Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a monocular stereoscopic display which can realize monocular stereoscopic display.
A monocular stereoscopic display according to an embodiment of the present invention includes: a display panel including a plurality of first pixel units and a plurality of second pixel units; and the grating component is arranged opposite to the light-emitting surface of the display panel, and is configured to be alternately switched between a first use state and a second use state, under the first use state and the second use state, the grating component respectively forms a first passing area for passing light emitted by the first pixel units and a second passing area for passing light emitted by the second pixel units, and a convergence point of light emitted by the first pixel units after passing through the grating component is not coincident with a convergence point of light emitted by the second pixel units after passing through the grating component.
According to the monocular stereoscopic display of the embodiment of the invention, the convergent points of the light convergence of different pixel units (herein, referred to as the first pixel unit and the second pixel unit) are fed back to the pupil of the same human eye in a time-sharing manner (i.e., at different times), and the monocular stereoscopic display can be realized by matching with the persistence of vision of the human eye.
According to some embodiments of the invention, the grating member comprises a plurality of normally open regions, a plurality of normally closed regions, a first intermittently open-close region and a second intermittently open-close region, the first intermittently open-close region and the second intermittently open-close region being alternately opened and closed, the first intermittently open-close region being open in the first use state and defining a first passage area together with the normally open region, and the second intermittently open-close region being open in the second use state and defining a second passage area together with the normally open region.
According to some embodiments of the invention, the grating member comprises at least one liquid crystal grating.
According to some embodiments of the invention, the liquid crystal grating comprises: the liquid crystal display panel comprises a first substrate, a second substrate, a first electrode arranged on the first substrate, a second electrode arranged on the second substrate, and a liquid crystal layer arranged between the first electrode and the second electrode, wherein the second electrode is divided into a plurality of groups, each group of the second electrodes comprises a plurality of ITO electrodes, the plurality of ITO electrodes in each group are divided into a first subgroup, a second subgroup and a fourth subgroup, the ITO electrodes in the first subgroup are constantly applied with voltage to enable the liquid crystal gratings in corresponding areas to be formed into normally-off areas, the ITO electrodes in the second subgroup and the ITO electrodes in the fourth subgroup are alternately applied with voltage to enable the liquid crystal gratings in corresponding areas to be respectively formed into first intermittently-closed areas and second intermittently-closed areas, and the ITO electrodes in the third subgroup are constantly not applied with voltage to enable the liquid crystal gratings in corresponding areas to be formed into normally-on areas.
According to some embodiments of the present invention, the arrangement direction of the plurality of groups of second electrodes is the same as the arrangement direction of the plurality of second subgroups, the structures of the groups of second electrodes are the same, and each group of second electrodes is arranged in sequence according to the first subgroup, the second subgroup, the third subgroup and the fourth subgroup.
According to some embodiments of the invention, an area of an orthogonal projection of the first subgroup and the third subgroup in a direction perpendicular to the liquid crystal layer is the same, an area of an orthogonal projection of the second subgroup and the fourth subgroup in a direction perpendicular to the liquid crystal layer is the same, and an area of an orthogonal projection of the second subgroup in a direction perpendicular to the liquid crystal layer is larger than an area of an orthogonal projection of the first subgroup in a direction perpendicular to the liquid crystal layer.
According to some embodiments of the invention, the liquid crystal grating comprises: the liquid crystal grating comprises a first substrate, a second substrate, a liquid crystal layer, a shading layer arranged on the first substrate, a plurality of first electrodes and second electrodes arranged on the first substrate, a plurality of third electrodes and fourth electrodes arranged on the second substrate, wherein the liquid crystal grating is divided into a plurality of partitions with the same structure, each partition is divided into first to fourth sub-areas, the shading layer is located in the first sub-area to enable the first sub-area to be formed into a normally-closed area, the first electrodes and the third electrodes are located in the second sub-area, the second electrodes and the fourth electrodes are located in the fourth sub-area, the electrodes in the second sub-area and the fourth sub-area are alternately loaded with voltage to enable the second sub-area to be formed into a first intermittent open-close area and enable the fourth sub-area to be formed into a second intermittent open-close area, and the third sub-area is formed into a normally-open area.
According to some embodiments of the present invention, the grating member includes a first liquid crystal grating and a second grating, each of the first liquid crystal grating and the second grating being disposed parallel to the display panel at different distances from the display panel, the first intermittent closed regions and the second intermittent closed regions being formed on the first liquid crystal grating, and the normally-closed regions being formed on the second grating.
According to some embodiments of the invention, the first liquid crystal grating comprises: the liquid crystal grating comprises a first substrate, a second substrate, a liquid crystal layer, a plurality of first electrodes and second electrodes arranged on the first substrate, a plurality of third electrodes and fourth electrodes arranged on the second substrate, wherein the liquid crystal grating is divided into a plurality of subareas with the same structure, each subarea is divided into first to fourth subareas, the first electrodes and the third electrodes are positioned in the second subarea, the second electrodes and the fourth electrodes are positioned in the fourth subarea, the electrodes in the second subarea and the fourth subarea are alternately loaded with voltage to form the second subarea into a first intermittent opening and closing area and the fourth subarea into a second intermittent opening and closing area, and the first subarea and the third subarea are formed into a normally-open area; the second grating includes: the light-shielding layer comprises a first substrate, a second substrate and a plurality of light-shielding layers arranged on the first substrate and distributed at intervals, wherein the region where the light-shielding layers are located is formed into a normally closed region, and the region located between the adjacent light-shielding layers is formed into a normally open region.
According to some embodiments of the present invention, a distance from a first pixel unit to the light barrier member and a distance from a second pixel unit to the light barrier member of the display panel are 0.5mm to 1cm, widths of the first pixel unit and the second pixel unit are a, widths of the first intermittent open-close region and the second intermittent open-close region are b, widths of the normally-open region and the normally-close region are c, wherein a is 1.2 to 1.5 times b, and a is 3 to 6 times c.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Referring now to fig. 1 to 6, a monocular stereoscopic display 100 according to an embodiment of the present invention is shown.
According to the monocular stereoscopic display 100 according to the embodiment of the present invention, the monocular stereoscopic display 100 includes a display panel 1 and a barrier member 2.
As shown in fig. 1, the display panel 1 includes a plurality of first pixel units 11 and a plurality of second pixel units 12, and the plurality of first pixel units 11 and the plurality of second pixel units 12 are arranged alternately. The light barrier member 2 is disposed opposite to the light emitting surface of the display panel 1, and the light barrier member 2 is configured to be alternately switchable between a first use state and a second use state. In the first use state, the grating member 2 forms a first passing area 21 through which light emitted from the plurality of first pixel cells 11 passes; in the second use state, the grating member 2 forms the second passage area 22 through which light emitted from the plurality of second pixel units 12 passes. The convergence point of the light emitted by the first pixel unit 11 after passing through the grating component 2 and the convergence point of the light emitted by the second pixel unit 12 after passing through the grating component 2 do not coincide.
As shown in fig. 1, a convergence point of the light emitted from the first pixel unit 11 after passing through the grating component 2 is a first convergence point 111, and a convergence point of the light emitted from the second pixel unit 12 after passing through the grating component 2 is a second convergence point 121. It is understood that both the first convergence point 111 and the second convergence point 121 can be fed back to the pupil of the same eye (i.e. the distance between the first convergence point 111 and the second convergence point 121 is smaller than the diameter of the pupil). This ensures that information of both the first pixel cell 11 and the second pixel cell 12 is fed back to the pupil of the human eye.
Specifically, since the first usage state and the second usage state are alternately switched, the first convergence point 111 and the second convergence point 121 converge to the pupil of the human eye with a certain time difference. For example: the monocular stereoscopic display 100 alternately switches between a first use state and a second use state, when the light emitted by the first pixel unit 11 converges at the pupil of the human eye, the light emitted by the second pixel unit 12 does not converge at the pupil of the human eye, and when the light emitted by the second pixel unit 12 converges at the pupil of the human eye, the information returned to the pupil of the human eye by the first pixel unit 11 has been retained for a certain time. When the first use state and the second use state are switched at a certain frequency, the persistence of vision of the human eyes can receive the information fed back by the first pixel unit 11 and the second pixel unit 12, and the stereoscopic display is automatically synthesized by the brain, so that the monocular stereoscopic display can be realized.
It can be understood that the plurality of first pixel units 11 and the plurality of second pixel units 12 are distributed at intervals, the light projected by the plurality of first pixel units 11 converges at the first convergence point 111, and the light projected by the plurality of second pixel units 12 converges at the second convergence point 121.
According to the monocular stereoscopic display 100 of the embodiment of the present invention, the convergence points of the light rays converging in the different pixel units (herein, the first pixel unit 11 and the second pixel unit 12) are fed back to the pupil of the same human eye in a time-sharing manner (i.e., not simultaneously), and the monocular stereoscopic display can be realized by matching with the persistence of vision of the human eye.
In some optional embodiments of the present invention, the monocular stereoscopic display 100 further includes a first polarizer, a second polarizer, an upper PI layer (i.e., an upper alignment layer), a lower PI layer (i.e., a lower alignment layer), and the like, which are known to those skilled in the art and will not be described herein.
As shown in fig. 2, in the embodiment of the present invention, the grating member 2 includes a plurality of normally-open regions 23, a plurality of normally-closed regions 24, a first intermittently-closed region 25, and a second intermittently-closed region 26. The first intermittent open-close section 25 and the second intermittent open-close section 26 are alternately opened and closed, and in the first use state, the first intermittent open-close section 25 is opened and defines the first passing area 21 together with the normally open section 23; in the second use state, the second intermittent closed zone 26 is open and defines the second passage area 22 together with the normally open zone 23. The first passing area 21 may allow light of the first pixel unit 11 to pass therethrough, the second passing area 22 may allow light of the second pixel unit 12 to pass therethrough, and the first intermittent open-close region 25 and the second intermittent open-close region 26 may be alternately opened.
Specifically, whether in the first use state or the second use state, the light of the first pixel unit 11 and the second pixel unit 12 can pass through the normally-open region 23; in either the first or second usage state, the light from the first pixel cell 11 and the second pixel cell 12 cannot pass through the normally-off region 24. Such an arrangement may facilitate convergence of light of the first pixel cell 11 or the second pixel cell 12 when the first use state and the second use state are switched.
In some embodiments of the present invention, the grating component 2 includes at least one liquid crystal grating, so that the liquid crystal grating is adopted as the grating component 2 to realize accurate control of the light shielding region and the light passing region, and the position change of the light shielding region and the light transmitting region of the liquid crystal grating can be realized by adjusting the loading voltage of each electrode in an electric control manner, so as to meet different use requirements, and the present invention has the advantages of better universality, wider application range and wider application occasions.
Of course, the present invention is not limited to this, and the grating member 2 is not limited to the liquid crystal grating, but may be a general grating or other optical elements capable of functioning as a grating.
The grating elements according to three specific embodiments of the present invention are described in detail below.
As shown in fig. 1 and 2, in the first embodiment of the present invention, the grating member is a liquid crystal grating, and the liquid crystal grating includes: a first substrate 271, a second substrate 272, a first electrode 281 disposed on the first substrate 271, a second electrode 282 disposed on the second substrate 272, and a liquid crystal layer 6 disposed between the first electrode 281 and the second electrode 282. The second electrodes 282 are divided into a plurality of groups, each group of the second electrodes 282 includes a plurality of ITO electrodes 2821, and the plurality of ITO electrodes 2821 within each group are divided into a first subgroup 31, a second subgroup 32, a third subgroup 33 and a fourth subgroup 34, the ITO electrodes 2821 within the first subgroup 31 are constantly applied with a voltage to form the liquid crystal gratings of the corresponding regions into the normally-off regions 24, the ITO electrodes 2821 within the second subgroup 32 and the ITO electrodes 2821 within the fourth subgroup 34 are alternately applied with a voltage to form the liquid crystal gratings of the corresponding regions into the first and second intermittent-closed regions 25 and 26, respectively, the ITO electrodes 2821 within the third subgroup 33 are constantly applied with no voltage to form the liquid crystal gratings of the corresponding regions into the normally-off regions 23.
It can be understood that, when the monocular stereoscopic display 100 operates, the first sub-group 31 is always in an operating state (i.e. a voltage is applied), so that the light of the first pixel unit 11 and the light of the second pixel unit 12 cannot pass through; the fourth sub-group 34 is always in the non-operating state (i.e. no voltage is applied), so that the light of the first pixel unit 11 and the light of the second pixel unit 12 can pass through; by controlling and adjusting the working states of the second subgroup 32 and the fourth subgroup 34, that is, applying voltages to the ITO electrodes 2821 in the second subgroup 32 and the fourth subgroup 34 according to the display requirements, it is possible to achieve a certain time difference when the light rays of the first pixel unit 11 and the second pixel unit 12 are converged and fed back to the pupil of the human eye after passing through the first intermittent closed region 25 and the second intermittent closed region 26.
As shown in fig. 3, the arrangement direction of the plurality of sets of second electrodes 282 is identical to the arrangement direction of the plurality of second subgroups 32, the structures of the sets of second electrodes 282 are identical, and the sets of second electrodes 282 are arranged in the order of the first subgroup 31, the second subgroup 32, the third subgroup 33, and the fourth subgroup 34. The plurality of sets of the same structure of the second electrodes 282 may facilitate the control of the first, second, third and fourth subsets 31, 32, 33, 34 in each of the second electrodes 282, respectively.
Specifically, the first subset 31 of the plurality of sets of second electrodes 282 may be disposed in parallel, the second subset 32 of the plurality of sets of second electrodes 282 may be disposed in parallel, the third subset 33 of the plurality of sets of second electrodes 282 may be disposed in parallel, and the fourth subset 34 of the plurality of sets of second electrodes 282 may be disposed in parallel, so that the loading voltage states of different subsets (such as the second subset 32 and the fourth subset 34) of the plurality of sets of second electrodes 282 having the same effect (effect on the light of the first pixel unit 11 and the second pixel unit 12) may be synchronously controlled. Since the voltage applied to the plurality of ITO electrodes 2821 in the first subgroup 31 and the fourth subgroup 34 is not changed, the parallel connection mode can better control whether the ITO electrodes are applied with voltage or not.
It should be noted that the second electrodes 282 in the dashed circle in fig. 3 include the first subgroup 31, the second subgroup 32, the third subgroup 33, and the fourth subgroup 34 for the convenience of the reader to understand the grouping of the ITO electrodes 2821, and the number of the ITO electrodes 2821 is not limited thereto.
As shown in fig. 2 and 3, in the embodiment of the present invention, the area of the orthographic projection of the first subgroup 31 and the third subgroup 33 in the direction perpendicular to the liquid crystal layer 6 is the same, the area of the orthographic projection of the second subgroup 32 and the fourth subgroup 34 in the direction perpendicular to the liquid crystal layer 6 is the same, and the area of the orthographic projection of the second subgroup 32 in the direction perpendicular to the liquid crystal layer 6 is larger than the area of the orthographic projection of the first subgroup 31 in the direction perpendicular to the liquid crystal layer 6. Such a structure is more structured, which facilitates the manufacture of the monocular stereoscopic display 100 and facilitates the control of the light-shielding region by the lenticular member 2.
Therefore, the throughput of the light rays of the first pixel unit 11 and the second pixel unit 12 can be effectively ensured, the distribution of the light rays passing through is more uniform, and the effect that the light rays emitted by the monocular stereoscopic display 100 are fed back to human eyes is improved.
As shown in fig. 4 and 5, in the second embodiment of the present invention, the liquid crystal grating includes: the liquid crystal display device includes a first substrate 271, a second substrate 272, a liquid crystal layer 6, a light shielding layer 5 provided on the first substrate 271, a plurality of first electrodes 281 and second electrodes 282 provided on the first substrate 271, and a plurality of third electrodes 283 and fourth electrodes 284 provided on the second substrate 272. The liquid crystal grating is divided into a plurality of partitions having the same structure, and each partition is divided into a first sub-area 41, a second sub-area 42, a third sub-area 43, and a fourth sub-area 44.
As shown in fig. 4, in particular, the light shielding layer 5 is located in the first sub-region 41 to make the first sub-region 41 form the normally-off region 24, so that the light of the first pixel unit 11 and the second pixel unit 12 cannot pass through the first sub-region 41; the first electrode 281 and the third electrode 283 are located in the second sub-region 42, the second electrode 282 and the fourth electrode 284 are located in the fourth sub-region 44, the electrodes in the second sub-region 42 are alternately applied with a voltage to form the second sub-region 42 into the first intermittent open-close region 25, and the electrodes in the fourth sub-region 44 are alternately applied with a voltage to form the fourth sub-region 44 into the second intermittent open-close region 26.
The voltages are alternately applied to the second sub-area 42 and the fourth sub-area 44, so that the time for the first pixel unit 11 and the second pixel unit 12 to pass through the grating part 2 is different, and therefore, a certain time difference is formed when the first pixel unit 11 and the second pixel unit 12 converge and feed back to the pupil of the human eye after passing through the first intermittent closed region 25 and the second intermittent closed region 26; the third sub-region 43 is formed as the normally-on region 23 so that both the light of the first pixel unit 11 and the light of the second pixel unit 12 can pass through the third sub-region 43.
The light-shielding layer 5 of the normally closed region 24 may be a BM layer (Black Matrix) disposed outside the liquid crystal layer 6, and the thickness of the first substrate 271 and the second substrate 272 is usually 0.5mm to 0.7mm, and can be as thin as 0.1mm after thinning treatment, so that the design of the distance between the light-shielding layer 5 and the liquid crystal layer 6 is limited by the above dimensions.
Based on this, in the third embodiment of the present invention, two or more liquid crystal gratings are layered, so that the three-dimensional display can be realized, the respective structural designs of the two liquid crystal gratings are not affected by each other, and the selectable range of the thicknesses of the internal optical elements is large.
Specifically, as shown in fig. 6, in the third embodiment of the present invention, the grating member 2 includes the first liquid crystal grating 7 and the second grating 8, both the first liquid crystal grating 7 and the second grating 8 are disposed parallel to the display panel 1, and the first liquid crystal grating 7 and the second grating 8 are different in distance from the display panel 1, the first intermittent open region 25, the second intermittent open region 26 are formed on the first liquid crystal grating 7, and the normally closed region 24 is formed on the second grating 8. Such a structure arranges the normally-closed region 24 and the first and second intermittent- open regions 25 and 26 at intervals, and can eliminate the need to arrange electrodes on the normally-closed region 24 of the second grating 8 (such as by arranging a BM layer to block light), thereby making adjustment of the grating part 2 simpler.
It is understood that the distance between the first liquid crystal grating 7 and the second liquid crystal grating 8 and the display panel 1 can be adjusted according to design requirements.
Further, the first liquid crystal grating 7 includes: a first substrate 271, a second substrate 272, a liquid crystal layer 6, a plurality of first electrodes 281 and second electrodes 282 disposed on the first substrate 271, and a plurality of third electrodes 283 and fourth electrodes 284 disposed on the second substrate 272. The first liquid crystal grating 7 is divided into a plurality of partitions with the same structure, each partition is divided into a first sub-partition 41, a second sub-partition 42, a third sub-partition 43 and a fourth sub-partition 44, the first electrode 281 and the third electrode 283 are positioned in the second sub-partition 42, the second electrode 282 and the fourth electrode 284 are positioned in the fourth sub-partition 44, the electrodes in the second sub-partition 42 and the fourth sub-partition 44 are alternately applied with voltages to form the second sub-partition 42 into a first intermittent on-off region 25 and the fourth sub-partition 44 into a second intermittent on-off region 26, and the first sub-partition 41 and the third sub-partition 43 are formed into a normally-on region 23. The arrangement is such that the first pixel unit 11 and the second pixel unit 12 have a certain time difference when converging and feeding back to the pupil of the human eye after passing through the first intermittent closed region 25 and the second intermittent closed region 26.
Further, the second grating 8 includes: the liquid crystal display device comprises a first substrate 271, a second substrate 272, a liquid crystal layer 6 and a light shielding layer 5 arranged on the first substrate 271, wherein a plurality of light shielding layers 5 are distributed at intervals, the area where the light shielding layer 5 is located is a normally closed area 24, and the area located between the adjacent light shielding layers 5 is a normally open area 23. In this way, the light shielding layer 5 of the second grating 8 partially shields the light passing through the normally-open area 23 of the first liquid crystal grating 7, so that a preset light path effect is achieved, and the second grating 8 can adopt a common grating without filling liquid crystal, so that the production cost is reduced.
Optionally, the human eye may receive display content at a 60Hz refresh rate, such that the refresh rate of the monocular stereoscopic display 100 ensures that monocular stereoscopic display may be satisfied at 120 Hz. Of course, the refresh frequency of the monocular stereoscopic display 100 is not limited thereto, and the refresh frequency may be adjusted according to the display requirement.
In some embodiments of the present invention, the distance from the first pixel unit 11 to the light barrier member 2 and the distance from the second pixel unit 12 to the light barrier member 2 of the display panel 1 are 0.5mm to 1cm, the widths of the first pixel unit 11 and the second pixel unit 12 are a, the widths of the first intermittent open-close region 25 and the second intermittent open-close region 26 are b, and the widths of the normally-open region 23 and the normally-closed region 24 are c, wherein a is 1.2 to 1.5 times b and a is 3 to 6 times c. When the components in the monocular stereoscopic display 100 meet the parameter requirements, the purpose of monocular stereoscopic display can be achieved.
For example, when the diameter of the pupil of the human eye is about 2mm, and the distance from the pupil of the human eye to the display panel 1 is 300mm, the distance from the display panel 1 to the grating member 2 may be 1mm, the widths of the first pixel unit 11 and the second pixel unit 12 may be 60um, the widths of the first intermittent open-close region 25 and the second intermittent open-close region 26 may be 49.7um, and the widths of the normally open region 23 and the normally closed region 24 may be 10 um. The arrangement is such that the converging point of the light rays of the first pixel unit 11 and the second pixel unit 12 is in the pupil of the human eye.
In the actual production process, the liquid crystal component matched with the display panel is finally obtained through design and debugging, and the liquid crystal component is directly attached to the surface of the screen of the display panel as a pendant, so that the effect of monocular three-dimensional display can be achieved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, but do not indicate or imply that the structures or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.