CN109581731B - Display panel, method for viewing point mark thereof and readable storage medium - Google Patents
Display panel, method for viewing point mark thereof and readable storage medium Download PDFInfo
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- CN109581731B CN109581731B CN201910061542.2A CN201910061542A CN109581731B CN 109581731 B CN109581731 B CN 109581731B CN 201910061542 A CN201910061542 A CN 201910061542A CN 109581731 B CN109581731 B CN 109581731B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
Abstract
The invention discloses a display panel, a method for marking a viewpoint of the display panel and a readable storage medium, comprising the following steps: the liquid crystal display panel comprises a plurality of point light sources arranged in an array on a substrate and a liquid crystal box which is positioned at the light emitting side of each point light source and has a set distance with each point light source; the light ray emergent angle range of the point light sources and the distance between the point light sources and the liquid crystal box meet the condition that light spots projected to the liquid crystal box by two adjacent point light sources are not overlapped; the liquid crystal cell includes: a plurality of pixel units arranged in an array; the multiple pixel units covered by the point light source are respectively the pixel units corresponding to different viewpoint sets. When a viewer watches the display panel at different watching positions, different viewpoints can be concentrated to correspond to different images by modulating the pixel units in the liquid crystal box, the light intensity distribution of the picture watched by the viewer is close to a real light field, different display images can be watched along with the change of the watching positions of the viewer, and therefore the simulation of the light field is achieved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a method for marking a viewpoint of the display panel and a readable storage medium.
Background
With the increasing demands of users on display effects, three-dimensional display technologies have been rapidly developed in recent years. The light field display is a technology for simulating light emitted by a real object sensed by human eyes so as to realize vivid three-dimensional display. Compared with the existing three-dimensional display technology, the light field display can realize restoration of the light field distribution on the surface of an object, the three-dimensional display is realized by reconstructing high-density directional light rays, a viewer can view the light field without wearing auxiliary equipment, and the viewing experience is improved.
However, the current light field display is based on cylindrical scanning imaging, the technical threshold is too high, 4-dimensional or even 5-dimensional data needs to be calculated in the direction of 360 degrees to simulate the light field, the calculation amount and the calculation difficulty are large, the equipment cost is high, and the popularization is difficult.
Disclosure of Invention
The invention provides a display panel, a method for marking a viewpoint of the display panel and a readable storage medium, which are used for solving the problems of high equipment cost and great technical difficulty of a light field display technology.
In a first aspect, the present invention provides a display panel comprising: the liquid crystal display panel comprises a substrate, a plurality of point light sources arranged in an array on the substrate, and liquid crystal boxes which are positioned at the light emitting sides of the point light sources and have set distances from the point light sources;
the light ray emergent angle range of the point light sources and the distance between the point light sources and the liquid crystal box meet the condition that light spots projected to the liquid crystal box by two adjacent point light sources are not overlapped;
the liquid crystal cell includes: a plurality of pixel units arranged in an array;
a light spot projected to the liquid crystal box by the point light source covers a plurality of pixel units, and the pixel units covered by the point light source are pixel units corresponding to different viewpoint sets respectively;
the viewpoint set is a set of a plurality of viewpoints formed by viewing positions relative to the display panel, and the viewpoints are intersections between a connecting line of the point light source and the viewing positions and the display surface of the liquid crystal cell.
In a possible implementation manner, the display panel provided by the present invention further includes: and the light shading plate is positioned between two adjacent point light sources, and the light shading plate is abutted against the surface of one side, facing the point light sources, of the substrate and the surface of one side, facing the point light sources, of the liquid crystal box.
In a possible implementation manner, in the display panel provided by the present invention, the point light source is a micro light emitting diode.
In a second aspect, the present invention provides a method for marking a viewpoint based on any one of the display panels, including:
determining a viewing position when the display panel is viewed according to the position relationship between each point light source in the display panel and the liquid crystal box and the light ray emergent angle range of each point light source;
determining the positions of pixel units at each viewpoint in a viewpoint set corresponding to each viewing position according to the position relation between each viewing position and the liquid crystal box;
and loading image data of each view point set corresponding to each viewing position.
In a possible implementation manner, in the method provided by the present invention, before determining, according to a positional relationship between each of the viewing positions and the liquid crystal cell, a position of a pixel unit at each viewpoint in a viewpoint set corresponding to each of the viewing positions, the method further includes:
and determining the number of images which can be displayed by the display panel according to the number of the point light sources and the number of the pixel units of the liquid crystal box.
In one possible implementation, the present invention provides the method as described above, wherein the maximum number of images that can be displayed by the display panel is determined by the following formula:
wherein A represents the maximum number of images that the display panel can display; the point light sources are arranged in a matrix of m rows and n columns, and the pixel units are arranged in a matrix of x rows and y columns.
In a possible implementation manner, in the method provided by the present invention, determining a viewing position when viewing the display panel according to a positional relationship between each point light source in the display panel and the liquid crystal cell and a light exit angle range of each point light source includes:
and taking the positions of a plurality of intersection points formed by the point light sources and the connecting lines of the pixel units covered by the light spots projected by the point light sources to the liquid crystal box as a plurality of viewing positions when the display panel is viewed.
In a possible implementation manner, in the method provided by the present invention, the determining, according to a positional relationship between each of the viewing positions and the liquid crystal cell, a position of a pixel unit at each of the viewpoints in a viewpoint set corresponding to each of the viewing positions includes:
determining the position of a viewpoint formed by a connecting line between the viewing position and each point light source on a display surface of the liquid crystal box, wherein the viewpoint is projected to a light spot of the liquid crystal box by the corresponding point light source;
and determining the position of the viewpoint on the display surface according to the relative position relationship of the spot position of the point light source projected to the liquid crystal box in the display surface and the position of the viewpoint in the spot of the corresponding point light source projected to the liquid crystal box, so as to obtain the position of the pixel unit at each viewpoint in the viewpoint set corresponding to each viewing position.
In a possible implementation manner, the present invention provides the above method, wherein the position of the viewpoint in the light spot of the corresponding point light source projected to the liquid crystal cell is determined by the following formula:
wherein S represents a position of the viewpoint in a spot where the corresponding point light source is projected onto the liquid crystal cell, and L1Represents the vertical distance, L, from the point light source to the liquid crystal cell2Represents the vertical distance, L, from the viewing position to the liquid crystal cell3Representing the width, L, of a light spot projected by the point light source onto the liquid crystal cell4Represents the distance between the orthographic projection point of the liquid crystal box and the central point of the light spot of the viewing position.
In a third aspect, the present invention provides a readable storage medium, where the readable storage medium stores display panel executable instructions, and the display panel executable instructions are configured to cause a display panel to execute any of the above methods for marking a viewpoint.
The invention has the following beneficial effects:
the invention provides a display panel, a method for marking a visual point thereof and a readable storage medium, wherein the display panel comprises: the liquid crystal display device comprises a substrate, a plurality of point light sources arranged in an array on the substrate, and a liquid crystal box positioned on the light emitting side of each point light source and spaced from each point light source by a set distance; the light ray emergent angle range of the point light sources and the distance between the point light sources and the liquid crystal box meet the condition that light spots projected to the liquid crystal box by two adjacent point light sources are not overlapped; the liquid crystal cell includes: a plurality of pixel units arranged in an array; a light spot projected by the point light source to the liquid crystal box covers a plurality of pixel units, and the pixel units covered by the point light source are pixel units corresponding to different viewpoint sets respectively; the viewpoint set is a set of a plurality of viewpoints formed by the viewing position relative to the display panel, and the viewpoints are intersections between a connecting line of the point light source and the viewing position and the display surface of the liquid crystal box. When a viewer watches the display panel at different watching positions, different viewpoints can be concentrated to correspond to different images by modulating the pixel units in the liquid crystal box, the light intensity distribution of the picture watched by the viewer is close to a real light field, different display images can be watched along with the change of the watching positions of the viewer, and therefore the simulation of the light field is achieved. Compared with the light field display scheme based on cylindrical scanning imaging in the prior art, the light modulation processing process performed during light field simulation is much simpler, the equipment cost is greatly reduced, and the popularization and the use are more facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;
FIG. 2a is a schematic diagram of a view set according to an embodiment of the present invention;
FIG. 2b is a schematic diagram of a second view set according to the embodiment of the present invention;
fig. 3 is a second schematic cross-sectional view illustrating a display panel according to an embodiment of the invention;
FIG. 4 is a flowchart of a method for marking a viewpoint of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a viewpoint location provided by an embodiment of the present invention;
fig. 6 is an effect diagram of the viewpoint label provided by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes a display panel, a method for marking a view point thereof, and a readable storage medium in detail with reference to the accompanying drawings.
In a first aspect of the embodiments of the present invention, there is provided a display panel, as shown in fig. 1, including: the liquid crystal display device comprises a substrate 11, a plurality of point light sources 12 arranged in an array on the substrate 11, and a liquid crystal box 13 located at the light emitting side of each point light source 12 and a set distance away from each point light source.
The light exit angle range of the point light sources 12 and the distance between the point light sources 12 and the liquid crystal cell 13 satisfy the condition that light spots projected to the liquid crystal cell 13 by two adjacent point light sources 12 do not overlap each other.
As shown in fig. 1, the liquid crystal cell 13 includes: a plurality of pixel units 131 arranged in an array; the light spot projected by the point light source 12 to the liquid crystal cell 13 covers a plurality of pixel units 131, and the pixel units 131 covered by the point light source 12 are respectively corresponding to different viewpoint sets.
In the embodiment of the present invention, as shown in fig. 1, the viewpoint P refers to an intersection point between the connection of the point light source 12 and the viewing position and the display surface of the liquid crystal cell 13. In the same viewing position, the connection between different point light sources 12 and the viewing position and the position of the viewing point formed between the display surfaces of the liquid crystal cells 13 are different, and the image viewed by the viewer at the same viewing position is the image formed by these viewing points. As the viewing position of the viewer changes, the position of the viewpoint formed by the viewer and the display panel changes accordingly, and as shown in fig. 2a, when the viewer views the display panel at the position S1, the viewed viewpoint is P; when the viewer moves to the position of S2, the viewpoint is viewed as P'. Then it can be achieved that different images are viewed at different viewing positions, as long as different modulation signals are applied to the corresponding sets of viewpoints for the different viewing positions.
By adopting the display panel provided by the embodiment of the invention, when a viewer watches the display panel at different watching positions, different viewpoints can be concentrated and correspond to different images by modulating the pixel units in the liquid crystal box, the light intensity distribution of the picture watched by the viewer is close to a real light field, and different display images can be watched along with the change of the watching positions of the viewer, so that the simulation of the light field is realized. Compared with the light field display scheme based on cylindrical scanning imaging in the prior art, the light modulation processing process performed during light field simulation is much simpler, the equipment cost is greatly reduced, and the popularization and the use are more facilitated.
Because the display panel provided by the embodiment of the invention forms a plurality of viewpoints on the light-emitting surface of the liquid crystal box 13 by the direct light transmission principle, light spots projected by each point light source 12 onto the liquid crystal box 13 are not overlapped with each other, so that the situation that one viewpoint belongs to more than two viewpoint sets can be avoided, and the crosstalk between the viewpoints is avoided. However, if the light spots projected onto the liquid crystal cell 13 by two adjacent point light sources 12 do not overlap with each other, it is necessary to set the distance between two adjacent point light sources 12 to be large enough, and the larger the distance between the point light sources 12, the smaller the number of point light sources 12 in a limited space, and the resolution of an image displayed by a viewpoint set viewed by a viewer is related to the number of point light sources, and the larger the number of point light sources 12, the larger the image resolution, and the smaller the number of point light sources 12, the smaller the image resolution.
In order to improve the image resolution of the display panel, as shown in fig. 3, a light shielding plate 14 may be disposed between two adjacent point light sources 12, and the light shielding plate 14 abuts against a surface of the substrate 11 facing the point light sources 12 and a surface of the liquid crystal cell 13 facing the point light sources 12. The light shielding plates 14 are arranged between two adjacent point light sources 12, so that the projection range of the light emitted by the point light sources 12 can be limited to the area between the adjacent light shielding plates 14, even if the range of the light emitted by the point light sources 12 is relatively large, the light is shielded by the adjacent light shielding plates 14 and does not emit into the projection area of the adjacent point light sources, the arrangement number of the point light sources 12 can be increased, and the resolution of the displayed image is improved.
In practical applications, the point light source 12 in the display panel may be a micro light emitting diode. The size of the micro light emitting diode is generally below 200 μm, and the image resolution of the display panel can reach 1-2K. In addition, other point light sources with smaller size may be used, which is not limited herein.
In a second aspect of the embodiment of the present invention, a method for marking a viewpoint based on any one of the display panels is further provided, and as shown in fig. 4, the method for marking a viewpoint provided in the embodiment of the present invention may include:
s10, determining the viewing position when viewing the display panel according to the position relation between each point light source and the liquid crystal box in the display panel and the light emergent angle range of each point light source;
and S20, determining the positions of the pixel units at each viewpoint in the viewpoint set corresponding to each viewing position according to the position relation between each viewing position and the liquid crystal box.
And the image data loaded by each viewpoint set corresponding to each viewing position is different.
It can be understood that the light-emitting angle of a point light source is fixed, and then the light-emitting angle of the display panel can be determined after the positional relationship between the point light source and the liquid crystal cell is fixed, and a viewer can view the display image of the display panel only at a position within the light-emitting angle coverage range of the display panel. The formation of the viewpoint follows the principle of linear propagation of light, so that after the light emergent angle range of the point light source and the position relationship between the point light source and the liquid crystal box are fixed, the pixel unit which can be influenced by the light of each point light source can be determined, and the watching positions of a viewer can watch the display image of the display panel. After a plurality of viewing positions are determined, the intersection point with the liquid crystal cell display panel is obtained by connecting each point light source for each viewing position, and thereby the position of each viewpoint corresponding to the viewing position can be determined. After the positions of the viewpoints corresponding to the viewing position are determined, the pixel units at the viewpoint positions can be loaded with light modulation signals, and the transmittance of light can be changed, so that image display at the viewing position is realized. The light modulation signals of different images can be loaded aiming at different watching positions, so that a viewer can watch different images at different positions, and a three-dimensional image can be watched due to the retention effect of human eyes on the images.
Further, before the step S20, the method for marking a viewpoint according to the embodiment of the present invention may further include:
the number of images that can be displayed by the display panel is determined according to the number of point light sources and the number of pixel units of the liquid crystal cells.
It can be understood that the number of pixel units onto which a point light source can project is limited, and not all pixels onto which the point light source can project can be used for image display, for example, a viewpoint is an invalid viewpoint if some light sources with a larger exit angle cannot form a viewpoint set with other viewpoints even though the viewpoint can form a viewpoint on the display surface of the liquid crystal cell. In order to avoid the generation of invalid viewpoints, a point light source is generally selected to emit light to a limited number of nearby pixel units to form viewpoints, so that by connecting each point light source with each corresponding pixel unit, a viewing position can be obtained at a position where each point light source is connected with an intersection point, and thus the number of viewing positions, that is, the number of images that can be displayed by the display panel, is determined.
Theoretically, if the point light sources are arranged in a matrix of m rows and n columns and the pixel units are arranged in a matrix of x rows and y columns, the maximum number a of images that can be displayed by the display panel can be determined by the following formula:
one point light source can emit light to a number of adjacent pixel units to form a viewpoint, so that the number of the point light sources arranged according to the above rule and the number of the viewpoint sets that the pixel units can form is a, and the number of images that can be displayed is a at most. After the number of the images displayed by the display panel at most is determined, the step of marking the view points of each view point set can be carried out, after a plurality of view point sets are marked, a plurality of images are respectively loaded into the corresponding view point sets, the synthesized image is displayed on the display surface of the liquid crystal box, the corresponding image can be seen at a specific viewing position, and the simulation of the light field is realized. When the maximum number of images are synthesized, the image resolution is m × n.
In a specific implementation, in step S10, the determining a viewing position when viewing the display panel according to the positional relationship between each point light source and the liquid crystal cell in the display panel and the light emitting angle range of each point light source includes:
and taking the positions of a plurality of intersection points formed by connecting lines of the pixel units covered by the faculae projected by each point light source and the point light source to the liquid crystal box as a plurality of viewing positions when the display panel is viewed.
As shown in fig. 1 and 3, the light emitted from a point light source 12 forms a light spot on the display panel of the liquid crystal cell 13, and a viewing point for displaying an image can be formed within the light spot. The connection line between each point light source 12 and each pixel unit 131 within the light spot coverage may have intersection points with the connection between other point light sources and each pixel unit within the light spot coverage, and the positions of the intersection points are the viewing positions of the viewers when the images are displayed.
Further, in step S20, determining the position of the pixel cell at each viewpoint in the viewpoint set corresponding to each viewing position according to the positional relationship between each viewing position and the liquid crystal cell includes:
determining the position of a viewpoint formed by a connecting line between the viewing position and each point light source on the display surface of the liquid crystal box in a light spot projected by the corresponding point light source to the liquid crystal box;
and determining the position of the viewpoint on the display surface according to the relative position relationship of the spot position of the point light source projected to the liquid crystal box in the display surface and the position of the viewpoint in the spot of the corresponding point light source projected to the liquid crystal box, so as to obtain the position of the pixel unit at each viewpoint in the viewpoint set corresponding to each viewing position.
Wherein, the position of the viewpoint in the spot where the corresponding point light source is projected to the liquid crystal cell can be determined by the following formula:
referring specifically to FIG. 5, S represents the location of the viewpoint within the spot of the corresponding point source projected onto the liquid crystal cell, L1Represents the vertical distance, L, of the point light source from the liquid crystal cell2Denotes the vertical distance, L, from the viewing position to the liquid crystal cell3Representing the width, L, of the spot of the point source projected onto the liquid crystal cell4Representing the distance between the orthographic projection point of the liquid crystal box and the central point of the light spot of the viewing position.
The angle formed by the connection line of the point light source 12 and the viewing position and the substrate 11 is theta, and the angle formed by the connection of the point light source 12 and the viewing position and the plane of the liquid crystal box is also theta. Thus, the following equation can be obtained:
from this, the distance x can be calculated:
and the distance S and the distance x have the relationship as shown in the figure, so that:
a minus sign is taken when viewpoint P is located to the left of the midpoint of the point light source and a plus sign is taken when viewpoint P is located to the right of the midpoint of the point light source.
Therefore, the viewpoint position of each point light source in the light spot range generated by the point light source relative to a specific viewing position can be calculated, and the position of each viewpoint on the display surface of the liquid crystal box can be obtained according to the position relation between the light spot range generated by each point light source and the liquid crystal box display panel, so that the position of the pixel unit at the position can be obtained. After the positions of the pixel units corresponding to each view point set are determined, the light modulation signals can be respectively applied to the pixel units corresponding to each view point set according to the content of the display image, so that the display surface of the liquid crystal box can display a composite image corresponding to a plurality of viewing positions. Different display images can be viewed as the viewing moves through the various viewing positions.
For example, if the point light sources are arranged in a3 × 3 array and the pixel units of the liquid crystal cell are arranged in a 6 × 6 array, the light of one point light source can cover 2 × 2 pixel units above the point light source. The display panel with the structure can form 4 viewpoint sets which are marked as a viewpoint set A, a viewpoint set B, a viewpoint set C and a viewpoint set D. Each set of views corresponds to a viewing position and each set of views corresponds to an image. As shown in fig. 6, the pixel cells corresponding to the viewing points formed by the viewing point set a on the display surface of the liquid crystal cell are a11, a12, a13, a21, a22, a23, a31, a32, and a 33; the pixel units corresponding to the viewpoints formed on the display surface of the liquid crystal box by the viewpoint set B are respectively B11, B12, B13, B21, B22, B23, B31, B32 and B33; the pixel units corresponding to the viewpoints formed by the viewpoint set C on the display surface of the liquid crystal box are respectively C11, C12, C13, C21, C22, C23, C31, C32 and C33; the pixel units corresponding to the view points formed on the display surface of the liquid crystal cell by the view point set D are respectively D11, D12, D13, D21, D22, D23, D31, D32 and D33. When displaying images, the light modulation signals of different images can be respectively applied to the pixel unit groups corresponding to the viewpoint sets A-D, so that a composite image of 4 images can be formed, and the display images respectively corresponding to the 4 viewpoint sets can be seen at 4 specific viewing positions, thereby realizing light field display.
In a third aspect of the embodiments of the present invention, a readable storage medium is provided, where the readable storage medium stores display panel executable instructions, and the display panel executable instructions are configured to enable a display panel to execute any one of the above methods for marking a viewpoint.
The embodiment of the invention provides a display panel, a method for marking a visual point of the display panel and a readable storage medium, wherein the display panel comprises the following components: the liquid crystal display device comprises a substrate, a plurality of point light sources arranged in an array on the substrate, and a liquid crystal box positioned on the light emitting side of each point light source and spaced from each point light source by a set distance; the light ray emergent angle range of the point light sources and the distance between the point light sources and the liquid crystal box meet the condition that light spots projected to the liquid crystal box by two adjacent point light sources are not overlapped; the liquid crystal cell includes: a plurality of pixel units arranged in an array; a light spot projected by the point light source to the liquid crystal box covers a plurality of pixel units, and the pixel units covered by the point light source are pixel units corresponding to different viewpoint sets respectively; the viewpoint set is a set of a plurality of viewpoints formed by the viewing position relative to the display panel, and the viewpoints are intersections between a connecting line of the point light source and the viewing position and the display surface of the liquid crystal box. When a viewer watches the display panel at different watching positions, different viewpoints can be concentrated to correspond to different images by modulating the pixel units in the liquid crystal box, the light intensity distribution of the picture watched by the viewer is close to a real light field, different display images can be watched along with the change of the watching positions of the viewer, and therefore the simulation of the light field is achieved. Compared with the light field display scheme based on cylindrical scanning imaging in the prior art, the light modulation processing process performed during light field simulation is much simpler, the equipment cost is greatly reduced, and the popularization and the use are more facilitated.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A display panel, comprising: the liquid crystal display panel comprises a substrate, a plurality of point light sources arranged in an array on the substrate, and liquid crystal boxes which are positioned at the light emitting sides of the point light sources and have set distances from the point light sources;
the light ray emergent angle range of the point light sources and the distance between the point light sources and the liquid crystal box meet the condition that light spots projected to the liquid crystal box by two adjacent point light sources are not overlapped;
the liquid crystal cell includes: a plurality of pixel units arranged in an array;
a light spot projected to the liquid crystal box by the point light source covers a plurality of pixel units, and the pixel units covered by the point light source are pixel units corresponding to different viewpoint sets respectively;
the viewpoint set is a set of a plurality of viewpoints formed by viewing positions relative to the display panel, and the viewpoints are intersections between connecting lines of the point light sources and the viewing positions and the display surface of the liquid crystal box;
the display panel further includes: and the light shading plate is positioned between two adjacent point light sources, and the light shading plate is abutted against the surface of one side, facing the point light sources, of the substrate and the surface of one side, facing the point light sources, of the liquid crystal box.
2. The display panel of claim 1, wherein the point light sources are micro light emitting diodes.
3. A method for viewing a point target based on the display panel of claim 1 or 2, comprising:
determining a viewing position when the display panel is viewed according to the position relationship between each point light source in the display panel and the liquid crystal box and the light ray emergent angle range of each point light source;
determining the positions of pixel units at each viewpoint in a viewpoint set corresponding to each viewing position according to the position relation between each viewing position and the liquid crystal box;
and loading image data of each view point set corresponding to each viewing position.
4. The method for marking a viewpoint as claimed in claim 3, wherein before determining the position of the pixel unit at each viewpoint in the viewpoint set corresponding to each viewing position according to the positional relationship between each viewing position and the liquid crystal cell, the method further comprises:
and determining the number of images which can be displayed by the display panel according to the number of the point light sources and the number of the pixel units of the liquid crystal box.
5. A method of visual target according to claim 4, wherein the maximum number of images that the display panel is capable of displaying is determined by the formula:
wherein A represents the maximum number of images that the display panel can display; the point light sources are arranged in a matrix of m rows and n columns, and the pixel units are arranged in a matrix of x rows and y columns.
6. The method of claim 3, wherein determining the viewing position when viewing the display panel according to the position relationship between each point light source and the liquid crystal cell in the display panel and the light exit angle range of each point light source comprises:
and taking the positions of a plurality of intersection points formed by the point light sources and the connecting lines of the pixel units covered by the light spots projected by the point light sources to the liquid crystal box as a plurality of viewing positions when the display panel is viewed.
7. The method for marking a viewpoint according to claim 3, wherein the determining the position of the pixel unit at each viewpoint in the viewpoint set corresponding to each viewing position according to the positional relationship between each viewing position and the liquid crystal cell comprises:
determining the position of a viewpoint formed by a connecting line between the viewing position and each point light source on a display surface of the liquid crystal box, wherein the viewpoint is projected to a light spot of the liquid crystal box by the corresponding point light source;
and determining the position of the viewpoint on the display surface according to the relative position relationship of the spot position of the point light source projected to the liquid crystal box in the display surface and the position of the viewpoint in the spot of the corresponding point light source projected to the liquid crystal box, so as to obtain the position of the pixel unit at each viewpoint in the viewpoint set corresponding to each viewing position.
8. The method of claim 7, wherein the position of the viewpoint within the spot of the corresponding point light source projected onto the liquid crystal cell is determined by the following formula:
wherein S represents a position of the viewpoint in a spot where the corresponding point light source is projected onto the liquid crystal cell, and L1Represents the vertical distance, L, from the point light source to the liquid crystal cell2Represents the vertical distance, L, from the viewing position to the liquid crystal cell3Representing the width, L, of a light spot projected by the point light source onto the liquid crystal cell4Represents the distance between the orthographic projection point of the liquid crystal box and the central point of the light spot of the viewing position.
9. A readable storage medium storing display panel executable instructions for causing a display panel to perform the method of viewing signage as in any one of claims 3-8.
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