Stereoscopic display device and imaging control method thereof

Abstract

The application relates to a stereoscopic display device and an imaging control method thereof, and relates to the technical field of spatial imaging display, and aims to provide a stereoscopic display device capable of expanding a visual angle and reducing visual fatigue. The stereoscopic display device comprises a plurality of pixel units and a light-emitting unit. The pixel unit comprises a pixel cavity, a liquid storage tank, a first electrode and a second electrode. A base liquid is arranged in the pixel cavity and the liquid storage tank, the liquid storage tank is communicated with the pixel cavity, an electrowetting liquid and diffusion particles are arranged in the base liquid, the electrowetting liquid and the base liquid are mutually insoluble, and the diffusion particles are affinity to the electrowetting liquid and repel the base liquid. The first electrode is arranged in the liquid storage tank, and the second electrode is arranged on at least one side of the pixel cavity, the first electrode and the second electrode are configured to control the electrowetting liquid to drive the diffusion particles to switch and move between the pixel cavity and the liquid storage tank. The light-emitting unit is configured to irradiate light rays towards the corresponding pixel cavity, so that the diffusion particles in the pixel cavity scatter the light rays.

Description

Technical Field

[0001] This application relates to the field of spatial imaging display technology, and in particular to a stereoscopic display device and its imaging control method. Background Technology

[0002] With the continuous development of information display technology, users' demands for visual experience have gradually shifted from two-dimensional planar displays to three-dimensional spatial displays, aiming to obtain more realistic and immersive interactive effects. However, current mainstream three-dimensional display technologies, such as stereoscopic display systems based on the grating principle, mainly synthesize three-dimensional images in the human brain by creating binocular parallax. This technology relies on the rectilinear propagation characteristics of light, resulting in an extremely limited viewing angle for the generated three-dimensional image. Users can only observe the stereoscopic effect within a specific viewing range, and the stereoscopic effect quickly disappears once the viewing angle shifts. At the same time, because the images received by each eye differ, the brain needs to continuously fuse these images to form a three-dimensional perception. Prolonged viewing can easily cause visual fatigue, dry eyes, headaches, and other discomfort symptoms, and in severe cases, even affect the user's health. In addition, existing technologies cannot achieve uniform light emission from every point in the displayed image in all directions of space, resulting in a significant directional nature of the light, failing to realistically simulate the natural light emission characteristics of real objects in space, and thus making it difficult to reproduce the human eye's recognition process of the real world. Therefore, there is an urgent need to develop a new type of three-dimensional stereoscopic display device that can enable each display point to emit non-directional light, effectively expanding the viewing angle and reducing visual fatigue. Summary of the Invention

[0003] This application provides a stereoscopic display device and its imaging control method, aiming to provide a stereoscopic display device that can expand the viewing angle and reduce visual fatigue.

[0004] In a first aspect, embodiments of this application provide a stereoscopic display device, including multiple pixel units and a light-emitting unit. Each pixel unit includes a pixel cavity, a liquid reservoir, a first electrode, and a second electrode. A base liquid is disposed within the pixel cavity and the liquid reservoir, with the liquid reservoir communicating with the pixel cavity. Electrowetting liquid diffusion particles are disposed within the base liquid. The electrowetting liquid and the base liquid are immiscible, and the diffusion particles are attracted to the electrowetting liquid and repel the base liquid. The first electrode is disposed within the liquid reservoir, and a second electrode is disposed on at least one side of the pixel cavity. The first and second electrodes are configured to control the electrowetting liquid to move the diffusion particles between the pixel cavity and the liquid reservoir. The light-emitting unit is configured to irradiate light toward the corresponding pixel cavity, causing the diffusion particles within the pixel cavity to scatter the light.

[0005] In some embodiments, the pixel cavity and the liquid storage tank extend along a first direction, and the opening between the pixel cavity and the liquid storage tank extends along the first direction. There are multiple first electrodes, which are sequentially arranged within the liquid storage tank along the first direction.

[0006] In some embodiments, the pixel cavity has a rectangular cross-sectional shape perpendicular to the first direction. A liquid reservoir is provided at at least one included angle of the pixel cavity within the plane perpendicular to the first direction.

[0007] In some embodiments, multiple pixel cavities are arranged in a matrix structure in a plane perpendicular to the first direction. A liquid storage tank is provided at the intersection of four adjacent pixel cavities, and each pixel cavity is connected to at least one liquid storage tank.

[0008] In some implementations, at least one second electrode is disposed at each edge of the pixel cavity in a plane perpendicular to the first direction.

[0009] In some embodiments, the second electrode extends along the first direction.

[0010] In some embodiments, the pixel cavity extends along a first direction, and the liquid storage tank has multiple spaced sub-slots along the first direction. There are multiple first electrodes, and at least one first electrode is disposed in each sub-slot of the liquid storage tank along the first direction.

[0011] In some embodiments, the pixel cavity has multiple spaced sub-cavities along a first direction, and the liquid storage tank extends along the first direction. There are multiple first electrodes, which are sequentially arranged along the first direction.

[0012] In some implementations, the transmittance of the pixel cavity, base liquid, electrowetting liquid, and second electrode is greater than or equal to 80%.

[0013] In some implementations, the transmittance of the diffusing particles is 30-80%, and the scattering rate of the diffusing particles is 15-65%.

[0014] In some embodiments, the light-emitting unit includes a first light source panel, a second light source panel, and a third light source panel. The first light source panel is disposed on one side of a plurality of pixel units along a first direction. In a plane perpendicular to the first direction, the first light source panel has a plurality of first pixel light sources arranged in a matrix, and the plurality of pixel units are arranged in a matrix structure, with each first pixel light source corresponding to a pixel unit. The second light source panel is disposed on one side of the plurality of pixel units along a second direction. In a plane perpendicular to the second direction, the second light source panel has a plurality of second pixel light sources arranged in a matrix. The third light source panel is disposed on one side of the plurality of pixel units along a third direction. In a plane perpendicular to the third direction, the third light source panel has a plurality of third pixel light sources arranged in a matrix. The first, second, and third pixel light sources are red, green, and blue light sources, respectively, and the first, second, and third directions are perpendicular to each other.

[0015] Secondly, this application provides an imaging control method for a stereoscopic display device, applied to the stereoscopic display device of the first aspect, the imaging control method comprising the following steps:

[0016] The stereo image is divided into multiple sub-frame images. In each sub-frame image, a pixel light source of the light-emitting unit illuminates the diffusion particles in a pixel cavity along a straight line.

[0017] Within the first time period, the diffusion particles are moved to the corresponding pixel cavity according to a subframe image, and the light-emitting unit is controlled to illuminate the diffusion particles in the corresponding pixel cavity.

[0018] Within multiple first durations, the pixel unit and the light-emitting unit are controlled to sequentially present the corresponding sub-frame image, and the sum of multiple first durations within a stereo image is less than 62.5 milliseconds.

[0019] In some implementations, the subframe image includes at least one pixel coordinate and the ratio of the three-color light source corresponding to that pixel coordinate.

[0020] Within the first time period, the steps of controlling the diffusion particles to move into the corresponding pixel cavity based on a subframe image and controlling the light-emitting unit to illuminate the diffusion particles in the corresponding pixel cavity include:

[0021] The first electrode corresponding to the pixel coordinate is de-energized, and the second electrode corresponding to the pixel is energized, so that the diffusion particles move into the corresponding pixel cavity.

[0022] The pixel cavity at the pixel coordinate is illuminated by the first, second, and third pixel light sources according to the pixel coordinates and the corresponding ratio of the three-color light sources.

[0023] After a preset time, the first pixel light source, the second pixel light source, and the third pixel light source are turned off, and the second electrode at the pixel coordinate is de-energized while the first electrode is energized.

[0024] The technical solutions provided in this application have the following advantages compared with the prior art:

[0025] By connecting the liquid reservoir to the pixel cavity, when imaging is required, the first electrode is de-energized while the second electrode in the pixel cavity is energized. This causes the electrowetting liquid in the reservoir to move and diffuse towards the energized second electrode, thus transferring the electrowetting liquid and diffusion particles into the pixel cavity. This allows the light-emitting unit to illuminate the diffusion particles within the pixel cavity, resulting in a better stereoscopic imaging effect. Within the reservoir, if the first electrode remains energized and the second electrode is de-energized, the electrowetting liquid and internal diffusion particles converge towards the first electrode, confining them within the reservoir to prevent interference with the imaging of other pixels.

[0026] Thus, when the diffused particles are introduced into the pixel cavity and illuminated by the light-emitting unit, they can effectively scatter light, thereby forming independent, non-directional light-emitting points in three-dimensional space. This design overcomes the problems of limited viewing angle and easy visual fatigue in traditional lenticular 3D display technology, providing viewers with a more natural, comfortable and healthy 3D visual experience, more realistically simulating the display state of objects in real space, and meeting the needs of wide-angle and even all-around viewing angle experiences. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0030] Figure 1 This is a three-dimensional structural diagram of a stereoscopic display device provided in an embodiment of this application;

[0031] Figure 2 for Figure 1 A top view of the pixel unit shown;

[0032] Figure 3 for Figure 2 A schematic diagram of the internal structure of the liquid storage tank shown in the figure;

[0033] Figure 4 for Figure 1 Another top view of the pixel unit shown;

[0034] Figure 5 for Figure 2 A schematic diagram of a three-dimensional structure of the pixel unit shown;

[0035] Figure 6 for Figure 4 A schematic diagram of a three-dimensional structure of the pixel unit shown;

[0036] Figure 7 A flowchart of an imaging control method for a stereoscopic display device provided in this application embodiment;

[0037] Figure 8 A flowchart illustrating an imaging control method for another stereoscopic display device provided in this application embodiment;

[0038] Figure 9 This is a schematic diagram of the connection structure of a control module provided in an embodiment of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100, Pixel unit; 110, Pixel cavity; 120, Liquid reservoir; 130, First electrode; 140, Second electrode; 200, Light-emitting unit; 210, First light source panel; 211, First pixel light source; 220, Second light source panel; 221, Second pixel light source; 230, Third light source panel; 231, Third pixel light source; 300, Control module; 310, Processor; 320, Communication interface; 330, Memory; 340, Communication bus; Z, First direction; Y, Second direction; X, Third direction. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0043] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0044] Please see Figures 1 to 9 This application provides a stereoscopic display device and its imaging control method, aiming to provide a stereoscopic display device that can expand the viewing angle and reduce visual fatigue.

[0045] Firstly, this application provides a stereoscopic display device, such as... Figure 1 As shown, it includes multiple pixel units 100 and light-emitting units 200. (Refer to...) Figure 2 and Figure 3 The pixel unit 100 includes a pixel cavity 110, a liquid reservoir 120, a first electrode 130, and a second electrode 140. A base liquid is disposed within the pixel cavity 110 and the liquid reservoir 120, with the liquid reservoir 120 communicating with the pixel cavity 110. The base liquid contains an electrowetting liquid and diffusion particles. The electrowetting liquid and the base liquid are immiscible, and the diffusion particles are attracted to the electrowetting liquid and repel the base liquid. The first electrode 130 is disposed within the liquid reservoir 120, and the second electrode 140 is disposed on at least one side of the pixel cavity 110. The first electrode 130 and the second electrode 140 are configured to control the electrowetting liquid to move the diffusion particles between the pixel cavity 110 and the liquid reservoir 120. The light-emitting unit 200 is configured to irradiate light toward the corresponding pixel cavity 110, causing the diffusion particles within the pixel cavity to scatter the light.

[0046] By filling the pixel cavity 110 and the reservoir 120 with immiscible base liquid and electrowetting liquid, a clear interface is formed between them. The diffusing particles are configured to be affinity-friendly to the electrowetting liquid and repulsive to the base liquid, ensuring that the diffusing particles closely follow the diffusion of the electrowetting liquid. This allows for flexible adjustment of the positional state of the electrowetting liquid and the diffusing particles by controlling the states of the first electrode 130 and the second electrode 140. Thus, the base liquid serves as the environment for the movement and switching of the diffusing particles, facilitating flexible control of the electrowetting liquid to move and switch the internal diffusing particles between the pixel cavity 110 and the reservoir 120 via electric fields, magnetic fields, or other methods. When imaging is required, the electrowetting liquid and diffusing particles are controlled to move into the pixel cavity 110, and the diffusing particles diffuse the irradiated light to achieve multi-angle imaging display with good color reproduction.

[0047] The base liquid should have high transmittance, such as more than 80%. Alternatively, the transmittance of the base liquid can be set to 85%, 90%, or 95% or higher to avoid affecting the imaging quality and effect of the diffused particles within the base liquid.

[0048] The electrowetting fluid should also have high transmittance, such as above 80%. Alternatively, the transmittance of the electrowetting fluid can be set to 85%, 90%, or 95% or higher to avoid affecting the imaging quality and effect of the diffused particles within the electrowetting fluid.

[0049] The pixel cavity is the core area where light passes through and is scattered. The pixel cavity 110 should also have a high transmittance, such as a transmittance of 80% or higher. Alternatively, the transmittance of the pixel cavity 110 can be set to be higher than 85%, 90%, or 95% to avoid the boundaries of the pixel cavity 110 affecting the light transmission of the internal base fluid and electrowetting fluid, as well as the imaging effect of the diffused particles.

[0050] For example, the pixel cavity 110 is typically made of an optically grade transparent material, such as transparent polymers like glass, polymethyl methacrylate (PMMA), polycarbonate (PC), or polyethylene terephthalate (PET). These materials possess excellent visible light transmission properties while having sufficient mechanical strength and chemical stability to withstand internal liquid environments and external operating conditions. The surface of the pixel cavity 110 should be smooth to avoid introducing additional scattering or absorption.

[0051] The second electrode 140 can be made of a transparent conductive material, such as indium tin oxide (ITO), aluminum-doped zinc oxide (AZO), graphene, or silver nanowires, and formed through microfabrication processes such as photolithography and sputtering. While ensuring conductivity, it should also have extremely high transmittance in the visible light range to minimize light loss. The transmittance of the second electrode 140 can be set to be greater than or equal to 80%, thereby preventing the second electrodes 140 distributed on both sides of the pixel cavity 110 from affecting the illumination of the diffusion particles and the imaging effect.

[0052] Based on this, the liquid storage tank 120 can be set as a transparent structure, such as having a light transmittance of more than 80%. At this time, the light emitting unit 200 needs to have high precision in illuminating the pixel cavity 110 to avoid illuminating other liquid storage tanks 120 and causing imaging errors.

[0053] Alternatively, the liquid reservoir 120 can be configured as a non-transparent structure, with a light transmittance of less than 5% or even less than 1%. In this case, the electrowetting liquid and diffusion particles in the non-display state are located within the liquid reservoir 120, preventing scattering imaging that could affect the imaging diffusion effect of other pixels. Simultaneously, the volume or cross-sectional area of ​​the pixel cavity 110 can be set to be more than ten times that of the liquid reservoir 120 to reduce the impact of the non-transparent liquid reservoir 120 on the overall imaging.

[0054] like Figure 3 As shown, the first electrode 130 is disposed within the liquid reservoir 120 and configured to control the electrowetting liquid-driven diffusion particles to switch between the pixel cavity 110 and the liquid reservoir 120. For example, when a voltage is applied to the first electrode 130, the electrowetting liquid-driven diffusion particles can be attracted into the liquid reservoir 120, keeping the pixel cavity 110 transparent. When the voltage on the first electrode 130 is removed and a voltage is applied to the second electrode 140, the electrowetting liquid-driven diffusion particles move and diffuse into the pixel cavity 110.

[0055] For example, the base liquid can be deionized water as the continuous phase, the electrowetting liquid can be dodecane as the dispersed phase, and the diffusion particles can be silane-modified titanium oxide particles. In this way, deionized water and dodecane are immiscible due to their polarity difference, while the oil-phase affinity diffusion particles are only dispersed within the oil-phase dodecane (electrowetting liquid). At this time, the contact angle between the base liquid and the electrowetting liquid can be changed by controlling the states of the corresponding first electrode 130 and second electrode 140, thereby altering the surface tension distribution and causing the electrowetting liquid to drive the internal diffusion particles towards a direction with lower surface tension (i.e., a larger contact angle).

[0056] By connecting the liquid storage tank 120 to the pixel cavity 110, such as... Figure 3 and 4As shown, when imaging is required, the first electrode 130 can be controlled to be de-energized, while the second electrode 140 at the pixel cavity 110 can be alternately energized. This causes the electrowetting liquid in the reservoir 120 to carry the diffusion particles toward the energized second electrode 140 for diffusion. The alternating energization of two or more second electrodes 140 stabilizes the electrowetting liquid and diffusion particles within the pixel cavity 110. This allows the light-emitting unit to illuminate the diffusion particles within the pixel cavity 110, resulting in a better stereoscopic imaging effect. Figure 1 and 2 As shown, in the liquid storage tank 120, if the first electrode 130 is continuously energized and the second electrode 140 is de-energized, the electrowetting liquid and the internal diffusion particles converge towards the first electrode 130, so as to constrain the electrowetting liquid and diffusion particles within the liquid storage tank 120, so as to avoid affecting the imaging effect of other pixel points.

[0057] Thus, when the diffused particles are introduced into the pixel cavity 110 and illuminated by the light-emitting unit 200, they can effectively scatter light, thereby forming independent, non-directional light-emitting points in three-dimensional space. This design overcomes the problems of limited viewing angle and easy visual fatigue in traditional grating 3D display technology, providing viewers with a more natural, comfortable and healthy 3D visual experience, more realistically simulating the display state of objects in real space, and meeting the needs of wide-angle and even all-around viewing angle experiences.

[0058] For example, by applying a 1-10 kHz intermediate frequency alternating current to the first electrode 130 and the second electrode 140, the interfacial tension (i.e., contact angle) between the electrowetting fluid and the base fluid can be changed. This change in interfacial tension drives the electrowetting fluid to move towards the electrode where the voltage is applied between the pixel cavity 110 and the reservoir 120. As the electrowetting fluid moves, the diffusing particles are carried into or out of the pixel cavity 110 due to their affinity for the electrowetting fluid. For example, when it is necessary to move the diffusing particles into the pixel cavity 110 to achieve light scattering, the corresponding second electrode 140 can be energized to allow the electrowetting fluid to enter the pixel cavity 110 from the reservoir 120. Conversely, when it is necessary to move the diffusing particles out of the pixel cavity 110, the corresponding first electrode 130 can be energized to allow the electrowetting fluid to carry the diffusing particles back into the reservoir 120.

[0059] Thus, by introducing an electrowetting liquid as an intermediate medium and utilizing the first electrode 130 and the second electrode 140 in conjunction to precisely control the movement of the electrowetting liquid, the position switching of the diffusion particles is indirectly and efficiently driven. This liquid-driven method based on the electrowetting effect has significant advantages over directly driving solid particles, such as fast response speed, high control precision, good repeatability, and less tendency to generate particle agglomeration. When the electrowetting liquid rapidly switches between the pixel cavity 110 and the liquid storage tank 120, the diffusion particles are attracted to the electrowetting liquid and repel the base liquid, allowing them to move quickly and accurately along with the electrowetting liquid. This ensures that the stereoscopic display device can achieve fast and clear image switching and display effects, significantly improving the dynamic performance and image quality of the display device.

[0060] It should be noted that, in the embodiments of the application, the base liquid and the electrowetting liquid can be compatible liquids of the above-mentioned aqueous phase and oil phase, such as the base liquid being an aqueous phase and the electrowetting liquid being an oil phase.

[0061] Alternatively, the base liquid and the electrowetting liquid can be designed as two different oil phases. For example, the base liquid can be a low-polarity (or non-polar) base oil phase, such as n-dodecane or n-hexadecane, which are straight-chain alkanes. The electrowetting liquid can be a modified functional oil phase, used to adapt to electric field manipulation and affinity diffusion particles. For example, the electrowetting liquid can be PDMS silicone oil or modified fluorosilicone oil, which are polysiloxanes. Since the solubility parameters of the two differ by 2-3, and there is no interaction between alkanes and polysiloxane molecules, they are naturally immiscible, resulting in a clear stratified interface. The diffusion particles can be PDMS-compatible silane-modified TiO2 microspheres with a surface coating of polysiloxane graft groups, which are homologous to the PDMS electrowetting liquid (with consistent intermolecular forces) and can be stably dispersed. Because of the significant difference in polarity / molecular structure between the aforementioned diffuse particles and alkane-based transparent base liquids, they completely repel each other, exhibiting no cross-phase migration or aggregation. At the same time, they retain the optical properties of high diffuse scattering and low light absorption, making them suitable for multi-color light modulation color rendering.

[0062] In some implementations, such as Figure 3 and Figure 5 As shown, the pixel cavity 110 and the liquid storage tank 120 extend along the first direction Z, and the openings of the pixel cavity 110 and the liquid storage tank 120 extend along the first direction Z. There are multiple first electrodes 130, which are sequentially arranged within the liquid storage tank 120 along the first direction Z.

[0063] By designing the pixel cavity 110 and the liquid storage tank 120 as structures extending along the first direction Z, and configuring multiple first electrodes 130 arranged sequentially along the first direction Z, segmented and refined control of the electrowetting liquid and diffusion particles in the first direction Z can be achieved through multiple first electrodes 130.

[0064] Taking the first direction Z as the vertical direction as an example, the pixel cavity 110 and the liquid storage tank 120 extending along the first direction Z can be configured to have multiple pixel positions. In this way, the multiple first electrodes 130 distributed sequentially along the first direction Z can be set for each pixel position. That is, when the pixel cavity 110 at a corresponding height position needs to be displayed and imaged, the first electrode 130 at the corresponding height position can be de-energized, and the second electrode 140 can be controlled to move the electrowetting liquid and diffusion particles from the liquid storage tank 120 at the corresponding height into the pixel cavity 110, thereby achieving a multi-pixel position stereoscopic imaging effect in the vertical direction.

[0065] For example, the liquid storage tank 120 may be provided with multiple mutually isolated sub-slot structures along the first direction Z. Each sub-slot is provided with at least one first electrode 130, which is used to adsorb the electrowetting liquid and diffusion particles in the pixel cavity 110 into the sub-slot of the liquid storage tank 120. In addition, by cooperating with the first electrode 130 and the second electrode 140, the movement of the electrowetting liquid and diffusion particles in the corresponding sub-slot can also be controlled and maintained within the pixel cavity 110 at the corresponding height, so as to improve the accuracy of imaging.

[0066] Alternatively, the pixel cavity 110 can be configured with multiple mutually isolated sub-cavities along the first direction Z. In this case, one sub-cavity is connected to a corresponding sub-slot, and at least one first electrode 130 is disposed in one sub-slot. The electrowetting liquid and diffusion particles can be located in the sub-slot by controlling the first electrode 130 to be in a conductive state. Alternatively, the first electrode 130 can be controlled to be in a de-circuit state, and the corresponding second electrode 140 can be controlled to be in a conductive state, so that the electrowetting liquid and diffusion particles at the corresponding height can move from the sub-slot to the sub-cavity, thereby presenting a better stereoscopic light emission and imaging effect under the illumination of the light-emitting unit 200.

[0067] Thus, by controlling the voltage difference between different electrodes such as the first electrode 130 and the second electrode 140, the interfacial tension of the electrowetting liquid can be accurately adjusted, thereby flexibly adjusting the movement position of the electrowetting liquid and the diffusion particles. Simultaneously, the arrangement of multiple sub-grooves and sub-cavities spaced along the first direction Z ensures that each sub-cavity corresponds to a pixel location. Furthermore, the isolation arrangement allows the electrowetting liquid and diffusion particles to be uniformly distributed along the first direction Z, thereby improving the imaging effect and quality of each pixel location in the pixel unit 100 along the first direction Z.

[0068] It should be noted that multiple second electrodes 140 can also be arranged sequentially along the first direction Z. That is, at the position corresponding to a pixel point in the first direction Z, multiple second electrodes 140 are distributed circumferentially in a plane perpendicular to the first direction Z along the pixel cavity 110, so as to flexibly control the movement state and position of the electrowetting liquid in the pixel cavity 110 at the corresponding height position by controlling the access voltage of the second electrodes 140 at different positions.

[0069] In some implementations, such as Figure 2 and Figure 6 As shown, the pixel cavity 110 has a rectangular or square cross-sectional shape perpendicular to the first direction Z. A liquid storage tank 120 is provided at at least one included angle of the pixel cavity 110 within the plane perpendicular to the first direction Z.

[0070] Designing the pixel cavity 110 as a rectangular structure in cross-section perpendicular to the first direction Z means that the pixel cavity 110 presents a rectangular outline on the plane of the display panel. This rectangular structure can be square, rectangular, etc., and its advantage lies in enabling a close arrangement of pixel units 100, improving the pixel density and space utilization of the display panel. In addition, the rectangular structure is compatible with common display panel manufacturing processes, such as photolithography and etching, which helps to simplify the manufacturing process and improve production efficiency. The rectangular structure also helps to form a uniform electric field distribution within the pixel cavity 110, thereby more precisely controlling the movement of electrowetting fluid and diffusion particles.

[0071] In a plane perpendicular to the first direction Z, the liquid reservoir 120 is positioned at at least one included angle of the pixel cavity 110. This means that the liquid reservoir 120 is located at a corner of the rectangular outline of the pixel cavity 110 on the planar projection of the display panel. This layout makes full use of the gaps at the edges of the pixel cavity 110, avoiding the liquid reservoir 120 occupying the main display area of ​​the pixel cavity 110, thereby maximizing the effective display area of ​​the pixel cavity 110. Positioning the liquid reservoir 120 at an included angle facilitates the formation of a communication port with the pixel cavity 110, ensuring that the diffusion particles and electrowetting liquid can smoothly switch and move between the pixel cavity 110 and the liquid reservoir 120. This design helps to achieve a compact pixel unit layout and provides flexibility for the subsequent array arrangement of the pixel units 100. For example, the liquid reservoir 120 can be positioned at a single included angle of the pixel cavity 110, or at multiple included angles, or at an included angle shared by adjacent pixel cavities 110.

[0072] Through the above technical solution, this application can effectively solve the problem of compact arrangement of pixel units 100 in a two-dimensional plane. The rectangular pixel cavity 110 facilitates the realization of a high-density pixel array, improving the pixel density and display effect of the display panel. At the same time, the liquid storage tank 120 is cleverly placed at the corner of the pixel cavity 110, making full use of the space between the pixel units 100 and avoiding the encroachment of the liquid storage tank 120 on the effective display area in the pixel cavity 110. Thus, while ensuring the fluid switching function, compact integration of the pixel units 100 is achieved. This layout not only optimizes space utilization but also simplifies the manufacturing process, facilitating mass production. This design is particularly advantageous when multiple pixel units 100 are arranged in a matrix structure, making the entire display panel structure more compact and efficient.

[0073] For example, in a plane perpendicular to the first direction Z, a plurality of pixel cavities 110 are arranged in a matrix structure. A liquid storage tank 120 is provided at the intersection of four adjacent pixel cavities 110, and one pixel cavity 110 is connected to at least one liquid storage tank 120.

[0074] In a plane perpendicular to the first direction Z, for a matrix arrangement of multiple pixel cavities 110, a liquid storage tank 120 is provided at each of the four included corners of each pixel cavity 110. Thus, the main body shape of the pixel cavity 110 in this plane can be rectangular or square, requiring only the formation of a receiving structure for the liquid storage tank 120 at each included corner, resulting in a compact arrangement of the internally matrix-arranged pixel units and high space utilization.

[0075] At this time, a pixel cavity 110 can be connected to a liquid storage tank 120. Since the number of pixel cavities 110 in multiple pixel units 100 can be equal to the number of liquid storage tanks 120, that is, each pixel cavity 110 is connected to a liquid storage tank 120, it is convenient to flexibly control the process of diffusion particles moving in and out of each pixel cavity 110, and it is also beneficial to simplify the complexity of the overall control program.

[0076] Alternatively, each pixel cavity 110 can be connected to two, three, or four liquid reservoirs 120 at the included angle. In this way, during the control of the diffusion particles moving into and out of the pixel cavity 110, the connecting channels between the two, three, or four liquid reservoirs 120 and the pixel cavity 110 can all serve as flow paths for the diffusion particles, which helps to improve the response speed and movement speed of the diffusion particles during the movement process, thereby improving the image refresh rate of the stereoscopic display device. Alternatively, one liquid reservoir 120 can be connected to two, three, or four pixel cavities 110 as needed; this is not limited.

[0077] Furthermore, the centralized arrangement of the liquid storage tank 120 simplifies the wiring and control of the first electrode 130, reduces manufacturing complexity, and facilitates the integration and miniaturization of the stereoscopic display device.

[0078] In other embodiments, the cross-sectional shape of the pixel cavity 110 perpendicular to the first direction Z can be set to an equilateral triangle or a regular hexagon, and multiple pixel cavities 110 can be seamlessly arranged and spliced ​​in a plane perpendicular to the first direction Z. It can be flexibly set as needed.

[0079] like Figure 2 and Figure 4 As shown, since the main body shape of the pixel cavity 110 in the plane perpendicular to the first direction Z is rectangular or square, at least one second electrode 140 can be provided at each edge of the pixel cavity 110.

[0080] By setting at least one second electrode 140 at each edge of the pixel cavity, the moving direction and speed of the diffusion particles located in the pixel cavity 110 can be adjusted by controlling the on-time of the second electrodes 140 at different positions of the pixel cavity 110, so that the diffusion particles can be stably maintained in the central region of the pixel cavity 110, thereby achieving a better display imaging effect.

[0081] Within the pixel cavity 110, the electrowetting fluid is continuously subjected to force and remains in a state of movement due to the continuous energization of the second electrode 140. To prevent the electrowetting fluid (diffusion particles) from continuously moving and concentrating in a corner or side of the pixel cavity 110, thus affecting the visual imaging effect, the activation time of the second electrodes 140 on the four side walls can be alternately controlled to make the electrowetting fluid reciprocate in the central region of the pixel cavity 110. For example, when the electrowetting fluid moves to the left and deviates from the central region, the activation of the right-side second electrode 140 and the deactivation of the left-side second electrode 140 are controlled to make the electrowetting fluid move to the right back to the central region. When the electrowetting fluid is about to move to the right and leave the central region, the deactivation of the right-side second electrode 140 and the activation of the left-side second electrode 140 are controlled to make the electrowetting fluid move to the left. This alternating process keeps the electrowetting fluid relatively stable in the central region of the pixel cavity 110, allowing the internal diffusion particles to present a better display imaging effect under the illumination of the light-emitting unit 200.

[0082] For example, such as Figure 5 and Figure 6 As shown, the second electrode 140 extends along the first direction Z.

[0083] Because the second electrode extends along the first direction Z, it can apply a more uniform and continuous electric field force to the electrowetting liquid within the pixel cavity 110 extending along the first direction Z. This makes the switching movement of the electrowetting liquid between the pixel cavity 110 and the reservoir 120 smoother and more consistent, avoiding local stagnation or incomplete movement caused by uneven electric field. Therefore, the distribution of diffusion particles within the pixel cavity 110 will be more uniform, and the efficiency and uniformity of scattered light will be significantly improved. This effectively solves the problems of uneven display and decreased contrast caused by uneven electric field driving, ensuring that the stereoscopic display device can present high-quality, high-uniformity images.

[0084] It should be noted that, in this embodiment, the pixel unit 100 can be a pixel point structure, that is, multiple pixel units 100 are arranged in a matrix structure in a plane perpendicular to the first direction Z, and the multiple pixel units 100 are distributed sequentially along the first direction Z. In this case, the pixel unit 100 at each pixel point can be precisely controlled to control the movement and switching of the electrowetting liquid and the diffusion particles between the pixel cavity 110 and the liquid storage tank 120.

[0085] At this time, multiple pixel units 100 are stacked sequentially along the first direction Z, and the second electrode 140 can extend along the first direction Z to be located within the multiple pixel units 100. It should be noted that the second electrode 140 extending along the first direction Z can be a single strip electrode structure. Alternatively, it can be a split strip electrode structure formed by multiple sub-electrodes that are sequentially contacted and electrically connected. For example, the contact-type electrical connection extension structure between two adjacent sub-electrodes can be achieved by magnetic positioning or pin positioning, and there is no limitation on this.

[0086] Alternatively, pixel unit 100 can also be a pixel strip structure. If pixel unit 100 extends along the first direction Z and multiple pixel units 100 are arranged in a matrix structure in a plane perpendicular to the first direction Z, the number of pixel units 100 can be significantly reduced.

[0087] For example, within each pixel unit 100, a pixel cavity 110 extends along a first direction Z, and a liquid storage tank 120 has multiple partitioned sub-slot structures along the first direction Z. There are multiple first electrodes 130, and at least one first electrode 130 is correspondingly disposed in a sub-slot of one liquid storage tank 120 along the first direction Z. In this case, the second electrode 140 can also be configured as a strip structure corresponding to the pixel cavity 110.

[0088] In this way, within the multiple sub-slots of the liquid storage tank 120, the first electrode 130 can be controlled to be in a voltage-applied conducting state so that the electrowetting liquid and diffusion particles are located within the sub-slot. Alternatively, the corresponding first electrode 130 can be controlled to be in an open-circuit state (i.e., no voltage applied), and the second electrode 140 can be controlled to be in a voltage-applied conducting state, so that the electrowetting liquid and diffusion particles in the corresponding sub-slot move to the pixel cavity 110 at the corresponding height, so as to cooperate with the illumination of the light-emitting unit 200 to make the corresponding pixel position imaged.

[0089] During the process of controlling the electrowetting liquid and diffusion particles to move into the pixel cavity 110 at the corresponding height via the second electrode 140, the first electrode 130 at the sub-slot at the corresponding height position is not in a conductive state, meaning the electrowetting liquid and diffusion particles are in a free state. The second electrode 140, being in a conductive state, can control the free electrowetting liquid and diffusion particles to move from the reservoir 120 into the pixel cavity 110 at the corresponding height position, thereby achieving the imaging effect of the pixel at that height position. Furthermore, the second electrode 140 does not require segmented control in the first direction Z, simplifying the structural design of the second electrode 140 and the overall control strategy.

[0090] Alternatively, within each pixel unit 100, a pixel cavity 110 may be provided with multiple partitioned sub-cavities along the first direction Z, and a liquid storage tank 120 may extend along the first direction Z. Multiple first electrodes 130 may be provided, arranged sequentially along the first direction Z. For example, multiple first electrodes 130 may correspond one-to-one with multiple sub-cavities, and the first electrodes 130 may be located within the liquid storage tank 120.

[0091] Similarly, by controlling the on and off states of multiple first electrodes 130, the free state of the electrowetting liquid and diffusion particles at a corresponding height within the reservoir 120 can be controlled. Furthermore, the free electrowetting liquid and diffusion particles can move from the reservoir 120 at the corresponding height to the sub-cavity at the corresponding height under the action of the second electrode 140 in the on state, thereby achieving the imaging effect of the pixel at that height.

[0092] Among them, the transmittance of the pixel cavity 110, base liquid, electrowetting liquid, and second electrode 140 is greater than or equal to 90%.

[0093] The aforementioned transmittance of 90% or higher signifies that all components along the critical optical paths, including the pixel cavity 110, the base fluid, the electrowetting fluid, and the second electrode 140, achieve extremely high transmittance in the visible light band. This necessitates strict control over material selection, fabrication processes, and structural design to ensure that the intensity attenuation of light as it passes through these media is kept within a minimal range.

[0094] By designing the transmittance of the pixel cavity 110, base liquid, electrowetting liquid, and second electrode 140 to be greater than or equal to 90%, the optical efficiency of the stereoscopic display device can be significantly improved. Specifically, when the light-emitting unit 200 illuminates light, the energy loss of the light is minimized as it passes through multiple optical interfaces and media such as the pixel cavity 110, base liquid, electrowetting liquid, and second electrode 140. This means that more light can effectively reach the diffusion particles and be scattered, resulting in higher light intensity emitted from the pixel cavity 110. This high transmittance design effectively solves the problems of insufficient display brightness and image blurring caused by optical path loss, ensuring the clarity, brightness, and color saturation of the stereoscopic image, providing users with a more realistic, immersive, and high-quality stereoscopic visual experience. At the same time, high transmittance also means lower energy consumption, because there is no need to increase the brightness of the light source to compensate for optical path loss, thereby extending the lifespan of the device and reducing operating costs.

[0095] It should be noted that the scattering rate of the diffusion particles is 15-65%, and the scattering rate of the diffusion particles can be set to 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, or 60%. By setting the diffusion particles with a scattering rate between 15-65%, it is beneficial to improve the uniformity, contrast, and brightness of the image display.

[0096] The transmittance of the diffusion particles is 30-80%, and can be set to 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, or 80%. Setting the transmittance of the diffusion particles between 30-80% helps to improve the brightness and color clarity of the image display.

[0097] In some embodiments, such as Figure 1 As shown, the light-emitting unit 200 includes a first light source panel 210, a second light source panel 220, and a third light source panel 230. The first light source panel 210 is disposed on one side of a plurality of pixel units 100 along a first direction Z. In a plane perpendicular to the first direction Z, the first light source panel 210 has a plurality of first pixel light sources 211 arranged in a matrix, and the plurality of pixel units 100 are arranged in a matrix structure, with each first pixel light source 211 corresponding to a pixel unit 100. The second light source panel 220 is disposed on one side of the plurality of pixel units 100 along a second direction Y. In a plane perpendicular to the second direction Y, the second light source panel 220 has a plurality of second pixel light sources 221 arranged in a matrix. The third light source panel 230 is disposed on one side of the plurality of pixel units 100 along a third direction X. In a plane perpendicular to the third direction X, the third light source panel 230 has a plurality of third pixel light sources 231 arranged in a matrix.

[0098] The first pixel light source 211, the second pixel light source 221, and the third pixel light source 231 are red, green, and blue light sources, respectively, and there are included angles between the first direction Z, the second direction Y, and the third direction X.

[0099] Taking pixel unit 100 as an example, which is a strip structure extending along the first direction Z. The multiple second pixel light sources 221 and multiple third pixel light sources 231 of the second light source panel 220 and the third light source panel 230 are correspondingly set pixel point light sources.

[0100] When the electrowetting fluid moves the diffusion particles to the pixel cavity 110, the corresponding first pixel light source 211, second pixel light source 221, and third pixel light source 231 can be controlled to illuminate the diffusion particles within the pixel cavity 110 based on the three-dimensional coordinates of the pixel cavity 110 and the color to be displayed. By controlling the proportions of red, green, and blue light sources, different color imaging effects of the diffusion particles can be achieved. Combined with the diffusion effect of the diffusion particles, multi-angle full-color images can be realized, significantly enhancing the color performance and stereoscopic effect of the 3D display device. This multi-directional, multi-color light source configuration makes the displayed content more realistic, simulating the visual effects of objects in the real world under different lighting conditions. It overcomes the limitations of a single light source or a single-direction light source in achieving high-quality 3D display, providing users with an immersive 3D viewing experience.

[0101] Secondly, this application provides an imaging control method for a stereoscopic display device, applied to the stereoscopic display device described in the first aspect, such as... Figure 7 and Figure 8 As shown, the imaging control method includes the following steps:

[0102] Step S100: The stereo image is divided into multiple sub-frame images. In each sub-frame image, a pixel light source of the light-emitting unit illuminates the diffusion particles in a pixel cavity along a straight line.

[0103] Step S200: Within the first time period, control the diffusion particles to move into the corresponding pixel cavity according to a subframe image, and control the light-emitting unit to illuminate the diffusion particles in the corresponding pixel cavity.

[0104] Step S300: Within multiple first durations, control the pixel unit and the light-emitting unit to sequentially present the corresponding sub-frame image, and the sum of multiple first durations within a stereo image is less than 62.5 milliseconds.

[0105] Stereoscopic images contain rich depth or multi-view information. In order to effectively present this stereoscopic information, it is necessary to decompose it into a series of three-dimensional image sequences, namely sub-frame images, and to display multiple sub-frame images sequentially through time concatenation to form a complete stereoscopic image, thereby achieving a time-division multiplexing stereoscopic display effect.

[0106] Because if two or more pixel cavities 110 are located in the same sub-frame image along the straight line corresponding to the same pixel light source, the diffusion particles in the pixel cavity 110 far from the pixel light source cannot be fully illuminated by the light source, resulting in problems such as failure to display images or unclear images. By splitting the complex stereo image into multiple sub-frame images, the pixel positions in each sub-frame image can be set one-to-one with the pixel light source, that is, one pixel position corresponds to a set of three-dimensional coordinate pixel light sources. This allows the pixel positions in each sub-frame image to be adapted and imaged one-to-one under the adaptation of diffusion particles and light-emitting units 200. This allows for precise control of the movement of diffusion particles and the illumination of light-emitting units 200 within each first time period, ensuring the accurate presentation of each sub-frame image, thereby guaranteeing the image clarity and color reproduction. Then, through time-division multiplexing and integration, these subframe images are presented rapidly and sequentially within multiple first durations, and the sum of the multiple first durations is less than 62.5 milliseconds. This allows the human eye to perceive continuous, smooth, and flicker-free stereoscopic images under the persistence of vision effect, effectively solving problems such as crosstalk, blurring, and discontinuity that may occur during the display of dynamic stereoscopic images, thereby significantly improving the imaging quality of stereoscopic display devices and the user viewing experience.

[0107] In some embodiments, the subframe image includes at least one pixel coordinate and the ratio of the three-color light source corresponding to that pixel coordinate. Based on this, as... Figure 8 As shown, step S200 includes:

[0108] Step S210: Control the first electrode to be de-energized according to the pixel coordinates, and control the second electrode to be energized, so that the diffusion particles move into the corresponding pixel cavity.

[0109] Step S220: Based on the pixel coordinates and the corresponding ratio of the three-color light sources, control the first pixel light source, the second pixel light source, and the third pixel light source to illuminate the pixel cavity at the pixel coordinates;

[0110] Step S230: After a preset time, control the first pixel light source, the second pixel light source and the third pixel light source to turn off, and control the second electrode at the pixel coordinate to be de-energized and the first electrode to be energized.

[0111] The maximum value of the preset time is the first duration. Preferably, the preset time is the first duration minus the reaction time for the diffusion particles to move into and out of the pixel cavity 110.

[0112] In the above embodiment, 62.5 milliseconds is the minimum duration of each stereoscopic image (i.e., 1 / 16 frame). Based on this, the minimum duration of each stereoscopic image can also be set to 1 / 18 frame, 1 / 20 frame, 1 / 24 frame, or 1 / 30 frame, etc., according to actual needs, and there is no limitation thereto.

[0113] It should be noted that each subframe image includes multiple pixels to be displayed, along with their three-dimensional coordinates (i.e., pixel coordinates) and corresponding display color information (i.e., the ratio of the three-color light source). The three-dimensional coordinate information is used for precise pixel positioning, controlling the first electrode 130 and the second electrode 140 at the corresponding pixel cavity 110 to move the electrowetting liquid and diffusion particles from the reservoir 120 into the pixel cavity 110. Furthermore, the three-dimensional coordinate information is also used to control the pixel light source at the corresponding position in the light-emitting unit 200 to illuminate the diffusion particles within the corresponding pixel cavity 110.

[0114] If the displayed image is a black-and-white stereoscopic image, one of the three-dimensional pixel light sources can be used to directly illuminate the diffusion particles within the pixel cavity 110, allowing the diffusion particles to uniformly scatter light and present uniform light source pixels. At this time, the other two pixel light sources corresponding to the three-dimensional coordinate information can be used to illuminate pixel cavities at other locations, significantly increasing the imaging density of pixel points within the subframe image. This helps reduce the number of subframe images and increase imaging display time, thereby reducing flicker frequency and improving image quality.

[0115] Alternatively, if the displayed image is a color stereoscopic image, the displayed color information is the RGB three-color light source ratio information of the corresponding pixel position. With the first pixel light source 211, the second pixel light source 221, and the third pixel light source 231 being red, green, and blue light sources respectively, the brightness of the first pixel light source 211, the second pixel light source 221, and the third pixel light source 231 can be controlled to present different brightness levels when illuminating the pixel cavity 110, and the corresponding color pixel positions can be presented at the diffusion particles of the pixel cavity 110 through mixing and diffusion, thereby meeting the different color requirements of stereoscopic imaging.

[0116] After a preset illumination and imaging time, the first pixel light source 211, the second pixel light source 221, and the third pixel light source 231 are turned off. The second electrode 140 at the pixel cavity 110 is de-energized while the first electrode 130 is energized, causing the electrowetting liquid to carry the diffusion particles from the pixel cavity 110 to the storage tank 120, thus completing the display and imaging of one subframe image. Multiple pointer images are displayed sequentially to achieve a complete stereoscopic image presentation through time-division multiplexing combined with visual persistence.

[0117] Thirdly, such as Figure 9 As shown, this application embodiment provides a control device for a stereoscopic display device, namely a control module 300. The control module includes a processor 310, a communication interface 320, a memory 330, and a communication bus 340. The processor 310, communication interface 320, and memory 330 communicate with each other via the communication bus 340. The memory 330 is used to store computer programs.

[0118] In one embodiment of this application, when the processor 310 executes the computer program stored in the memory 330, it implements the execution steps of the imaging control method for the stereoscopic display device in the second aspect.

[0119] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the execution steps of the imaging control method for the stereoscopic display device in the second aspect.

[0120] For example, due to the presence of an electric field under normal conditions (i.e., the first electrode 130 is energized), the electrowetting liquid and the diffusion particles are distributed in the liquid storage tanks 120 at the four corners of the pixel unit 100, and move along the first direction Z according to the electric field.

[0121] When a display signal is input, the control module 300 divides each frame of the stereoscopic image into multiple sub-frames, and within each sub-frame, it further divides it into multiple pixel coordinates and control signals in the X, Y, and Z directions. The pixel coordinates and control signals are then sequentially sent to the first light source panel 210, the second light source panel 220, and the third light source panel 230. Within each sub-frame, the pixel coordinates control the corresponding first electrode 130 and second electrode 140 to cause the electrowetting liquid to carry the diffusing particles to gather within the pixel cavity 110 at the pixel coordinate. Furthermore, the first light source panel 210, the second light source panel 220, and the third light source panel 230 sequentially control the corresponding first pixel light source 211, second pixel light source 221, and third pixel light source 231 to illuminate the pixel cavity 110 at the pixel coordinates by combining (x, y), (x, z), and (y, z) coordinates. Since the pixel cavity 110 contains diffused particles, by controlling the brightness ratio of the first pixel light source 211, the second pixel light source 221, and the third pixel light source 231, and through reflection and diffusion by the diffused particles, the corresponding color of the pixel cavity in the three-dimensional space is displayed.

[0122] At the same time, multiple corresponding pixels are illuminated within a subframe image. Due to the persistence of vision in the human eye, combined with time-division multiplexing technology, multiple subframe images are sequentially and rapidly imaged to form a complete stereoscopic image.

[0123] If the stereoscopic image is static 3D image information, the above subframe images can be displayed repeatedly to form a stable static stereoscopic image. If the stereoscopic image is part of a dynamic 3D stereoscopic video, multiple time-division multiplexed subframe images can be used to continue playing the next frame of the stereoscopic image to form a continuous 3D stereoscopic video display effect.

[0124] Taking multiple pixels distributed sequentially in the third direction X as an example, when multiple pixels are displayed simultaneously (i.e., within the same stereoscopic image), a high-speed dynamic refresh display method is used to display the image of multiple pixels in the same direction.

[0125] If, within the same stereoscopic image retention time T, it is necessary to simultaneously display images at positions such as (X1, Y, Z), (X2, Y, Z), (X3, Y, Z), and (X4, Y, Z), then at time T1, the electrowetting liquid (diffusion particles) at coordinates (X1, Y, Z) first aggregates within the pixel cavity 110. Light emitted from the first light source panel 210, the second light source panel 220, and the third light source panel 230 is scattered by the diffusion particles and enters the human eye to form an image. At this time, other color point positions do not emit light.

[0126] At time T2, the electrowetting liquid at coordinates (X1, Y, Z) flows back into the storage tank under the action of the electric field, while the electrowetting liquid (diffusion particles) at coordinates (X2, Y, Z) aggregates within the pixel cavity 110 under the control of the electric field. At this time, the colored light from the first light source panel 210, the second light source panel 220, and the third light source panel 230 passes directly through the pixel at (X1, Y, Z) and is scattered by the diffusion particles at (X2, Y, Z), thereby emitting light.

[0127] Based on the same mechanism, at time T3, the electrowetting liquid at coordinates (X1, Y, Z) and (X2, Y, Z) flows back into the storage tank under the action of the electric field, and the electrowetting liquid at coordinates (X3, Y, Z) aggregates in the pixel cavity 110, thereby realizing the light emission at (X3, Y, Z).

[0128] At time T4, the electrowetting liquid at coordinates (X1, Y, Z), (X2, Y, Z), and (X3, Y, Z) flows back into the storage tank under the action of the electric field, while the electrowetting liquid at coordinate (X4, Y, Z) aggregates in the pixel cavity 110, thereby realizing the light emission at (X4, Y, Z).

[0129] In the above embodiments, T1, T2, T3, and T4 represent the first duration of the subframe image. Due to the persistence of vision, when the image change time is very short, the image change appears as a continuous image to the human eye. When the total duration T satisfies T≤1 / 16 seconds and the total duration of T1~T4 or T1~Tn is less than T, the image formed by the light at each pixel point is perceived as a complete frame image, thus realizing the simultaneous display of multiple pixel points on the same frame image. When different frames of images change continuously, a dynamic three-dimensional image can be obtained.

[0130] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0131] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0132] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A stereoscopic display device, characterized in that, include: Multiple pixel units (100) are provided, each pixel unit (100) including a pixel cavity (110), a liquid reservoir (120), a first electrode (130), and a second electrode (140). A base liquid is provided in the pixel cavity (110) and the liquid reservoir (120), and the liquid reservoir (120) is connected to the pixel cavity (110). An electrowetting liquid and diffusion particles are provided in the base liquid. The electrowetting liquid and the base liquid are immiscible, and the diffusion particles are attracted to the electrowetting liquid and repel the base liquid. The first electrode (130) is provided in the liquid reservoir (120), and the second electrode (140) is provided on at least one side of the pixel cavity (110). The first electrode (130) and the second electrode (140) are configured to control the electrowetting liquid to drive the diffusion particles to switch between the pixel cavity (110) and the liquid reservoir (120). And a light-emitting unit (200) configured to illuminate light toward the corresponding pixel cavity (110) so that the diffusion particles in the pixel cavity scatter the light; In a plane perpendicular to the first direction (Z), a plurality of pixel units (100) are arranged in a matrix structure; the stereoscopic imaging display device is provided with a plurality of pixel points along the first direction (Z).

2. The stereoscopic display apparatus of claim 1, wherein, The pixel cavity (110) and the liquid storage tank (120) extend along the first direction (Z), and the openings of the pixel cavity (110) and the liquid storage tank (120) extend along the first direction (Z). There are multiple first electrodes (130), and multiple first electrodes (130) are sequentially arranged in the liquid storage tank (120) along the first direction (Z).

3. The stereoscopic display apparatus of claim 2, wherein, The pixel cavity (110) has a rectangular cross-sectional shape perpendicular to the first direction (Z); A liquid reservoir (120) is provided at at least one included angle of the pixel cavity (110) in a plane perpendicular to the first direction (Z).

4. The stereoscopic display apparatus of claim 3, wherein, In a plane perpendicular to the first direction (Z), the plurality of pixel cavities (110) are arranged in a matrix structure; The liquid storage tank (120) is provided at the intersection of the four adjacent pixel cavities (110), and one pixel cavity (110) is connected to at least one liquid storage tank (120).

5. The stereoscopic display apparatus of claim 3, wherein, In a plane perpendicular to the first direction (Z), at least one second electrode (140) is disposed at each edge of the pixel cavity (110); and / or, The second electrode (140) extends along the first direction (Z).

6. The autostereoscopic display apparatus of claim 1, wherein, The pixel cavity (110) extends along a first direction (Z), and the liquid storage tank (120) has multiple partitioned sub-slots along the first direction; the number of first electrodes (130) is multiple, and at least one first electrode (130) is correspondingly disposed in a sub-slot of one liquid storage tank (120) along the first direction (Z); or, The pixel cavity (110) is provided with a plurality of partitioned sub-cavities along the first direction (Z), and the liquid storage tank (120) extends along the first direction (Z); there are a plurality of first electrodes (130), and the plurality of first electrodes (130) are arranged sequentially along the first direction (Z).

7. A stereoscopic display apparatus according to any one of claims 1-6, wherein, The transmittance of the pixel cavity (110), the base liquid, the electrowetting liquid, and the second electrode (140) is greater than or equal to 80%; and / or, The light transmittance of the diffusion particles is 30-80%, and the scattering rate of the diffusion particles is 15-65%.

8. A stereoscopic display apparatus according to any one of claims 1-6, wherein, The light-emitting unit (200) includes: A first light source panel (210) is disposed on one side of a plurality of pixel units (100) along a first direction (Z); in a plane perpendicular to the first direction (Z), the first light source panel (210) is provided with a plurality of first pixel light sources (211) arranged in a matrix, the plurality of pixel units (100) are arranged in a matrix structure, and the first pixel light sources (211) are disposed in a one-to-one correspondence with the pixel units (100); A second light source panel (220) is disposed on one side of a plurality of pixel units (100) along a second direction (Y); in a plane perpendicular to the second direction (Y), the second light source panel (220) is provided with a plurality of second pixel light sources (221) arranged in a matrix. A third light source panel (230) is disposed on one side of a plurality of pixel units (100) along a third direction (X); in a plane perpendicular to the third direction (X), the third light source panel (230) is provided with a plurality of third pixel light sources (231) arranged in a matrix. The first pixel light source (211), the second pixel light source (221) and the third pixel light source (231) are red, green and blue light sources, respectively, and the first direction (Z), the second direction (Y) and the third direction (X) are set perpendicular to each other.

9. An imaging control method of a stereoscopic display apparatus, applied to the stereoscopic display apparatus according to any one of claims 1 to 8, characterized by, The imaging control method includes: The stereoscopic image is divided into multiple sub-frame images. In each sub-frame image, a pixel light source of the light-emitting unit illuminates the diffusion particles in a pixel cavity along a straight line. During a first time period, the first electrode and the second electrode control the diffusion particles to move into the corresponding pixel cavity according to a subframe image, and control the light-emitting unit to illuminate the diffusion particles in the corresponding pixel cavity; Within multiple first durations, the pixel unit and the light-emitting unit are controlled to sequentially present the corresponding sub-frame image, and the sum of multiple first durations within a stereoscopic image is less than 62.5 milliseconds.

10. The method of claim 9, wherein the method further comprises: The subframe image includes at least one pixel coordinate and the ratio of the three-color light source corresponding to the pixel coordinate; The step of controlling the diffusion particles to move into the corresponding pixel cavity according to a subframe image within the first time period, and controlling the light-emitting unit to illuminate the diffusion particles in the corresponding pixel cavity, includes: The first electrode corresponding to the pixel coordinates is de-energized, and the second electrode corresponding to the pixel is energized, so that the diffusion particles move into the corresponding pixel cavity. Based on the pixel coordinates and the corresponding ratio of the three-color light sources, the corresponding first pixel light source, second pixel light source, and third pixel light source are controlled to illuminate the pixel cavity at the pixel coordinates. After a preset time, the first pixel light source, the second pixel light source, and the third pixel light source are turned off, and the second electrode at the pixel coordinate is de-energized while the first electrode is energized.

Images