CN102436100B - Stereo display device - Google Patents
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- CN102436100B CN102436100B CN201110439498.8A CN201110439498A CN102436100B CN 102436100 B CN102436100 B CN 102436100B CN 201110439498 A CN201110439498 A CN 201110439498A CN 102436100 B CN102436100 B CN 102436100B
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Abstract
The invention relates to a stereo display device. The device comprises a display panel and a light guide panel, wherein the light guide panel is arranged on the display surface of the display panel and is used for guiding the light of the parallax images displayed by the display panel to a predetermined viewing field spatial position, thus realizing stereo display; the light guide panel is an electrically controllable slit grating and forms various slit gratings with different extension directions under electrical control; and the distances between the formed various slit gratings and the display panel are identical. The device has the following advantages: stereo display pictures can be formed in multiple directions and the viewing distances are identical.
Description
Technical field
The present invention relates to field of stereoscopic display, particularly relate to the 3 d display device that a kind of multiple directions all form slit grating.
Background technology
Left eye and the right eye of people have spacing, and cause the visual angle of two to there is fine distinction, the scenery that such difference can allow left eye and right eye observe respectively has parallax slightly, thus forms stereo-picture in the brain of people.
General 3 d display device is when watching, need wearing stereoscopic glasses, make the beholder natively wearing glasses (as spectacles, reading glasses etc.), in order to obtain viewing effect clearly, need two pairs of glasses overlaps, make stereo display watch comparatively inconvenience.In addition, due to anaglyph spectacles two mirror pin between width normally fixing, this may make the beholder of different shape of face, can not obtain preferably experience when wearing stereoscopic glasses.Therefore, do not need the bore hole stereo display technique of wearing stereoscopic glasses more and more by people are paid close attention to.
Along with the development of liquid crystal technology, liquid crystal material is widely used in various field.
Liquid crystal slit grating has a wide range of applications, wherein a kind of typical apply is three-dimensional (3D) display application, liquid crystal slit grating coordinates display device, by the right and left eyes of the parallax picture light splitting oriented users that display device shows, thus makes user form stereoscopic vision.The handoff functionality of plane/stereo (2D/3D) picture can also be realized simultaneously, user-friendly.
Current liquid crystal slit grating only can form the slit in a direction, the 3 d display device of its correspondence also can only form stereo display effect in one direction, when display device rotates time, beholder can not obtain good stereo vision experience, this significantly limit the application of stereo display, reduces the stereo vision experience of beholder.
Summary of the invention
Technical matters solved by the invention is to provide a kind of 3 d display device, comprise display panel, light guide panel and angle detection device, described light guide panel is arranged on the display surface of described display panel, described light guide panel is used for the anaglyph light of the display of described display panel to be directed to predetermined view field space position, thus realize stereo display, described light guide panel is liquid crystal slit grating, it comprises first polaroid that is cascading, first substrate, drive electrode structure, first both alignment layers, liquid crystal layer, second both alignment layers, public electrode structure and second substrate and the second polaroid, the insulation course that described drive electrode structure comprises the first drive electrode layer, the second drive electrode layer and is positioned at therebetween, wherein, described first drive electrode layer comprises the first bar shaped drive electrode that multiple parallel interval is arranged, and described second drive electrode layer comprises multiple parallel interval and arranges and the second bar shaped drive electrode perpendicular with described first bar shaped drive electrode, when described 3 d display device work, described first drive electrode layer is unsettled, described second drive electrode layer applies identical driving voltage, and described public electrode structure applies common electric voltage, to form the liquid crystal slit grating of the bearing of trend being parallel to described second strip electrode, and when described 3 d display device 90-degree rotation, described second drive electrode layer is unsettled, described first drive electrode layer applies identical driving voltage, and described public electrode structure applies common electric voltage, to form the liquid crystal slit grating of the bearing of trend being parallel to described first bar shaped drive electrode.
According to a preferred embodiment of the invention, the width of the multiple bar shaped drive electrodes in same drive electrode layer is equal, and interval between the bar shaped drive electrode of arbitrary neighborhood is equal.
According to a preferred embodiment of the invention, the interval between the bar shaped drive electrode of arbitrary neighborhood equals the width of a strip electrode.
According to a preferred embodiment of the invention, described display panel is display panels or Plasmia indicating panel or organic electroluminescence display panel, and its stereoscopic parallax image light produced is polarized light, the polarization direction of described polarized light is consistent with the polarization direction of the polaroid of the light guide panel of closing on.
Compared to prior art, the light guide panel of 3 d display device of the present invention adopts liquid crystal slit grating, and the drive electrode vibrational power flow of liquid crystal slit grating is become double-decker, that is, the first drive electrode layer and the second drive electrode layer.Wherein the strip electrode bearing of trend of the first drive electrode layer is different from the second drive electrode layer, just driving voltage can be applied respectively in the first drive electrode layer and the second drive electrode layer like this by simple driving, to form the slit grating of both direction respectively, thus meet can realize bore hole stereo display in the two directions.And because the distance of the slit grating distance display panel of both direction is consistent, thus make the best viewing location of the stereo display of both direction identical, when the switching in direction carrying out stereo display, do not need beholder shift position, just can obtain identical auto-stereoscopic and experience.3 d display device can not only realize freely switching between plane/stereo display, can also realize two, and notably the stereo display of multiple directions switches, and meets the viewing demand of user's different visual angles.
Accompanying drawing explanation
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 Fig. 1.
Fig. 3 is the part-structure schematic perspective view of the structure of drive electrode shown in Fig. 2.
Fig. 4 is the principle of work schematic diagram of the guide panel of light shown in Fig. 2.
Fig. 5 is the schematic diagram of the slit grating that the guide panel of light shown in Fig. 4 is formed.
Principle of work schematic diagram when Fig. 6 is the 90-degree rotation of the guide panel of light shown in Fig. 2.
Fig. 7 is the schematic diagram of the slit grating that the guide panel of light shown in Fig. 6 is formed.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Referring to 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.
Display panel 2 is for showing stereoscopic parallax picture, generally comprises the pixel cell with matrix structure.Display panel 2 can be display panels, Plasmia indicating panel, organic electroluminescence display panel etc., unrestricted herein.Be described with display panels in the present embodiment.
Light guide panel 1 arranges on the display surface of display panel 2, is directed to predetermined view field space position, thus realizes stereo display with the anaglyph light of the display sent by display panel 2.
As shown in Figure 1, the light that display panel 2 sends is after the modulation of light guide panel 2, the light of the left-eye image L that display panel 2 shows is transmitted in the left eye L of observer in space, similar, the light of eye image R is transmitted in the right eye R of observer in space, the right and left eyes of observer receives the left-eye image L and eye image R with parallax respectively, thus forms stereoscopic vision in human brain.
Refer to Fig. 2, Fig. 2 is the cross-sectional view of 3 d display device 100 shown in Fig. 1.
In the present embodiment, light guide panel 1 is liquid crystal slit grating, and it comprises the first polaroid 10, 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, second substrate 17 and the second polaroid 18.
Drive electrode structure 12 and public electrode structure 16 are arranged at the relative inside surface of first substrate 11 and second substrate 17 respectively.Wherein, drive electrode structure 12 comprises the first drive electrode layer 121, second drive electrode layer 123 of stacked setting, and is arranged on the insulation course 122 for making the first drive electrode layer 121 and the second drive electrode layer 123 electric insulation each other between the first drive electrode layer 121 and the second drive electrode layer 123.
Please refer to the part-structure schematic perspective view that Fig. 3, Fig. 3 are drive electrode structures 12.First drive electrode layer 121 comprises multiple the first bar shaped drive electrode 1211 be arranged in parallel.Multiple first bar shaped drive electrode 1211 is spaced and be arranged in parallel with each other, and arranges along first direction D1.The width of multiple first bar shaped drive electrode 1211 is equal.Spacing between first bar shaped drive electrode 1211 of arbitrary neighborhood can set according to the actual requirements, and especially, the spacing between the first bar shaped drive electrode 1211 of arbitrary neighborhood equals the width of the first bar shaped drive electrode 1211.Similar, the second drive electrode layer 123 comprises multiple the second bar shaped drive electrode 1231 be arranged in parallel, and arranges along second direction D2.The width of multiple second bar shaped drive electrode 1231 is equal.Multiple second bar shaped drive electrode 1231 is spaced and be arranged in parallel with each other, spacing between second bar shaped drive electrode 1231 of arbitrary neighborhood can set according to the actual requirements, especially, the spacing between the second bar shaped drive electrode 1231 of arbitrary neighborhood equals the width of the second bar shaped drive electrode 1231.Usually, first direction D1 and second direction D2 is at a certain angle, and especially, first direction D1 and second direction D2 are mutually vertical.
Public electrode structure 16 is plane-shape electrode, is arranged on the inside surface of second substrate 17.
Further, because display panel 2 is generally the form of matrix pixel arrangement, first direction D1 or second direction D2 can be parallel to the orientation of display panel 2 pixel, in order to optimize display effect further, reduce the optical interference between light guide panel 1 and display panel 2, first direction D1 and second direction D2 can be made at a certain angle with the orientation of display panel 2 pixel respectively, to reduce the generation of the phenomenons such as moir patterns, improve display effect.
Liquid crystal layer 14 is arranged between drive electrode structure 12 and public electrode structure 16, first both alignment layers 13 is arranged between liquid crystal layer 14 and drive electrode structure 12, second both alignment layers 15 is arranged between liquid crystal layer 14 and public electrode structure 16, first both alignment layers 13 is vertical with the alignment direction of the second both alignment layers 15, thus alignment effect can be carried out to the liquid crystal molecule in liquid crystal layer 12, thus make liquid crystal molecule formation twisted nematic structure as shown in Figure 2.
First polaroid 10 is arranged on the outside of first substrate 11, namely relative with the first alignment film 13 side, and the polarization direction of the first polaroid 10 is parallel with the first alignment film 13; Second polaroid 18 is arranged on the outside of second substrate 17, namely relative with the second alignment film 15 side, and the polarization direction of the second polaroid 18 is parallel with the second alignment film 15.Certainly, in some follow-on design, the first polaroid 10 and the second polaroid 18 also can be arranged on the inner side of first substrate 11 and second substrate 17, are not specifically limited at this.
In the embodiment shown in Figure 2, the alignment direction of the first both alignment layers 13, the polarization direction of the first polaroid 10 all extend along the first bearing of trend; The alignment direction of the second both alignment layers 15, the polarization direction of the second polaroid 18 all extend along the second bearing of trend.Preferably, the first bearing of trend is mutually vertical with the second bearing of trend.
Include the liquid crystal molecule of nematic in liquid crystal layer 14, under the alignment effect of the first both alignment layers 13 and the second both alignment layers 15, nematic liquid crystal molecules 141 forms aligned twisted structure 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 can be through, enumerate herein.
Preferably, drive electrode structure 12 and public electrode structure 16 are transparency conducting layer, such as can be indium tin oxide (Indium Tin Oxide, ITO) or indium-zinc oxide (Indium Zinc Oxide, IZO), do not enumerate herein.
Display panel 2 is display panels, and exiting surface comprises a polaroid 21, general, and the polarization direction of polaroid 21 is parallel with the polarization direction of the second polaroid 18 of light wire panel 1.When the polarization direction of polaroid 21 and the second polaroid 18 is nonparallel time, phase shift films can be added between polaroid 21 and the second polaroid 18, with adjust display panel 2 to go out light polarization direction parallel with the polarization direction of the second polaroid 18.Certainly, for display panels as shown in Figure 2, also polaroid 21 and the second polaroid 18 can be combined, form a polaroid, further reduce the thickness of 3 d display device 100, can also optical film material be saved, reduce production cost.
Refer to Fig. 4, Fig. 4 is the principle of work schematic diagram of the guide panel of light shown in Fig. 21.First drive electrode layer 121 is unsettled, identical driving voltage is applied in the second drive electrode layer 123, public electrode structure 16 applies common electric voltage, thus highfield is formed between the second drive electrode layer 123 and public electrode structure 16, drive liquid crystal molecule to arrange according to direction of an electric field, be achieved slit grating function.Now, when the polarized light (with black circle represent its polarization direction) identical with the polarization direction of the second polaroid 18 when polarization direction is propagated to first substrate 11 direction by second substrate 17, at the bar-shaped zone of the second drive electrode layer 123 correspondence, polarized light can pass second substrate 17, liquid crystal molecule does not change the polarization direction of polarized light simultaneously, then polarized light cannot pass through the first polaroid 10, forms dark fringe (or claiming shading striped) outside first substrate 11; At the bar-shaped zone that the spacer region of the second drive electrode layer 123 is corresponding, polarized light is through second substrate 17, under the effect of the liquid crystal molecule 141 of aligned twisted, the polarization direction of polarized light changes into the polarized light (with strigula represent its polarization direction) identical with the first polaroid 10 polarization direction gradually, then polarized light can pass through the first polaroid 10, forms bright fringes (or claiming printing opacity striped) outside first substrate 11.Shading striped and printing opacity striped are alternately arranged, and act on similar to common slit grating, thus form liquid crystal slit grating, specifically slit grating as shown in Figure 5.
Because driving voltage is applied to the second drive electrode layer 123, the light and shade striped of corresponding liquid crystal slit is parallel to the bearing of trend D2 of the second bar shaped drive electrode 1231.
Because slit grating coordinates display panel to realize the method for stereo display known by the art those skilled in the art, do not repeat them here.
When 3 d display device 100 rotates about 90 degree of viewings, the slit shown in Fig. 5 can not meet the needs of stereo display, and cannot form stereo display, thus affect stereos copic viewing experience.
The present invention is by following method when 3 d display device 100 rotates about 90, still can realize bore hole stereo display.
Refer to Fig. 6, principle of work schematic diagram when Fig. 6 is the 90-degree rotation of the guide panel of light shown in Fig. 21.Now, second drive electrode layer 123 is unsettled, first drive electrode layer 121 applies identical driving voltage, public electrode structure 16 applies common electric voltage, thus highfield is formed between the first drive electrode layer 121 and public electrode structure 16, drive liquid crystal molecule to arrange according to direction of an electric field, be achieved slit grating function.Now, when the polarized light (with section horizontal line represent its polarization direction) identical with the polarization direction of the second polaroid 18 when polarization direction is propagated to first substrate 11 direction by second substrate 17, at the bar-shaped zone of the first drive electrode layer 121 correspondence, polarized light can pass second substrate 17, liquid crystal molecule does not change the polarization direction of polarized light simultaneously, then polarized light cannot pass through the first polaroid 10, forms dark fringe (or claiming shading striped) outside first substrate 11; At the bar-shaped zone that the spacer region of the first drive electrode layer 121 is corresponding, polarized light is through second substrate 17, under the effect of the liquid crystal molecule 141 of aligned twisted, the polarization direction of polarized light changes into the polarized light (with black circle represent its polarization direction) identical with the first polaroid 10 polarization direction gradually, then polarized light can pass through the first polaroid 10, forms bright fringes (or claiming printing opacity striped) outside first substrate 11.Shading striped and printing opacity striped are alternately arranged, and act on similar to common slit grating, thus form liquid crystal slit grating, specifically slit grating as shown in Figure 7.
Because driving voltage is applied to the first drive electrode layer 121, the light and shade striped of corresponding liquid crystal slit is parallel to the bearing of trend D1 of the first bar shaped drive electrode 1211.
Now, when beholder's rotary viewing angle of occurring about 90 degree relative to 3 d display device 100 changes, still can realize bore hole stereo display, improve the stereo vision experience of beholder greatly.
Known by foregoing, because the distance of the slit grating distance display panel 2 of the both direction by driving first bar shaped drive electrode 1211 or the generation of the second bar shaped drive electrode 1211 is consistent, slit grating is equivalent to have rotated certain angle, thus make the best viewing location of the stereo display of both direction identical, thus when the switching in direction carrying out stereo display, do not need beholder shift position, just can obtain identical auto-stereoscopic and experience.
Certainly, can angle detection device be set, detects the relative angular relationship of beholder and 3 d display device 100 in real time, according to the actual viewing angle of user, the grating slit of real-time automatic adjustment light guide panel 1, for user brings automatic stereos copic viewing to experience.
Be appreciated that, above-described embodiment only lists the structure that drive electrode structure 12 comprises the different bar shaped drive electrode of two-layer bearing of trend, further extension, in some variant embodiment, drive electrode structure 12 can also be made to comprise more multi-layered bar shaped drive electrode, to meet the demand of the stereo display of different angles, its configuration and principle is similar to 3 d display device 1, does not repeat them here.
Compared to prior art, the light guide panel 1 of 3 d display device 100 of the present invention adopts liquid crystal slit grating, and the drive electrode structure 12 of liquid crystal slit grating is arranged to double-decker, that is, the first drive electrode layer 121 and the second drive electrode layer 123.Wherein the strip electrode bearing of trend of the first drive electrode layer 121 is different from the second drive electrode layer 123, just driving voltage can be applied respectively in the first drive electrode layer 121 and the second drive electrode layer 123 like this by simple driving, to form the slit grating of both direction respectively, thus meet can realize bore hole stereo display in the two directions.And because the distance of the slit grating distance display panel 2 of both direction is consistent, thus make the best viewing location of the stereo display of both direction identical, when the switching in direction carrying out stereo display, do not need beholder shift position, just can obtain identical auto-stereoscopic and experience.3 d display device 100 can not only realize freely switching between plane/stereo display, can also realize two, and notably the stereo display of multiple directions switches, and meets the viewing demand of user's different visual angles.
In the above-described embodiments, only to invention has been exemplary description, but those skilled in the art can carry out various amendment to the present invention without departing from the spirit and scope of the present invention after reading present patent application.
Claims (4)
1. a 3 d display device, comprise display panel, light guide panel and angle detection device, described light guide panel is arranged on the display surface of described display panel, described light guide panel is used for the anaglyph light of the display of described display panel to be directed to predetermined view field space position, thus realize stereo display, it is characterized in that
Described light guide panel is liquid crystal slit grating, and it comprises first polaroid that is cascading, first substrate, drive electrode structure, the first both alignment layers, liquid crystal layer, the second both alignment layers, public electrode structure and second substrate and the second polaroid; The insulation course that described drive electrode structure comprises the first drive electrode layer, the second drive electrode layer and is positioned at therebetween, wherein, described first drive electrode layer comprises the first bar shaped drive electrode that multiple parallel interval is arranged, and described second drive electrode layer comprises multiple parallel interval and arranges and the second bar shaped drive electrode perpendicular with described first bar shaped drive electrode;
When described 3 d display device work, described first drive electrode layer is unsettled, described second drive electrode layer applies identical driving voltage, and described public electrode structure applies common electric voltage, to form the liquid crystal slit grating of the bearing of trend being parallel to described second strip electrode; And when described 3 d display device 90-degree rotation, described second drive electrode layer is unsettled, described first drive electrode layer applies identical driving voltage, and described public electrode structure applies common electric voltage, to form the liquid crystal slit grating of the bearing of trend being parallel to described first bar shaped drive electrode.
2. 3 d display device as claimed in claim 1, it is characterized in that, the width of the multiple bar shaped drive electrodes in same drive electrode layer is equal, and interval between the bar shaped drive electrode of arbitrary neighborhood is equal.
3. 3 d display device as claimed in claim 2, it is characterized in that, the interval between the bar shaped drive electrode of arbitrary neighborhood equals the width of a strip electrode.
4. 3 d display device as claimed in claim 1, it is characterized in that, described display panel is display panels or Plasmia indicating panel or organic electroluminescence display panel, and its stereoscopic parallax image light produced is polarized light, the polarization direction of described polarized light is consistent with the polarization direction of the polaroid of the light guide panel of closing on.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102707515B (en) * | 2012-05-03 | 2013-10-09 | 北京京东方光电科技有限公司 | Liquid crystal grating, preparation method of liquid crystal grating, 3D (three- dimensional) display part and 3D display device |
| CN102707446B (en) * | 2012-06-14 | 2014-04-30 | 天马微电子股份有限公司 | Double-vision display device |
| JP5921376B2 (en) | 2012-08-01 | 2016-05-24 | 株式会社ジャパンディスプレイ | 3D display device |
| CN102854628B (en) * | 2012-09-25 | 2015-02-11 | 京东方科技集团股份有限公司 | Display device and manufacturing method thereof |
| CN102981321B (en) * | 2012-11-15 | 2015-09-02 | 中航华东光电有限公司 | A kind of liquid crystal slit grating, 3 d display device and method for making |
| CN103135280B (en) * | 2012-11-15 | 2016-05-25 | 中航华东光电有限公司 | A kind of liquid crystal barrier three-dimensional display system |
| CN109459863A (en) | 2017-09-06 | 2019-03-12 | 京东方科技集团股份有限公司 | A kind of display panel assembly and its display methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102207632A (en) * | 2011-07-06 | 2011-10-05 | 上海理工大学 | Stereoscopic display |
| CN102262478A (en) * | 2011-05-20 | 2011-11-30 | 深圳超多维光电子有限公司 | Touch type liquid crystal slit grating, stereo display device and computer system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102262478A (en) * | 2011-05-20 | 2011-11-30 | 深圳超多维光电子有限公司 | Touch type liquid crystal slit grating, stereo display device and computer system |
| CN102207632A (en) * | 2011-07-06 | 2011-10-05 | 上海理工大学 | Stereoscopic display |
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