Display unit and display device

Abstract

The application provides a display unit and a display device. The display unit comprises a first substrate, a second substrate arranged opposite to the first substrate, a pixel wall arranged between the first substrate and the second substrate and surrounded by the first substrate and the second substrate to form an enclosed cavity, a light control plate comprising at least two blades rotatably connected in the enclosed cavity, a surface of the blade being provided with a reflection layer or a light absorption layer of a preset color, two blades of the at least two blades having opposite electric properties or opposite magnetic properties, and a driving electrode arranged at least in two of the first substrate, the second substrate and the pixel wall in a rotation direction of the blade, for driving the light control plate to rotate to a corresponding angle position to display a corresponding brightness. The display unit can avoid the problems of black spots appearing in white display of electrowetting display, splitting of ink shrinkage and coagulation of microcapsules into groups, and the response rate is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display unit and display device. Background Technology

[0002] Electronic paper technology is a novel display technology that is highly favored due to its advantages such as being lightweight, portable, and having low power consumption. Electronic paper typically uses electrophoresis display (EPD) technology as its display panel, and its display effect is close to that of natural paper.

[0003] Currently, the mainstream electrophoretic display technologies include microcapsule electrophoresis and electrowetting display (EWD). Traditional electrowetting electronic paper works by influencing the interfacial tension between a solid and a liquid to change the wettability (i.e., contact angle) of the solid-liquid interface, causing the droplet to deform. Microcapsule electrophoresis technology uses an external electric field to control the movement of microcapsules of different colors and with different charges, thereby achieving the display of different colors.

[0004] However, traditional electrowetting display technology can produce black spots when displaying white, and ink splitting is also prone to occur during ink shrinkage. Microcapsule electrophoresis technology causes charged microcapsules to clump together due to static electricity, resulting in a longer response time for the display panel and affecting the display effect. Summary of the Invention

[0005] This application provides a display unit and display device, aiming to solve the problems in the prior art of electrophoretic display panels, such as black spots easily appearing when displaying white using electrowetting display technology, cracking easily occurring when ink shrinks, and long response times caused by microcapsules easily agglomerating.

[0006] To address the aforementioned technical problems, the first technical solution provided in this application is: to provide a display unit. The display unit includes:

[0007] First substrate;

[0008] The second substrate is disposed opposite to the first substrate;

[0009] A pixel wall is disposed between the first substrate and the second substrate, forming a closed cavity with the first substrate and the second substrate;

[0010] The light control board includes at least two blades, which are rotatably connected to a closed cavity; the surface of the blades is provided with a reflective layer or a light-absorbing layer of a preset color; two of the at least two blades have opposite electrical properties or opposite magnetic properties.

[0011] The driving electrode is disposed at least in two of the first substrate, the second substrate and the pixel wall along the rotation direction of the blade, and is used to drive the light control board to rotate to the corresponding angle position to display the corresponding brightness.

[0012] In some embodiments, the light control board includes two blades arranged coaxially, with the two blades at 180° apart; the rotation axis of the blades is located on the central axis of the enclosed cavity; each blade has a white reflective layer on its surface; and a light-absorbing layer is provided on the side of the second substrate close to the first substrate.

[0013] The two blades have the same charge or the same magnetic moment modulus; the driving electrode includes a first electrode, a second electrode, a third electrode and a fourth electrode; the first electrode is disposed on the side of the first substrate close to the second substrate; the second electrode is disposed on the side of the light-absorbing layer close to the first substrate; the third electrode and the fourth electrode are respectively disposed on two opposite pixel walls along the rotation direction of the blade.

[0014] In some embodiments, the first electrode and the second electrode are positioned opposite each other; the third electrode and the fourth electrode are positioned opposite each other.

[0015] In the bright state, the third electrode and the fourth electrode have opposite electrical properties and their absolute voltage values ​​relative to the reference point are equal, or the third electrode and the fourth electrode have opposite magnetic properties and their magnetic moment moduli are equal, so as to drive the light control board to rotate to an angle position parallel to the first substrate.

[0016] In the gray state, the first electrode and the third electrode have the same electrical or magnetic properties, and the second electrode and the fourth electrode have the same electrical or magnetic properties but opposite to those of the first electrode. By controlling the absolute value of the voltage or the magnetic moment modulus of the first electrode and the third electrode, and by controlling the absolute value of the voltage or the magnetic moment modulus of the second electrode and the fourth electrode, the light control board is driven to rotate to the corresponding angular position.

[0017] In the black state, the first electrode and the second electrode have opposite electrical properties and their absolute voltage values ​​relative to the reference point are equal, or the first electrode and the second electrode have opposite magnetic properties and their magnetic moment moduli are equal, so as to drive the light control board to rotate to an angle position perpendicular to the first substrate.

[0018] In some embodiments, the first electrode includes at least two first sub-electrodes, wherein the first sub-electrode closest to the second sub-electrode is defined as the first black state electrode, and the other first sub-electrodes are defined as first gray state electrodes; the second electrode includes at least two second sub-electrodes, wherein the second sub-electrode closest to the first sub-electrode is defined as the second black state electrode, and the other second sub-electrodes are defined as second gray state electrodes; in a direction perpendicular to the first substrate, the orthographic projection of the second black state electrode on the first substrate overlaps with the orthographic projection of the first black state electrode on the first substrate, and the orthographic projection of the second gray state electrode on the first substrate does not overlap with the orthographic projection of the first gray state electrode on the first substrate and is symmetrical about the orthographic projection of the first black state electrode on the first substrate; the third electrode and the fourth electrode are disposed opposite each other;

[0019] In the bright state, the third electrode and the fourth electrode have opposite electrical properties and their absolute voltage values ​​relative to the reference point are equal, or the third electrode and the fourth electrode have opposite magnetic properties and their magnetic moment moduli are equal, so as to drive the light control board to rotate to an angle position parallel to the first substrate.

[0020] In the gray state, the first gray state electrode and the corresponding second gray state electrode have opposite electrical properties and equal absolute voltage values ​​relative to the reference point, or opposite magnetic properties and equal magnetic moment modulus, so as to drive the light control board to rotate to the corresponding angular position.

[0021] In the black state, the first black state electrode and the second black state electrode have opposite electrical properties and their absolute voltage values ​​relative to the reference point are equal, or the first black state electrode and the second black state electrode have opposite magnetic properties and their magnetic moment moduli are equal, so as to drive the light control board to rotate to an angle position perpendicular to the first substrate.

[0022] In some embodiments, the light control board includes three blades arranged coaxially, with the included angle between adjacent blades being a preset angle; the rotation axis of the blades is located on the central axis of the enclosed cavity; the three blades are respectively a first blade, a second blade, and a third blade along a preset rotation direction, and each blade has a first surface and a second surface arranged along the preset rotation direction;

[0023] In this configuration, a first reflective layer is provided on the second surface of the first blade and the first surface of the second blade, a second reflective layer is provided on the second surface of the second blade and the first surface of the third blade, and a light-absorbing layer is provided on the second surface of the third blade and the first surface of the first blade; the first reflective layer and the second reflective layer are of different colors.

[0024] Two of the three blades have the same charge or the same magnetic moment modulus; the driving electrode includes a fifth electrode and a sixth electrode; the fifth electrode and the sixth electrode are respectively set in two opposite pixel walls along the rotation direction of the blade.

[0025] In some embodiments, the display unit further includes a control circuit electrically connected to the fifth electrode and the sixth electrode, for controlling the electrical or magnetic position of the fifth electrode or the sixth electrode to drive blades of opposite electrical or magnetic properties to rotate to the corresponding angular position, so that the first reflective layer and the light-absorbing layer or the second reflective layer and the light-absorbing layer display the corresponding brightness according to the corresponding visible ratio.

[0026] In some embodiments, the display unit includes a first light control board, a second light control board, and a third light control board that are independent of each other; the first light control board, the second light control board, and the third light control board are arranged in a direction parallel to the first substrate, and the rotation axes of the three are located on the same axis;

[0027] The first light control board includes a first blade, a second blade, and a third blade;

[0028] The second light control board includes a fourth blade, a fifth blade, and a sixth blade distributed along a preset rotation direction. Each blade has a third surface and a fourth surface arranged along the preset rotation direction. A first reflective layer is provided on the fourth surface of the fourth blade and the third surface of the fifth blade, a third reflective layer is provided on the fourth surface of the fifth blade and the third surface of the sixth blade, and a light-absorbing layer is provided on the fourth surface of the sixth blade and the third surface of the fourth blade.

[0029] The third light control plate includes a seventh blade, an eighth blade, and a ninth blade distributed along a preset rotation direction. Each blade has a fifth surface and a sixth surface arranged along the preset rotation direction. A first reflective layer is provided on the sixth surface of the seventh blade and the fifth surface of the eighth blade, a fourth reflective layer is provided on the sixth surface of the eighth blade and the first surface of the ninth blade, and a light-absorbing layer is provided on the sixth surface of the ninth blade and the fifth surface of the seventh blade.

[0030] The first reflective layer is white, while the second, third, and fourth reflective layers are colored reflective layers of different colors.

[0031] In some embodiments, the display unit further includes a locking element and a monitoring lock circuit. The locking element is disposed on the rotating shaft of the blade and is electrically connected to the monitoring lock circuit.

[0032] The display unit also includes a control circuit electrically connected to the drive electrode. The control circuit is used to output a drive current to drive the blade to rotate to the corresponding angle position, and to stop outputting the drive current after the blade rotates to the corresponding angle position.

[0033] The monitoring lock circuit is used to monitor the drive current of the control circuit; the monitoring lock circuit is also used to: control the locking element to be in the locked state when the drive current is zero, so as to fix the blade; and control the locking element to be in the open state when the drive current is greater than zero, so as to rotate the blade to the corresponding angular position.

[0034] In some embodiments, the rotation speed of the light control board is adjusted by adjusting the driving current value on the driving electrode;

[0035] The sealed cavity is filled with buffer solution; when the driving electrode is in a non-conductive state, the buffer solution is used to keep the light control board in a static state.

[0036] To address the aforementioned technical problems, the second technical solution provided in this application is: to provide a display device. The display device includes:

[0037] The display panel includes multiple display units arranged in an array, and the display units are the display units provided in the above technical solutions;

[0038] The drive control board, electrically connected to the display panel, is used to provide drive signals to the display panel so that the display panel can display the corresponding image.

[0039] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a display unit and a display device. The display unit includes a first substrate, a second substrate, a pixel wall, a light control plate, and driving electrodes; wherein, the first substrate and the second substrate are disposed opposite to each other, and the pixel wall is disposed between the first substrate and the second substrate, forming a closed cavity with the first substrate and the second substrate. By setting a rotatable light control plate in the closed cavity, and making the light control plate include at least two blades rotatably connected to the closed cavity, the surface of the blades is provided with a reflective layer or a light-absorbing layer of a preset color, so that after the blades are rotated to the corresponding angle position, the light incident from the outside is reflected to the light-emitting surface to display the corresponding color and brightness. That is, the light control plate reflection display method is adopted, which eliminates the defects of traditional electrowetting display technology, such as black spots when displaying white and ink splitting during ink shrinkage, as well as the problem of long response time caused by microcapsules agglomerating due to electrostatic effects in microcapsule electrophoretic display technology. By making two of the at least two blades have opposite electrical or magnetic properties, the blades are driven to rotate via the driving electrode, controlling the light control board to rotate to the corresponding angle position, thereby controlling the visible area of ​​the light control board to achieve brightness control. Furthermore, the rotation speed of the blades can be controlled by controlling the driving signal strength of the driving electrode, thereby achieving dynamic adjustment of the refresh rate to adapt to different refresh rate requirements. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0041] Figure 1This is a schematic diagram of the structure of the display unit provided in the first embodiment of this application;

[0042] Figure 2a yes Figure 1 A schematic diagram of the structural state of the display unit in the embodiment under bright state;

[0043] Figure 2b yes Figure 2a A schematic diagram of the planar state of the display unit in the corresponding bright state;

[0044] Figure 3a yes Figure 1 A schematic diagram of the structural state of the display unit in the embodiment under black conditions;

[0045] Figure 3b yes Figure 3a A schematic diagram of the planar state of the display unit in the corresponding black state;

[0046] Figure 4a yes Figure 1 A schematic diagram of the structural state of the display unit in the embodiment under grayscale conditions;

[0047] Figure 4b yes Figure 4a A schematic diagram of the planar state of the display unit in the corresponding gray state;

[0048] Figure 5 This is a schematic diagram of the structure of the display unit provided in the second embodiment of this application;

[0049] Figure 6 yes Figure 5 A schematic diagram of the structural state of the display unit in the embodiment under bright state;

[0050] Figure 7 yes Figure 5 A schematic diagram of the structural state of the display unit in the embodiment under black conditions;

[0051] Figure 8a yes Figure 5 A schematic diagram of the structural state of the display unit in a gray state in the embodiment;

[0052] Figure 8b yes Figure 8a A schematic diagram of the planar state of the display unit in the corresponding gray state;

[0053] Figure 9a yes Figure 5 A schematic diagram of the structural state of the display unit in another gray state in the embodiment;

[0054] Figure 9b yes Figure 9a A schematic diagram of the planar state of the display unit in the corresponding gray state;

[0055] Figure 10 This is a schematic diagram of the structure of the display unit provided in the third embodiment of this application;

[0056] Figure 11 yes Figure 10 A schematic diagram of the structural state of the display unit in the embodiment under bright state;

[0057] Figure 12 yes Figure 10 A schematic diagram of the structural state of the display unit in the embodiment under black conditions;

[0058] Figure 13 yes Figure 10 A schematic diagram of the structural state of the display unit in the embodiment under grayscale conditions;

[0059] Figure 14a yes Figure 10 A schematic diagram of another structural state of the display unit in the embodiment under the on state;

[0060] Figure 14b yes Figure 14a A schematic diagram of the planar state of the display unit under the corresponding bright state;

[0061] Figure 15a yes Figure 10 A schematic diagram of another structural state of the display unit in the embodiment under the on state;

[0062] Figure 15b yes Figure 15a A schematic diagram of the planar state of the display unit under the corresponding bright state;

[0063] Figure 16 This is a schematic diagram of the planar structure of the display unit provided in the fourth embodiment of this application;

[0064] Figure 17 This is a schematic diagram of the structure of a display device provided in an embodiment of this application.

[0065] Figure label:

[0066] 10. Display unit; 11. First substrate; 12. Second substrate; 13. Pixel wall; 14. Light control board; 140. Blade; 1401. First surface; 1402. Second surface; 141. First blade; 142. Second blade; 143. Third blade; 144. First light control board; 145. Second light control board; 146. Third light control board; 147. Shaft; 148. Bracket; 15. Reflective layer; 151. First reflective layer; 152. Second reflective layer; 153. Third reflective layer ; 154, Fourth reflective layer; 155, Light-absorbing layer; 16, Driving electrode; 161, First electrode; 1611, First black state electrode; 1612, First gray state electrode; 162, Second electrode; 1621, Second black state electrode; 1622, Second gray state electrode; 163, Third electrode; 164, Fourth electrode; 165, Fifth electrode; 166, Sixth electrode; 17, Enclosed space; 18, Control circuit; 19, Monitoring lock circuit; 100, Display panel; 200, Driving control board. Detailed Implementation

[0067] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0068] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0069] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0070] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0071] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0072] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0073] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the display unit provided in the first embodiment of this application. In this embodiment, a display unit 10 is provided, which includes:

[0074] First substrate 11;

[0075] The second substrate 12 is disposed opposite to the first substrate 11;

[0076] The pixel wall 13 is disposed between the first substrate 11 and the second substrate 12, and together with the first substrate 11 and the second substrate 12, forms a closed cavity.

[0077] The light control board 14 includes at least two blades 140, which are rotatably connected to a closed cavity; the surface of the blades 140 is provided with a reflective layer 15 or a light-absorbing layer 155 of a preset color; two of the at least two blades 140 have opposite electrical properties or opposite magnetic properties.

[0078] The driving electrode 16 is disposed at least in two of the first substrate 11, the second substrate 12 and the pixel wall 13 along the rotation direction of the blade 140, and is used to drive the light control board 14 to rotate to the corresponding angle position to display the corresponding brightness.

[0079] The first substrate 11 and the second substrate 12 are disposed opposite to each other, serving as the light-emitting substrate and the driving substrate, respectively. The driving substrate includes a control circuit 18 electrically connected to the driving electrode 16 for transmitting driving signals to the driving electrode 16. The light-emitting substrate is disposed on the display side. External light enters the display unit 10 through the light-emitting substrate, and is then reflected by the light control plate 14 and emitted through the light-emitting substrate to display the corresponding brightness.

[0080] Pixel wall 13 is located between the first substrate 11 and the second substrate 12 to construct a closed cavity. Specifically, the orthographic projection of pixel wall 13 on the second substrate 12 is annular, and in the direction perpendicular to the first substrate 11, both ends of pixel wall 13 abut against the first substrate 11 and the second substrate 12 respectively, thereby forming a closed cavity with the first substrate 11 and the second substrate 12. The orthographic projection of pixel wall 13 on the second substrate 12 can be polygonal, circular, or elliptical. The polygon can be triangular, rectangular, trapezoidal, rhomboid, regular hexagonal, etc., and can be set according to the shape requirements of the sub-pixels.

[0081] The light control plate 14 is composed of at least two blades 140, which are rotatably connected to the enclosed cavity via a pivot 147. Specifically, a plane parallel to the rotation direction of the blades 140 is perpendicular to the first substrate 11 and the second substrate 12; and the blades 140 are plate-shaped, with the plane parallel to the rotation direction of the blades 140 perpendicular to the blades 140, so that the light control plate 14 can reflect light to the light-emitting surface or absorb light incident from the outside. Specifically, the surface of the blades 140 is provided with a reflective layer 15 of a preset color. When the blades 140 rotate to a preset angle position so that the reflective layer 15 faces the first substrate 11, the reflective layer 15 can be used to reflect the incident light into light of the preset color, so that the display unit 10 displays the preset color; or, the surface of the blades 140 is provided with a light-absorbing layer 155. When the blades 140 rotate to a preset angle position so that the light-absorbing layer 155 faces the first substrate 11, the light-absorbing layer 155 can be used to absorb the incident light, so that the display unit 10 displays black or reduces the display brightness of the display unit 10.

[0082] Furthermore, two of the at least two blades 140 may have one blade 140 carrying a positive charge and the other carrying a negative charge, thereby enabling the blades 140 to rotate through the interaction of charges; or, two of the at least two blades 140 may have one blade 140 carrying an N-polarity magnetism and the other carrying an S-polarity magnetism, thereby enabling the blades 140 to rotate under the influence of magnetic force. The rotation of the blades 140 through the interaction of charges or magnetism allows the light control plate 14 to rotate to a corresponding angular position, thereby enabling the display unit 10 to display color and brightness.

[0083] The driving electrodes 16 are specifically disposed on two of the first substrate 11, the second substrate 12, and the pixel wall 13 along the rotation direction of the blade 140, such that at least two driving electrodes 16 are arranged along the rotation direction of the blade 140. This allows the position of the blade 140 to be adjusted by controlling the electrical properties and current magnitude of the driving electrodes 16, enabling the blade 140 to rotate to a corresponding angular position to display the corresponding brightness. Specifically, the driving electrodes 16 can be made of a conductive film layer, to apply a current driving signal to the driving electrodes 16, thereby driving the blade 140 to rotate; alternatively, the driving electrodes 16 can be made of miniature electromagnets, and the magnetic poles and magnetic moment modulus of the driving electrodes 16 can be controlled by controlling the current direction and current magnitude, thereby driving the blade 140 to rotate.

[0084] In this embodiment, a rotatable light control plate 14 is provided in the closed cavity, and the light control plate 14 includes at least two blades 140 rotatably connected to the closed cavity. The surface of the blades 140 is provided with a reflective layer 15 or a light-absorbing layer 155 of a preset color. Thus, after the blades 140 are rotated to the corresponding angle position, the light incident from the outside is reflected to the light-emitting surface to display the corresponding color and brightness. That is, the light control plate 14 is used for reflection display, which eliminates the defects of traditional electrowetting display technology, such as black spots when displaying white and ink splitting during ink shrinkage, as well as the problem of long response time caused by microcapsules agglomerating due to electrostatic effects in microcapsule electrophoretic display technology. By making two of the at least two blades 140 have opposite electrical or magnetic properties, the blades 140 are driven to rotate by the drive electrode 16, thereby controlling the light control board 14 to rotate to the corresponding angle position, thus controlling the visible area of ​​the light control board 14 to achieve flexible control of brightness. Furthermore, the rotation speed of the blades 140 can be controlled by controlling the drive signal strength of the drive electrode 16, thereby achieving dynamic adjustment of the refresh rate and adapting to different refresh rate requirements.

[0085] In one embodiment, the light control board 14 includes two coaxially arranged blades 140, which are 180° apart; the rotation axis 147 of the blades 140 is located on the central axis of the enclosed cavity; each blade 140 has a white reflective layer 15 (first reflective layer 151) on its surface; the second substrate 12 has a light-absorbing layer 155 on the side near the first substrate 11; the two blades 140 have the same charge or the same magnetic moment modulus; the driving electrode 16 includes a first electrode 161, a second electrode 162, a third electrode 163 and a fourth electrode 164; the first electrode 161 is disposed on the side of the first substrate 11 near the second substrate 12; the second electrode 162 is disposed on the side of the light-absorbing layer 155 near the first substrate 11; the third electrode 163 and the fourth electrode 164 are respectively disposed on two opposite pixel walls 13 along the rotation direction of the blades 140.

[0086] Specifically, the light control board 14 consists of two blades 140 arranged symmetrically at 180°. The blades 140 rotate around a central axis, and a rotating shaft 147 is located on the central axis to drive the blades 140 to rotate. The surface of the blades 140 is covered with a white reflective material to reflect white light. The white reflective layer 15 is defined as the first emitting layer; a light-absorbing layer 155 is provided on the side of the second substrate 12 facing the closed cavity to absorb light, thereby achieving black display and displaying the corresponding brightness at a preset viewing ratio in conjunction with the first reflective layer 151. Furthermore, the two blades 140 have the same charge or equal magnetic moment modulus, so that under the action of a driving signal with the same absolute value, the two blades 140 are balanced in force, preventing the light control board 14 from deflecting and facilitating the design of the driving signal.

[0087] The first electrode 161 is located on the side of the first substrate 11 facing the closed cavity, and the second electrode 162 is located on the side of the second substrate 12 facing the closed cavity, and is disposed on the side of the light-absorbing layer 155 away from the second substrate 12. The third electrode 163 and the fourth electrode 164 are disposed on two opposing pixel walls 13 along the rotation direction of the blade 140. It can be understood that the display unit 10 includes a plurality of pixel walls 13, which are connected end to end to form a polygon. The third electrode 163 and the fourth electrode 164 are respectively disposed on two opposing pixel walls 13 located in the rotation direction of the blade 140. With the above-described arrangement of the driving electrodes 16, the first electrode 161, the second electrode 162, the third electrode 163 and the fourth electrode 164 are all distributed in the rotation direction of the blade 140, so that the rotation angle of the blade 140 can be controlled by adjusting the electrode energizing sequence and voltage. For example, the blade 140 can be driven to rotate to a specific angle position by the coordinated action of the first electrode 161 and the third electrode 163.

[0088] The display unit 10 also includes a control circuit 18, which is electrically connected to the driving electrode 16 and is used to provide driving signals, such as driving voltage signals and driving current signals, to the driving electrode 16. The appropriate driving signal can be selected according to the driving mode of the blade 140. The control circuit 18 can be set in one or more of the first substrate 11, the second substrate 12, and the pixel wall 13, and can be set according to the actual situation.

[0089] The aforementioned symmetrical design of the blades 140 and charge / magnetic moment balance ensure that the light control plate 14 can rotate stably under the influence of an electric field, preventing display abnormalities caused by uneven force leading to deflection of the blades 140. The first reflective layer 151 improves the utilization rate of ambient light, resulting in higher display brightness and a wider viewing angle; the light-absorbing layer 155 effectively absorbs light from non-target areas, enhancing contrast. By arranging the driving electrodes 16 around the light control plate 14 along the rotation direction of the blades 140, multi-electrode collaborative control can be used, allowing for precise adjustment of the rotation angle of the blades 140, thereby achieving multi-level grayscale display. Furthermore, the rotation driving method of the blades 140 avoids the particle agglomeration problem in traditional electrophoresis technology, improving response speed and display stability. The layered design of the pixel wall 13 and electrodes prevents charge interference, ensuring independent control of each sub-pixel.

[0090] Please see Figures 2a-4b , Figure 2a yes Figure 1 A schematic diagram of the display unit's structural state in the bright state in the embodiment. Figure 2b yes Figure 2a A schematic diagram of the planar state of the display unit in the corresponding bright state. Figure 3a yes Figure 1 A schematic diagram of the display unit's structural state in the black state in the embodiment. Figure 3b yes Figure 3a A schematic diagram of the planar state of the display unit in the corresponding black state. Figure 4a yes Figure 1 A schematic diagram of the display unit's structural state in grayscale in the embodiment. Figure 4b yes Figure 4a A schematic diagram of the planar state of the display unit in the corresponding gray state.

[0091] In one embodiment, the first electrode 161 and the second electrode 162 are arranged facing each other; the third electrode 163 and the fourth electrode 164 are arranged facing each other.

[0092] In the bright state, the third electrode 163 and the fourth electrode 164 have opposite electrical properties and their absolute voltage values ​​relative to the reference point are equal, or the third electrode 163 and the fourth electrode 164 have opposite magnetic properties and their magnetic moment moduli are equal, so as to drive the light control board 14 to rotate to an angle position parallel to the first substrate 11.

[0093] In the gray state, the first electrode 161 and the third electrode 163 have the same electrical or magnetic properties, and the second electrode 162 and the fourth electrode 164 have the same electrical or magnetic properties but opposite to those of the first electrode 161. By controlling the absolute value of the voltage or the magnetic moment modulus of the first electrode 161 and the third electrode 163, and by controlling the absolute value of the voltage or the magnetic moment modulus of the second electrode 162 and the fourth electrode 164, the light control board 14 is driven to rotate to the corresponding angular position.

[0094] In the dark state, the first electrode 161 and the second electrode 162 have opposite electrical properties and their absolute voltage values ​​relative to the reference point are equal, or the first electrode 161 and the second electrode 162 have opposite magnetic properties and their magnetic moment moduli are equal, so as to drive the light control board 14 to rotate to an angle position perpendicular to the first substrate 11.

[0095] In this embodiment, the first electrode 161 and the second electrode 162 are arranged facing each other, and the third electrode 163 and the fourth electrode 164 are arranged facing each other, so as to drive the light control board 14 to rotate to a position parallel to the first substrate 11 and a position perpendicular to the first substrate 11. To avoid the driving electrode 16 from affecting the display effect, the first electrode 161, the second electrode 162, the third electrode 163 and the fourth electrode 164 can be made of transparent material to form transparent electrodes.

[0096] like Figure 2a and Figure 2b As shown, by adjusting the electrical polarities of the third electrode 163 and the fourth electrode 164 to be opposite and their absolute voltage values ​​relative to the reference point to be equal, for example, the third electrode 163 is +aV and the fourth electrode 164 is -aV, where a is a constant, the third electrode 163 has an electrostatic attraction to the negatively charged blade 140, and the fourth electrode 164 also has an electrostatic attraction to the positively charged blade 140. Under the action of electrostatic force, the light control plate 14 rotates to a balance position parallel to the first substrate 11. The light control plate 14 reflects ambient light and blocks the light-absorbing layer 155 below, thus displaying a bright state. Alternatively, by controlling the current, the third electrode 163 facing the side of the enclosed space 17 can be designated as the N pole, and the fourth electrode 164 facing the side of the enclosed space 17 can be designated as the S pole. This allows the third electrode 163 to have a magnetic attraction to the blade 140 with the S magnetic pole, and the fourth electrode 164 to have a magnetic attraction to the blade 140 with the N magnetic pole. Under the action of the magnetic field, the light control plate 14 rotates to a balance position parallel to the first substrate 11. The light control plate 14 reflects ambient light and blocks the light-absorbing layer 155 below, thus displaying a bright state.

[0097] like Figure 3a and Figure 3bAs shown, by adjusting the electrical polarities of the first electrode 161 and the second electrode 162 to be opposite and their absolute voltage values ​​relative to the reference point to be equal, for example, the first electrode 161 is +aV and the second electrode 162 is -aV, where a is a constant, the first electrode 161 has an electrostatic attraction to the negatively charged blade 140, and the second electrode 162 also has an electrostatic attraction to the positively charged blade 140. Under the action of electrostatic force, the light control plate 14 rotates to a balance position perpendicular to the first substrate 11. In the direction perpendicular to the first substrate 11, the light control plate 14 does not block the light-absorbing layer 155. The lower light-absorbing layer 155 absorbs ambient light, making the display unit 10 appear completely black. Alternatively, by controlling the direction of the current, the first electrode 161 facing the side of the enclosed space 17 can be designated as the N pole, and the second electrode 162 facing the side of the enclosed space 17 as the S pole. This allows the first electrode 161 to exert a magnetic attraction on the blade 140 with the S pole, and the second electrode 162 to exert a magnetic attraction on the blade 140 with the N pole. Under the action of the magnetic field, the light control plate 14 rotates to a balance position perpendicular to the first substrate 11, exposing the light-absorbing layer 155. The light-absorbing layer 155 absorbs ambient light, making the display unit 10 appear completely black. It is understood that although the light control plate 14 will partially block the light-absorbing layer 155, the shape of the light control plate 14 is slender, and the blocking effect is minimal and negligible to the naked eye.

[0098] like Figure 4a and Figure 4bAs shown, by keeping the first electrode 161 and the third electrode 163 electrically or magnetically aligned, and the second electrode 162 and the fourth electrode 164 electrically or magnetically aligned, and by adjusting the voltage or magnetic moment of each driving electrode 16 to control the rotation angle of the light control plate 14, the light control plate 14 partially blocks the light-absorbing layer 155, so that the light control plate 14 and the light-absorbing layer 155 jointly participate in the display and display the corresponding brightness according to the corresponding viewing ratio. It can be understood that because the light control plate 14 rotates at a certain angle and is tilted relative to the first substrate 11, the area of ​​the orthogonal projection of the light control plate 14 on the first substrate 11 is smaller than the display area of ​​the display unit 10. The light control plate 14 only blocks a portion of the light-absorbing layer 155, and the ratio of the area of ​​the orthogonal projection of the light control plate 14 on the first substrate 11 to the area of ​​the unblocked portion of the light-absorbing layer 155 on the first substrate 11 is the aforementioned viewing ratio; that is, by controlling the viewing ratio, the proportion of ambient light reflected by the display unit 10 can be controlled, thereby achieving grayscale display. Specifically, by controlling the voltage of the first electrode 161 and the third electrode 163, the direction of the resultant force of the first electrode 161 and the third electrode 163 on the corresponding blade 140 can be matched with the angular position of the corresponding gray level of the light control board 14, so that the light control board 14 rotates to a preset angular position and is parallel to the direction of the resultant force. In order to balance the force on the light control board 14, the voltage of the second electrode 162 and the fourth electrode 164 can be symmetrically set with the first electrode 161 and the third electrode 163 about the rotation axis 147.

[0099] In this embodiment, by aligning the electrodes and synchronously controlling the electrical / magnetic properties, the light control board 14 can be precisely rotated to a preset angle, thereby achieving stable display in bright, gray, and black states. Adjusting the electrode voltage or magnetic moment can continuously control the rotation angle of the light control board 14, enabling multi-level adjustment of grayscale display and solving the problem of traditional electronic paper's inability to display grayscale. Furthermore, the drive method of electrically or magnetically driving the rotation of the light control board 14 avoids the response delay caused by charged particle agglomeration in traditional electrophoresis technology, thus improving the display refresh rate. The reflective properties of the light control board 14 can effectively shield black ink in the black state, reducing black spot defects in the bright state and expanding the display viewing angle. Specifically, ordinary black ink can be used to make the light-absorbing layer 155 instead of charged ink, reducing material costs, while the electrode-driven method avoids ink splitting problems and improves display uniformity.

[0100] Please see Figures 5-9b , Figure 5 This is a schematic diagram of the structure of the display unit provided in the second embodiment of this application. Figure 6 yes Figure 5 A schematic diagram of the display unit's structural state in the bright state in the embodiment. Figure 7 yes Figure 5 A schematic diagram of the display unit's structural state in the black state in the embodiment. Figure 8a yes Figure 5 A schematic diagram of the structural state of the display unit in a gray state in the embodiment. Figure 8b yes Figure 8a A schematic diagram of the planar state of the display unit in the corresponding gray state. Figure 9a yes Figure 5 A schematic diagram of the structural state of the display unit in another gray state in the embodiment. Figure 9b yes Figure 9a A schematic diagram of the planar state of the display unit in the corresponding gray state.

[0101] In one embodiment, the first electrode 161 includes at least two first sub-electrodes, wherein the first sub-electrode closest to the second sub-electrode is defined as the first black state electrode 1611, and the other first sub-electrodes are defined as the first gray state electrodes 1612; the second electrode 162 includes at least two second sub-electrodes, wherein the second sub-electrode closest to the first sub-electrode is defined as the second black state electrode 1621, and the other second sub-electrodes are defined as the second gray state electrodes 1622; in a direction perpendicular to the first substrate 11, the orthographic projection of the second black state electrode 1621 on the first substrate 11 overlaps with the orthographic projection of the first black state electrode 1611 on the first substrate 11, and the orthographic projection of the second gray state electrode 1622 on the first substrate 11 does not overlap with the orthographic projection of the first gray state electrode 1612 on the first substrate 11 and is symmetrical about the orthographic projection of the first black state electrode 1611 on the first substrate 11; the third electrode 163 and the fourth electrode 164 are disposed opposite each other;

[0102] In the bright state, the third electrode 163 and the fourth electrode 164 have opposite electrical properties and their absolute voltage values ​​relative to the reference point are equal, or the third electrode 163 and the fourth electrode 164 have opposite magnetic properties and their magnetic moment moduli are equal, so as to drive the light control board 14 to rotate to an angle position parallel to the first substrate 11.

[0103] In the gray state, the first gray state electrode 1612 and the corresponding second gray state electrode 1622 have opposite electrical properties and equal absolute voltage values ​​relative to the reference point, or opposite magnetic properties and equal magnetic moment modulus, so as to drive the light control board 14 to rotate to the corresponding angular position.

[0104] In the black state, the first black state electrode 1611 and the second black state electrode 1621 have opposite electrical properties and their absolute voltage values ​​relative to the reference point are equal, or the first black state electrode 1611 and the second black state electrode 1621 have opposite magnetic properties and their magnetic moment moduli are equal, so as to drive the light control board 14 to rotate to an angle position perpendicular to the first substrate 11.

[0105] Specifically, such as Figure 5As shown, both the first electrode 161 and the second electrode 162 include multiple sub-electrodes. Taking the axis passing through the rotation axis 147 and perpendicular to the first substrate 11 as a reference axis, the first electrode 161 is located on one side of the first axis, and the second electrode 162 is located on the other side of the reference axis. The first electrode 161 and the second electrode 162 are centrally symmetrically distributed about the rotation axis 147. The first sub-electrode of the first electrode 161 closest to the second electrode 162 is defined as the first black state electrode 1611, and the second sub-electrode of the second electrode 162 closest to the first electrode 161 is defined as the second black state electrode 1621. The remaining sub-electrodes of the first electrode 161 are defined as the first gray state electrodes 1612, and the remaining sub-electrodes of the second electrode 162 are defined as the second gray state electrodes 1622. The first black state electrode 1611 and the second black state electrode 1621 are both located on the reference axis and are positioned opposite each other, while the first gray state electrode 1612 and the second gray state electrode 1622 are centrally symmetrically distributed about the rotation axis 147.

[0106] like Figure 6 and Figure 2b As shown, similar to the bright state in the previous embodiment, by adjusting the electrical properties of the third electrode 163 and the fourth electrode 164 to be opposite and the absolute values ​​of their voltages relative to the reference point to be equal, or by controlling the current to make the magnetism of the third electrode 163 facing the closed space 17 opposite and the magnetism of the fourth electrode 164 facing the closed space 17 equal, the third electrode 163 and the fourth electrode 164 respectively exert electrostatic or magnetic forces on the corresponding electrically or magnetic blades 140. Under the action of electrostatic or magnetic forces, the light control plate 14 rotates to a balance position parallel to the first substrate 11. The light control plate 14 reflects ambient light and completely blocks the light-absorbing layer 155 below, thereby displaying the bright state.

[0107] like Figure 7 and Figure 3b As shown, similar to the black state in the previous embodiment, by adjusting the electrical polarity of the first black state electrode 1611 and the second black state electrode 1621 to be opposite and the absolute voltage values ​​of the two relative to the reference point to be equal, or by controlling the magnetic pole of the first black state electrode 1611 facing the closed space 17 to be opposite to the magnetic pole of the second black state electrode 1621 facing the closed space 17 and the magnetic moment modules to be equal, the first black state electrode 1611 and the second black state electrode 1621 respectively exert electrostatic or magnetic force on the corresponding electrically or magnetic blades 140. Under the action of electrostatic or magnetic force, the light control plate 14 rotates to a balance position perpendicular to the first substrate 11. In the direction perpendicular to the first substrate 11, the light control plate 14 does not block the light-absorbing layer 155. The lower light-absorbing layer 155 absorbs ambient light, so that the display unit 10 presents a completely black state.

[0108] like Figures 8a-9bAs shown, by controlling the electrical properties of the first gray state electrode 1612 and the second gray state electrode 1622 symmetrical to the first gray state electrode 1612 to be opposite and the absolute voltage values ​​to be equal, or by controlling the magnetic properties of the first gray state electrode 1612 and the second gray state electrode 1622 symmetrical to the first gray state electrode 1612 to be opposite and the magnetic moment modulus to be equal, the first gray state electrode 1612 and the second gray state electrode 1622 at the corresponding positions respectively exert electrostatic or magnetic forces on the blades 140 with corresponding electrical or magnetic properties. Under the action of electrostatic or magnetic forces, the light control plate 14 rotates to the corresponding angular position, so that the light control plate 14 and the unblocked light-absorbing layer 155 jointly participate in the display to display the corresponding grayscale brightness according to the corresponding visible ratio. That is, by controlling the driving signals of the first gray state electrode 1612 and the corresponding second gray state electrode 1622 at different positions, the light control plate 14 is controlled to rotate to the angle position of the corresponding gray level, so that the visible ratio of the light control plate 14 and the unblocked light-absorbing layer 155 corresponds to the gray level brightness to be displayed, thereby controlling the display unit 10 to display different gray level brightness.

[0109] In this embodiment, the multi-electrode design and symmetrical distribution of the first electrode 161 and the second electrode 162 enable precise control of the rotation angle of the light control board 14, achieving multi-level display effects of bright, gray, and black states. The overlapping arrangement of the black state electrodes enhances the electric field force, ensuring that the light control board 14 maintains a vertical angular position and avoiding the problem of incomplete black states caused by tilting the light control board 14. Simultaneously, the symmetrical layout of the gray state electrodes forms multi-angle drive through different electrode combinations, meeting the grayscale adjustment requirements. Furthermore, the multi-gray state electrode design allows for grayscale display by controlling only one first gray state electrode 1612 and its corresponding second gray state electrode 1622. Compared to the electrode control method for grayscale display in the previous embodiment, the electrode control method in this embodiment is simpler and easier to implement.

[0110] In one embodiment, the surface of each blade 140 in the display unit 10 may also be provided with a reflective layer 15 of other colors, such as red, green, and blue, so that other colors can be displayed in the bright state. When applied to the display panel 100, the display panel 100 may include display units 10 of different colors, and the display units 10 of different colors may be arranged according to a preset rule to form a pixel array, thereby achieving full-color display. For example, the display panel 100 includes multiple pixel units arranged in an array, and each pixel unit includes a red display unit 10, a green display unit 10, a blue display unit 10, and a white display unit 10, thereby achieving full-color display.

[0111] In one embodiment, in the display unit 10, a light-absorbing layer 155 is provided on the surface of each blade 140, and a reflective layer 15 of a preset color is provided on the side of the second substrate 12 near the first substrate 11.

[0112] In the bright state, the first electrode 161 and the second electrode 162 have opposite electrical properties and equal absolute values ​​of voltage relative to the reference point, or the first electrode 161 and the second electrode 162 have opposite magnetic properties and equal magnetic moment modulus, so as to drive the light control plate 14 to rotate to an angle position perpendicular to the first substrate 11, thereby causing the reflective layer 15 to reflect light to the light-emitting surface to display the corresponding color.

[0113] In grayscale, by controlling the electrical properties of the first electrode 161 and the third electrode 163 to be the same, and their voltages to be the same or different, the direction and magnitude of the force exerted by the first electrode 161 and the third electrode 163 on the blade 140 are controlled. Simultaneously, the electrical properties of the second electrode 162 and the fourth electrode 164 are the same but opposite to those of the first electrode 161. The voltage magnitudes of the second electrode 162 and the fourth electrode 164 are symmetrically set about the rotation axis 147 with respect to the voltage magnitudes of the first electrode 161 and the third electrode 163. This allows the light control plate 14 to rotate to the corresponding grayscale angle position and maintain force balance, ensuring that the visible ratio of the reflective layer 15 and the light-absorbing layer 155 corresponds to the grayscale, thereby displaying the corresponding grayscale brightness. Alternatively, by controlling the electrical properties of the corresponding first grayscale electrode 1612 and the corresponding second grayscale electrode 1622 to be opposite but their voltage magnitudes to be the same, the light control plate 14 is driven to rotate to the corresponding grayscale angle position and maintain force balance, thereby displaying the corresponding grayscale brightness.

[0114] In the black state, the third electrode 163 and the fourth electrode 164 have opposite electrical properties and their absolute voltage values ​​relative to the reference point are equal, or the third electrode 163 and the fourth electrode 164 have opposite magnetic properties and their magnetic moment moduli are equal, so as to drive the light control plate 14 to rotate to an angle position parallel to the first substrate 11. The light control plate 14 completely blocks the reflective layer 15 below, and the light-absorbing layer 155 on the surface of the light control plate 14 absorbs the incident ambient light, thereby displaying a completely black state.

[0115] Please see Figure 10 , Figure 10 This is a schematic diagram of the display unit provided in the third embodiment of this application. In this embodiment, the light control plate 14 includes three blades 140 arranged coaxially, and the included angle between adjacent blades 140 is a preset angle; the rotation shaft 147 of the blades 140 is located on the central axis of the closed cavity; the three blades 140 are respectively a first blade 141, a second blade 142 and a third blade 143 along a preset rotation direction, and each blade 140 has a first surface 1401 and a second surface 1402 arranged along the preset rotation direction;

[0116] Specifically, a first reflective layer 151 is provided on the second surface 1402 of the first blade 141 and the first surface 1401 of the second blade 142; a second reflective layer 152 is provided on the second surface 1402 of the second blade 142 and the first surface 1401 of the third blade 143; and a light-absorbing layer 155 is provided on the second surface 1402 of the third blade 143 and the first surface 1401 of the first blade 141. The first reflective layer 151 and the second reflective layer 152 are of different colors.

[0117] Two of the three blades 140 have the same charge or the same magnetic moment modulus; the driving electrode 16 includes a fifth electrode 165 and a sixth electrode 166; the fifth electrode 165 and the sixth electrode 166 are respectively disposed in two opposite pixel walls 13 along the rotation direction of the blades 140.

[0118] Specifically, the light control plate 14 includes three blades 140 symmetrically distributed along a central axis, with the blades 140 spaced apart at a specific angle. Each blade 140 has two surfaces with different functions, achieving light control through a combination of a reflective layer 15 and a light-absorbing layer 155. The first reflective layer 151 and the second reflective layer 152 are made of different colored materials to distinguish optical states. Specifically, the first reflective layer 151 can be a white reflective layer 15, and the second reflective layer 152 can be a colored reflective layer 15, such as red, green, or blue. The blades 140 move synchronously through the equality of charge or magnetic moment, and the driving electrode 16 is positioned relative to the pixel wall 13 to control the rotation direction of the blades 140. Specifically, the reflective layer 15 can be made of different materials, such as a microprism coating or an organic resin film, and the light-absorbing layer 155 can be made of low-cost materials such as polyurethane. The included angle of the blade 140 can be set to 120 degrees or other angles that meet optical requirements. The driving electrode 16 realizes the directional rotation of the blade 140 by changing the polarity of the current, thereby combining the white reflective layer 15, the color reflective layer 15 and the light-absorbing layer 155 to achieve black, white, gray and color display.

[0119] In this embodiment, the symmetrical distribution of the blades 140 and the differentiated design of the optical layers enable stable image display and rapid switching while reducing power consumption. The use of different colored reflective layers 15 expands the color gamut, and the light-absorbing layer 155 effectively eliminates bright-state black spots. Matching the charge or magnetic moment modulus between the blades 140 ensures synchronous movement at both ends of the light control board 14, improving response speed. The directional layout of the driving electrodes 16 makes the rotation of the blades 140 more precise. This structure replaces traditional particle motion with optical reflection, avoiding uneven display and response delay, while simplifying the structural complexity of color displays and providing a technological foundation for high-resolution and wide-viewing-angle displays.

[0120] In one embodiment, the display unit 10 further includes a control circuit 18 electrically connected to the fifth electrode 165 and the sixth electrode 166, for controlling the electrical or magnetic position of the fifth electrode 165 or the sixth electrode 166 to drive the blades 140 with opposite electrical or magnetic properties to rotate to the corresponding angular position, so that the first reflective layer 151 and the light-absorbing layer 155 or the second reflective layer 152 and the light-absorbing layer 155 display the corresponding brightness according to the corresponding visible ratio.

[0121] Specifically, the control circuit 18 is connected to the fifth electrode 165 and the sixth electrode 166, and the rotation of the blade 140 is achieved by adjusting the electrical or magnetic positions of the electrodes. The blade 140 includes a first reflective layer 151, a second reflective layer 152, and a light-absorbing layer 155. The visible ratio of the reflective layer 15 to the light-absorbing layer 155 changes by adjusting the angle of the blade 140. The tip of the blade 140 can be made of magnetic material, and rapid positioning can be achieved by the attraction of the positive and negative polarities of the electrode walls. The fifth electrode 165 and the sixth electrode 166 can be designed as variable polarity electrodes, and their magnetic positions can be controlled by the direction of the current. When the blade 140 rotates, the coverage ratio of the first reflective layer 151 or the second reflective layer 152 to the light-absorbing layer 155 changes, thereby adjusting the intensity of light reflection.

[0122] The following embodiment uses the example of the second blade 142 and the third blade 143 having opposite electrical or magnetic properties, the first reflective layer 151 being a white reflective layer 15, and the second reflective layer 152 being a colored reflective layer 15 to explain the driving display principle of the display unit 10.

[0123] Please see Figure 11 and Figure 2b , Figure 11 yes Figure 10 A schematic diagram of the display unit's structure in the bright state in the embodiment. In the bright state, the electrical / magnetic position of the sixth electrode 166 is located on the pixel wall 13 near the first substrate 11 and is different from the electrical / magnetic position of the second blade 142. Thus, the blade 140 is driven to rotate by the position of the electrode with electrical / magnetic properties, so that the second surface 1402 and the first surface 1401 of the first blade 141 face the first substrate 11, that is, the first reflective layer 151 faces the first substrate 11. The second reflective layer 152 and the light-absorbing layer 155 are blocked and do not participate in the display. The first reflective layer 151 reflects the incident ambient light to the display surface, thus displaying the bright state.

[0124] Please see Figure 12 and Figure 3b , Figure 12 yes Figure 10A schematic diagram of the display unit's structure in the black state in the embodiment. In the black state, the electrical / magnetic position of the fifth electrode 165 is located near the first substrate 11 on the pixel wall 13 and is different from the electrical / magnetic position of the third blade 143. Thus, the blade 140 is driven to rotate by the position of the electrode with electrical / magnetic properties, so that the second surface 1402 of the third blade 143 and the first surface 1401 of the first blade 141 face the first substrate 11, that is, the light-absorbing layer 155 faces the first substrate 11. The first reflective layer 151 and the second reflective layer 152 are blocked and do not participate in the display. The light-absorbing layer 155 absorbs the incident ambient light, thus displaying a completely black state. Alternatively, the electrical / magnetic position of the fifth electrode 165 is located near the second substrate 12 on the pixel wall 13 and is different from the electrical / magnetic position of the second blade 142, thereby driving the blade 140 to rotate to the bright position, so that the second surface 1402 of the third blade 143 and the first surface 1401 of the first blade 141 face the first substrate 11, that is, the light-absorbing layer 155 faces the first substrate 11, thereby displaying the black state.

[0125] Please see Figure 13 , Figure 8b and Figure 9b , Figure 13 yes Figure 10 A schematic diagram of the display unit's structure in grayscale in the embodiment. In grayscale, the electrical / magnetic position of the fifth electrode 165 is controlled to be located in the region between the end of the pixel wall 13 near the first substrate 11 and the end near the second substrate 12, and its electrical / magnetic properties are different from those of the first blade 141. And / or the electrical / magnetic position of the sixth electrode 166 is controlled to be located in the region between the end of the pixel wall 13 near the first substrate 11 and the end near the second substrate 12, and its electrical / magnetic properties are different from those of the third blade 143. Thus, by controlling the specific positions of the fifth electrode 165 and / or the sixth electrode 166 in the pixel wall 13, the first blade 141 rotates within a portion of the enclosed space 17 near the first substrate 11. This controls the area ratio of the first reflective layer 151 and the light-absorbing layer 155 participating in the display to correspond to the desired grayscale brightness, thereby displaying the corresponding grayscale brightness. That is, by changing the electrical / magnetic position of the fifth electrode 165 and / or the electrical / magnetic position of the sixth electrode 166, the visible ratio of the first reflective layer 151 to the light-absorbing layer 155 is changed, thereby realizing the graded grayscale brightness display of the display unit 10.

[0126] Further, please refer to Figure 14a and Figure 14b , Figure 14a yes Figure 10 A schematic diagram of another structural state of the display unit in the embodiment under the on state. Figure 14b yes Figure 14aA schematic diagram of the planar state of the display unit in the corresponding bright state. In the colored bright state, the electrical / magnetic position of the fifth electrode 165 is controlled to be located near the first substrate 11 on the pixel wall 13, and its electrical / magnetic properties are different from those of the second blade 142. And / or the electrical / magnetic position of the sixth electrode 166 is controlled to be located near the first substrate 11 on the pixel wall 13, and its electrical / magnetic properties are different from those of the third blade 143. This drives the light control plate 14 to rotate, so that the second reflective layer 152 between the second blade 142 and the third blade 143 faces the first substrate 11 to display the colored bright state. For example, if the second reflective layer 152 is red, the display unit 10 displays red in this state; if the second reflective layer 152 is green, the display unit 10 displays green in this state; if the second reflective layer becomes blue, the display unit 10 displays blue in this state.

[0127] Please see Figure 15a and Figure 15b , Figure 15a yes Figure 10 A schematic diagram of another structural state of the display unit in the embodiment under the on state. Figure 15b yes Figure 15a A schematic diagram of the planar state of the display unit in the corresponding bright state. Further, in the color bright state, the visible ratio of the second reflective layer 152 and the light-absorbing layer 155 can be adjusted by further adjusting the electrical / magnetic position of the driving electrode 16, thereby adjusting the displayed color brightness. Specifically, the electrical / magnetic position of the fifth electrode 165 is controlled to be located in the area between the end of the pixel wall 13 near the first substrate 11 and the end near the second substrate 12, and its electrical / magnetic properties are different from those of the second blade 142, so that the second blade 142 is driven to rotate to a position near the fifth electrode 165 with electrical / magnetic properties, thereby controlling the area ratio of the second reflective layer 152 and the light-absorbing layer 155 participating in the display to correspond to the desired color brightness, so as to display the corresponding color and brightness.

[0128] In this embodiment, the position of the electrode polarity is precisely adjusted by the control circuit 18, allowing the blade 140 to quickly position itself at a specific angle, thereby achieving dynamic adjustment of the display brightness. Grayscale level display can be achieved by adjusting the visible ratio of different reflective layers 15 and light-absorbing layers 155, solving the problem that traditional electronic paper cannot display different grayscale levels. By adjusting the coverage area of ​​the reflective layer 15, the display effect is more uniform and unaffected by viewing angle, expanding the viewing angle. Furthermore, the structural design of this display unit 10 simplifies the manufacturing process of color electronic paper, avoids the use of complex filters, and reduces production costs. Simultaneously, the fast response characteristics of the blade 140 can significantly improve the display refresh rate while maintaining low power consumption.

[0129] Please see Figure 16 , Figure 16This is a schematic diagram of the planar structure of the display unit provided in the fourth embodiment of this application. In this embodiment, the display unit 10 includes a first light control board 144, a second light control board 145, and a third light control board 146 that are independent of each other; the first light control board 144, the second light control board 145, and the third light control board 146 are arranged in a direction parallel to the first substrate 11, and the rotation axis 147 of the three are located on the same axis;

[0130] The first light control board 144 includes a first blade 141, a second blade 142 and a third blade 143;

[0131] The second light control plate 145 includes a fourth blade, a fifth blade, and a sixth blade (not shown) distributed along a preset rotation direction. Each blade 140 has a third surface and a fourth surface (not shown) arranged along the preset rotation direction. A first reflective layer 151 is provided on the fourth surface of the fourth blade and the third surface of the fifth blade, a third reflective layer 153 is provided on the fourth surface of the fifth blade and the third surface of the sixth blade, and a light-absorbing layer 155 is provided on the fourth surface of the sixth blade and the third surface of the fourth blade.

[0132] The third light control plate 146 includes a seventh blade, an eighth blade, and a ninth blade (not shown) distributed along a preset rotation direction. Each blade has a fifth surface and a sixth surface (not shown) arranged along the preset rotation direction. A first reflective layer 151 is provided on the sixth surface of the seventh blade and the fifth surface of the eighth blade, a fourth reflective layer 154 is provided on the sixth surface of the eighth blade and the fifth surface of the ninth blade, and a light-absorbing layer 155 is provided on the sixth surface of the ninth blade and the fifth surface of the seventh blade.

[0133] Among them, the first reflective layer 151 is a white reflective layer 15, and the second reflective layer 152, the third reflective layer 153 and the fourth reflective layer 154 are colored reflective layers 15 with different colors.

[0134] Specifically, the display unit 10 is provided with three independent light control boards 14, namely the first light control board 144, the second light control board 145 and the third light control board 146. The three light control boards 14 are arranged in sequence along the direction parallel to the substrate (the first substrate 11 and the second substrate 12) and their rotation axes 147 are collinear.

[0135] The structure and function of the first light control board 144 are the same as those of the first light control board 144. Figure 10The light control board 14 provided in the embodiment has the same structure and function, and can achieve the same technical effect. Please refer to the relevant description above for details. Similar to the first light control board 144, the second light control board 145 includes three blades 140 distributed along the rotation direction. Each blade 140 has a third surface and a fourth surface facing each other. The third and fourth surfaces are arranged along a preset rotation direction, which can be clockwise (or counterclockwise in other embodiments). A first reflective layer 151 is provided on the surface between the fourth and fifth blades, a third reflective layer 153 is provided on the surface between the fifth and sixth blades, and a light-absorbing layer 155 is provided on the surface between the sixth and fourth blades. The third light control board 146 also includes three blades 140 distributed along the rotation direction. Each blade 140 has a fifth and a sixth surface facing each other and arranged along a preset rotation direction. A first reflective layer 151 is provided on the surface between the seventh and eighth blades, a fourth reflective layer 154 is provided on the surface between the eighth and ninth blades, and a light-absorbing layer 155 is provided on the surface between the ninth and seventh blades.

[0136] The first reflective layer 151 is made of white reflective material, while the other reflective layers 15 are made of reflective materials of different colors. The light-absorbing layer 155 can be made of black resin or carbon-based material. Specifically, the second reflective layer 152, the third reflective layer 153, and the fourth reflective layer 154 can be red reflective layer 15, green reflective layer 15, and blue reflective layer 15, respectively, so that the display unit 10 constitutes a pixel unit.

[0137] In this system, the blades 140 of each light control plate 14 rotate synchronously via a rotating shaft 147, and the light reflection path is switched by combining different reflective layers 15. The three light control plates 14 are independent of each other, that is, the first light control plate 144, the second light control plate 145 and the third light control plate 146 are each independently controlled to rotate, and each displays color and brightness independently. The specific driving display method is the same as or similar to that in the above embodiment, and can be referred to the relevant description above, which will not be repeated here.

[0138] In this embodiment, multi-layer light control is achieved through the combination of blades 140 of three independent light control plates 14. The white reflective layer 15 enhances display brightness, the colored reflective layer 15 provides color selection, and the light-absorbing layer 155 reduces light interference and can lower display brightness, thus achieving grayscale adjustment. The collinear design of the blades 140's rotating shafts 147 ensures synchronous rotation and improves response speed. The alternating arrangement of the reflective layer 15 and the light-absorbing layer 155 can precisely control the light reflection ratio, achieving grayscale adjustment. The cooperation between the colored reflective layer 15 and the white reflective layer 15 supports color display, avoiding traditional filter technology. Furthermore, the arrangement and combination of different colored reflective layers 15 expands the viewing angle and improves the display effect. Further, by setting three independent light control plates 14, each capable of displaying different colors, the display unit 10 can achieve full-color display and improve the color gamut, and significantly enhance the resolution of the display panel 100.

[0139] Similar to this embodiment, in other embodiments, the display unit 10 may also include two independent light control boards 14, or it may include four independent light control boards 14. The number of light control boards 14 in the display unit 10 can be set according to the resolution requirements of the display panel 100, and is not specifically limited thereto.

[0140] Please continue reading. Figure 10 In one embodiment, the display unit 10 further includes a locking member (not shown) and a monitoring lock circuit 19. The locking member is disposed on the rotating shaft 147 of the blade 140 and is electrically connected to the monitoring lock circuit 19. The display unit 10 also includes a control circuit 18 electrically connected to the driving electrode 16. The control circuit 18 is used to output a driving current to drive the blade 140 to rotate to a corresponding angular position, and to stop outputting the driving current after the blade 140 rotates to the corresponding angular position. The monitoring lock circuit 19 is used to monitor the driving current of the control circuit 18. The monitoring lock circuit 19 is also used to: control the locking member to be in a locked state when the driving current is zero, so as to fix the blade 140; and control the locking member to be in an open state when the driving current is greater than zero, so as to make the blade 140 rotate to the corresponding angular position.

[0141] The locking element is connected to the rotating shaft 147 of the blade 140 and is controlled by the monitoring locking circuit 19. The monitoring locking circuit 19 controls the action of the locking element by detecting the state of the drive current output by the control circuit 18. When the drive current is zero, the locking element locks the position of the blade 140; when the drive current is present, the locking element releases the blade 140.

[0142] In specific embodiments, a magnetic locking structure can be used, where a magnetic block and an electromagnet work together to achieve the locking action, or a mechanical latching structure can be used in conjunction with an electromagnetic drive device. For example, a gear latching structure can be used, where when the drive current is zero, the locking bar is engaged in the groove corresponding to the gear to lock the rotating shaft 147, thereby locking the position of the blade 140; when the drive current is not zero, the locking bar disengages from the gear groove, and the rotating shaft 147 can drive the fan blade to rotate.

[0143] The monitoring lock circuit 19 can consist of a current detection module and a logic control unit, which triggers the locking element to act by monitoring changes in the drive current in real time. The locking state of the locking element is achieved through physical latching or magnetic attraction, while the unlocking state is achieved through electromagnetic repulsion or mechanical unlocking. The connection between the blade 140 shaft 147 and the locking element can be either direct fixation or connection through a transmission mechanism.

[0144] In this embodiment, through the linkage control of the locking component and the monitoring lock circuit 19, the driving current can be cut off and the position of the blade 140 can be locked immediately after the blade 140 reaches the target angle. This design allows the display unit 10 to maintain the display state without continuous power supply, thereby achieving zero power consumption to maintain the display effect. The real-time monitoring of the driving current by the monitoring lock circuit 19 ensures that the locking action is precisely synchronized with the movement state of the blade 140, avoiding locking failure due to current fluctuations. The mechanical locking structure of the locking component can effectively prevent the blade 140 from shifting when the power is off, improving display stability. This control method directly responds to the current state through hardware circuitry, significantly reducing energy consumption compared to the continuous power supply mode of traditional electronic paper. At the same time, the simple design of the mechanical locking structure reduces manufacturing costs. In color electronic paper applications, this technical feature ensures that the RGB sub-pixel fan blades can be accurately fixed in position after switching, avoiding color mixing problems caused by the shaking of the blade 140.

[0145] In one embodiment, the rotation speed of the light control plate 14 is adjusted by adjusting the driving current value on the driving electrode 16; the enclosed cavity is filled with buffer solution; when the driving electrode 16 is in a non-conductive state, the buffer solution is used to keep the light control plate 14 in a stationary state.

[0146] The rotation speed of the light control plate 14 can be controlled by adjusting the current value on the driving electrode 16. The driving electrode 16 is made of conductive material, and the current magnitude is positively correlated with the rotation speed. The sealed cavity is filled with a viscous and fluid buffer solution, which can be silicone oil or a liquid with similar properties. Its function is to provide damping force to keep the light control plate 14 stationary when the driving electrode 16 is de-energized. When the driving electrode 16 is not energized, the buffer solution counteracts the inertial motion of the light control plate 14 through viscous resistance, keeping the light control plate 14 in its current stable position. Buffer solutions of different viscosities can be used to match different rotation speed requirements. For example, high-viscosity liquids are suitable for scenarios requiring slow rotation, while low-viscosity liquids are suitable for high-speed rotation scenarios. Specifically, the buffer solution also has the properties of high resistivity, low electrolyte content, and non-polarity to reduce the impact of the buffer solution on the charge distribution on the blades 140 and prevent the redistribution of charges through the buffer solution from causing a failure to maintain charge separation on the blades 140.

[0147] In this embodiment, the rotation speed of the light control board 14 can be precisely controlled by adjusting the driving current, enabling the display unit 10 to have an adjustable refresh rate. The damping effect of the buffer solution ensures that the light control board 14 remains stably in the target position when the power is off. This design allows the display unit 10 to maintain the image with zero power consumption when not in operation. The viscous buffer solution also acts as a shock absorber, reducing wear on mechanical parts and extending the service life of the device. Through the synergistic effect of liquid damping and current driving, both dynamic adjustment capability and static stability are ensured. This dual protection mechanism significantly improves the reliability and energy efficiency of the display device.

[0148] In one embodiment, the display unit 10 may further include a bracket 148, one end of which is fixed to the second substrate 12, and the other end is connected to a rotating shaft 147, which is rotatable relative to the bracket 148. A monitoring lock circuit 19 is disposed on the second substrate 12, and the locking member is electrically connected to the monitoring lock circuit 19 through the bracket 148. It can be understood that conductive lines are arranged inside the bracket 148, and the locking member is electrically connected to the monitoring lock circuit 19 through the conductive lines within the bracket 148.

[0149] Please see Figure 17 , Figure 17 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. In this embodiment, a display device is provided, which includes:

[0150] The display panel 100 includes a plurality of display units 10 arranged in an array, and the display units 10 are the display units 10 provided in the above embodiments;

[0151] The drive control board 200 is electrically connected to the display panel 100 and is used to provide drive signals to the display panel 100 so that the display panel 100 displays the corresponding image.

[0152] The display panel 100 includes display units 10 arranged in an array. Each display unit 10 controls the rotation of its fan blades via an electrically controlled electrode wall and an electrode polarity circuit. The fan blades are made of white, colored reflective material, and / or black light-absorbing material. Two blades 140 may have positive and negative charges distributed on their surfaces, or the ends of two blades 140 may be coated with magnetic powder to form S-pole and N-pole magnetic blocks, respectively. The drive control board 200 provides a polarity signal to the electrode wall. When the monitoring lock circuit 19 detects current, the locking element releases the fan blades, and the magnetic blocks on the blades 140 rotate under the polarity attraction of the electrode wall, causing the corresponding color reflective surface to face the light-emitting surface. After the image is fixed, the circuit is turned off, and the lock cylinder latches the fan blades, achieving zero-power display. Specifically, the specific structure and function of the display unit 10 are the same as or similar to those of the display unit 10 provided in the above embodiments, and can achieve the same technical effects. Please refer to the relevant description above for details.

[0153] Specifically, in the display panel 100, an insulating film layer can be provided between adjacent display units 10, and an insulating film layer can be provided between the pixel walls 13 of adjacent display units 10 that are close to each other, to prevent interference between charges and driving signals. The insulating film layer can be made of insulating materials, such as inorganic insulating materials like silicon dioxide and alumina, or organic polymer insulating materials. The specific material can be set according to the preparation requirements to ensure charge separation and that the electric field does not conduct between the film layers.

[0154] In this embodiment, the blades 140 are driven to rotate by the driving electrode 16, significantly improving the response speed compared to the particle motion method of traditional electrophoresis technology, achieving millisecond-level image switching. The blades 140 are released when power is applied and fixed when power is off by a locking mechanism, allowing the image to remain visible for months or even longer without power, completely solving the problem of image loss after power failure in traditional electronic paper. Color display is achieved through a combination of RGB three-color reflective blades 140, eliminating the need for color filters and reducing production costs. The uniform structure of the reflective blades 140 also avoids the uneven color rendering problem caused by black spots in the bright state of traditional electronic paper. The blade thickness and support 148 design are negligible, and the windmill-like structure with three polar electrode walls expands the viewing angle to over 160 degrees. The blade rotation speed can be controlled by adjusting the polarity of the electrode walls, thereby adjusting the screen refresh rate. Simultaneously, the combined structure of multiple light control boards 14 in the display unit 10 allows a single display unit 10 to present more grayscale levels and color gamuts, improving display resolution.

[0155] The above are merely embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A display unit, characterized by The application relates to a light control panel, comprising: a first substrate; a second substrate arranged opposite to the first substrate; a pixel wall arranged between the first substrate and the second substrate and surrounded by the first substrate and the second substrate to form an enclosed cavity; the light control panel comprises at least two blades which are rotationally connected in the enclosed cavity; the surface of the blades is provided with a reflection layer or a light absorption layer of a preset color; two of the at least two blades have opposite electric properties or opposite magnetic properties; a driving electrode is arranged on at least two of the first substrate, the second substrate and the pixel wall in the rotation direction of the blades, and is used for driving the light control panel to rotate to a corresponding angle position to display a corresponding brightness. The light control panel comprises two coaxially arranged blades, and the two blades are 180 degrees apart; the rotation shaft of the blades is located on the central axis of the enclosed cavity; the surface of each blade is provided with a white reflection layer; the second substrate is provided with a light absorption layer on the side close to the first substrate; the two blades have the same electric charge or the same magnetic moment modulus; the driving electrode comprises a first electrode, a second electrode, a third electrode and a fourth electrode; the first electrode is arranged on the side of the first substrate close to the second substrate; the second electrode is arranged on the side of the light absorption layer close to the first substrate; the third electrode and the fourth electrode are arranged on the opposite pixel walls in the rotation direction of the blades. The first electrode and the second electrode are arranged opposite to each other; the third electrode and the fourth electrode are arranged opposite to each other; In the bright state, the third electrode and the fourth electrode have opposite electric properties and the absolute values of the voltages of the two electrodes relative to a reference point are equal, or the third electrode and the fourth electrode have opposite magnetic properties and the magnetic moment moduli are equal, so as to drive the light control panel to rotate to an angle position parallel to the first substrate; In the gray state, the first electrode and the third electrode have the same electric properties or magnetic properties, the second electrode and the fourth electrode have the same electric properties or magnetic properties and opposite electric properties or magnetic properties to the first electrode, and the absolute values of the voltages of the first electrode and the third electrode or the magnetic moment moduli are controlled, and the absolute values of the voltages of the second electrode and the fourth electrode or the magnetic moment moduli are controlled, so as to drive the light control panel to rotate to a corresponding angle position; In the black state, the first electrode and the second electrode have opposite electric properties and the absolute values of the voltages of the two electrodes relative to a reference point are equal, or the first electrode and the second electrode have opposite magnetic properties and the magnetic moment moduli are equal, so as to drive the light control panel to rotate to an angle position perpendicular to the first substrate.

2. The display unit of claim 1, wherein, The first electrode comprises at least two first sub-electrodes, and the second electrode comprises at least two second sub-electrodes; the first sub-electrode close to the second sub-electrode in the at least two first sub-electrodes is defined as a first black state electrode, and the other first sub-electrodes are defined as first gray state electrodes; the second sub-electrode close to the first sub-electrode in the at least two second sub-electrodes is defined as a second black state electrode, and the other second sub-electrodes are defined as second gray state electrodes.

3. The display unit of claim 2, wherein, ​ ​ ​ ​ 4. The display unit of claim 2, wherein, ​ ​ In a direction perpendicular to the first substrate, the orthographic projection of the second black electrode on the first substrate overlaps with the orthographic projection of the first black electrode on the first substrate, and the orthographic projection of the second gray electrode on the first substrate is non-overlapping with the orthographic projection of the first gray electrode on the first substrate and is symmetrical about the orthographic projection of the first black electrode on the first substrate; the third electrode and the fourth electrode are arranged opposite to each other; In the bright state, the third electrode and the fourth electrode are opposite in electrical property and have equal absolute values of voltage relative to a reference point, or the third electrode and the fourth electrode are opposite in magnetic property and have equal magnetic moment magnitudes, so as to drive the light control plate to rotate to an angular position parallel to the first substrate; In the gray state, the first gray electrode and the corresponding second gray electrode are opposite in electrical property and have equal absolute values of voltage relative to a reference point, or are opposite in magnetic property and have equal magnetic moment magnitudes, so as to drive the light control plate to rotate to a corresponding angular position; In the black state, the first black electrode and the second black electrode are opposite in electrical property and have equal absolute values of voltage relative to a reference point, or the first black electrode and the second black electrode are opposite in magnetic property and have equal magnetic moment magnitudes, so as to drive the light control plate to rotate to an angular position perpendicular to the first substrate.

5. The display unit of claim 1, wherein, The light control plate comprises three of the vanes arranged coaxially, and the included angle between adjacent vanes is a preset angle; the rotation shaft of the vane is located on the central axis of the closed cavity; The three vanes are respectively a first vane, a second vane and a third vane along a preset rotation direction, and each vane has a first surface and a second surface arranged along the preset rotation direction; The second surface of the first vane and the first surface of the second vane are provided with a first reflective layer, the second surface of the second vane and the first surface of the third vane are provided with a second reflective layer, and the second surface of the third vane and the first surface of the first vane are provided with an absorptive layer; the colors of the first reflective layer and the second reflective layer are different from each other; Two of the three vanes have the same charge amount or equal magnetic moment magnitudes; the driving electrode comprises a fifth electrode and a sixth electrode; the fifth electrode and the sixth electrode are arranged in opposite two pixel walls along the rotation direction of the vane.

6. The display unit of claim 5, wherein, The display unit further comprises a control circuit electrically connected with the fifth electrode and the sixth electrode, for controlling the electrical property position or the magnetic property position of the fifth electrode or the sixth electrode, so as to drive the vanes opposite in electrical property or magnetic property to rotate to a corresponding angular position, so that the first reflective layer and the absorptive layer or the second reflective layer and the absorptive layer display corresponding brightness in a corresponding visible ratio.

7. The display unit of claim 6, wherein, The display unit comprises a first light control plate, a second light control plate and a third light control plate which are independent of each other; the first light control plate, the second light control plate and the third light control plate are arranged along a direction parallel to the first substrate, and the rotation shafts of the three light control plates are located on the same axis; The first light control plate comprises the first vane, the second vane and the third vane; The second light control plate comprises a fourth blade, a fifth blade and a sixth blade distributed along a preset rotation direction, each blade having a third surface and a fourth surface arranged along the preset rotation direction; wherein the fourth surface of the fourth blade and the third surface of the fifth blade are provided with the first reflective layer, the fourth surface of the fifth blade and the third surface of the sixth blade are provided with a third reflective layer, and the fourth surface of the sixth blade and the third surface of the fourth blade are provided with the light-absorbing layer; The third light control plate comprises a seventh blade, an eighth blade and a ninth blade distributed along a preset rotation direction, each blade having a fifth surface and a sixth surface arranged along the preset rotation direction; wherein the sixth surface of the seventh blade and the fifth surface of the eighth blade are provided with the first reflective layer, the sixth surface of the eighth blade and the fifth surface of the ninth blade are provided with a fourth reflective layer, and the sixth surface of the ninth blade and the fifth surface of the seventh blade are provided with the light-absorbing layer; The first reflective layer is a white reflective layer, and the second reflective layer, the third reflective layer and the fourth reflective layer are color reflective layers with different colors.

8. The display unit according to any of claims 1-7, characterized by, The display unit further comprises a locking member and a monitoring lock circuit, the locking member is arranged on the rotating shaft of the blade and is electrically connected with the monitoring lock circuit; The display unit further comprises a control circuit electrically connected with the driving electrode, the control circuit is used for outputting a driving current to drive the blade to rotate to a corresponding angle position and stopping outputting the driving current after the blade rotates to the corresponding angle position; The monitoring lock circuit is used for monitoring the driving current of the control circuit; the monitoring lock circuit is further used for: when the driving current is zero, controlling the locking member to be in a locking state to fix the blade; when the driving current is greater than zero, controlling the locking member to be in an open state to make the blade rotate to the corresponding angle position.

9. The display unit according to any of claims 1-7, characterized by, The rotation speed of the light control plate is adjusted by adjusting the driving current value on the driving electrode; The closed cavity is filled with a buffer solution; when the driving electrode is in a non-conductive state, the buffer solution is used to maintain the light control plate in a static state.

10. A display device, characterized by The display panel comprises a plurality of display units arranged in an array manner, and each display unit is the display unit as claimed in any one of claims 1-9. The driving control board is electrically connected with the display panel and is used for providing a driving signal to the display panel to make the display panel display a corresponding image. ​

Images