment layers, liquid crystal layer, second both alignment layers, public electrode structure and second substrate; Wherein said drive electrode structure comprises the drive electrode layer of a plurality of range upon range of settings, through forming the different lenticulation of multiple bearing of trend forming corresponding electric field between said drive electrode layer and the said public electrode structure respectively.
10. liquid crystal lens grating as claimed in claim 1; It is characterized in that; Mutually insulated setting between the drive electrode layer of said a plurality of range upon range of settings; And the width of a plurality of bar shaped drive electrodes in the bar shaped drive electrode that said arbitrary drive electrode layer comprises a plurality of spaces and is arranged in parallel with each other, said same drive electrode layer equates, and the interval between the adjacent arbitrarily bar shaped drive electrode equates.
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