Display device

Abstract

A display device comprises a display panel (10) and a liquid crystal light control panel (20). The display panel (10) comprises a plurality of display pixels (DP), the liquid crystal light control panel (20) and the display panel (10) are arranged in a laminated mode, and the liquid crystal light control panel (20) comprises a first substrate (201), a first electrode layer (202), a liquid crystal layer (203), a second electrode layer (204) and a second substrate (205); the first electrode layer (202) is arranged on the first substrate (201), the liquid crystal layer (203) is arranged on the side, away from the first substrate (201), of the first electrode layer (202), the second electrode layer (204) is arranged on the side, away from the first substrate (201), of the liquid crystal layer (203), and the second substrate (205) is arranged on the side, away from the first substrate (201), of the second electrode layer (204). The first electrode layer (202) and the second electrode layer (204) are configured to be controlled to apply a first control signal and a second control signal to the liquid crystal layer (203), under the first control signal, the liquid crystal layer (203) forms a first equivalent prism array (21), and under the second control signal, the liquid crystal layer (203) forms a second equivalent prism array (22). The display device can realize naked eye 3D display in various scenes.

Description

Display device Technical Field

[0001] An embodiment of the present disclosure relates to a display device. Background Art

[0002] Three-dimensional (3D) display devices primarily include glasses-based 3D mode and glasses-free 3D mode. Glasses-based 3D display devices require the wearing of specialized 3D glasses. The left and right lenses each allow linear polarization of light with different polarization directions to pass through. As a result, the images viewed by the left and right eyes are formed by linear polarization of light with different polarization directions. The brain integrates the left and right eye images to create a three-dimensional image. Because glasses-based 3D displays require specialized glasses to view, otherwise the image becomes blurred, limiting their application. Consequently, glasses-free 3D display devices are attracting increasing attention.

[0003] Summary of the Invention

[0004] At least one embodiment of the present disclosure provides a display device, which includes a display panel and a liquid crystal light control panel; the display panel includes a plurality of display pixels, and the liquid crystal light control panel is stacked with the display panel, including a first substrate, a first electrode layer, a liquid crystal layer, a second electrode layer and a second substrate; the first electrode layer is arranged on the first substrate, the liquid crystal layer is arranged on a side of the first electrode layer away from the first substrate, the second electrode layer is arranged on a side of the liquid crystal layer away from the first substrate, and the second substrate is arranged on a side of the second electrode layer away from the first substrate, wherein the first electrode layer and the second electrode layer are configured to be able to be controlled to apply a first control signal and a second control signal to the liquid crystal layer, and under the first control signal, the liquid crystal layer forms a first equivalent prism array, and under the second control signal, the liquid crystal layer forms a second equivalent prism array.

[0005] For example, in the display device provided by at least one embodiment of the present disclosure, the first equivalent prism array includes a plurality of first equivalent prisms extending along a first direction and arranged along a second direction, and the spacing between the central axes of two adjacent first equivalent prisms among the plurality of first equivalent prisms is a first spacing D1; the second equivalent prism array includes a plurality of second equivalent prisms extending along the first direction and arranged along the second direction, and the spacing between the central axes of two adjacent second equivalent prisms among the plurality of second equivalent prisms is a second spacing D2.

[0006] For example, in the display device provided in at least one embodiment of the present disclosure, the second distance D2 is greater than the first distance D1, a first light-shielding portion is provided between the two adjacent first equivalent prisms, and the width of the first light-shielding portion along the second direction is a first width W1, and a second light-shielding portion is provided between the two adjacent second equivalent prisms, and the width of the second light-shielding portion along the second direction is a second width W2, and the second width W2 is greater than the first width W1.

[0007] For example, the display device provided by at least one embodiment of the present disclosure also includes a human eye tracking device and a control circuit. The human eye tracking device is configured to identify the position of a human eye. The control circuit is electrically connected to the human eye tracking device and the liquid crystal light control panel, and is configured to control the first electrode layer and the second electrode layer to apply a first control signal when the human eye tracking device identifies that N pairs of human eyes are included in a viewing angle range of n degrees. When the human eye tracking device identifies that M pairs of human eyes are included in a viewing angle range of m degrees, the control circuit controls the first electrode layer and the second electrode layer to apply a second control signal. M and N are positive integers, and m is greater than n.

[0008] For example, in the display device provided by at least one embodiment of the present disclosure, the first electrode layer includes a plurality of first strip electrodes extending along the first direction and arranged along the second direction. Under the first control signal, the plurality of first strip electrodes are controlled to apply a driving voltage that varies along the second direction according to a first period to the liquid crystal layer to form the plurality of first equivalent prisms; under the second control signal, the plurality of first strip electrodes are controlled to apply a driving voltage that varies along the second direction according to a second period to the liquid crystal layer to form the plurality of second equivalent prisms.

[0009] For example, in the display device provided by at least one embodiment of the present disclosure, the second electrode layer includes a plurality of second strip electrodes extending along the first direction and arranged along the second direction, or the second electrode layer includes a plurality of second strip electrodes extending along the second direction and arranged along the first direction, or the second electrode layer is a surface electrode, and under the first control signal and the second control signal, a common voltage is applied to the second electrode layer.

[0010] For example, in the display device provided by at least one embodiment of the present disclosure, the liquid crystal light control panel also includes a first polarizer, a first alignment layer, a second polarizer and a second alignment layer; the first polarizer is arranged on a side of the first substrate away from the second substrate, the first alignment layer is arranged on a side of the first electrode layer close to the liquid crystal layer, the second polarizer is arranged on a side of the second substrate away from the first substrate, and the second alignment layer is arranged on a side of the second electrode layer close to the liquid crystal layer.

[0011] For example, in the display device provided by at least one embodiment of the present disclosure, the angle between the transmittance axis of the first polarizer and the first direction is A, the angle between the alignment direction of the first alignment layer and the transmittance axis of the first polarizer is 5 degrees to 15 degrees, the angle between the transmittance axis of the second polarizer and the first direction is A, and the angle between the alignment direction of the second alignment layer and the transmittance axis of the second polarizer is 5 degrees to 15 degrees; under the first control signal, the multiple first strip electrodes corresponding to each of the multiple first equivalent prisms are controlled to apply a first driving voltage to the liquid crystal layer, and the first driving voltage tends to decrease along the direction from the edge to the center axis of the first equivalent prism; under the second control signal, the multiple first strip electrodes corresponding to each of the multiple second equivalent prisms are controlled to apply a second driving voltage to the liquid crystal layer, and the second driving voltage tends to decrease along the direction from the edge to the center axis of the second equivalent prism.

[0012] For example, in the display device provided by at least one embodiment of the present disclosure, under the first control signal, the multiple first strip electrodes corresponding to the first light-shielding portion are controlled not to be applied with a driving voltage, and under the second control signal, the multiple first strip electrodes corresponding to the second light-shielding portion are controlled not to be applied with a driving voltage.

[0013] For example, in the display device provided by at least one embodiment of the present disclosure, the angle between the transmittance axis of the first polarizer and the first direction is A, the angle between the alignment direction of the first alignment layer and the transmittance axis of the first polarizer is 30 degrees to 60 degrees, the angle between the transmittance axis of the second polarizer and the first direction is A, and the angle between the alignment direction of the second alignment layer and the transmittance axis of the second polarizer is 30 degrees to 60 degrees; under the first control signal, the multiple first strip electrodes corresponding to each of the multiple first equivalent prisms are controlled to apply a first driving voltage to the liquid crystal layer, and the first driving voltage tends to decrease along the direction from the edge to the center axis of the first equivalent prism; under the second control signal, the multiple first strip electrodes corresponding to each of the multiple second equivalent prisms are controlled to apply a second driving voltage to the liquid crystal layer, and the second driving voltage tends to decrease along the direction from the edge to the center axis of the second equivalent prism.

[0014] For example, in the display device provided by at least one embodiment of the present disclosure, under the first control signal, the multiple first strip electrodes corresponding to the first light-shielding portion are controlled to apply a third driving voltage to the liquid crystal layer, and under the second control signal, the multiple first strip electrodes corresponding to the second light-shielding portion are controlled to apply a third driving voltage to the liquid crystal layer.

[0015] For example, in the display device provided by at least one embodiment of the present disclosure, the angle between the transmission axis of the first polarizer and the first direction is A, the alignment direction of the first alignment layer is parallel to the transmission axis of the first polarizer, the angle between the transmission axis of the second polarizer and the first direction is A, and the alignment direction of the second alignment layer is parallel to the transmission axis of the second polarizer; under the first control signal, the multiple first strip electrodes corresponding to each of the multiple first equivalent prisms are controlled to apply a first driving voltage to the liquid crystal layer, and the first driving voltage tends to decrease along the direction from the edge to the center axis of the first equivalent prism; under the second control signal, the multiple first strip electrodes corresponding to each of the multiple second equivalent prisms are controlled to apply a second driving voltage to the liquid crystal layer, and the second driving voltage tends to decrease along the direction from the edge to the center axis of the second equivalent prism.

[0016] For example, in the display device provided by at least one embodiment of the present disclosure, under the first control signal, at least two of the multiple first strip electrodes corresponding to the first light-shielding portion are controlled to apply a driving voltage difference greater than 5V to the liquid crystal layer, and under the second control signal, at least two of the multiple first strip electrodes corresponding to the second light-shielding portion are controlled to apply a driving voltage difference greater than 5V to the liquid crystal layer.

[0017] For example, in the display device provided by at least one embodiment of the present disclosure, the angle between the transmission axis of the first polarizer and the first direction is A, the alignment direction of the first alignment layer is parallel to the transmission axis of the first polarizer, the angle between the transmission axis of the second polarizer and the first direction is A+90 degrees, and the alignment direction of the second alignment layer is parallel to the transmission axis of the second polarizer; under the first control signal, the multiple first strip electrodes corresponding to each of the multiple first equivalent prisms are controlled to apply a first driving voltage to the liquid crystal layer, and the first driving voltage tends to decrease along the direction from the edge to the center axis of the first equivalent prism; under the second control signal, the multiple first strip electrodes corresponding to each of the multiple second equivalent prisms are controlled to apply a second driving voltage to the liquid crystal layer, and the second driving voltage tends to decrease along the direction from the edge to the center axis of the second equivalent prism.

[0018] For example, in the display device provided by at least one embodiment of the present disclosure, under the first control signal, the multiple first strip electrodes corresponding to the first light-shielding portion are controlled to apply a third driving voltage to the liquid crystal layer, and under the second control signal, the multiple first strip electrodes corresponding to the second light-shielding portion are controlled to apply a third driving voltage to the liquid crystal layer.

[0019] For example, in the display device provided by at least one embodiment of the present disclosure, the first electrode layer includes a plurality of first strip electrodes extending along the first direction and arranged along the second direction, and the plurality of first strip electrodes are arranged according to a third period along the second direction. Within the third period, along the second direction, the width of the plurality of first strip electrodes gradually increases and then gradually decreases.

[0020] For example, in the display device provided by at least one embodiment of the present disclosure, the first electrode layer includes a plurality of first strip electrodes extending along the first direction and arranged along the second direction, and the plurality of first strip electrodes are configured to be controlled to provide a fourth driving voltage to the liquid crystal layer to form a plurality of Fresnel lenses arranged along the second direction, each of the plurality of Fresnel lenses includes a main lens portion and transition portions located on both sides of the main lens portion, and the liquid crystal layer forms a dark area in the transition portion under the drive of the fourth driving voltage.

[0021] For example, in the display device provided by at least one embodiment of the present disclosure, the liquid crystal layer includes a plurality of liquid crystal setting areas extending along the first direction and arranged along the second direction, and adjacent liquid crystal setting areas among the plurality of liquid crystal setting areas are separated by support columns. Under the first control signal, each of the plurality of liquid crystal setting areas forms a first equivalent prism, and under the second control signal, each of the plurality of liquid crystal setting areas forms a plurality of second equivalent prisms.

[0022] For example, in the display device provided in at least one embodiment of the present disclosure, the support column is integrally provided with the first substrate or the second substrate.

[0023] For example, in the display device provided by at least one embodiment of the present disclosure, the first electrode layer includes a plurality of electrode sublayers arranged in a stacked manner, each of the plurality of electrode sublayers includes a plurality of sub-electrodes extending along the first direction and arranged along the second direction, the orthographic projections of the sub-electrodes in two adjacent electrode sublayers on the first substrate at least partially overlap, and the width of the surfaces of the plurality of sub-electrodes of the plurality of electrode sublayers facing the liquid crystal layer and not blocked by other sub-electrodes along the second direction is greater than 0.

[0024] For example, in the display device provided by at least one embodiment of the present disclosure, the widths of the surfaces of the multiple sub-electrodes of the multiple electrode sub-layers facing the liquid crystal layer and not blocked by other sub-electrodes along the second direction are substantially the same.

[0025] For example, in the display device provided by at least one embodiment of the present disclosure, the multiple electrode sublayers include a first electrode sublayer and a second electrode sublayer that are stacked, the first electrode sublayer includes a plurality of first sub-electrodes extending along the first direction and arranged along the second direction, the second electrode sublayer includes a plurality of second sub-electrodes extending along the first direction and arranged along the second direction, and the plurality of first sub-electrodes and the plurality of second sub-electrodes are stacked in a stepped manner.

[0026] For example, in the display device provided by at least one embodiment of the present disclosure, the multiple electrode sublayers include a first electrode sublayer and a second electrode sublayer that are stacked, the first electrode sublayer includes a plurality of first sub-electrodes extending along the first direction and arranged along the second direction, and a first gap exists between adjacent first sub-electrodes, the second electrode sublayer includes a plurality of second sub-electrodes extending along the first direction and arranged along the second direction, and a second gap exists between adjacent second sub-electrodes, the orthographic projection of the first gap on the first substrate is located inside a second sub-electrode, and the orthographic projection of the second gap on the first substrate is located inside a first sub-electrode.

[0027] For example, in the display device provided in at least one embodiment of the present disclosure, the first equivalent prism array includes a plurality of first equivalent prisms extending along a first direction and arranged along a second direction, and the second equivalent prism array includes a plurality of second equivalent prisms extending along the second direction and arranged along the first direction.

[0028] For example, in the display device provided by at least one embodiment of the present disclosure, each of the multiple display pixels includes multiple display sub-pixels, and the multiple display sub-pixels are arranged in an array along the first direction and the second direction; the edge of the light-emitting area of ​​each of the multiple display sub-pixels is a straight line, and the straight line is parallel to the first direction or the second direction.

[0029] For example, in the display device provided by at least one embodiment of the present disclosure, each of the multiple display pixels includes multiple display sub-pixels, the size of each of the multiple display sub-pixels along the first direction is L1, the size along the second direction is L2, the width of each of the multiple first equivalent prisms along the second direction is L3, and the length of each of the multiple second equivalent prisms along the first direction is L4, then L4 / L1=L3 / L2.

[0030] For example, in the display device provided by at least one embodiment of the present disclosure, each of the multiple display pixels has the same size along the first direction and the second direction, the first electrode layer includes a plurality of first strip electrodes extending along the first direction and arranged along the second direction, and the second electrode layer includes a plurality of second strip electrodes extending along the second direction and arranged along the first direction; under the first control signal, a driving voltage is applied to the first electrode layer, and a common voltage is applied to the second electrode layer; under the second control signal, a driving voltage is applied to the second electrode layer, and a common voltage is applied to the first electrode layer.

[0031] For example, in the display device provided by at least one embodiment of the present disclosure, each of the plurality of display pixels includes a plurality of display sub-pixels, and the plurality of display sub-pixels have the same overall size along the first direction and the second direction.

[0032] For example, the display device provided by at least one embodiment of the present disclosure also includes a human eye tracking device and a control circuit; the human eye tracking device is configured to identify the position of the human eye, and the control circuit is electrically connected to the human eye tracking device and the liquid crystal light control panel, and is configured to control the first electrode layer and the second electrode layer to apply a first control signal when the human eye tracking device identifies that the line connecting a single eye and a double eye is along the second direction, and to control the first electrode layer and the second electrode layer to apply a second control signal when the human eye tracking device identifies that the line connecting a single eye and a double eye is along the first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0034] FIG1 is a schematic plan view of a display device according to at least one embodiment of the present disclosure;

[0035] 2 and 3 are schematic cross-sectional views of the display device along line AA in FIG. 1 and schematic cross-sectional views of an equivalent prism array formed under different control signals, respectively;

[0036] FIG4 is a cross-sectional schematic diagram of a liquid crystal light control panel in a display device provided by at least one embodiment of the present disclosure;

[0037] FIG5 is a schematic diagram of a display device provided by at least one embodiment of the present disclosure used in different scenarios;

[0038] FIG6 is another cross-sectional schematic diagram of a liquid crystal light control panel in a display device provided by at least one embodiment of the present disclosure;

[0039] 7 is a schematic diagram of polarization directions of polarizers and alignment directions of alignment layers of a liquid crystal light control panel in a display device according to at least one embodiment of the present disclosure;

[0040] FIG8 is a schematic diagram of a liquid crystal light control panel forming an equivalent prism in a display device provided by at least one embodiment of the present disclosure;

[0041] FIG9 is another schematic diagram of the polarization directions of the polarizers and the alignment directions of the alignment layers of the liquid crystal light control panel in the display device provided by at least one embodiment of the present disclosure;

[0042] FIG10 is another schematic diagram of the polarization directions of the polarizers and the alignment directions of the alignment layers of the liquid crystal light control panel in the display device provided by at least one embodiment of the present disclosure;

[0043] FIG11 is another schematic diagram of the polarization directions of the polarizers and the alignment directions of the alignment layers of the liquid crystal light control panel in the display device provided by at least one embodiment of the present disclosure;

[0044] 12A and 12B are schematic diagrams of a first electrode layer of a liquid crystal light control panel and an equivalent prism array formed by the liquid crystal light control panel in a display device provided by at least one embodiment of the present disclosure;

[0045] FIG13 is another schematic diagram of the first electrode layer of the liquid crystal light control panel and the equivalent prism array formed by the liquid crystal light control panel in the display device provided by at least one embodiment of the present disclosure;

[0046] 14 and 15 are further cross-sectional schematic diagrams of the liquid crystal light control panel in the display device provided by at least one embodiment of the present disclosure;

[0047] 16 to 19 are cross-sectional schematic diagrams showing first electrode layers with different structures in a liquid crystal light control panel of a display device provided by at least one embodiment of the present disclosure;

[0048] 20 and 21 are schematic diagrams showing that a liquid crystal light control panel in a display device according to at least one embodiment of the present disclosure forms equivalent prism arrays along different directions;

[0049] FIG22 and FIG23 are schematic diagrams of a display device provided by at least one embodiment of the present disclosure when viewed from different directions; and

[0050] FIG24 is a schematic diagram of display pixels of a display panel in a display device provided by at least one embodiment of the present disclosure. DETAILED DESCRIPTION

[0051] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0052] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0053] Among numerous naked-eye 3D display technologies, cylindrical microprism array 3D technology is highly favored due to its low process cost and excellent light control capabilities. In this technology, a display device can achieve 3D display by combining a traditional 2D display device with a microprism array. A microprism array typically includes a certain number and structure of microprisms. These microprisms typically have a fixed structure, such as a fixed orientation. This results in optimal viewing only when the line connecting the two eyes is perpendicular to the direction of the microprisms, making it difficult to adapt to scenarios with a variable number of viewers.

[0054] At least one embodiment of the present disclosure provides a display device, which includes a display panel and a liquid crystal light control panel; the display panel includes a plurality of display pixels, and the liquid crystal light control panel and the display panel are stacked, including a first substrate, a first electrode layer, a liquid crystal layer, a second electrode layer and a second substrate; the first electrode layer is arranged on the first substrate, the liquid crystal layer is arranged on a side of the first electrode layer away from the first substrate, the second electrode layer is arranged on a side of the liquid crystal layer away from the first substrate, and the second substrate is arranged on a side of the second electrode layer away from the first substrate, wherein the first electrode layer and the second electrode layer are configured to be able to be controlled to apply a first control signal and a second control signal to the liquid crystal layer, under the first control signal, the liquid crystal layer forms a first equivalent prism array, and under the second control signal, the liquid crystal layer forms a second equivalent prism array.

[0055] In the display device provided by the embodiment of the present disclosure, the liquid crystal light control panel can be equivalent to different prism arrays under different control signals, thereby achieving a naked-eye 3D display effect in combination with the display panel; for example, the display device can control the liquid crystal light control panel to be equivalent to a corresponding prism array according to the number of viewers, so as to achieve naked-eye 3D for a corresponding number of viewers; for example, the display device can also control the liquid crystal light control panel to be equivalent to a corresponding prism array according to the viewing direction and position of the viewer, so as to enhance the naked-eye 3D effect and improve the viewer experience.

[0056] The display device provided by the embodiments of the present disclosure will be described in detail below through several specific embodiments.

[0057] At least one embodiment of the present disclosure provides a display device, FIG1 shows a planar schematic diagram of the display device, FIG2 and FIG3 respectively show a cross-sectional schematic diagram of the display device along line AA in FIG1 and a cross-sectional schematic diagram of an equivalent prism array formed under different control signals, and FIG4 shows a cross-sectional schematic diagram of a liquid crystal light control panel 20 of the display device.

[0058] As shown in Figures 1-3, the display device includes a display panel 10 and a liquid crystal light control panel 20. For example, the display panel 10 can be an organic light-emitting display panel, a quantum dot light-emitting display panel, or a liquid crystal panel, among other forms of display panels. The embodiments of the present disclosure do not limit the specific form and corresponding structure of the display panel 10. The display panel 10 includes a plurality of display pixels DP for displaying images.

[0059] As shown in Figures 2-4, the liquid crystal light control panel 20 is stacked with the display panel 10 and includes a first substrate 201, a first electrode layer 202, a liquid crystal layer 203, a second electrode layer 204, and a second substrate 205. The first electrode layer 202 is disposed on the first substrate 201, the liquid crystal layer 203 is disposed on a side of the first electrode layer 202 away from the first substrate 201, the second electrode layer 204 is disposed on a side of the liquid crystal layer 203 away from the first substrate 201, and the second substrate 205 is disposed on a side of the second electrode layer 204 away from the first substrate 201.

[0060] The first electrode layer 202 and the second electrode layer 204 are configured to be capable of being controlled to apply a first control signal and a second control signal to the liquid crystal layer 203. As shown by arrow 1 in Figures 2 and 3, under the first control signal, the liquid crystal layer 203 forms a first equivalent prism array 21. As shown by arrow 2 in Figures 2 and 3, under the second control signal, the liquid crystal layer 203 forms a second equivalent prism array 22. The second equivalent prism array 22 is different from the first equivalent prism array 21.

[0061] For example, the first equivalent prism array 21 and the second equivalent prism array 22 can be applied to different scenarios, such as scenarios with different numbers of viewers, etc., which will be described in detail later.

[0062] For example, as shown in Figures 2 and 3, the first equivalent prism array 21 includes a plurality of first equivalent prisms 21A extending along a first direction R1 and arranged along a second direction R2. The spacing between the central axes O of two adjacent first equivalent prisms 21A in the plurality of first equivalent prisms 21A is a first spacing D1. The second equivalent prism array 22 includes a plurality of second equivalent prisms 22A extending along the first direction R1 and arranged along a second direction R2. The spacing between the central axes O of two adjacent second equivalent prisms 22A in the plurality of second equivalent prisms 22A is a second spacing D2. The first spacing D1 is different from the second spacing D2. The first direction is different from the second direction. For example, in some examples, the first direction is perpendicular to the second direction.

[0063] For example, in some embodiments, as shown in Figures 2 and 3, the second distance D2 is greater than the first distance D1. For example, as shown in Figure 3, a first light shielding portion 21B is provided between two adjacent first equivalent prisms 21A, and the width of the first light shielding portion 21B along the second direction R2 is a first width W1. A first light shielding portion 22B is provided between two adjacent second equivalent prisms 22A, and the width of the first light shielding portion 22B along the second direction R2 is a second width W2, and the second width W2 is greater than the first width W1.

[0064] For example, the embodiment of FIG. 2 shows a case where the first width W1 of the first light shielding portion 21B along the second direction R2 is equal to 0. At this time, two adjacent first equivalent prisms 21A are in contact, and a plurality of first equivalent prisms 21A are arranged continuously.

[0065] For example, as shown in Figures 2 and 3, the display device may further include an eye tracking device E and a control circuit 11. The eye tracking device E is configured to identify the position of a human eye, thereby obtaining information on the orientation of the human eye and the direction of the human eye arrangement; the control circuit 11 is electrically connected to the eye tracking device E and the liquid crystal light control panel 20, and is configured to control the first electrode layer 202 and the second electrode layer 204 to apply a first control signal when the eye tracking device E identifies that N pairs of human eyes are included in a viewing angle range of n degrees, referring to Figure 5, and to control the first electrode layer 202 and the second electrode layer 204 to apply a second control signal when the eye tracking device E identifies that M pairs of human eyes are included in a viewing angle range of m degrees, where M and N are positive integers, for example, M is greater than or equal to N, and m is greater than n.

[0066] For example, in the embodiments of the present disclosure, the eye tracking device E can be an eye recognition device based on an infrared device or an image acquisition device. The embodiments of the present disclosure do not limit the specific form of the eye tracking device E. For example, the control circuit 11 can be integrated into a chip or a circuit board and combined with one side of the display panel. The embodiments of the present disclosure do not limit the specific structure and configuration of the control circuit 11.

[0067] For example, FIG5 shows a schematic diagram of an equivalent prism array formed by the liquid crystal light control panel 20 under different conditions of the number of people. As shown in FIG5 , the smaller the number of people, the smaller the spacing D between the central axes of adjacent equivalent prisms in the equivalent prism array formed by the liquid crystal light control panel 20. For example, the spacing D between the central axes of adjacent equivalent prisms can be adjusted using the light shielding portion B. In this case, the structure of each equivalent prism is the same in different conditions. Alternatively, the spacing D between the central axes of adjacent equivalent prisms can be adjusted by controlling the width of the formed equivalent prism (i.e., the dimension along the second direction R2). In this case, the structure of each equivalent prism is different in different conditions.

[0068] For example, in the embodiment of FIG5 , the height of each equivalent prism is H, the surface refractive index of each equivalent prism is n, and the main lobe angle formed is a, then a=2*arcsin(n*sin(arctan(D / 2 / H))), and approximately a=n*arctan(D / 2 / h). It can be seen that by controlling the shading portion B between adjacent equivalent prisms, the distance D between the central axes of adjacent equivalent prisms can be adjusted, and then the main lobe angle a can be adjusted to meet the needs of different viewing scenes.

[0069] According to the above formula, if the width of the shading portion B is increased, a larger main lobe angle a can be obtained, and a larger prism aperture can be obtained, which is suitable for more people to watch at the same time. If the width of the shading portion B is reduced, a smaller main lobe angle a can be obtained, and a smaller prism aperture can be obtained, which is suitable for fewer people to watch at the same time.

[0070] For example, as shown in Figure 5, the spacing D is the smallest, the smaller the main lobe angle a, the smaller the prism aperture, which is suitable for situations with a small viewing angle range, such as a situation with a small number of viewers, as shown in the figure, there is one viewer, and the viewing angle range of the one person's eyes is small; the spacing D increases, the main lobe angle a increases, and the prism aperture increases, which is suitable for situations with a larger viewing angle range, such as a situation with a large number of viewers, as shown in the figure, there are two viewers, and the viewing angle range of the two people's eyes is increased; the spacing D further increases, the main lobe angle a further increases, and the prism aperture further increases, which is suitable for situations with an even larger viewing angle range, such as a situation with more viewers, as shown in the figure, there are three viewers, and the viewing angle range of the three people's eyes is further increased.

[0071] Therefore, the display device provided by the embodiment of the present disclosure can adjust the structure of the equivalent prism array formed by the liquid crystal light control panel 20 according to the number of viewers to adapt to different scenes, so as to achieve naked-eye 3D display effects in different scenes.

[0072] For example, in some embodiments, as shown in FIG4 , the first electrode layer 202 includes a plurality of first strip electrodes 202A extending along a first direction R1 and arranged along a second direction R2. Under a first control signal, the plurality of first strip electrodes 202A are controlled to apply a driving voltage that varies along the second direction R2 according to a first period to the liquid crystal layer 203, thereby forming a plurality of first equivalent prisms 21A. For example, the length of the first period is substantially the same as the spacing D between the central axes O of adjacent first equivalent prisms 21A in the formed first equivalent prism array, thereby forming a periodically arranged plurality of first equivalent prisms 21A. Under a second control signal, the plurality of first strip electrodes 202A are controlled to apply a driving voltage that varies along the second direction R2 according to a second period to the liquid crystal layer 203, thereby forming a plurality of second equivalent prisms 22A. For example, the length of the second period is substantially the same as the spacing D between the central axes O of adjacent second equivalent prisms 22A in the formed second equivalent prism array, thereby forming a periodically arranged plurality of second equivalent prisms 22A.

[0073] For example, the first period is different from the second period, so that the display device forms an equivalent prism array suitable for different scenes (such as different number of people) under different control signals.

[0074] For example, in the above embodiment, the second electrode layer 204 may include a plurality of second strip electrodes 204A extending along the first direction R1 and arranged along the second direction R2; alternatively, the second electrode layer 204 may include a plurality of second strip electrodes 204A extending along the second direction R2 and arranged along the first direction R1; alternatively, the second electrode layer 204 may be a planar electrode. In this case, under the first control signal and the second control signal, a common voltage, such as a ground voltage, such as 0V, is applied to the second electrode layer 204. In this case, the first electrode layer 202 is used to apply a driving voltage. That is, by adjusting the voltage applied by the first electrode layer 202, the voltage difference between the first electrode layer 202 and the second electrode layer 204 can be adjusted, thereby applying different driving voltages to the liquid crystal layer 203 to control the liquid crystals in the liquid crystal layer 203 to perform different deflections.

[0075] For example, in some embodiments, as shown in FIG6 , the liquid crystal light control panel 20 may further include a first polarizer P1, a first alignment layer 206, a second polarizer P2, and a second alignment layer 207. The first polarizer P1 is disposed on a side of the first substrate 201 away from the second substrate 205, the first alignment layer 206 is disposed on a side of the first electrode layer 202 close to the liquid crystal layer 203, the second polarizer P2 is disposed on a side of the second substrate 205 away from the first substrate 201, and the second alignment layer 207 is disposed on a side of the second electrode layer 204 close to the liquid crystal layer 203.

[0076] For example, the first alignment layer 206 and the second alignment layer 207 can be made of an organic insulating material such as polyimide. During the preparation process, the surfaces of the first alignment layer 206 and the second alignment layer 207 near the liquid crystal layer 203 are rubbed to form a certain orientation, thereby forming the alignment layers. The first polarizer P1 and the second polarizer P2 can also be various commercially available polarizers, and the embodiments of the present disclosure are not specifically limited to this.

[0077] For example, for the liquid crystal light control panel of Figure 6, the polarization direction of the first polarizer P1 and the second polarizer P2 and the orientation direction of the first alignment layer 206 and the second alignment layer 207 can be designed, combined with the control signals applied by the first electrode layer 202 and the second electrode layer 204, to achieve adjustment of the equivalent prism and the shading part.

[0078] For example, FIG7 shows the design of each polarizer and each alignment layer in an embodiment. As shown in FIG7, the angle between the transmission axis of the first polarizer P1 (indicated by the double arrow) and the first direction R1 is A, and FIG7 shows that A is 83°, and the angle between the alignment direction of the first alignment layer 206 and the transmission axis of the first polarizer P1 is 5 degrees to 15 degrees, and FIG7 shows that the angle between the alignment direction of the first alignment layer 206 and the first direction R1 is 93°, and the angle between the alignment direction of the first alignment layer 206 and the transmission axis of the first polarizer P1 is 93°. 7 shows that A is 83°; the angle between the alignment direction of the second alignment layer 207 and the transmission axis of the second polarizer P2 is 5 degrees to 15 degrees, and the angle between the alignment direction of the second alignment layer 207 and the first direction R1 is 93°; the angle between the alignment direction of the second alignment layer 207 and the transmission axis of the second polarizer P2 is 10°.

[0079] In the embodiment of FIG. 7 , under a first control signal, the plurality of first strip electrodes 202A corresponding to each of the plurality of first equivalent prisms 21A are controlled to apply a first driving voltage to the liquid crystal layer 203. Referring to FIG. 8 , the first driving voltage decreases in a direction from the edge T1 to the central axis O of the first equivalent prism 21A. For example, a voltage gradually varying from 5V to 0V is applied to the plurality of first strip electrodes 202A from the edge T1 to the central axis O, thereby forming a periodically deflected liquid crystal as shown in FIG. 8 . Similarly, under a second control signal, the plurality of first strip electrodes 202A corresponding to each of the plurality of second equivalent prisms 22A are controlled to apply a second driving voltage to the liquid crystal layer 203. The second driving voltage decreases in a direction from the edge T1 to the central axis O of the second equivalent prism 22A. For example, a voltage gradually varying from 6V to 0V is applied to the plurality of first strip electrodes 202A from the edge T1 to the central axis O, thereby forming a prism array having a different arrangement period from that of the first equivalent prisms 21A.

[0080] For example, in other embodiments, a light shielding portion may be formed between adjacent equivalent prisms to adjust the distance D between the central axes of the adjacent equivalent prisms. Corresponding to the formation of the equivalent prisms in the embodiment of FIG3 , under a first control signal, the plurality of first strip electrodes 202A corresponding to the first light shielding portion 21B are controlled to not have a driving voltage applied, i.e., no voltage difference is formed between the first electrode layer 202 and the second electrode layer 204. Under a second control signal, the plurality of first strip electrodes 202A corresponding to the first light shielding portion 22B are controlled to not have a driving voltage applied, thereby forming a light shielding portion, i.e., a portion that does not transmit light, in the corresponding portion of the liquid crystal light control panel 20. In this embodiment, when no voltage is applied to the first electrode layer 202 and the second electrode layer 204, the light shielding portion is in a normally black state, thereby sacrificing the light transmittance of the liquid crystal light control panel 20 to a certain extent. In this case, the backlight brightness of the display device can be increased to compensate for the loss of light transmittance.

[0081] For example, FIG9 shows the design of each polarizer and each alignment layer in another embodiment. As shown in FIG9, the angle between the transmission axis of the first polarizer P1 and the first direction is A, and FIG9 shows that the angle A is 83°. The angle between the alignment direction of the first alignment layer 206 and the transmission axis of the first polarizer P1 is 30 degrees to 60 degrees, and FIG9 shows that the angle between the alignment direction of the first alignment layer 206 and the first direction R1 is 38°. The angle between the alignment direction of the first alignment layer 206 and the transmission axis of the first polarizer P1 is 4°. 9 shows that the angle A is -7°, the angle between the alignment direction of the second alignment layer 207 and the transmission axis of the second polarizer P2 is 30 to 60 degrees, and FIG9 shows that the angle between the alignment direction of the second alignment layer 207 and the first direction R1 is 38°, and the angle between the alignment direction of the second alignment layer 207 and the transmission axis of the second polarizer P2 is 45°.

[0082] In the embodiment of FIG9 , under a first control signal, the plurality of first strip electrodes 202A corresponding to each of the plurality of first equivalent prisms 21A are controlled to apply a first driving voltage to the liquid crystal layer 203. Continuing with reference to FIG8 , the first driving voltage decreases in a direction from the edge T1 of the first equivalent prism 21A to the central axis O. For example, a voltage gradually varying from 5V to 0V is applied to the plurality of first strip electrodes 202A from the edge T1 to the central axis O, thereby forming the periodically deflected liquid crystal as shown in FIG8 . Under a second control signal, the plurality of first strip electrodes 202A corresponding to each of the plurality of second equivalent prisms 22A are controlled to apply a second driving voltage to the liquid crystal layer 203. The second driving voltage decreases in a direction from the edge T1 of the second equivalent prism 22A to the central axis O. For example, a voltage gradually varying from 6V to 0V is applied to the plurality of first strip electrodes 202A from the edge T1 to the central axis O, thereby forming a prism array having a different arrangement period from that of the first equivalent prisms 21A.

[0083] For example, in other embodiments, a light shielding portion may be formed between adjacent equivalent prisms to adjust the distance D between the central axes of the adjacent equivalent prisms. Corresponding to the formation of the equivalent prisms in the embodiment of FIG3 , under a first control signal, the plurality of first strip electrodes 202A corresponding to the first light shielding portion 21B are controlled to apply a third driving voltage, such as a high voltage of 5V or greater, to the liquid crystal layer 203, thereby forming a voltage difference of 5V or greater with the second electrode layer 204. Under a second control signal, the plurality of first strip electrodes 202A corresponding to the first light shielding portion 22B are controlled to apply a third driving voltage, such as a high voltage of 5V or greater, to the liquid crystal layer 203, thereby forming a voltage difference of 5V or greater with the second electrode layer 204, thereby forming a light shielding portion, i.e., a portion that does not transmit light, at the corresponding portion of the liquid crystal light control panel 20. In this embodiment, when no voltage is applied to the first electrode layer 202 and the second electrode layer 204, the portion where the light shielding portion is located is in a light-transmitting state, thereby substantially reducing the light transmittance of the liquid crystal light control panel 20.

[0084] For example, Figure 10 shows the design of each polarizer and alignment layer in yet another embodiment. As shown in Figure 10, the transmission axis of the first polarizer P1 forms an angle A with the first direction, which is shown in Figure 9 as 83°. The alignment direction of the first alignment layer 206 is parallel to the transmission axis of the first polarizer P1, that is, the angle between the alignment direction of the first alignment layer 206 and the first direction is also A, which is shown in Figure 9 as 83°. The transmission axis of the second polarizer P2 forms an angle A with the first direction, which is shown in Figure 9 as 83°. The alignment direction of the second alignment layer 207 is parallel to the transmission axis of the second polarizer P2, that is, the angle between the alignment direction of the second alignment layer 207 and the first direction is A, which is shown in Figure 9 as 83°.

[0085] In the embodiment of FIG10 , under a first control signal, the plurality of first strip electrodes 202A corresponding to each of the plurality of first equivalent prisms 21A are controlled to apply a first driving voltage to the liquid crystal layer 203. Continuing with reference to FIG8 , the first driving voltage decreases in a direction from the edge T1 to the central axis O of the first equivalent prism 21A. For example, a voltage gradually varying from 5V to 0V is applied to the plurality of first strip electrodes 202A from the edge T1 to the central axis O, thereby forming the periodically deflected liquid crystal as shown in FIG8 . Under a second control signal, the plurality of first strip electrodes 202A corresponding to each of the plurality of second equivalent prisms 22A are controlled to apply a second driving voltage to the liquid crystal layer 203. The second driving voltage decreases in a direction from the edge T1 to the central axis O of the second equivalent prism 22A. For example, a voltage gradually varying from 6V to 0V is applied to the plurality of first strip electrodes 202A from the edge T1 to the central axis O, thereby forming a prism array having a different arrangement period from that of the first equivalent prisms 21A.

[0086] For example, in other embodiments, a light shielding portion may be formed between adjacent equivalent prisms to adjust the distance D between the central axes of adjacent equivalent prisms. Corresponding to the formation of equivalent prisms in the embodiment of FIG3 , under a first control signal, at least two of the plurality of first strip electrodes 202A corresponding to the first light shielding portion 21B are controlled to apply a driving voltage difference greater than 5V, for example, greater than 6V, to the liquid crystal layer 203, thereby forming a higher transverse voltage, for example, causing the horizontal electric field intensity to be higher than the vertical electric field intensity. Under a second control signal, at least two of the plurality of first strip electrodes 202A corresponding to the first light shielding portion 22B are controlled to apply a driving voltage difference greater than 5V, for example, greater than 6V, to the liquid crystal layer 203, thereby forming a higher transverse voltage, for example, causing the horizontal electric field intensity to be higher than the vertical electric field intensity. Thus, a light shielding portion, i.e., a portion that does not transmit light, is formed at the corresponding portion of the liquid crystal light control panel 20. In this embodiment, when no voltage is applied to the first electrode layer 202 and the second electrode layer 204 , the light shielding portion is in a light-transmitting state, so the light transmittance of the liquid crystal light control panel 20 is hardly sacrificed.

[0087] For example, Figure 11 shows the design of each polarizer and alignment layer in yet another embodiment. As shown in Figure 11, the transmission axis of the first polarizer P1 forms an angle A with the first direction, which is 83° in Figure 11. The alignment direction of the first alignment layer 206 is parallel to the transmission axis of the first polarizer P1, which is 83° in Figure 11. The transmission axis of the second polarizer P2 forms an angle A+90 degrees with the first direction, which is -7 degrees in Figure 11. The alignment direction of the second alignment layer 207 is parallel to the transmission axis of the second polarizer P2, which is -7 degrees in Figure 11.

[0088] In the embodiment of FIG11 , under the first control signal, the plurality of first strip electrodes 202A corresponding to each of the plurality of first equivalent prisms 21A are controlled to apply a first driving voltage to the liquid crystal layer 203. The first driving voltage decreases along the direction from the edge of the first equivalent prism 21A to the central axis. Continuing with FIG8 , the first driving voltage decreases along the direction from the edge T1 of the first equivalent prism 21A to the central axis O. For example, the plurality of first strip electrodes 202A apply a voltage gradually changing from 5V to 0V in the direction from the edge T1 to the central axis O. 8 ; under the second control signal, the plurality of first strip electrodes 202A corresponding to each of the plurality of second equivalent prisms 22A are controlled to apply a second driving voltage to the liquid crystal layer 203, and the second driving voltage decreases along the direction from the edge to the central axis of the second equivalent prism 22A. For example, a voltage gradually changing from 6V to 0V is applied to the plurality of first strip electrodes 202A in the direction from the edge T1 to the central axis O, thereby forming a prism array with a different arrangement period from that of the first equivalent prism 21A.

[0089] For example, in other embodiments, a light shielding portion may be formed between adjacent equivalent prisms to adjust the distance D between the central axes of the adjacent equivalent prisms. Corresponding to the formation of the equivalent prisms in the embodiment of FIG3 , under a first control signal, the plurality of first strip electrodes 202A corresponding to the first light shielding portion 21B are controlled to apply a third driving voltage, e.g., a driving voltage greater than or equal to 5V, to the liquid crystal layer 203, thereby forming a voltage difference greater than or equal to 5V with the second electrode layer 204. Under a second control signal, the plurality of first strip electrodes 202A corresponding to the first light shielding portion 22B are controlled to apply a third driving voltage, e.g., a driving voltage greater than or equal to 5V, to the liquid crystal layer 203, thereby forming a voltage difference greater than or equal to 5V with the second electrode layer 204, thereby forming a light shielding portion, i.e., a portion that does not transmit light, at the corresponding portion of the liquid crystal light control panel 20. In this embodiment, when no voltage is applied to the first electrode layer 202 and the second electrode layer 204, the portion where the light shielding portion is located is in a light-transmitting state, thereby substantially reducing the light transmittance of the liquid crystal light control panel 20.

[0090] As can be seen, in each of the above embodiments, the liquid crystal light control panel 20 can achieve different equivalent prism arrays through different control signals to suit different scenarios. In addition, in each of the above embodiments, the angle A can also be selected to other values. The above are only examples, and the embodiments of the present disclosure do not limit the value of the angle A.

[0091] For example, in other embodiments, the first electrode layer 202 may have a different structural design. For example, Figures 12A and 12B illustrate a structure of the first electrode layer. As shown in Figures 12A and 12B, the first electrode layer 202 includes a plurality of first strip electrodes 202A extending along a first direction R1 and arranged along a second direction R2. The plurality of first strip electrodes 202A are arranged along the second direction R2 in a third periodic arrangement. Within the third period P, along the second direction R2, the width of the plurality of first strip electrodes 202A (i.e., the dimension along the second direction R2) gradually increases and then gradually decreases. For example, within the third period P, the plurality of first strip electrodes 202A are symmetrically arranged.

[0092] For example, in the embodiments of Figures 12A and 12B, the first electrode layer 202 and the second electrode layer 204 can apply a voltage to the liquid crystal layer 203 based on the third period P to form an equivalent prism and an equivalent shading portion according to the third period P, thereby making the morphology of the formed equivalent prism more accurate.

[0093] For example, as shown in Figures 12A and 12B, in each third period P, the portion of the first strip electrode 202A with a larger width is used to drive the liquid crystal layer 203 to form the center portion of the prism, and the portion of the first strip electrode 202A with a smaller width is used to drive the liquid crystal layer 203 to form the edge portion of the prism.

[0094] Because the liquid crystal light control panel 20 forms an equivalent prism array by applying voltage, the prism structure is fixed by different phase delays. The delay is greatest at the center of the prism, and smallest at the edges. Furthermore, the rate of change of the phase delay varies with position, with the rate of change being faster at the edges and slower at the center. Accordingly, the drive signal applied by the first strip electrodes 202A also changes at different rates at the prism edges and the prism center. Therefore, the drive voltage applied at the prism edges changes more dramatically, while the drive voltage applied at the prism center changes more gradually. Excessive voltage differences between adjacent first strip electrodes 202A can easily lead to uneven local electric field distribution, disrupting the alignment of the liquid crystal molecules. In the disclosed embodiments, the aforementioned undesirable phenomenon can be avoided by gradually narrowing the width of the first strip electrodes 202A from the prism center to the prism edges.

[0095] For example, in other embodiments, the first electrode layer 202 may have different driving modes to form different types of equivalent prisms.

[0096] For example, Figure 13 shows a schematic diagram of the structure of an equivalent prism. As shown in Figure 13, the first electrode layer 202 includes a plurality of first strip electrodes 202A extending along a first direction R1 and arranged along a second direction R2. The plurality of first strip electrodes 202A are configured to controllably provide a fourth driving voltage to the liquid crystal layer 203, for example, a voltage that varies periodically according to the morphology of the Fresnel lens, thereby forming a plurality of Fresnel lenses arranged along the second direction R2 (one Fresnel lens is shown as an example). Each Fresnel lens includes a main lens portion LE and transition portions LE1 located on either side of the main lens portion LE. Driven by the fourth driving voltage, the liquid crystal layer 203 forms dark regions C, or opaque regions, in the transition portions LE1, thereby forming the liquid crystal light control panel 20 equivalent to a Fresnel lens. For example, the number of first strip electrodes 202A corresponding to each dark region C can be 1 to 3. The Fresnel lens can be thinner to meet user demands for thinner display devices.

[0097] For example, as shown in FIG13 , a light shielding portion B may be formed between adjacent Fresnel lenses to adjust the distance between the central axes of adjacent Fresnel lenses to suit different application scenarios.

[0098] For example, in the above embodiment, the shading portion B formed by the liquid crystal light-transmitting panel 20 will reduce the light transmittance of the liquid crystal light-transmitting panel 20. In this regard, the liquid crystal layer 203 can be regionalized, so that the switching of the main lobe angle of the equivalent prism size can be achieved without forming a shading portion for use in different scenarios. At this time, the display brightness of the display device is improved.

[0099] For example, Figures 14 and 15 show a schematic structural diagram of another liquid crystal light control panel provided by at least one embodiment of the present disclosure. As shown in Figures 14 and 15, the liquid crystal layer 203 includes a plurality of liquid crystal setting areas 2031 extending along the first direction R1 and arranged along the second direction R2. Adjacent liquid crystal setting areas 2031 are separated by support columns PS. Under the first control signal, as shown in Figure 14, each liquid crystal setting area 2031 corresponds to forming a first equivalent prism 21A. At this time, the plurality of first strip electrodes 202A corresponding to each liquid crystal setting area 2031 apply a driving voltage that periodically varies according to the width of the liquid crystal setting area 2031 (the size along the second direction R2). As a result, the main lobe angle formed is larger and the prism aperture is larger, which is suitable for scenes where multiple people watch. Under the second control signal, as shown in Figure 15, each of the multiple liquid crystal setting areas forms a plurality of second equivalent prisms 22A. At this time, the driving voltage applied to the multiple first strip electrodes 202A corresponding to each liquid crystal setting area 2031 can be designed according to the number of second equivalent prisms 22A. For example, in the embodiment of Figure 15, a periodically changing driving voltage is applied with 1 / 3 of the width of the liquid crystal setting area 2031 (the dimension along the second direction R2) as a period. As a result, the main lobe angle formed is smaller and the prism aperture is smaller, which is suitable for scenes watched by a small number of people (such as a single person).

[0100] For example, in some embodiments, the support pillars PS are integrally provided with the first substrate 201 or the second substrate 205. That is, during the manufacturing process of the liquid crystal light control panel 20, the support pillars PS are integrally formed with the first substrate 201 or the second substrate 205 to simplify the manufacturing process of the liquid crystal light control panel 20. Alternatively, in other embodiments, the support pillars PS can be independently provided, that is, as an additional structure manufactured on the first substrate 201 or the second substrate 205.

[0101] For example, in some embodiments, the first substrate 201 and the second substrate 205 may be silicon substrates or glass substrates, etc. When support pillars PS are additionally provided, the support pillars PS may be made of silicon, silicon oxide, silicon nitride, or silicon oxynitride.

[0102] For example, in some embodiments, different structural designs may be performed on the first electrode layer 202 to improve the manufacturing yield of the first electrode layer 202 .

[0103] For example, Figures 16-19 illustrate various structures of the first electrode layer. As shown in Figures 16-19, the first electrode layer 202 includes a plurality of electrode sublayers 2021 / 2022 / 2023 / 2024 stacked together. Each of the plurality of electrode sublayers 2021 / 2022 / 2023 / 2024 includes a plurality of sub-electrodes 2021A / 2022A / 2023A / 2024A extending along a first direction R1 and arranged along a second direction R2. The orthographic projections of the sub-electrodes in two adjacent electrode sublayers on the first substrate 201 at least partially overlap. In this case, compared to the previous embodiments, the width of each sub-electrode (i.e., the dimension along the second direction R2) can be larger to avoid electrode breakage during the preparation process due to an electrode width that is too small, thereby improving the preparation yield of the first electrode layer 202.

[0104] For example, the width of the surface of the multiple sub-electrodes 2021A / 2022A / 2023A / 2024A of the multiple electrode sub-layers 2021 / 2022 / 2023 / 2024 facing the liquid crystal layer 203 and not blocked by other sub-electrodes along the second direction R2 is greater than 0, that is, each sub-electrode 2021A / 2022A / 2023A / 2024A has a portion directly facing the liquid crystal layer 203 to drive the liquid crystal, which is reflected in Figures 16-19 as the width of regions 1 to 9 is greater than 0.

[0105] For example, the widths of the multiple sub-electrodes in the multiple electrode sub-layers may be different. For example, adjacent electrode sub-layers in the multiple electrode sub-layers and adjacent sub-electrodes in the same layer may be separated by an insulating layer. The insulating layer may be made of an organic insulating material (such as polyimide) or an inorganic insulating material (such as silicon oxide, silicon nitride, silicon oxynitride, etc.). The embodiments of the present disclosure do not limit the specific form of the insulating layer.

[0106] For example, as shown in Figures 16-19 , the widths of the surfaces of the multiple sub-electrodes 2021A / 2022A / 2023A / 2024A of the multiple electrode sub-layers 2021 / 2022 / 2023 / 2024 facing the liquid crystal layer 203 and not blocked by other sub-electrodes along the second direction R2 are substantially the same. That is, the widths of the surfaces of each sub-electrode 2021A / 2022A / 2023A / 2024A facing the liquid crystal layer 203 and not blocked by other sub-electrodes along the second direction R2 are substantially the same. This is reflected in Figures 16-19 as regions 1-9 having substantially the same widths. Consequently, the portions of each sub-electrode 2021A / 2022A / 2023A / 2024A that effectively drive the liquid crystal layer 203 have substantially the same widths along the second direction R2. This allows for fine-tuning and improves the manufacturing yield of the first electrode layer 202.

[0107] For example, in some embodiments, the width of regions 1 to 9 may correspond to the width of a display pixel DP in the display panel 10 or the width of a display sub-pixel in the display pixel DP, so that the liquid crystal light control panel 20 can better fine-tune the light emitted by the display panel 10 to achieve a 3D display effect.

[0108] For example, in the embodiments of Figures 16 and 17 , the multiple electrode sublayers include a first electrode sublayer 2021 and a second electrode sublayer 2022, each stacked. The first electrode sublayer 2021 includes a plurality of first sub-electrodes 2021A extending along a first direction R1 and arranged along a second direction R2, with first gaps 2021B between adjacent first sub-electrodes 2021A. The second electrode sublayer 2022 includes a plurality of second sub-electrodes 2022A extending along the first direction R1 and arranged along the second direction R2, with second gaps 2022B between adjacent second sub-electrodes 2022A. The orthographic projection of the first gap 2021B on the first substrate 201 is located within a second sub-electrode 2022A, and the orthographic projection of the second gap 2022B on the first substrate 201 is located within a first sub-electrode 2021A. This ensures that each liquid crystal in the liquid crystal layer 203 has a corresponding sub-electrode for driving.

[0109] For example, in the embodiment of FIG17 , the plurality of electrode sublayers include a first electrode sublayer 2021 and a second electrode sublayer 2022, the first electrode sublayer 2021 including a plurality of first sub-electrodes 2021A extending along a first direction R1 and arranged along a second direction R2, and the second electrode sublayer 2022 including a plurality of second sub-electrodes 2022A extending along the first direction R1 and arranged along the second direction R2. The plurality of first sub-electrodes 2021A and the plurality of second sub-electrodes 2022A are stacked in a stepped manner. For example, the first sub-electrodes 2021A and the second sub-electrodes 2022A may have substantially the same structure, i.e., the first sub-electrodes 2021A and the second sub-electrodes 2022A may have substantially the same width along the second direction R2, and the first gaps 2021B and the second gaps 2022B may also have substantially the same width along the second direction R2. However, the first electrode sublayer 2021 is displaced (translated) relative to the second electrode sublayer 2022.

[0110] For example, the first sub-electrode 2021A is translated relative to the second sub-electrode 2022A by 0.5 micrometers to 4 micrometers, such as 1.0 micrometer, 1.5 micrometers, 2.0 micrometers, 3.0 micrometers, or 3.5 micrometers.

[0111] For example, in other embodiments, the widths of the first sub-electrode 2021A and the second sub-electrode 2022A along the second direction R2 may also be different, but the first electrode sublayer 2021 is still staggered relative to the second electrode sublayer 2022, so that multiple first sub-electrodes 2021A and multiple second sub-electrodes 2022A are stacked in a stepped manner.

[0112] For example, in the embodiments of Figures 18 and 19, the multiple electrode sublayers include a stacked first electrode sublayer 2021, a second electrode sublayer 2022, a third electrode sublayer 2023, and a fourth electrode sublayer 2024. The first electrode sublayer 2021 includes a plurality of first sub-electrodes 2021A extending along a first direction R1 and arranged along a second direction R2. The second electrode sublayer 2022 includes a plurality of second sub-electrodes 2022A extending along the first direction R1 and arranged along the second direction R2. The third electrode sublayer 2023 includes a plurality of third sub-electrodes 2023A extending along the first direction R1 and arranged along the second direction R2. The fourth electrode sublayer 2024 includes a plurality of fourth sub-electrodes 2024A extending along the first direction R1 and arranged along the second direction R2. The plurality of first sub-electrodes 2021A, the plurality of second sub-electrodes 2022A, the plurality of third sub-electrodes 2023A, and the plurality of fourth sub-electrodes 2024A are stacked in a stepped manner.

[0113] For example, in the embodiment of Figure 18, the structures of at least part of the first electrode sublayer 2021, the second electrode sublayer 2022, the third electrode sublayer 2022 and the fourth electrode sublayer 2024 can be basically the same, that is, the widths of at least part of the first sub-electrode 2021A, the second sub-electrode 2022A, the third sub-electrode 2023A and the fourth sub-electrode 2024A along the second direction R2 can be basically the same, and the widths of at least part of the first interval 2021B, the second interval 2022B, the interval between adjacent third sub-electrodes 2023A and the interval between adjacent fourth sub-electrodes 2024A along the second direction R2 are also basically the same. At this time, the first electrode sublayer 2021, the second electrode sublayer 2022, the third electrode sublayer 2022 and the fourth electrode sublayer 2024 are staggered (translated) in sequence.

[0114] For example, the sub-electrodes in adjacent electrode sub-layers are relatively shifted by 0.5 micrometers to 4 micrometers, such as 1.0 micrometers, 1.5 micrometers, 2.0 micrometers, 3.0 micrometers or 3.5 micrometers.

[0115] For example, in the embodiment of Figure 18, the structures of the first electrode sublayer 2021, the second electrode sublayer 2022 and the third electrode sublayer 2022 are basically the same, but are staggered (translated) in sequence; the width of the fourth sub-electrode 2024A in the fourth electrode sublayer 2024 is relatively short, and one edge of the fourth sub-electrode 2024A is flush with an edge of the third electrode sublayer 2022.

[0116] 19 , the structures of the first electrode sublayer 2021, the second electrode sublayer 2022, the third electrode sublayer 2023, and the fourth electrode sublayer 2024 are different. For example, the electrode sublayer closer to the liquid crystal layer 203 has a smaller width along the second direction R2.

[0117] For example, in adjacent electrode sublayers, the width of the sub-electrode closer to the liquid crystal layer 203 is reduced by 0.5 microns to 4 microns relative to the width of the sub-electrode farther away from the liquid crystal layer 203, for example, 1.0 micron, 1.5 microns, 2.0 microns, 3.0 microns or 3.5 microns.

[0118] For example, in the various first electrode layers 202 described above, the sub-electrodes in the sub-electrode layers are periodically distributed as a whole, and each period can serve as an electrode group for driving the liquid crystal in the corresponding liquid crystal layer 203. During the driving process, the driving signal applied by the first electrode layer 202 can be based on one electrode group or multiple electrode groups as a period, so as to realize a periodically arranged equivalent prism.

[0119] For example, in some embodiments, the material of the first electrode layer 202 and the second electrode layer 204 can be transparent metal oxide, such as indium tin oxide (ITO), indium zinc oxide (IZO), gallium zinc oxide (GZO), etc. The materials of the first electrode layer 202 and the second electrode layer 204 can be the same or different, and the embodiments of the present disclosure do not specifically limit this.

[0120] For example, in other embodiments, the arrangement directions of the equivalent prisms formed by the liquid crystal light control panel 20 may be different, thereby enabling naked-eye 3D display when the display device is arranged in different directions.

[0121] For example, as shown in Figure 20, under the first control signal, the first equivalent prism array 21 formed includes a plurality of first equivalent prisms 21A extending along the first direction R1 and arranged along the second direction R2. As shown in Figure 21, the second equivalent prism array 22 includes a plurality of second equivalent prisms 22A extending along the second direction R2 and arranged along the first direction R1.

[0122] Thus, as shown in FIG22 , when the eye tracking device E identifies that the line connecting a single eye and a double eye is along the second direction R2, and the display device is positioned vertically relative to the eye, the control circuit 11 can control the first electrode layer 202 and the second electrode layer 204 to apply a first control signal, which, in conjunction with the display pixel information of the display panel, displays 3D content for the left and right eyes, thereby achieving naked-eye 3D display. For example, when the viewer moves horizontally, by adjusting the first control signal, such as by shifting the drive signal of the first electrode layer 202, the formed equivalent prism array undergoes appropriate horizontal shift, thereby maintaining the image viewed by the left and right eyes unchanged.

[0123] As shown in FIG23 , when the eye tracking device E identifies that the line connecting a single eye and a double eye is along a first direction R1, and the display device is positioned horizontally relative to the eye, the control circuit 11 can control the first electrode layer 202 and the second electrode layer 204 to apply a second control signal, which, in conjunction with the display pixel information of the display panel, displays 3D content for both eyes, thus achieving naked-eye 3D display. Similarly, when the viewer moves horizontally, by adjusting the second control signal, for example, by shifting the drive signal of the first electrode layer 202, the resulting equivalent prism array undergoes appropriate horizontal shift, thereby maintaining the image seen by the left and right eyes.

[0124] It can be seen that no matter whether the display device is arranged along the first direction R1 or the second direction R2, or no matter whether the display device is placed horizontally or vertically relative to the human eye, naked-eye 3D display can be achieved.

[0125] For example, in some embodiments, as shown in FIG24 , each display pixel DP includes a plurality of display sub-pixels SP1 / SP2 / SP3, and the plurality of display sub-pixels SP1 / SP2 / SP3 are arranged in an array along a first direction R1 and a second direction R2. An edge F1 of a light-emitting region F of each of the plurality of display sub-pixels SP1 / SP2 / SP3 is a straight line, and the straight line is parallel to the first direction R1 or the second direction R2. For example, each light-emitting region F is a quadrilateral, such as a parallelogram, a rectangle, or a square, and two adjacent edges F1 of the quadrilateral are respectively along the first direction R1 and the second direction R2.

[0126] For example, as shown in FIG24 , each display sub-pixel SP1 / SP2 / SP3 has a size L1 along the first direction R1 and a size L2 along the second direction R2. As shown in FIG20 and FIG21 , each first equivalent prism 21A has a width L3 along the second direction R2, and each second equivalent prism 22A has a length L4 along the first direction R1. Thus, L4 / L1 = L3 / L2. This results in a more precise matching of the equivalent prisms with the display sub-pixels SP1 / SP2 / SP3, resulting in a better 3D display effect.

[0127] For example, in some embodiments, each display pixel DP in the display panel 10 has the same size along the first direction R1 and the second direction R2. The first electrode layer 202 includes a plurality of first strip electrodes 202A extending along the first direction R1 and arranged along the second direction R2, and the second electrode layer 204 includes a plurality of second strip electrodes 204B extending along the second direction R2 and arranged along the first direction R1. Under a first control signal, a driving voltage is applied to the first electrode layer 202 and a common voltage is applied to the second electrode layer 204, thereby forming a plurality of first equivalent prisms 21A extending along the first direction R1 and arranged along the second direction R2, thereby achieving the situations shown in Figures 20 and 22. Under a second control signal, a driving voltage is applied to the second electrode layer 204 and a common voltage is applied to the first electrode layer 202, thereby forming a plurality of second equivalent prisms 22A extending along the second direction R2 and arranged along the first direction R1, thereby achieving the situations shown in Figures 21 and 23.

[0128] For example, in some embodiments, as shown in FIG24 , each display pixel DP includes multiple display sub-pixels, and the multiple display sub-pixels have the same overall size along the first direction R1 and the second direction R2. Therefore, referring to FIG21 and FIG22 , when the placement orientation of the display device changes, since the overall size of each display pixel DP along the first direction R1 and the second direction R2 is the same, the display effect viewed by the viewer remains substantially the same regardless of whether the display device is placed horizontally or vertically, thereby improving the viewer's experience.

[0129] For example, in some examples, each display sub-pixel has the same size along the first direction R1 and the second direction R2, and the multiple display sub-pixels of each display pixel DP can form a Y×Y array (Y is a positive integer and greater than 1) so that each display pixel DP has the same size along the first direction R1 and the second direction R2.

[0130] For example, in some examples, as shown in FIG. 24 , the plurality of display pixels DP include a first color pixel S1 , a second color pixel S2 , and a third color pixel S3 , which are configured to emit light of different colors.

[0131] For example, in the embodiment shown in FIG24 , a first color pixel S1 includes four first color sub-pixels SP1 arranged in a 2×2 array. Each first color sub-pixel SP1 has the same size along the first direction R1 and the second direction R2, thereby ensuring that the first color pixel S1 as a whole has the same size along the first direction R1 and the second direction R2. A second color pixel S2 includes four second color sub-pixels SP2 arranged in a 2×2 array. Each second color sub-pixel SP2 has the same size along the first direction R1 and the second direction R2, thereby ensuring that the second color pixel S2 as a whole has the same size along the first direction R1 and the second direction R2. A third color pixel S3 includes four third color sub-pixels SP3 arranged in a 2×2 array. Each third color sub-pixel SP3 has the same size along the first direction R1 and the second direction R2, thereby ensuring that the third color pixel S3 as a whole has the same size along the first direction R1 and the second direction R2.

[0132] For example, in some embodiments, the first color pixel S1 , the second color pixel S2 , and the third color pixel S3 are red, green, and blue pixels, respectively, thereby achieving full-color display.

[0133] For example, in other embodiments, the size of each display sub-pixel along the first direction R1 and the second direction R2 may also be the same. In this case, the number of display sub-pixels arranged along the first direction R1 and the second direction R2 in each display pixel DP may be different, so that the size of each display pixel DP along the first direction R1 and the second direction R2 is the same.

[0134] It should be noted that the sizes of the display pixels DP and the display sub-pixels mentioned above refer to the sizes of the spaces occupied by the display pixels DP and the display sub-pixels on the display panel in different directions.

[0135] For example, when implementing 3D display, multiple display pixels DP can be divided into left-eye pixels and right-eye pixels, and an equivalent prism array formed by the liquid crystal light control panel 20 can be used to adjust the light emitted by the left-eye pixels and the right-eye pixels. The light emitted by the left-eye pixels and the right-eye pixels can enter the left eye and the right eye respectively, thereby allowing the viewer to achieve naked-eye 3D display.

[0136] In summary, in the display device provided in the embodiments of the present disclosure, the liquid crystal light control panel 20 can be equivalent to different prism arrays under different control signals, thereby controlling the liquid crystal light control panel 20 to be equivalent to the corresponding prism array according to the number of viewers and the direction and position of the viewers' viewing, so as to be used in different scenes, and automatically switch between different scenes to enhance the viewer experience.

[0137] There are a few points to note:

[0138] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0139] (2) For the sake of clarity, the thickness of layers or regions in the drawings used to describe the embodiments of the present disclosure are exaggerated or reduced, i.e., these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or intervening elements may be present.

[0140] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0141] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display device, comprising: A display panel including a plurality of display pixels, and A liquid crystal light control panel, stacked with the display panel, comprises: a first substrate, A first electrode layer is disposed on the first substrate, a liquid crystal layer, disposed on a side of the first electrode layer away from the first substrate, a second electrode layer, disposed on a side of the liquid crystal layer away from the first substrate, and a second substrate, disposed on a side of the second electrode layer away from the first substrate; The first electrode layer and the second electrode layer are configured to be controllable to apply a first control signal and a second control signal to the liquid crystal layer. Under the first control signal, the liquid crystal layer forms a first equivalent prism array, and under the second control signal, the liquid crystal layer forms a second equivalent prism array.

2. The display device according to claim 1, wherein: The first equivalent prism array includes a plurality of first equivalent prisms extending along a first direction and arranged along a second direction, wherein the distance between the central axes of two adjacent first equivalent prisms in the plurality of first equivalent prisms is a first distance D1, The second equivalent prism array includes a plurality of second equivalent prisms extending along the first direction and arranged along the second direction, and a distance between central axes of two adjacent second equivalent prisms among the plurality of second equivalent prisms is a second distance D2.

3. The display device according to claim 2, wherein: The second distance D2 is greater than the first distance D1, A first light shielding portion is provided between the two adjacent first equivalent prisms, and a width of the first light shielding portion along the second direction is a first width W1; a second light shielding portion is provided between the two adjacent second equivalent prisms, and a width of the second light shielding portion along the second direction is a second width W2; The second width W2 is greater than the first width W1.

4. The display device according to claim 3, further comprising: an eye tracking device configured to identify the position of a person's eyes, and The control circuit is electrically connected to the eye tracking device and the liquid crystal light control panel, and is configured to control the first electrode layer and the second electrode layer to apply a first control signal when the eye tracking device recognizes that N pairs of human eyes are included in a viewing angle range of n degrees, and when the eye tracking device recognizes that M pairs of human eyes are included in a viewing angle range of m degrees, controlling the first electrode layer and the second electrode layer to apply a second control signal, M and N are positive integers, and m is greater than n.

5. The display device according to any one of claims 2 to 4, wherein: The first electrode layer includes a plurality of first strip electrodes extending along the first direction and arranged along the second direction, Under the first control signal, the plurality of first strip electrodes are controlled to apply a driving voltage that changes along the second direction according to a first period to the liquid crystal layer, so as to form the plurality of first equivalent prisms; Under the second control signal, the plurality of first strip electrodes are controlled to apply a driving voltage that varies along the second direction with a second period to the liquid crystal layer, so as to form the plurality of second equivalent prisms.

6. The display device according to claim 5, wherein: The second electrode layer includes a plurality of second strip electrodes extending along the first direction and arranged along the second direction, or The second electrode layer includes a plurality of second strip electrodes extending along the second direction and arranged along the first direction, or The second electrode layer is a surface electrode, Under the first control signal and the second control signal, a common voltage is applied to the second electrode layer.

7. The display device according to any one of claims 1 to 6, wherein: The liquid crystal light control panel also includes: A first polarizer is disposed on a side of the first substrate away from the second substrate. A first alignment layer is arranged on a side of the first electrode layer close to the liquid crystal layer, a second polarizer, disposed on a side of the second substrate away from the first substrate, and The second alignment layer is arranged on a side of the second electrode layer close to the liquid crystal layer.

8. The display device according to claim 7, wherein: The angle between the transmission axis of the first polarizer and the first direction is A, the angle between the alignment direction of the first alignment layer and the transmission axis of the first polarizer is 5 degrees to 15 degrees, the angle between the transmission axis of the second polarizer and the first direction is A, and the angle between the alignment direction of the second alignment layer and the transmission axis of the second polarizer is 5 degrees to 15 degrees; Under the first control signal, a plurality of first strip electrodes corresponding to each of the plurality of first equivalent prisms are controlled to apply a first driving voltage to the liquid crystal layer, and the first driving voltage shows a decreasing trend along the direction from the edge to the central axis of the first equivalent prism; Under the second control signal, the plurality of first strip electrodes corresponding to each of the plurality of second equivalent prisms are controlled to apply a second driving voltage to the liquid crystal layer, and the second driving voltage tends to decrease in the direction from the edge to the central axis of the second equivalent prism.

9. The display device according to claim 8, wherein: Under the first control signal, the plurality of first strip electrodes corresponding to the first light shielding portion are controlled not to be applied with a driving voltage. Under the second control signal, the plurality of first strip electrodes corresponding to the second light shielding portion are controlled not to be applied with a driving voltage.

10. The display device according to claim 7, wherein: The angle between the transmission axis of the first polarizer and the first direction is A, the angle between the alignment direction of the first alignment layer and the transmission axis of the first polarizer is 30 degrees to 60 degrees, the angle between the transmission axis of the second polarizer and the first direction is A, and the angle between the alignment direction of the second alignment layer and the transmission axis of the second polarizer is 30 degrees to 60 degrees; Under the first control signal, a plurality of first strip electrodes corresponding to each of the plurality of first equivalent prisms are controlled to apply a first driving voltage to the liquid crystal layer, and the first driving voltage shows a decreasing trend along the direction from the edge to the central axis of the first equivalent prism; Under the second control signal, the plurality of first strip electrodes corresponding to each of the plurality of second equivalent prisms are controlled to apply a second driving voltage to the liquid crystal layer, and the second driving voltage tends to decrease in the direction from the edge to the central axis of the second equivalent prism.

11. The display device according to claim 10, wherein: Under the first control signal, the plurality of first strip electrodes corresponding to the first light shielding portion are controlled to apply a third driving voltage to the liquid crystal layer. Under the second control signal, the plurality of first strip electrodes corresponding to the second light shielding portion are controlled to apply a third driving voltage to the liquid crystal layer.

12. The display device according to claim 7, wherein: The angle between the transmission axis of the first polarizer and the first direction is A, the alignment direction of the first alignment layer is parallel to the transmission axis of the first polarizer, the angle between the transmission axis of the second polarizer and the first direction is A, and the alignment direction of the second alignment layer is parallel to the transmission axis of the second polarizer; Under the first control signal, a plurality of first strip electrodes corresponding to each of the plurality of first equivalent prisms are controlled to apply a first driving voltage to the liquid crystal layer, and the first driving voltage shows a decreasing trend along the direction from the edge to the central axis of the first equivalent prism; Under the second control signal, each of the plurality of second equivalent prisms is correspondingly set A plurality of first strip electrodes are controlled to apply a second driving voltage to the liquid crystal layer, and the second driving voltage shows a decreasing trend in a direction from an edge to a central axis of the second equivalent prism.

13. The display device according to claim 2, wherein: Under the first control signal, at least two of the plurality of first strip electrodes corresponding to the first light shielding portion are controlled to apply a driving voltage difference greater than 5V to the liquid crystal layer. Under the second control signal, at least two of the plurality of first strip electrodes corresponding to the second light shielding portion are controlled to apply a driving voltage difference greater than 5V to the liquid crystal layer.

14. The display device according to claim 7, wherein: The angle between the transmission axis of the first polarizer and the first direction is A, the alignment direction of the first alignment layer is parallel to the transmission axis of the first polarizer, the angle between the transmission axis of the second polarizer and the first direction is A+90 degrees, and the alignment direction of the second alignment layer is parallel to the transmission axis of the second polarizer; Under the first control signal, a plurality of first strip electrodes corresponding to each of the plurality of first equivalent prisms are controlled to apply a first driving voltage to the liquid crystal layer, and the first driving voltage shows a decreasing trend along the direction from the edge to the central axis of the first equivalent prism; Under the second control signal, the plurality of first strip electrodes corresponding to each of the plurality of second equivalent prisms are controlled to apply a second driving voltage to the liquid crystal layer, and the second driving voltage tends to decrease in the direction from the edge to the central axis of the second equivalent prism.

15. The display device according to claim 14, wherein: Under the first control signal, the plurality of first strip electrodes corresponding to the first light shielding portion are controlled to apply a third driving voltage to the liquid crystal layer. Under the second control signal, the plurality of first strip electrodes corresponding to the second light shielding portion are controlled to apply a third driving voltage to the liquid crystal layer.

16. The display device according to any one of claims 2 to 4, wherein: The first electrode layer includes a plurality of first strip electrodes extending along the first direction and arranged along the second direction, and the plurality of first strip electrodes are arranged along the second direction according to a third period. In the third period, along the second direction, the widths of the plurality of first strip electrodes gradually increase and then gradually decrease.

17. The display device according to any one of claims 2 to 4, wherein: The first electrode layer includes a plurality of first strip electrodes extending along the first direction and arranged along the second direction, The plurality of first strip electrodes are configured to be controlled to provide a fourth driving voltage to the liquid crystal layer to form a plurality of Fresnel lenses arranged along the second direction, Each of the plurality of Fresnel lenses includes a main lens portion and transition portions located at both sides of the main lens portion, and the liquid crystal layer forms a dark area in the transition portion when driven by the fourth driving voltage.

18. The display device according to any one of claims 2 to 4, wherein: The liquid crystal layer includes a plurality of liquid crystal arrangement regions extending along the first direction and arranged along the second direction, wherein adjacent liquid crystal arrangement regions among the plurality of liquid crystal arrangement regions are separated by support columns, Under the first control signal, each of the plurality of liquid crystal setting areas forms a first equivalent prism. Under the second control signal, each of the plurality of liquid crystal arrangement areas forms a plurality of second equivalent prisms.

19. The display device according to claim 18, wherein: The supporting column is integrally provided with the first substrate or the second substrate.

20. The display device according to any one of claims 2 to 4, wherein: The first electrode layer includes a plurality of electrode sub-layers stacked together, each of the plurality of electrode sub-layers includes a plurality of sub-electrodes extending along the first direction and arranged along the second direction, The orthographic projections of the sub-electrodes in two adjacent electrode sub-layers on the first substrate at least partially overlap, The width of the surfaces of the multiple sub-electrodes of the multiple electrode sub-layers facing the liquid crystal layer and not blocked by other sub-electrodes along the second direction is greater than 0.

21. The display device according to claim 20, wherein: The widths of the surfaces of the multiple sub-electrodes of the multiple electrode sub-layers facing the liquid crystal layer and not blocked by other sub-electrodes along the second direction are substantially the same.

22. The display device according to claim 20 or 21, wherein: The plurality of electrode sublayers include a first electrode sublayer and a second electrode sublayer which are stacked. The first electrode sublayer includes a plurality of first sub-electrodes extending along the first direction and arranged along the second direction, The second electrode sublayer includes a plurality of second sub-electrodes extending along the first direction and arranged along the second direction, The plurality of first sub-electrodes and the plurality of second sub-electrodes are stacked in a step-like manner.

23. The display device according to any one of claims 20 to 22, wherein: The plurality of electrode sublayers include a first electrode sublayer and a second electrode sublayer which are stacked. The first electrode sublayer includes a plurality of first sub-electrodes extending along the first direction and arranged along the second direction, and a first interval is provided between adjacent first sub-electrodes. The second electrode sublayer includes a plurality of second sub-electrodes extending along the first direction and arranged along the second direction, and a second interval is provided between adjacent second sub-electrodes. The orthographic projection of the first interval on the first substrate is located inside a second sub-electrode, and the orthographic projection of the second interval on the first substrate is located inside a first sub-electrode.

24. The display device according to claim 1, wherein: The first equivalent prism array includes a plurality of first equivalent prisms extending along a first direction and arranged along a second direction. The second equivalent prism array includes a plurality of second equivalent prisms extending along the second direction and arranged along the first direction.

25. The display device according to any one of claims 1 to 24, wherein: Each of the plurality of display pixels includes a plurality of display sub-pixels, and the plurality of display sub-pixels are arranged in an array along the first direction and the second direction; An edge of a light emitting region of each of the plurality of display sub-pixels is a straight line, and the straight line is parallel to the first direction or the second direction.

26. The display device according to claim 24, wherein: Each of the plurality of display pixels includes a plurality of display sub-pixels, each of the plurality of display sub-pixels has a size L1 along the first direction and a size L2 along the second direction, The width of each of the plurality of first equivalent prisms along the second direction is L3, and the length of each of the plurality of second equivalent prisms along the first direction is L4, then L4 / L1=L3 / L2.

27. The display device according to any one of claims 1 to 24, wherein: Each of the plurality of display pixels has the same size along the first direction and the second direction, The first electrode layer includes a plurality of first strip electrodes extending along the first direction and arranged along the second direction, The second electrode layer includes a plurality of second strip electrodes extending along the second direction and arranged along the first direction; Under the first control signal, a driving voltage is applied to the first electrode layer, and a common voltage is applied to the second electrode layer. Under the second control signal, a driving voltage is applied to the second electrode layer, and a common voltage is applied to the first electrode layer.

28. The display device according to claim 27, wherein: Each of the plurality of display pixels includes a plurality of display sub-pixels, and the plurality of display sub-pixels have the same overall size along the first direction and the second direction.

29. The display device according to claim 24, further comprising: an eye tracking device configured to identify the position of a human eye, The control circuit is electrically connected to the eye tracking device and the liquid crystal light control panel, and is configured to control the first electrode layer and the second electrode layer to apply a first control signal when the eye tracking device recognizes that the line connecting the single eye and the double eye is along the second direction, and to control the first electrode layer and the second electrode layer to apply a second control signal when the eye tracking device recognizes that the line connecting the single eye and the double eye is along the first direction.

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