CN115691383A - Display device and image display method thereof - Google Patents
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Abstract
The present application relates to a display device and a display method thereof. The display device comprises a display, a light guide assembly, a driving assembly and a control module, wherein the light guide assembly is arranged on the light emergent side of the display and is used for changing the emergent direction of emergent light rays of the display; the driving assembly is used for driving the light guide assembly to rotate around a rotating shaft parallel to the light emitting direction of the display; the control module is configured to divide an image to be displayed of the display into N images which are in one-to-one correspondence with the N visual angles, control the driving assembly to drive the light guide assembly to rotate, control the display to output the image corresponding to the current visual angle according to the current visual angle of the light guide assembly, and display the image along the emergent direction of the light guide assembly; wherein N is an integer and is not less than 2, and the images displayed by the light guide assembly at different viewing angles are different. The display device can realize the omnibearing continuous picture display and improve the use experience of users.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a display device and an image display method thereof.
Background
At present, three-dimensional display technologies are diversified, but most of the technologies are flat panel display, and only one-side three-dimensional display is adopted, so that three-dimensional display at each viewing angle of 360 degrees cannot be realized. If the display is directly rotated by 360 degrees, the problems of power supply and signal transmission exist, and most displays cannot rotate at high speed, so that the omnibearing continuous picture display cannot be realized.
Disclosure of Invention
The present application is directed to a display device and an image display method thereof, which can realize an omnidirectional coherent image display and improve the user experience.
In a first aspect, an embodiment of the present application provides a display device, including a display, where the display is used for emitting light to display an image, and the display device further includes: the light guide assembly is arranged on the light emergent side of the display and used for changing the emergent direction of emergent light of the display; the driving component is used for driving the light guide component to rotate around a rotating shaft parallel to the light emitting direction of the display; the control module is electrically connected with the display and the driving assembly, and is configured to divide an image to be displayed of the display into N images which are in one-to-one correspondence with N visual angles, control the driving assembly to drive the light guide assembly to rotate, control the display to output the image corresponding to the current visual angle according to the current visual angle of the light guide assembly, and display the image along the emergent direction of the light guide assembly; wherein N is an integer and is not less than 2, and the images displayed by the light guide assembly at different viewing angles are different.
In a possible embodiment, the light guide assembly includes a first optical element and a second optical element sequentially disposed along a light emitting direction of the display, and the first optical element and the second optical element rotate around a same rotation axis, wherein a light ray emitted from the display passes through the first optical element and then enters the second optical element by rotating 180 °, and a light ray emitted from the second optical element exits along a first direction perpendicular to the light emitting direction of the display.
In one possible embodiment, the first optical element is a dove prism, the second optical element is a right-angle prism or a mirror disposed at an angle of 45 ° to the rotation axis, the rotation axis coincides with the optical axes of the first optical element and the second optical element, and the rotation speed of the first optical element is ω 1 and the rotation speed of the second optical element is ω 2, then ω 2=2 × ω 1.
In one possible embodiment, the rotation frequency of the second optical element is F, the image refresh frequency of the display is F, and F = M × N × F, where M is an integer greater than 0, and F = ω 2/(2 × pi).
In a possible embodiment, the display device further includes a lens set disposed between the display and the light guide assembly for magnifying or reducing an image output by the display; or the lens group is arranged on the emergent surface of the light guide component and used for amplifying the image output by the display, wherein the lens group comprises a first lens and a second lens which are arranged at intervals, the first lens is arranged close to the emergent surface of the light guide component, and the emergent surface of the second lens is provided with a holographic film.
In a possible embodiment, a privacy film is disposed on any one of the light-emitting surface of the display, the light-emitting surface of the light guide assembly, and the holographic film.
In one possible embodiment, the control module comprises: the rotation driving unit is configured to control the driving assembly to drive the light guide assembly to rotate at an angle and a rotating speed, calculate the current visual angle of the light guide assembly and a corresponding time sequence signal, and send the time sequence signal to the display; the image processing unit is configured to divide an image to be displayed of the display into N images corresponding to N visual angles in a one-to-one mode, receive current visual angle information of the light guide assembly sent by the rotation driving unit, and send the image information corresponding to the current visual angle to the display, so that the display outputs the corresponding image at the time corresponding to the time sequence signal.
In one possible embodiment, the drive assembly includes a motor, a reducer connected to an output shaft of the motor, the reducer including any one of a multi-stage transmission gear, a transmission pulley, and a transmission sprocket.
In one possible embodiment, the display is any one of an organic electroluminescent diode display panel, a liquid crystal display, a micro light emitting diode display, a sub-millimeter light emitting diode display, and a quantum dot light emitting diode display.
In a second aspect, embodiments of the present application further provide an image display method of any one of the display apparatuses described above, including: dividing an image to be displayed of a display into N images which correspond to N visual angles one by one; the driving component is controlled to drive the light guide component to rotate; calculating a time sequence signal corresponding to the current visual angle of the light guide assembly; and controlling the display to output corresponding images at the time corresponding to the time sequence signal, and displaying the images along the emergent direction of the light guide assembly, wherein N is an integer and is not less than 2, and the images displayed by the light guide assembly at different visual angles are different.
According to the display device and the image display method thereof provided by the embodiment of the application, the light guide assembly, the driving assembly for driving the light guide assembly to rotate and the control module electrically connected with the display and the driving assembly are arranged on the light emergent side of the display, the control module can divide an image to be displayed of the display into N images which are in one-to-one correspondence with N visual angles, and can also control the driving assembly to drive the light guide assembly to rotate, control the display to output the image corresponding to the current visual angle according to the current visual angle of the light guide assembly, and display the image along the emergent direction of the light guide assembly; wherein N is an integer and is not less than 2, and the images displayed by the light guide assembly at different viewing angles are different. By the arrangement, the display device can realize all-around coherent picture display, and the use experience of a user is improved.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, like parts are provided with like reference numerals. The drawings are not necessarily to scale, and are merely intended to illustrate the relative positions of the layers, the thicknesses of the layers in some portions being exaggerated for clarity, and the thicknesses in the drawings are not intended to represent the proportional relationships of the actual thicknesses.
Fig. 1 is an exploded schematic view of a display device according to a first embodiment of the present disclosure;
FIG. 2 is an exploded view of the display device shown in FIG. 1 from a second viewing angle;
fig. 3 is a schematic view showing a structure of a display in the display device shown in fig. 1;
fig. 4 is an exploded view of a display device according to a second embodiment of the present disclosure;
FIG. 5 is an exploded view of the display device shown in FIG. 4 from a second viewing angle;
fig. 6 is a flow chart illustrating an image display method of a display device according to a third embodiment of the present application.
Description of reference numerals:
1. a display; x-a first direction; y-the light-emitting direction; an L-optical axis;
2. a light guide assembly; 21. a first optical element; 22. a second optical element;
5. a lens group; 6. a peep-proof membrane;
100. an array substrate; 10. a substrate base plate; 16. a pixel electrode; 200. a color film substrate; 201. a color film substrate; 202. a common electrode; 300. a liquid crystal layer; 400. a backlight module is provided.
Detailed Description
Features of various aspects of the present application and exemplary embodiments will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present application; also, the size of the region structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The application aims at providing a display device, can be applied to public places such as exhibition hall, recreation ground to show relevant information, a plurality of users of being convenient for see coherent picture display from different perspectives, improve user's use and experience. The following describes in detail a specific structure of a display device provided in each embodiment with reference to the drawings.
First embodiment
Fig. 1 is an exploded schematic view of a display device according to a first embodiment of the present disclosure; fig. 2 is an exploded view of the display device shown in fig. 1 from a second viewing angle.
As shown in fig. 1 and 2, a first embodiment of the present application provides a display device, which includes a display 1, a light guide assembly 2, a driving assembly (not shown), and a control module (not shown).
The display 1 is used to emit light to display an image. The light guide assembly 2 is disposed on the light emitting side of the display 1 and used for changing the emitting direction of the emitted light of the display 1, and the driving assembly is used for driving the light guide assembly 2 to rotate around a rotating shaft parallel to the light emitting direction of the display 1.
The control module is electrically connected with the display 1 and the driving assembly, and is configured to divide an image to be displayed of the display 1 into N images which are in one-to-one correspondence with N visual angles, control the driving assembly to drive the light guide assembly 2 to rotate, control the display 1 to output the image corresponding to the current visual angle according to the current visual angle of the light guide assembly 2, and display the image along the emergent direction of the light guide assembly 2; wherein, N is an integer and is not less than 2, and the images displayed by the light guide component 2 at different viewing angles are different.
As shown in fig. 1 and 2, the control module is configured to divide an image to be displayed of the display 1 into two images corresponding to two viewing angles in a one-to-one manner, wherein an angle corresponding to each viewing angle is 180 °, and an angle between light emitting sides of the light guide assemblies 2 corresponding to each viewing angle is 180 °. As shown in fig. 1, the light-emitting side of the first viewing angle lower light guide assembly 2 faces to the left, and as shown in fig. 2, the light-emitting side of the second viewing angle lower light guide assembly 2 faces to the right.
When the image displayed by the display 1 is not changed, in the process that the driving assembly drives the light guide assembly 2 to rotate for one circle along the direction shown by the arrow in fig. 1 or fig. 2, the image displayed on the light emitting side of the light guide assembly 2 viewed from any viewing angle by the user is the same. When the display 1 displays different image frames according to a predetermined image refresh frequency, in the process that the driving assembly drives the light guide assembly 2 to rotate for one circle, the image frames displayed on the light emitting side of the light guide assembly 2, which are viewed by a user from different viewing angles, are different. For example, when the image displayed on the display 1 is an exhibit, the user can see a two-dimensional front view of the exhibit from a first viewing angle, and a two-dimensional back view of the exhibit from a second viewing angle.
Further, when the driving assembly drives the light guide assembly 2 to rotate at a high speed and the display 1 displays different image pictures according to the preset image refreshing frequency, in the process that the light guide assembly 2 rotates for a circle, a full-view three-dimensional image within a 360-degree range can be realized according to the binocular vision principle, depth information which cannot be presented by common two-dimensional images can be provided, objects and scenes can be reproduced more truly, and the vision habit of human eyes is better met.
In addition, when human eyes observe a scene, light signals are transmitted into cerebral nerves, a short time is needed, and after the action of light is finished, the visual image does not disappear immediately. Vision is actually imaged by the lens of the eye, and the photoreceptor cells sense light and convert the light signals into nerve currents which are transmitted back to the brain to cause human vision. When the object moves rapidly, after the image seen by human eyes disappears, the human eyes can still keep the image of the image for about 0.1-0.4 second, and the phenomenon is called Visual persistence phenomenon (Visual persistence phenomenon).
Therefore, in this embodiment, when the image refresh frequency of the display 1 exceeds the persistence effect of human vision at a certain viewing angle, the dynamic full-viewing-angle holographic three-dimensional image display can be realized. For example, the user can see the process of pouring the tea set exhibit from the first visual angle, and the user can see the process of changing the tea set exhibit from the inclined state to the upright state from the second visual angle.
It can be understood that, when the control module is configured to divide the image to be displayed on the display 1 into more images corresponding to more viewing angles one to one, and when the image frame changes, the user may also see more image information from more viewing angles, which may be a two-dimensional image, a three-dimensional dynamic image, or a three-dimensional holographic image, and details are not repeated.
According to the display device provided by the embodiment of the application, the light guide component 2, the driving component for driving the light guide component 2 to rotate and the control module electrically connected with the display 1 and the driving component are arranged on the light emergent side of the display 1, the control module can divide an image to be displayed of the display 1 into N images in one-to-one correspondence with N visual angles, and can also control the driving component to drive the light guide component 2 to rotate, control the display 1 to output the image corresponding to the current visual angle according to the current visual angle of the light guide component 2, and display the image along the emergent direction of the light guide component 2; wherein, N is an integer and is not less than 2, and the images displayed by the light guide component 2 at different viewing angles are different. By the arrangement, the display device can realize all-around coherent picture display, and the use experience of a user is improved.
In some embodiments, the light guide assembly 2 includes a first optical element 21 and a second optical element 22 sequentially disposed along the light emitting direction of the display 1, and the first optical element 21 and the second optical element 22 rotate around the same rotation axis, wherein the light emitted from the display 1 passes through the first optical element 21 and then rotates 180 ° to enter the second optical element 22, and the light emitted from the second optical element 22 exits along a first direction X, which is perpendicular to the light emitting direction of the display 1.
As shown in fig. 1, the light emitting direction Y of the display 1 is a vertical direction, and the first direction X is perpendicular to the light emitting direction Y of the display 1, that is, the first direction X is a horizontal direction. After passing through the first optical element 21, the light emitted from the display 1 rotates the image by 180 °, and then after passing through the second optical element 22, the image continues to rotate by 90 °, and finally the image is emitted in the first direction X perpendicular to the light emitting direction Y of the display 1, so that more users can watch coherent picture display from various viewing angles.
Further, the first optical element 21 is a dove prism, the second optical element 22 is a right-angle prism or a mirror disposed with an inclination of 45 ° to the rotation axis, the rotation axis coincides with the optical axis L of the first optical element 21 and the second optical element 22, and the rotation speed of the first optical element is ω 1 and the rotation speed of the second optical element is ω 2, then ω 2=2 × ω 1.
The first optical element 21 is a dove prism, which realizes total internal reflection by using the critical angle principle. The light emerging from the display 1 is inverted 180 after passing through the dove prism. When the dove prism rotates with the optical axis L thereof as a rotation axis, the rotation angle of the image is twice as large as that of the dove prism.
The second optical element 22 is a right-angle prism or a mirror disposed at an angle of 45 ° with respect to the rotation axis, and can rotate the image that is inverted by 180 ° by 90 ° and emit the image from the light-emitting surface of the second optical element 22. In order to keep the synchronism of the display screen, the rotation speed of the second optical element is twice of that of the first optical element.
Further, if the rotation frequency of the second optical element 22 is F and the image refresh frequency of the display is F, then F = M × N × F, where M is an integer greater than 0, and F = ω 2/(2 × pi).
For example, the rotation frequency F of the second optical element 22 is ≧ 20 revolutions/sec, the number of viewing angles N =2, and the image refresh frequency F corresponding to the display 1 is an integral multiple of 40 revolutions/sec. That is, by setting the rotation speed of the light guide assembly 2, the picture with direction correlation can be converted into a picture with time correlation, and the picture can be refreshed repeatedly, so that the user can see a corresponding frame or M frames of pictures from each viewing angle, and different dynamic pictures can be displayed at each viewing angle of 360 degrees.
In some embodiments, the display device further comprises a lens assembly 5, wherein the lens assembly 5 is disposed between the display 1 and the light guide assembly 2, and is used for magnifying or reducing an image output by the display 1.
The lens assembly 5 may enhance the imaging of the display device, for example, the lens assembly 5 may be a lenticular lens for magnifying the image output by the display 1, which facilitates the user to view the details of the image. The lens assembly 5 may also be used to reduce the image output by the display 1, thereby improving the display brightness.
In order to reduce the overall size of the display device, a small display with high brightness may be used in combination with the light guide assembly 2 and the lens assembly 5 with small sizes, and the image may be displayed in a projection mode.
Specifically, the lens assembly 5 is disposed on the exit surface of the light guide assembly 2 for magnifying the image output by the display 1, wherein the lens assembly 5 includes a first lens and a second lens disposed at an interval, the first lens is disposed close to the exit surface of the light guide assembly 2, and the light exit surface of the second lens is disposed with a holographic film.
The holographic film is a practical application of a comprehensive diffraction pattern (hologram) technology, can transmit the projection film of the front side and the back side to directly watch images at multiple angles (360 degrees) at the same time no matter whether a light source is sufficient, has unique high-definition transparent developing characteristics, and can form crystal clear vision. The visual information can be transmitted with high quality, and meanwhile, the display of the on-site exhibit can not be hindered.
The lens group 5 is disposed on the exit surface of the second optical element 22, and can magnify the image output by the display 1, so that the magnified small image output by the display 1 can be projected on the holographic film on the second lens, and the effect of realizing large output projection by a small display screen can be realized.
In some embodiments, the control module includes a rotation driving unit and an image processing unit.
The rotation driving unit is configured to control the driving assembly to drive the light guide assembly 2 to rotate at an angle and a rotation speed, calculate the current viewing angle of the light guide assembly 2 and a corresponding time sequence signal, and send the time sequence signal to the display 1.
The image processing unit is configured to divide an image to be displayed on the display 1 into N images corresponding to the N viewing angles one by one, receive current viewing angle information of the light guide assembly 2 sent by the rotation driving unit, and send the image information corresponding to the current viewing angle to the display 1, so that the display 1 outputs the corresponding image at a time corresponding to the timing signal.
In some embodiments, the drive assembly includes a motor, a reducer connected to an output shaft of the motor, the reducer including any one of a multi-stage transmission gear, a transmission pulley, and a transmission sprocket. The light guide assembly 2 rotates according to a preset rotation speed through the speed reduction and torque increase of the speed reducer. The driving component may be disposed on one side of the light guide component 2 or at other positions, which is not limited herein.
It will be appreciated that the display device further comprises a housing (not shown in the figures) in which the display 1, the light guiding assembly 2, the driving assembly and the control module are respectively accommodated. The housing may have any shape to enhance the aesthetic appearance of the display device.
In some embodiments, the display 1 is any one of an organic electroluminescent diode (OLED) display panel, a Liquid Crystal Display (LCD), a Micro light emitting diode display (Micro-LED), a sub-millimeter light emitting diode display (Mini-LED), and a quantum dot light emitting diode display.
Fig. 3 is a schematic view showing a structure of a display in the display device shown in fig. 1.
As shown in fig. 3, the display 1 is a liquid crystal display, and includes a liquid crystal display panel and a backlight module 400 disposed on a backlight surface thereof, and since the liquid crystal display panel is a non-emissive light receiving element, a light source needs to be provided through the backlight module 400. The liquid crystal display panel includes an array substrate 100, a color filter substrate 200 and a liquid crystal layer 300 between the array substrate 100 and the color filter substrate 200. The liquid crystal layer 300 includes a plurality of liquid crystal molecules, which are generally rod-shaped, and both flow like a liquid and have certain crystalline characteristics. When liquid crystal molecules are placed in an electric field, their alignment direction changes according to the change of the electric field.
The transparent pixel electrode 16 is disposed on the substrate 10 of the array substrate 100, the color filter substrate 200 includes a color filter substrate 201 and a common electrode 202 disposed on the color filter substrate 201, and when the thin film transistor of the array substrate 100 is turned on by a signal applied to the gate electrode, a signal applied to the data line is applied to the pixel electrode 16. Thereby, an electric field of a predetermined intensity is generated between the pixel electrode 16 and the common electrode 202, and the alignment of the liquid crystal molecules can be changed by applying different voltages, thereby adjusting the transmittance of light and displaying an image.
Second embodiment
Fig. 4 is an exploded view of a display device according to a second embodiment of the present application along a first viewing angle; fig. 5 is an exploded view of the display device shown in fig. 4 from a second viewing angle.
The second embodiment of the present application further provides a display device, which has a similar structure to the display device provided in the first embodiment, except that a privacy film 6 is disposed on any one of the light-emitting surface of the display 1, the light-emitting surface of the light guide assembly 2, and the holographic film.
As shown in fig. 4 and 5, in an example, the peep-proof film 6 is disposed on the exit surface of the light guide assembly 2, that is, the exit surface of the second optical element 22, so that the collimation of the image light to each direction can be improved, the mutual interference between images at different viewing angles can be avoided, the light-emitting effect can be ensured, and the display power consumption can be reduced.
In another example, the anti-peeping film 6 is disposed on the light exit surface of the display 1.
In another example, the lens assembly 5 is disposed on the exit surface of the light guide assembly 2 for magnifying the image output by the display 1, wherein the lens assembly 5 includes a first lens and a second lens which are disposed at an interval, the first lens is disposed near the exit surface of the light guide assembly 2, and the light exit surface of the second lens is disposed with a holographic film. The peep-proof membrane 6 is arranged on the holographic film, so that the display effect of realizing large-output projection by a small display screen is further improved.
Third embodiment
Fig. 6 is a flow chart illustrating an image display method of a display device according to a third embodiment of the present application.
As shown in fig. 6, the image display method of the display device according to the third embodiment of the present application includes the following steps S1 to S4. In particular, the present invention relates to a method for producing,
step S1: dividing an image to be displayed of the display 1 into N images corresponding to N visual angles one by one;
step S2: the driving component is controlled to drive the light guide component 2 to rotate;
and step S3: calculating a time sequence signal corresponding to the current visual angle of the light guide assembly 2;
and step S4: and controlling the display 1 to output a corresponding image at a time corresponding to the timing signal, and displaying the image along the emergent direction of the light guide assembly 2, wherein N is an integer and is not less than 2, and the images displayed by the light guide assembly 2 at different viewing angles are different.
In addition, by setting the rotating speed of the light guide assembly 2, the picture with direction correlation can be converted into a picture with time correlation, and the picture is refreshed repeatedly, so that a user can see a corresponding frame or M frames of pictures from each visual angle, and different dynamic pictures can be displayed at each visual angle of 360 degrees. The dynamic picture can be a two-dimensional image, a three-dimensional dynamic image, or a three-dimensional holographic image, and is not described again.
According to the image display method of the display device provided by the embodiment of the application, the image to be displayed of the display 1 is divided into N images which are in one-to-one correspondence with N visual angles, the light guide component 2 is driven to rotate by controlling the driving component, the display 1 is controlled to output the image corresponding to the current visual angle according to the current visual angle of the light guide component 2, and the image is displayed along the emergent direction of the light guide component 2; wherein, N is an integer and is not less than 2, and the images displayed by the light guide component 2 at different viewing angles are different. By the arrangement, the display device can realize all-around coherent picture display, and the use experience of a user is improved.
It should be readily understood that "on … …", "above … …" and "above … …" in this application should be interpreted in the broadest manner such that "on … …" means not only "directly on something", but also "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning of "above" or "on" something, but also the meaning of "above" or "on" without intermediate features or layers therebetween (i.e., directly on something).
The term "substrate" as used herein refers to a material upon which subsequent layers of material are added. The substrate base plate itself may be patterned. The material added atop the substrate base plate may be patterned or may remain unpatterned. Further, the substrate base plate may comprise a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, and the like. Alternatively, the substrate base plate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafer, etc.).
The term "layer" as used herein may refer to a portion of material that includes a region having a thickness. A layer may extend over the entire underlying or overlying structure or may have a smaller extent than the underlying or overlying structure. Furthermore, a layer may be a region of a continuous structure, homogeneous or heterogeneous, having a thickness less than the thickness of the continuous structure. For example, a layer may be located between the top and bottom surfaces of the continuous structure or between any pair of lateral planes at the top and bottom surfaces. The layers may extend laterally, vertically, and/or along a tapered surface. The substrate base may be a layer, may include one or more layers therein, and/or may have one or more layers located thereon, above and/or below. The layer may comprise a plurality of layers. For example, the interconnect layer may include one or more conductors and contact layers (within which contacts, interconnect lines, and/or vias are formed) and one or more dielectric layers.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A display device comprising a display for emitting light to display an image, the display device further comprising:
the light guide assembly is arranged on the light emergent side of the display and used for changing the emergent direction of emergent light rays of the display;
the driving component is used for driving the light guide component to rotate around a rotating shaft parallel to the light emitting direction of the display; and
the control module is electrically connected with the display and the driving assembly, and is configured to divide an image to be displayed of the display into N images which are in one-to-one correspondence with N visual angles, control the driving assembly to drive the light guide assembly to rotate, control the display to output the image corresponding to the current visual angle according to the current visual angle of the light guide assembly, and display the image along the emergent direction of the light guide assembly;
wherein N is an integer and is not less than 2, and the images displayed by the light guide assembly at different viewing angles are different.
2. The display device according to claim 1, wherein the light guide assembly comprises a first optical element and a second optical element sequentially arranged along a light emitting direction of the display, the first optical element and the second optical element rotate around the same rotation axis, wherein light emitted from the display passes through the first optical element and then enters the second optical element by rotating 180 °, and light emitted from the second optical element exits along a first direction perpendicular to the light emitting direction of the display.
3. The display device according to claim 2, wherein the first optical element is a dove prism, the second optical element is a right-angle prism or a mirror disposed with an inclination of 45 ° from the rotational axis, the rotational axis coincides with the optical axes of the first optical element and the second optical element, the rotational speed of the first optical element is ω 1, the rotational speed of the second optical element is ω 2, and then ω 2=2 × ω 1.
4. A display device as claimed in claim 3, wherein the rotation frequency of the second optical element is F, the image refresh frequency of the display is F, then F = M × N × F, where M is an integer greater than 0, and F = ω 2/(2 × pi).
5. The display device according to claim 1, further comprising a lens group disposed between the display and the light guide assembly for enlarging or reducing an image output from the display;
or the lens group is arranged on the emergent surface of the light guide component and is used for amplifying the image output by the display, wherein the lens group comprises a first lens and a second lens which are arranged at intervals, the first lens is arranged close to the emergent surface of the light guide component, and the emergent surface of the second lens is provided with a holographic film.
6. The display device according to claim 5, wherein a privacy film is disposed on any one of the light exit surface of the display, the light guide member and the holographic film.
7. The display device according to claim 1, wherein the control module comprises:
the rotation driving unit is configured to control the driving assembly to drive the light guide assembly to rotate at an angle and a rotating speed, calculate the current visual angle of the light guide assembly and a corresponding time sequence signal thereof, and send the time sequence signal to the display;
the image processing unit is configured to divide an image to be displayed of the display into N images in one-to-one correspondence with N visual angles, receive current visual angle information of the light guide assembly sent by the rotation driving unit, and send image information corresponding to the current visual angle to the display, so that the display outputs a corresponding image at a time corresponding to the time sequence signal.
8. The display device according to claim 1, wherein the driving assembly includes a motor, a decelerator connected to an output shaft of the motor, the decelerator including any one of a multi-stage transmission gear, a transmission pulley, and a transmission sprocket.
9. The display device of claim 1, wherein the display is any one of an organic electroluminescent diode display panel, a liquid crystal display, a micro light emitting diode display, a sub-millimeter light emitting diode display, and a quantum dot light emitting diode display.
10. An image display method of a display device according to any one of claims 1 to 9, comprising:
dividing an image to be displayed of a display into N images which correspond to N visual angles one by one;
the driving component is controlled to drive the light guide component to rotate;
calculating a time sequence signal corresponding to the current visual angle of the light guide assembly;
and controlling the display to output a corresponding image at the time corresponding to the time sequence signal, and displaying the image along the emergent direction of the light guide assembly, wherein N is an integer and is not less than 2, and the images displayed by the light guide assembly at different visual angles are different.
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| CN115691383B (en) | 2023-12-22 |
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