Search

CN-121995619-A - Stereoscopic display device and imaging control method thereof

CN121995619ACN 121995619 ACN121995619 ACN 121995619ACN-121995619-A

Abstract

The application relates to a stereoscopic display device and an imaging control method thereof, 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 includes 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. The pixel cavity and the liquid storage tank are internally provided with base liquid, the liquid storage tank is communicated with the pixel cavity, the base liquid is internally provided with electrowetting liquid and diffusion particles, the electrowetting liquid and the base liquid are mutually insoluble, and the diffusion particles are used for affinity electrowetting liquid and rejection of the base liquid. The liquid storage tank is internally provided with a first electrode, at least one side of the pixel cavity is provided with a second electrode, and the first electrode and the second electrode are configured to control electrowetting liquid to drive diffusion particles to switch and move between the pixel cavity and the liquid storage tank. The light emitting units are configured to irradiate light toward the corresponding pixel cavities so that the diffusion particles in the pixel cavities scatter the light.

Inventors

  • LIU QINGSONG
  • CHEN YIFEI
  • LI JIEWEI

Assignees

  • 惠科股份有限公司

Dates

Publication Date
20260508
Application Date
20260410

Claims (10)

  1. 1. A stereoscopic display device, comprising: The pixel comprises a plurality of pixel units (100), wherein each pixel unit (100) comprises a pixel cavity (110), a liquid storage groove (120), a first electrode (130) and a second electrode (140), base liquid is arranged in each pixel cavity (110) and each liquid storage groove (120), each liquid storage groove (120) is communicated with each pixel cavity (110), electrowetting liquid and diffusion particles are arranged in each base liquid, the electrowetting liquid and the base liquid are mutually insoluble, the diffusion particles are compatible with the electrowetting liquid and repel the base liquid, the first electrode (130) is arranged in each liquid storage groove (120), the second electrode (140) is arranged on at least one side of each pixel cavity (110), and the first electrode (130) and the second electrode (140) are configured to control the electrowetting liquid to drive the diffusion particles to switch and move between the pixel cavities (110) and the liquid storage grooves (120); And a light emitting unit (200), the light emitting unit (200) being configured to irradiate light towards the corresponding pixel cavity (110) to scatter light by the diffusing particles within the pixel cavity.
  2. 2. The stereoscopic display device according to claim 1, wherein the pixel cavity (110) and the reservoir (120) are arranged to extend along a first direction (Z), and the openings of the pixel cavity (110) and the reservoir (120) are arranged to extend along the first direction (Z); the number of the first electrodes (130) is a plurality, and the plurality of the first electrodes (130) are sequentially arranged in the liquid storage groove (120) along the first direction (Z).
  3. 3. A stereoscopic display device according to claim 2, wherein the pixel cavity (110) has a rectangular structure in cross-sectional shape perpendicular to the first direction (Z); In a plane perpendicular to the first direction (Z), a reservoir (120) is provided at least one included angle of the pixel cavity (110).
  4. 4. A stereoscopic display apparatus according to claim 3, wherein a plurality of the pixel cavities (110) are arranged in a matrix structure in a plane perpendicular to the first direction (Z); the liquid storage tanks (120) are arranged at the junction of the adjacent four pixel cavities (110), and one pixel cavity (110) is communicated with at least one liquid storage tank (120).
  5. 5. A stereoscopic display apparatus according to claim 3, wherein at least one of the second electrodes (140) is provided at each edge of the pixel cavity (110) in a plane perpendicular to the first direction (Z), and/or, The second electrode (140) is arranged extending along the first direction (Z).
  6. 6. The stereoscopic display device according to claim 1, wherein the pixel cavity (110) is disposed to extend in a first direction (Z), the liquid storage tank (120) is disposed with a plurality of sub-tanks disposed at intervals along the first direction, the number of the first electrodes (130) is plural, at least one first electrode (130) is disposed corresponding to a sub-tank of one liquid storage tank (120) along the first direction (Z), or The pixel cavity (110) is provided with a plurality of sub-cavities which are arranged in a separated mode along a first direction (Z), the liquid storage groove (120) is arranged in an extending mode along the first direction (Z), the number of the first electrodes (130) is multiple, and the plurality of the first electrodes (130) are sequentially arranged along the first direction (Z).
  7. 7. The stereoscopic display apparatus according to any one of claims 1 to 6, wherein the transmittance of the pixel cavity (110), the base liquid, the electrowetting fluid, 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. 8. The stereoscopic display apparatus according to any one of claims 1 to 6, wherein the light emitting unit (200) comprises: The display device comprises a plurality of pixel units (100), a first light source panel (210), a second light source panel (210), a first light source module and a second light source module, wherein the first light source panel (210) is arranged on one side of the pixel units (100) along a first direction (Z), the first light source panel (210) is provided with a plurality of first pixel light sources (211) which are arranged in a matrix manner in a plane perpendicular to the first direction (Z), the pixel units (100) are arranged in a matrix structure, and the first pixel light sources (211) are arranged in one-to-one correspondence with the pixel units (100); a second light source panel (220), wherein the second light source panel (220) is arranged at one side of a plurality of pixel units (100) along a second direction (Y), and a plurality of second pixel light sources (221) arranged in a matrix are arranged on the second light source panel (220) in a plane perpendicular to the second direction (Y); A third light source panel (230), wherein the third light source panel (230) is arranged at one side of the plurality of pixel units (100) along a third direction (X), and the third light source panel (230) is provided with a plurality of third pixel light sources (231) which are arranged in a matrix in a plane perpendicular to the third direction (X); 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, and the first direction (Z), the second direction (Y) and the third direction (X) are mutually perpendicular.
  9. 9. An imaging control method of a stereoscopic display device, applied to the stereoscopic display device according to any one of claims 1 to 8, characterized by comprising: Splitting a stereoscopic image into a plurality of sub-frame images, wherein in each sub-frame image, one pixel light source of the light emitting unit irradiates the diffusion particles in one pixel cavity along a straight line direction; in a first duration, the first electrode and the second electrode control the diffusion particles to move into the corresponding pixel cavities according to one subframe image, and control the light-emitting units to irradiate the diffusion particles in the corresponding pixel cavities; and controlling the pixel unit and the light emitting unit to sequentially display the corresponding sub-frame images in a plurality of first time periods, wherein the sum of the first time periods in one stereoscopic image is less than 62.5 milliseconds.
  10. 10. The method according to claim 9, wherein the sub-frame image includes at least one pixel coordinate and a three-color light source ratio corresponding to the pixel coordinate; the step of controlling the diffusion particles to move into the corresponding pixel cavities according to one subframe image and controlling the light emitting units to irradiate the diffusion particles in the corresponding pixel cavities in the first time period comprises the following steps: Controlling the corresponding first electrode to be powered off according to the pixel coordinates, and controlling the corresponding second electrode to be powered on so as to enable the diffusion particles to move into the corresponding pixel cavity; Controlling the corresponding first pixel light source, second pixel light source and third pixel light source to irradiate the pixel cavity at the pixel coordinates according to the pixel coordinates and the corresponding three-color light source proportion; After the preset time, the first pixel light source, the second pixel light source and the third pixel light source are controlled to be turned off, and the second electrode at the pixel coordinates is controlled to be powered off and the first electrode is controlled to be powered on.

Description

Stereoscopic display device and imaging control method thereof Technical Field The application relates to the technical field of space imaging display, in particular to a three-dimensional display device and an imaging control method thereof. Background With the continuous development of information display technology, the requirement of users for visual experience has gradually changed from two-dimensional planar display to three-dimensional spatial display, so as to obtain more real and immersive interaction effects. However, currently mainstream three-dimensional display technologies, such as stereoscopic display systems based on the raster principle, synthesize three-dimensional images in the human brain mainly by making binocular parallax. This technique relies on the straight line propagation characteristics of light rays, resulting in a three-dimensional image that is extremely limited in viewing angle, and a user can observe a stereoscopic effect only in a specific viewing angle range, and once the viewing angle is shifted, the stereoscopic effect rapidly disappears. Meanwhile, because of the difference of images received by two eyes, the brain needs to continuously fuse the images to form three-dimensional perception, discomfort symptoms such as visual fatigue, dry eyes, headache and the like are easily caused when the brain looks for a long time, and even the health of a user is influenced when the discomfort symptoms are serious. In addition, the prior art cannot realize that each point in a display image uniformly emits light in all directions of a space, so that the light has obvious directivity, and the natural light-emitting characteristic of a real object in the space cannot be truly simulated, so that the recognition process of human eyes on the real world is difficult to restore. Therefore, development of a novel three-dimensional display device is needed to make each display point emit nondirectional light, effectively enlarge the visual angle and reduce the visual fatigue problem. Disclosure of Invention The application provides a stereoscopic display device and an imaging control method thereof, and aims to provide a stereoscopic display device capable of enlarging a visual angle and reducing visual fatigue. In a first aspect, an embodiment of the present application provides a stereoscopic display device including 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. The pixel cavity and the liquid storage tank are internally provided with base liquid, the liquid storage tank is communicated with the pixel cavity, the base liquid is internally provided with electrowetting liquid diffusion particles, the electrowetting liquid and the base liquid are mutually insoluble, and the diffusion particles are used for affinitive the electrowetting liquid and repellent the base liquid. The liquid storage tank is internally provided with a first electrode, at least one side of the pixel cavity is provided with a second electrode, and the first electrode and the second electrode are configured to control electrowetting liquid to drive diffusion particles to switch and move between the pixel cavity and the liquid storage tank. The light emitting units are configured to irradiate light toward the corresponding pixel cavities so that diffusion particles in the pixel cavities scatter the light. In some embodiments, the pixel cavity and the reservoir extend along a first direction, and the pixel cavity and the reservoir have a port extending along the first direction. The first electrodes are arranged in the liquid storage groove in sequence along the first direction. In some embodiments, the pixel cavity has a rectangular structure in cross-section perpendicular to the first direction. In a plane perpendicular to the first direction, a liquid storage tank is arranged at least one included angle of the pixel cavity. In some embodiments, the plurality of pixel cavities are arranged in a matrix configuration in a plane perpendicular to the first direction. The intersection of the adjacent four pixel cavities is provided with a liquid storage groove, and one pixel cavity is communicated with at least one liquid storage groove. In some embodiments, at least one second electrode is disposed at each edge of the pixel cavity in a plane perpendicular to the first direction. In some embodiments, the second electrode is disposed to extend in the first direction. In some embodiments, the pixel cavity is disposed to extend along a first direction, and the reservoir is disposed with a plurality of sub-reservoirs disposed apart along the first direction. The number of the first electrodes is a plurality of, and at least one first electrode is correspondingly arranged in the sub-groove of one liquid storage groove along the first direction. In some embodiments, the pixel cavity is provided with a plurality of sub-