Privacy display assembly, display device and privacy display method

Abstract

The application provides a kind of privacy component, display device and privacy display method. Through the cooperation of magnetic control valve and control module, the magnetic control fluid can be controlled in the second chamber in the edge area in the non-privacy mode, and the magnetic control fluid can be controlled in the first chamber in the privacy function area in the privacy mode, to realize the quick switching of privacy or not. At the same time, the movement state of the magnetic control fluid in the first chamber can adjust the privacy viewing angle and realize local privacy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a privacy assembly, a display device and a privacy display method. BACKGROUND

[0002] With the development of display technology, various personalized needs are also concerned, and display with privacy function is also rising, and privacy module is born.

[0003] Among them, the most common is the privacy film, which is equivalent to adding a privacy coating in the mobile phone tempered film, and using micro-louver optical technology. However, there are many inconveniences after pasting the privacy film, for example, after using the privacy film, the visual angle in the privacy mode cannot be adjusted, the quick switching of privacy and non-privacy cannot be achieved, and local privacy cannot be achieved. SUMMARY

[0004] The technical problem solved by the present application is to provide a privacy assembly, a display device and a privacy display method, which solves the problem that the existing privacy display cannot adjust the privacy visual angle and switch between privacy and non-privacy.

[0005] In order to solve the above technical problems, the first technical solution provided by the present application is to provide a privacy assembly with a privacy function area and an edge area located on the side of the privacy function area; wherein it comprises:

[0006] The privacy module has a first chamber located in the privacy function area and a second chamber located in the edge area; the privacy module includes a magnetic control valve located in the edge area; the magnetic control valve is used to selectively communicate the first chamber and the second chamber;

[0007] The magnetic control fluid is at least partially arranged in the second chamber; the magnetic control fluid is a light shielding material;

[0008] The control module is used to control the on-off state of the magnetic control valve, and is also used to control the motion state of the magnetic control fluid in the first chamber and the second chamber.

[0009] The magnetic control valve comprises a base, an elastic member and a magnetic structure;

[0010] The base surrounds to form a channel, and the channel constitutes at least part of the second chamber; the magnetic structure is located between the first chamber and the second chamber; in the elastic force direction of the elastic member, one end of the elastic member is connected with the magnetic structure, and the other end is connected in the base;

[0011] When the magnetic control valve is in the open state, the magnetic attraction force of the magnetic control valve acting on the magnetic structure is less than the elastic force of the elastic member acting on the magnetic structure, the magnetic structure is spaced apart from the base, and the first chamber and the second chamber are in communication with each other;

[0012] When the magnetic control valve is in the closed state, the magnetic attraction force of the magnetic control valve acting on the magnetically-interactive structure is greater than the elastic force of the elastic member acting on the magnetically-interactive structure, and the magnetically-interactive structure is arranged in contact with the base and at least blocks the port of the channel, and the first chamber and the second chamber are isolated from each other.

[0013] The side of the base facing the first chamber has a mounting groove, and the elastic member is at least partially arranged in the mounting groove; when the magnetic control valve is in the closed state, the magnetically-interactive structure blocks the port of the channel facing the first chamber and the slot of the mounting groove.

[0014] The magnetic control valve is arranged in one-to-one correspondence with the second chamber; the second chamber is one and is located on one side of the first chamber along the elastic force direction;

[0015] Alternatively, the second chamber is a plurality of chambers, and the plurality of second chambers are arranged side by side and located on one side of the first chamber along the elastic force direction;

[0016] Alternatively, the second chamber is a plurality of chambers, and the plurality of second chambers are respectively located on opposite sides of the first chamber along the elastic force direction.

[0017] The privacy protection module further comprises a reflective layer, and the reflective layer comprises:

[0018] A reflective coating is arranged on the surface of the magnetically-interactive structure of the magnetic control valve close to the first chamber;

[0019] And / or,

[0020] A reflective coating is arranged on the light-entering side surface of the privacy protection module and located in the edge region.

[0021] The privacy protection module further comprises a frame, and the frame has transparency and insulation;

[0022] The frame comprises a first frame and a second frame; the first frame is used to form the first chamber, and the second frame is used to form the second chamber; the magnetic control valve is arranged between the first frame and the second frame;

[0023] Alternatively, the base of the magnetic control valve surrounds to form the second chamber, and the frame is used to form the first chamber;

[0024] Alternatively, the magnetic control valve is arranged in the frame, and the space surrounded by the frame is divided into the first chamber and the second chamber.

[0025] The control module comprises a control circuit and a first electromagnetic element, and the control circuit controls the on-off state of the magnetic control valve by controlling the power-on state of the first electromagnetic element;

[0026] The first electromagnetic element is arranged on the side of the corresponding magnetic control valve away from the first chamber, and is at least partially arranged opposite to the magnetically-interactive structure.

[0027] The control module further includes a plurality of second electromagnetic elements arranged at intervals, and the control circuit controls the movement state of the magnetically controlled fluid in the first chamber and the second chamber by controlling the energization state of the second electromagnetic elements.

[0028] The second electromagnetic elements are arranged on the light-in side of the anti-peep module, or the second electromagnetic elements are arranged on the light-out side of the anti-peep module.

[0029] The control module further includes a support structure and a heat conduction layer, the support structure and the heat conduction layer are mutually covered to form an accommodation space, and the second electromagnetic elements are arranged in the accommodation space.

[0030] To solve the above technical problems, the second technical solution provided by the present application is to provide a display device, which includes at least one anti-peep assembly, and the anti-peep assembly is the anti-peep assembly described above.

[0031] To solve the above technical problems, the third technical solution provided by the present application is to provide an anti-peep display method, which uses the anti-peep assembly described above, and includes the following steps.

[0032] In response to switching to the anti-peep mode, the magnetic control valve is controlled to be opened for a first preset time length to make the magnetically controlled fluid flow from the second chamber into the first chamber, and the movement state of the magnetically controlled fluid in the first chamber is controlled.

[0033] In response to switching to the non-anti-peep mode, the magnetic control valve is controlled to be opened for a second preset time length to make the magnetically controlled fluid flow from the first chamber into the second chamber.

[0034] In response to switching to the anti-peep mode, the magnetic control valve is controlled to be opened for a first preset time length to make the magnetically controlled fluid flow from the second chamber into the first chamber, and the movement state of the magnetically controlled fluid in the first chamber is controlled.

[0035] In response to switching to the anti-peep mode, the magnetic control valve is controlled to be opened for a first preset time length, and the energization time sequence of the plurality of second electromagnetic elements is controlled to make the magnetically controlled fluid in the second chamber reach a preset position of the first chamber.

[0036] The size of the energization current of the second electromagnetic elements is controlled to make the magnetically controlled fluid reach a target position of the first chamber from the preset position.

[0037] The anti-peep mode includes a full anti-peep mode and / or a local anti-peep mode.

[0038] The size of the energization current of the second electromagnetic elements is controlled to make the magnetically controlled fluid reach a target position of the second chamber from the preset position.

[0039] The size of the energization current of the second electromagnetic elements is controlled multiple times to make the magnetically controlled fluid start from the preset position and reach the target position through at least one transition position in sequence.

[0040] wherein, from the current position to the next position, including:

[0041] synchronously increasing or decreasing the energizing current of the second electromagnetic element of the auxiliary position, so that the magnetically controlled fluid goes straight from the current position to the next position;

[0042] wherein, in the direction parallel to the anti-peep module, the auxiliary position is located at the side of the current position and adjacent to it.

[0043] The beneficial effects of the present application: Unlike the prior art, the present application provides an anti-peep assembly, a display device and an anti-peep display method. The anti-peep assembly has an anti-peep functional area and an edge area located at the side of the anti-peep functional area. The anti-peep assembly includes an anti-peep module, a magnetically controlled fluid and a control module. The anti-peep module has a first chamber located in the anti-peep functional area and a second chamber located in the edge area. The anti-peep module includes a magnetic control valve located in the edge area. The magnetic control valve is used to selectively communicate the first chamber and the second chamber. The magnetically controlled fluid is at least partially disposed in the second chamber. The magnetically controlled fluid is a light shielding material. The control module is used to control the on-off state of the magnetic control valve, and is also used to control the movement state of the magnetically controlled fluid in the first chamber and the second chamber. Through the cooperation of the magnetic control valve and the control module, the magnetically controlled fluid can be controlled to be located in the second chamber of the edge area in the non-anti-peep mode, and the magnetically controlled fluid can be controlled to be located in the first chamber of the anti-peep functional area in the anti-peep mode, so as to realize the rapid switching of the anti-peep or not. At the same time, by controlling the movement state of the magnetically controlled fluid in the first chamber, the anti-peep viewing angle can be adjusted and local anti-peep can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative labor on the basis of these drawings.

[0045] Figure 1 is a structural schematic diagram of an embodiment of the anti-peep assembly provided by the present application;

[0046] Figure 2 is a structural schematic diagram of an embodiment of the anti-peep assembly provided by the present application; Figure 1 is a local enlarged structural schematic diagram of A in

[0047] Figure 3 is a local enlarged structural schematic diagram of A in Figure 1 is a local enlarged structural schematic diagram of the magnetic control valve in B in

[0048] Figure 4 is a local enlarged structural schematic diagram of the magnetic control valve in B in Figure 1 is a local enlarged structural schematic diagram of the magnetic control valve in B in

[0049] Figure 5 is a structural schematic diagram of a first embodiment of a first chamber and a second chamber provided by the present application;

[0050] Figure 6 is a structural schematic diagram of a second embodiment of a first chamber and a second chamber provided by the present application;

[0051] Figure 7 is a structural schematic diagram of a third embodiment of a first chamber and a second chamber provided by the present application;

[0052] Figure 8 is a structural schematic diagram of a fourth embodiment of a first chamber and a second chamber provided by the present application;

[0053] Figure 9 is a schematic diagram of a magnetic control fluid in a motion state in a privacy component provided by the present application;

[0054] Figure 10 is a schematic diagram of a magnetic control fluid in another motion state in a privacy component provided by the present application;

[0055] Figure 11 is a structural schematic diagram of an embodiment of a display device provided by the present application;

[0056] Figure 12 is a flow schematic diagram of an embodiment of a privacy display method provided by the present application;

[0057] Figure 13 is Figure 12 a flow schematic diagram of an embodiment of step S10 in the method;

[0058] Figure 14 is a structural schematic diagram of an initial state of a magnetic control fluid in a display device provided by the present application;

[0059] Figure 15 is Figure 13 a structural schematic diagram corresponding to an embodiment of step S11 in the method;

[0060] Figure 16 is Figure 13 a structural schematic diagram corresponding to a first embodiment of step S12 in the method;

[0061] Figure 17 is Figure 13 a structural schematic diagram corresponding to an embodiment of the magnetic control fluid reaching a transition position in step S12 in the method;

[0062] Figure 18 is Figure 13 a structural schematic diagram corresponding to a second embodiment of step S12 in the method;

[0063] Figure 19 isFigure 13 The structure diagram corresponding to the third embodiment of step S12 is shown in the following figure.

[0064] Figure 20 is Figure 13 The structure diagram corresponding to the fourth embodiment of step S12 is shown in the following figure.

[0065] Explanation of reference numerals:

[0066] 1, privacy component; 001, privacy function area; 002, edge area; 10, privacy module; 101, first cavity; 102, second cavity; 110, magnetically controlled valve; 111, base; 1110, channel; 1120, mounting groove; 112, elastic member; 113, magnetically attractive structure; 120, reflective layer; 130, frame; 131, first frame; 132, second frame; 20, magnetically controlled fluid; 21, light shielding part; 30, control module; 31, first electromagnetic element; 32, control circuit; 33, second electromagnetic element; 34, support structure; 341, first support structure; 342, second support structure; 35, heat conduction layer; 100, display device; 003, display area; 004, frame area; 2, light emitting module; 201, light emitting unit; 3, back plate; 301, bottom plate; 302, side plate; 303, limiting part; 4, support column; 5, optical assembly; 501, quantum dot film; 502, diffusion sheet; 503, prism sheet; 6, display panel; 7, middle frame; 8, outer frame; 9, adhesive; 005, preset position; 006, target position; 007, transition position; 008, auxiliary position; a1 / a2 / a3 / a4, angle. DETAILED DESCRIPTION

[0067] The scheme of the embodiments of the present application will be described in detail below with reference to the accompanying drawings of the specification.

[0068] In the following description, specific details are set forth in order to provide a thorough understanding of the present application. The purpose of the description is to enable one skilled in the art to practice the application without undue experimentation, not to limit the scope of the application.

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

[0070] The terms "first", "second", "third", etc. in the present application are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is 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 the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0071] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0072] Please refer to Figures 1 to 4 , Figure 1 is a structural schematic diagram of an embodiment of the anti-peep assembly provided by the present application, Figure 2 is Figure 1 is a partial enlarged structural schematic diagram of A in Figure 3 is Figure 1 is a partial enlarged structural schematic diagram of the magnetic control valve in the open state at B in Figure 4 is Figure 1 is a partial enlarged structural schematic diagram of the magnetic control valve in the closed state at B in

[0073] The present application provides a kind of privacy component 1, privacy component 1 has privacy function area 001 and the edge area 002 located in the side of privacy function area 001.The privacy component 1 includes privacy module 10, magnetic control fluid 20 and control module 30.The privacy module 10, with the first chamber 101 located in the privacy function area 001 and the second chamber 102 located in the edge area 002.The privacy module 10 includes magnetic control valve 110 located in the edge area 002.Magnetic control valve 110 is used to selectively communicate the first chamber 101 and the second chamber 102.Magnetic control fluid 20, at least part is arranged in the second chamber 102.Magnetic control fluid 20 is light shielding material.Control module 30 is used to control the switching state of magnetic control valve 110, and also be used to control the movement state of magnetic control fluid 20 in the first chamber 101 and the second chamber 102.

[0074] Through the cooperation of magnetic control valve 110 and control module 30, magnetic control fluid 20 can be controlled to be located in the second chamber 102 of the edge area 002 in non-privacy mode, and magnetic control fluid 20 can be controlled in the first chamber 101 located in the privacy function area 001 in privacy mode, to realize the quick switching of whether to prevent sight or not;At the same time, the movement state of magnetic control fluid 20 in the first chamber 101 can be controlled, to adjust the privacy viewing angle and realize local privacy.

[0075] The movement state of magnetic control fluid 20 in the first chamber 101 and the second chamber 102 includes the movement state of magnetic control fluid 20 in the first chamber 101 and / or the movement state of magnetic control fluid 20 in the second chamber 102.

[0076] Movement state includes the static distribution and dynamic distribution of magnetic control fluid 20.For example, magnetic control fluid 20 is at rest in initial state, magnetic control fluid 20 moves back and forth between the first chamber 101 and the second chamber 102, and magnetic control fluid realizes a plurality of position layouts in the first chamber 101 by displacement, etc.

[0077] Specifically, magnetic control fluid 20 is dispersed into a plurality of spaced light shielding parts 21 in the first chamber 101.Magnetic control fluid 20 located in each privacy module 10 is quantitative, and the spacing between light shielding parts 21 formed by dispersing magnetic control fluid 20 and the number of light shielding parts 21 adjust the privacy viewing angle.The smaller the spacing between light shielding parts 21, the smaller the privacy viewing angle.The more the number of light shielding parts 21, the smaller the spacing between light shielding parts 21.

[0078] By controlling the position layout of magnetic control fluid 20 in the first chamber 101, the switching of different privacy viewing angles can be realized, that is, a plurality of privacy requirements, such as local privacy and overall privacy, can be realized.

[0079] In some embodiments, magnetic control fluid 20 includes magnetic rheological fluid.

[0080] Magnetorheological Fluid (MR fluid) is a new type of fluid with controllable flow, which appears black and thus absorbs light so that it cannot pass through. The MR fluid includes two states. Specifically, under a weak magnetic field of about 0-5 mT, the MR fluid is a low-viscosity Newtonian fluid, i.e., a liquid. When an external magnetic field of about 100 mT is applied, the MR fluid appears as a high-viscosity Bingham plastic, i.e., a solid. The MR fluid can freely switch between the liquid and solid states under the action of a magnetic field, with low energy consumption, easy control, and rapid response (millisecond level). At the same time, when the MR fluid is in the liquid state, it can be driven by a high-gradient weak magnetic field to achieve large deformation, smooth navigation, in-situ splitting, fusion, and jumping, and other behaviors.

[0081] When switched to the non-privacy mode, the MR fluid can be transformed into a solid state when isolated in the second chamber 102; when switched to the privacy mode, the MR fluid can be transformed into a solid state after reaching the target position 006.

[0082] The privacy module 10 has an incident light side and an outgoing light side arranged opposite along the thickness direction of the privacy module 10. Light enters from the incident light side, passes through the first chamber 101, and exits from the outgoing light side.

[0083] The magnetic control valve 110 is arranged at least between the first chamber 101 and the second chamber 102 to communicate the first chamber 101 and the second chamber 102 in the privacy mode, so that the MR fluid 20 in the second chamber 102 can flow into the first chamber 101; and isolate the first chamber 101 and the second chamber 102 in the non-privacy mode, so that the MR fluid 20 flowing into the second chamber 102 is limited in the second chamber 102, preventing the MR fluid 20 from entering the first chamber 101 to block the light of the privacy function area 001.

[0084] In some embodiments, the magnetic control valve 110 includes a base 111, an elastic member 112, and a magnetic structure 113. The base 111 surrounds to form a channel 1110, which constitutes at least part of the second chamber 102. The magnetic structure 113 is located between the first chamber 101 and the second chamber 102. In the elastic force direction of the elastic member 112, one end of the elastic member 112 is connected with the magnetic structure 113, and the other end is connected in the base 111.

[0085] When the magnetic control valve 110 is in the open state, the magnetic attraction force acting on the magnetic structure 113 outside the magnetic control valve 110 is less than the elastic force of the elastic member 112 acting on the magnetic structure 113, and the magnetic structure 113 is spaced apart from the base 111, and the first chamber 101 and the second chamber 102 are in communication with each other;

[0086] The magnetic control valve 110 is in a closed state, the magnetic attraction force acting on the magnetically attractive structure 113 outside the magnetic control valve 110 is greater than the elastic force of the elastic member 112 acting on the magnetically attractive structure 113, and the magnetically attractive structure 113 is arranged in contact with the base 111 and at least blocks the port of the channel 1110, so that the first chamber 101 and the second chamber 102 are isolated from each other.

[0087] In some embodiments, the base 111 is a ring structure, and the ring structure surrounds to form a two-way channel 1110, and the two-way channel 1110 constitutes part of the second chamber 102. In other embodiments, the base 111 is a nearly pot structure, and the nearly pot structure surrounds to form a one-way channel 1110, and the one-way channel 1110 is the second chamber 102, and the spout of the nearly pot structure is arranged towards the first chamber 101. In other embodiments, the base 111 can also be other structures, which are not limited here, and can be selected according to actual needs.

[0088] The base 111 comprises a transparent hard material. Exemplarily, the transparent hard material can be PMMA (polymethyl methacrylate). The transparent hard material can also be other transparent high-strength materials.

[0089] The elastic member 112 is used in the magnetic control valve 110 to support the magnetically attractive structure 113, and to provide elastic deformation to ensure that the magnetically attractive structure 113 can be displaced in the elastic direction in response to changes in the magnetic attraction force.

[0090] Exemplarily, the elastic member 112 is a spring or a spring sheet structure.

[0091] In the elastic direction of the elastic member 112, the projection of the magnetically attractive structure 113 on the base 111 covers at least the port of the channel 1110 towards the first chamber 101, so that the magnetically attractive structure 113 can block the channel 1110 when attracted by the magnetic force.

[0092] Exemplarily, the anti-peep function area 001 is a rectangle, and the elastic direction is the long side direction of the anti-peep function area 001, or the elastic direction is the short side direction of the anti-peep function area 001.

[0093] In other embodiments, the elastic direction can also be other directions, for example, the elastic direction is the diagonal direction of the rectangular anti-peep function area 001. The anti-peep function area 001 can also be other shapes.

[0094] The elastic member 112 is at least one.

[0095] Exemplarily, the elastic member 112 is one. The projection of the elastic member 112 on the magnetically-interactive structure 113 is located at or near the middle of the magnetically-interactive structure 113. Compared with connecting the elastic member 112 at the edge of the magnetically-interactive structure 113, the magnetically-interactive structure 113 can be better supported, and the positional deviation of the magnetically-interactive structure 113 in the thickness direction of the anti-peep module 10 due to gravity and the like can be reduced as much as possible, thereby preventing the problem that the magnetically-interactive structure 113 is deviated in position when contacting the base 111, and the sealing effect of the channel 1110 is poor.

[0096] Exemplarily, the elastic member 112 is two. In the thickness direction of the anti-peep module 10, the two elastic members 112 are respectively located at opposite sides of the channel 1110. It should be understood that, when a plurality of elastic members 112 are arranged in parallel to share the same force, the deformation amount of a single elastic member 112 can be reduced, and vice versa, when a plurality of elastic members 112 are arranged in parallel to apply force to the same object, the total force on the object can be increased. By arranging two elastic members 112, when the magnetic control valve 110 is in the open state, the elastic pushing force acting on the magnetically-interactive structure 113 can be increased, so that the magnetically-interactive structure 113 can quickly move away from the base 111, thereby accelerating the communication between the first chamber 101 and the second chamber 102. In addition, compared with arranging one elastic member 112, arranging two elastic members 112 can reduce the positional deviation of the magnetically-interactive structure 113 in the thickness direction of the anti-peep module 10 when the magnetic control valve 110 is in the open state, thereby better supporting the magnetically-interactive structure 113.

[0097] Exemplarily, the elastic member 112 is four. The four elastic members 112 are distributed along the circumference of the channel 1110 to better support the magnetically-interactive structure 113. By arranging four elastic members 112, when the magnetic control valve 110 is in the open state, the communication between the first chamber 101 and the second chamber 102 can be achieved more quickly.

[0098] It should be understood that, compared with arranging four elastic members 112, arranging two elastic members 112 can reduce the magnetic attraction to the magnetically-interactive structure 113 when the magnetic control valve 110 is in the closed state, thereby reducing power consumption.

[0099] Exemplarily, the magnetically-interactive structure 113 can be a metal or alloy such as iron, cobalt, nickel, etc.

[0100] When the magnetic control valve 110 is in the open state, the elastic force acting on the magnetically attractive structure 113 is greater than the magnetic attractive force acting on the magnetically attractive structure 113, the elastic member 112 is in a natural state or a compressed state, and the elastic member 112 partially extends out of the base 111, so that the magnetically attractive structure 113 is arranged in a spaced manner with the base 111, thereby allowing the first chamber 101 and the second chamber 102 to communicate with each other. When the magnetic control valve 110 is in the open state, the elastic member 112 is in a natural state, which can reduce the magnetic attractive force acting on the magnetically attractive structure 113 or even eliminate the need to apply a magnetic attractive force to the magnetically attractive structure 113, thereby reducing power consumption.

[0101] When the magnetic control valve 110 is in the closed state, the magnetically attractive structure 113 is attracted by the magnetic force and compresses the elastic member 112, and the elastic member 112 is entirely arranged in the base 111, so that the magnetically attractive structure 113 is arranged in contact with the base 111 and at least blocks the port of the passage 1110 towards the first chamber 101, thereby isolating the first chamber 101 and the second chamber 102.

[0102] In some embodiments, the base 111 has a mounting groove 1120 on the side facing the first chamber 101, and the elastic member 112 is at least partially arranged in the mounting groove 1120. When the magnetic control valve 110 is in the closed state, the magnetically attractive structure 113 blocks the port of the passage 1110 towards the first chamber 101 and the slot of the mounting groove 1120.

[0103] When the magnetic control valve 110 is in the open state, the elastic member 112 is partially arranged in the mounting groove 1120 and partially extends out of the mounting groove 1120. When the magnetic control valve 110 is in the closed state, the elastic member 112 is entirely arranged in the mounting groove 1120 in a compressed state.

[0104] The slot of the mounting groove 1120 is arranged towards the first chamber 101.

[0105] Exemplarily, in the thickness direction of the privacy protection module 10, the cross section of the mounting groove 1120 is rectangular. In other embodiments, the mounting groove 1120 can have other shapes.

[0106] Exemplarily, the mounting groove 1120 communicates with the passage 1110, that is, the magnetically attractive structure 113 must be able to block the port of the passage 1110 towards the first chamber 101 and the slot of the mounting groove 1120 when the magnetic control valve 110 is in the closed state, so as to isolate the first chamber 101 and the second chamber 102.

[0107] Exemplarily, the installation groove 1120 is spaced apart from the channel 1110, i.e., the magnetophilic structure 113 can selectively block the port of the channel 1110 towards the first chamber 101 when the magnetic control valve 110 is in the closed state. In the elastic force direction of the elastic member 112, the projection of the magnetophilic structure 113 on the base 111 covers the port of the channel 1110 towards the first chamber 101 and the slot of the installation groove 1120, which can simplify the structural design of the magnetic control valve 110.

[0108] Exemplarily, in the elastic force direction of the elastic member 112, the projection area of the magnetophilic structure 113 on the base 111 is greater than the sum of the port area of the channel 1110 towards the first chamber 101 and the slot area of the installation groove 1120, so as to better isolate the first chamber 101 and the second chamber 102.

[0109] Please refer to Figures 1 to 8 , Figure 5 is a structural schematic diagram of a first embodiment of the first chamber and the second chamber provided by the present application, Figure 6 is a structural schematic diagram of a second embodiment of the first chamber and the second chamber provided by the present application, Figure 7 is a structural schematic diagram of a third embodiment of the first chamber and the second chamber provided by the present application, Figure 8 is a structural schematic diagram of a fourth embodiment of the first chamber and the second chamber provided by the present application.

[0110] In some embodiments, the magnetic control valve 110 is arranged one-to-one with the second chamber 102. Wherein, the second chamber 102 is one, and is located on one side of the first chamber 101 along the elastic force direction; or, the second chamber 102 is multiple, and the multiple second chambers 102 are arranged side by side and located on one side of the first chamber 101 along the elastic force direction; or, the second chamber 102 is multiple, and the multiple second chambers 102 are respectively located on opposite sides of the first chamber 101 along the elastic force direction.

[0111] The number of the magnetic control valve 110 is equal to the number of the second chamber 102.

[0112] When the first chamber 101 has multiple second chambers 102 on one side along the elastic force direction, the multiple second chambers 102 are arranged side by side along a preset direction. The preset direction is perpendicular to the elastic force direction and perpendicular to the thickness direction of the anti-peep module 10.

[0113] The first chamber 101 corresponds to at least one second chamber 102. The first chamber 101 and the corresponding second chamber 102 are selectively communicated.

[0114] Exemplarily, as shown in Figure 5 , the first chamber 101 corresponds to one second chamber 102, and the second chamber 102 is located on one side of the first chamber 101 along the elastic force direction.

[0115] Exemplarily, the first chamber 101 corresponds to two second chambers 102, and the two second chambers 102 are located on one side of the first chamber 101 along the elastic direction (see Figure 6 ); or, the two second chambers 102 are respectively located on opposite sides of the first chamber 101 along the elastic direction (see Figure 7 ).

[0116] Exemplarily, the first chamber 101 corresponds to at least three second chambers 102, and all the second chambers 102 are located on one side of the first chamber 101 along the elastic direction; or, part of the second chambers 102 are located on one side of the first chamber 101 along the elastic direction, and the other part of the second chambers 102 are located on the other side of the first chamber 101 along the elastic direction (see Figure 8 ).

[0117] The first chamber 101 is multiple and / or the second chamber 102 is multiple, which can more accurately control the distribution state of the magnetically controlled fluid 20 in the privacy function area 001, so as to more accurately adjust the privacy viewing angle according to the privacy requirement.

[0118] In some embodiments, the privacy module 10 further comprises a reflective layer 120, which comprises: a reflective coating arranged on the surface of the magnetic control valve 110 close to the first chamber 101; and / or a reflective coating arranged on the light-incident side surface of the privacy module 10 and located in the edge area 002.

[0119] The reflective coating arranged on the surface of the magnetic control valve 110 close to the first chamber 101 can improve the utilization rate of light incident in the first chamber 101, thereby enhancing the display effect.

[0120] The reflective coating arranged on the light-incident side surface of the privacy module 10 and located in the edge area 002 can reflect the light irradiated to the edge area 002 of the light-incident side, thereby improving the utilization rate of light incident to the light-incident side of the privacy module 10.

[0121] Specifically, the surface of the magnetic control valve 110 close to the light-incident side of the privacy module 10 is provided with a reflective coating, and the surface of the base 111 close to the light-incident side of the privacy module 10 is provided with a reflective coating.

[0122] Here, the material of the reflective layer 120 is not limited and can be selected according to actual requirements.

[0123] In some embodiments, the privacy module 10 further comprises a frame 130 having transparency and insulation. The frame 130 comprises a first frame 131 for forming the first chamber 101 and a second frame 132 for forming the second chamber 102, and the magnetic control valve 110 is disposed between the first frame 131 and the second frame 132; or, the base 111 of the magnetic control valve 110 surrounds to form the second chamber 102, and the frame 130 is used to form the first chamber 101; or, the magnetic control valve 110 is disposed in the frame 130, and the frame 130 surrounds a space to divide the space into the first chamber 101 and the second chamber 102.

[0124] The frame 130 comprises a transparent homogeneous material. Exemplarily, the transparent homogeneous material can be PMMA. The transparent homogeneous material can also be other transparent materials.

[0125] Exemplarily, the privacy module 10 has a rectangular structure. In the thickness direction of the privacy module 10, the cross sections of the first chamber 101 and the second chamber 102 are both rectangular.

[0126] Exemplarily, the privacy module 10 has an L-shaped structure or a U-shaped structure. In the thickness direction of the privacy module 10, the cross section of the first chamber 101 is rectangular, and the cross section of the second chamber 102 is L-shaped.

[0127] Exemplarily, the frame 130 comprises a first frame 131 for forming the first chamber 101 and a second frame 132 for forming the second chamber 102, and the magnetic control valve 110 is disposed between the first frame 131 and the second frame 132. Specifically, the first frame 131 cooperates with the base 111 of the magnetic control valve 110 to surround and form the first chamber 101, and the second frame 132 cooperates with the base 111 of the magnetic control valve 110 to surround and form the second chamber 102.

[0128] Exemplarily, the base 111 of the magnetic control valve 110 surrounds to form the second chamber 102, and the frame 130 is used to form the first chamber 101. The frame 130 cooperates with the base 111 of the magnetic control valve 110 to surround and form the first chamber 101.

[0129] In some embodiments, the control module 30 comprises a control circuit 32 and a first electromagnetic element 31, and the control circuit 32 controls the switching state of the magnetic control valve 110 by controlling the energization state of the first electromagnetic element 31. The first electromagnetic element 31 is disposed on the side of the magnetic control valve 110 away from the first chamber 101 and at least partially opposite to the magnetically permeable structure 113.

[0130] The structure and position of the control circuit 32 are not limited here and can be selected according to actual needs.

[0131] The energized state includes the energized current size, the current direction, the energized time, and whether to be energized, etc.

[0132] The first electromagnetic element 31 is controlled to release or attract the magnetic structure 113 by controlling the energized current size.

[0133] Specifically, in response to the magnetic force generated by the first electromagnetic element 31 (i.e., the magnetic attraction force acting on the elastic member 112 in the above description) being greater than the elastic force of the elastic member 112, the magnetic structure 113 is displaced towards the direction close to the base 111 until the magnetic structure 113 is in contact with the base 111 and blocks the passage 1110, and the magnetic control valve 110 is in a closed state.

[0134] In response to the magnetic force generated by the first electromagnetic element 31 being less than the elastic force of the elastic member 112, the magnetic structure 113 is repelled by the elastic member 112 and displaced towards the direction away from the base 111, and the magnetic control valve 110 is in an open state.

[0135] In the elastic force direction, the first electromagnetic element 31 is at least partially opposite to the magnetic structure 113, which can make the first electromagnetic element 31 better attract the magnetic structure 113 and also reduce power consumption. It can be understood that, in the elastic force direction, the first electromagnetic element 31 and the magnetic structure 113 are at least partially overlapped.

[0136] Exemplarily, in the thickness direction of the anti-peep module 10, the cross section of the first electromagnetic element 31 is greater than the cross section of the magnetic structure 113. It can be understood that, in the elastic force direction, the projection of the magnetic structure 113 on the first electromagnetic element 31 is located in the first electromagnetic element 31 and is spaced apart from at least part of the edge of the first electromagnetic element 31.

[0137] In some embodiments, the magnetic control valve 110 can be cooperated with the first electromagnetic element 31 to form a second cavity 102.

[0138] In some embodiments, the first electromagnetic element 31 is a permanent magnet with a coil.

[0139] Specifically, when the anti-peep mode is started, the coil of the first electromagnetic element 31 is energized and the current direction and size are controlled, so that the magnetic field direction generated by the current in the coil is opposite to the magnetic field direction of the permanent magnet itself and the intensity is equal, so as to offset the magnetic field of the permanent magnet. At this time, the elastic force of the elastic member 112 acting on the magnetic structure 113 is greater than the magnetic attraction force of the first electromagnetic element 31 acting on the magnetic structure 113, the magnetic structure 113 is repelled by the elastic member 112, and the magnetic control valve 110 is in an open state.

[0140] When the non-peep mode is started, the coil of the first electromagnetic element 31 is powered off, the magnetic attraction force of the permanent magnet acting on the magnetically- attractive structure 113 is greater than the elastic force of the elastic member 112 acting on the magnetically- attractive structure 113, at this time, the magnetically- attractive structure 113 is tightly closed to the base 111 to block the second chamber 102, and the magnetic control valve 110 is in the closed state.

[0141] In the non-peep mode, the coil in the first electromagnetic element 31 does not need to be powered on, which can reduce power consumption.

[0142] In some embodiments, the first electromagnetic element 31 is an electromagnet.

[0143] For example, the electromagnet is composed of a coil and a core (or no core).

[0144] Specifically, when the peep mode is started, the coil in the first electromagnetic element 31 is powered on and the current is controlled to make the elastic force of the elastic member 112 acting on the magnetically- attractive structure 113 greater than the magnetic attraction force of the first electromagnetic element 31 acting on the magnetically- attractive structure 113, the magnetically- attractive structure 113 is pushed away by the elastic member 112, and the magnetic control valve 110 is in the open state.

[0145] When the non-peep mode is started, the coil in the first electromagnetic element 31 is powered on and the current is controlled to make the elastic force of the elastic member 112 acting on the magnetically- attractive structure 113 less than the magnetic attraction force of the first electromagnetic element 31 acting on the magnetically- attractive structure 113, at this time, the magnetically- attractive structure 113 is tightly closed to the base 111 to block the second chamber 102, and the magnetic control valve 110 is in the closed state.

[0146] It should be understood that, compared with the embodiment in which the first electromagnetic element 31 is an electromagnet, when the first electromagnetic element 31 is a permanent magnet with a coil, the permanent magnet itself can be used to attract the magnetically- attractive structure 113, which can reduce the power-on time of the coil, thereby reducing power consumption and heat.

[0147] In some embodiments, the control module 30 further comprises a plurality of second electromagnetic elements 33 arranged at intervals, and the control circuit 32 controls the movement state of the magnetic control fluid 20 in the first chamber 101 and the second chamber 102 by controlling the power-on state of the second electromagnetic elements 33. The second electromagnetic elements 33 are arranged on the light-in side of the peep-proof module 10, or the second electromagnetic elements 33 are arranged on the light-out side of the peep-proof module 10.

[0148] The plurality of second electromagnetic elements 33 work independently, so that the power-on states of the plurality of second electromagnetic elements 33 can be different, thereby controlling the movement state of the magnetic control fluid 20 in the first chamber 101.

[0149] Some of the second electromagnetic elements 33 are arranged in the edge area 002, and some of the second electromagnetic elements 33 are arranged in the peep-proof functional area 001.

[0150] In some embodiments, each first chamber 101 corresponds to at least 8 second electromagnetic elements 33 in the elastic direction. Each second chamber 102 corresponds to at least one first electromagnetic element 31.

[0151] The second electromagnetic elements 33 are used to control the movement state of the magnetically controlled fluid 20 in the corresponding first chamber 101 or the corresponding second chamber 102.

[0152] Exemplarily, the second electromagnetic elements 33 arranged in the edge area 002 are used to control the movement of the magnetically controlled fluid 20 from the first chamber 101 to the second chamber 102. In the non-privacy mode, the magnetic control valve 110 is first opened and then closed. When switching to the non-privacy mode, the energization state of the first electromagnetic element 31 is first controlled to make the magnetic control valve 110 in the open state, and then the energization state (e.g., energization time and energization size) of the second electromagnetic element 33 located in the edge area 002 is controlled to make the magnetically controlled fluid 20 move from the first chamber 101 to the second chamber 102, and then the energization state of the first electromagnetic element 31 is controlled to make the magnetic control valve 110 in the closed state, so as to isolate the magnetically controlled fluid 20 in the second chamber 102, thereby reducing the display influence on the privacy function area 001.

[0153] The second electromagnetic elements 33 arranged in the privacy function area 001 are used to control the movement state of the magnetically controlled fluid 20 in the first chamber 101. In the privacy mode, the magnetic control valve 110 is first opened and then closed. When switching to the privacy mode, the energization state of the first electromagnetic element 31 is first controlled to make the magnetic control valve 110 in the open state, and then the energization state of the second electromagnetic element 33 located in the privacy function area 001 is controlled to make the magnetically controlled fluid 20 move from the second chamber 102 to the first chamber 101, and then the energization state of the first electromagnetic element 31 is controlled to make the magnetic control valve 110 in the closed state, so as to isolate the magnetically controlled fluid 20 in the first chamber 101, thereby reducing the working time of the first electromagnetic element 31 and reducing power consumption.

[0154] It should be understood that when switching to the privacy mode, the magnetic control valve 110 can not be closed after the magnetically controlled fluid 20 moves from the second chamber 102 to the first chamber 101.

[0155] In some embodiments, the second electromagnetic elements 33 are soft magnets with coils.

[0156] Exemplarily, the soft magnets include materials such as iron-silicon alloy. The soft magnets can be obtained by mechanical processing or the like to obtain a shape meeting the expected shape and position tolerances.

[0157] Specifically, in the soft magnet around the coil, before the coil is powered, the soft magnet has no magnetism, after the coil is powered, the originally non-magnetic soft magnet is magnetized to have magnetism, the direction and strength of magnetization depend on the direction and size of the current through the coil.

[0158] Please refer to Figures 1 to 10 , Figure 9 is a schematic view of the magnetic control fluid in a motion state in the anti-peep assembly provided by the present application, Figure 10 is a schematic view of the magnetic control fluid in another motion state in the anti-peep assembly provided by the present application.

[0159] Exemplarily, when switching to the anti-peep mode, the coil in the second electromagnetic element 33 is powered to control the magnetic control fluid 20 to flow from the second chamber 102 to the first chamber 101 and control the motion state of the magnetic control fluid 20 in the first chamber 101. Specifically, in the direction from the second chamber 102 to the first chamber 101, the coil in the second electromagnetic element 33 is powered in sequence according to the anti-peep mode to make the magnetic field move from the second chamber 102 to the first chamber 101, thereby generating a high-gradient weak magnetic field to attract the magnetic control fluid 20 in the second chamber 102 to flow into the preset position 005 (see Figure 9 ) in the first chamber 101. After the magnetic control fluid 20 moves to the expected position in the first chamber 101, the currents in the corresponding second electromagnetic elements 33 on the opposite sides of the magnetic control fluid 20 in the elastic direction are increased synchronously, so that the magnetic control fluid 20 is evenly divided by the magnetic field attraction at both ends, and then the high-gradient weak magnetic field is used to make the divided magnetic control fluid 20 be attracted to move to the next preset position 005 (see Figure 10 ). Similarly, by synchronously reducing the currents in the corresponding second electromagnetic elements 33 on the opposite sides of the magnetic control fluid 20 in the elastic direction, the aggregation of the magnetic control fluid 20 can be realized. By repeating the above control, the continuous movement, division, refinement and aggregation of the magnetic control fluid 20 in the second chamber 102 can be realized, and then various anti-peep requirements can be adapted.

[0160] When switching to the non-anti-peep mode, the operation of switching to the anti-peep mode is performed in reverse, and the initial state is restored. The initial state is that the magnetic control fluid 20 is isolated in the second chamber 102. Specifically, the coil in the second electromagnetic element 33 is powered to control the magnetic control fluid 20 to flow from the first chamber 101 to the second chamber 102, and then the second electromagnetic element 33 is powered off, which can reduce the working time of the coil in the non-anti-peep mode, thereby reducing the power consumption.

[0161] The soft magnet has low coercivity, is easy to magnetize and demagnetize, and can be applied to high-frequency switching application scenarios, that is, the magnetic field can be quickly changed, thereby accelerating the movement state of the magnetorheological fluid 20 in the second chamber 102 and the chamber, and the soft magnet can be quickly switched for different privacy protection requirements. In addition, the hysteresis loop of the soft magnet is narrow, and the hysteresis loss is small, which is beneficial to improve energy efficiency. In addition, the soft magnet is generally manufactured by sheet or powder metallurgy technology, which can effectively reduce eddy current loss and be suitable for high-frequency applications.

[0162] In other embodiments, the second electromagnetic element 33 can be an electromagnet.

[0163] It should be understood that the soft magnet with a coil wound thereon is selected as the second electromagnetic element 33, which not only can be applied to the quick switching for different privacy protection requirements, but also can reduce energy consumption.

[0164] In some embodiments, the control module 30 further includes a support structure 34 and a heat-conducting layer 35, the support structure 34 and the heat-conducting layer 35 are mutually covered to form an accommodation space, and the second electromagnetic element 33 is arranged in the accommodation space.

[0165] For example, the support structure 34 includes a first support structure 341 and a second support structure 342, the second support structure 342 is arranged at the end of the first support structure 341 close to the heat-conducting layer 35, and the first support structure 341 and the second support structure 342 jointly form a U-shaped structure.

[0166] The support structure 34 includes a hard insulating material. For example, the hard insulating material is PEKK or the like.

[0167] In the thickness direction of the privacy protection module 10, the first support structure 341 and the second support structure 342 are arranged opposite to each other.

[0168] The heat-conducting layer 35 includes a non-magnetic heat-conducting material. For example, the non-magnetic heat-conducting material is heat-conducting silica gel.

[0169] For example, the second electromagnetic element 33 is arranged on one side surface of the heat-conducting layer 35, so that the heat-conducting layer 35 can dissipate heat for the second electromagnetic element 33.

[0170] Please refer to Figures 1 to 11 , Figure 11 is a structural schematic diagram of an embodiment of the display device provided in the present application.

[0171] The present application provides a display device 100. The display device 100 includes at least one privacy protection assembly 1. The privacy protection assembly 1 is the above-mentioned privacy protection assembly 1.

[0172] The display device 100 has a display area 003 and a frame area 004.

[0173] The privacy function area 001 of the privacy assembly 1 is located in the display area 003, and the edge area 002 of the privacy assembly 1 is located in the frame area 004.

[0174] Exemplarily, the privacy assembly 1 is one, and the privacy function area 001 and the display area 003 are arranged in overlap in the thickness direction of the privacy assembly 1 (i.e., the thickness direction of the privacy module 10).

[0175] Exemplarily, the privacy assembly 1 is multiple, and the multiple privacy assemblies 1 are arranged side by side along a preset direction. The multiple privacy assemblies 1 work independently, and can achieve multiple privacy requirements, such as multiple local privacy viewing angles. Specifically, the display area 003 is divided into multiple sub-areas, and some sub-areas can be privacy displayed, and some sub-areas can be normally displayed. The privacy viewing angles between the sub-areas for privacy display can be the same or different.

[0176] The multiple privacy assemblies 1 are arranged, so that when a certain privacy assembly 1 is abnormal, the abnormal privacy assembly 1 can be quickly replaced, without the need to replace all the privacy assemblies 1, thereby saving materials.

[0177] In some embodiments, the privacy assembly 1 is at least five, so as to better achieve local dynamic privacy.

[0178] The display device 100 further includes a light emitting module 2. The light emitting module 2 is located on the light incident side of the privacy module 10, and is configured to provide incident light for the privacy module 10.

[0179] Exemplarily, the display device 100 is an OLED (Organic Light-Emitting Diode), an LED (Light Emitting Diode), a direct type LCD (Liquid Crystal Display), or an edge type LCD, and corresponding flat screens and curved screens.

[0180] In some embodiments, the second electromagnetic element 33 is located on the light emitting side of the privacy module 10, and the projection of the second electromagnetic element 33 on the light emitting module 2 is located between the light emitting units 201 in the light emitting module 2, so as to reduce the shielding of light.

[0181] In other embodiments, the second electromagnetic element 33 is located on the light incident side of the privacy module 10. The arrangement position of the second electromagnetic element 33 can be selected according to the position layout of the light emitting module 2 and the second electromagnetic element 33. For example, if the second electromagnetic element 33 is located on the light path of the light emitted from the light emitting module 2 to the privacy module 10, the second electromagnetic element 33 is arranged corresponding to the non-pixel area in the display area 003 of the display device 100, so as to avoid shielding the light of the pixel area in the display area 003, and affecting the privacy display effect. The pixel area is used for displaying images.

[0182] Exemplarily, the display device 100 is taken as a direct type LCD for example.

[0183] Specifically, the display device 100 further comprises a back plate 3, a support column 4 and an optical assembly 5. The heat-conducting layer 35 is arranged on the bottom plate 301 of the back plate 3, and the light-emitting module 2 is located on the side surface of the support structure 34 away from the heat-conducting layer 35. The support column 4 is located between the light-emitting module 2 and the optical assembly 5.

[0184] The support column 4 is used to strengthen the stability of the internal structure of the display device 100, preventing deformation or damage caused by external pressure.

[0185] The optical assembly 5 comprises various optical film layers, mainly used to improve light efficiency, uniformity and display quality.

[0186] Exemplarily, the optical assembly 5 comprises a quantum dot film 501, a diffusion sheet 502 and a prism sheet 503 arranged in sequence. The function and specific structure of the optical assembly 5 are not limited here, and can be selected according to actual needs.

[0187] The anti-peep module 10 is located on the side of the optical assembly 5 away from the second electromagnetic element 33.

[0188] In some embodiments, the second electromagnetic element 33 is arranged in a spaced manner with the light-emitting unit 201 in the light-emitting module 2 in the direction parallel to the plane of the light-emitting module 2, so as to reduce the concentration of heat and prolong the service life of the display device 100.

[0189] The display device 100 further comprises a display panel 6, a middle frame 7 and an outer frame 8. The display panel 6 is located on the side of the anti-peep module 10 away from the second electromagnetic element 33.

[0190] The middle frame 7 is located between the display panel 6 and the outer frame 8, and plays a role of connection and support. It not only provides physical support for the display panel 6, but also helps to fix the internal components.

[0191] The outer frame 8 is the outermost part of the display device 100, mainly used to protect the internal components from the external environment, such as collision, dust and moisture, etc. At the same time, it also provides structural stability to the whole device.

[0192] The anti-peep module 10 is arranged on the side of the optical assembly 5 away from the support column 4, and abuts against the limiting part 303 of the side plate 302 of the back plate 3, so as to facilitate installation. The limiting part 303 is located on the side of the side plate 302 facing the support column 4, so as to support the optical assembly 5. Specifically, the second cavity 102 is in an L-shaped structure.

[0193] The display device 100 further comprises an adhesive 9, which is used to bond the display panel 6 and the middle frame 7.

[0194] Please refer to Figures 1 to 16 , Figure 12 is a flowchart of an embodiment of step S10 in the method for preventing display from being viewed by others provided in the present application, Figure 13 is Figure 12 a flowchart of an embodiment of step S10 in the method for preventing display from being viewed by others provided in the present application, Figure 14 is a structural diagram of the initial state of the magnetic fluid in the display device provided in the present application, Figure 15 is Figure 13 a structural diagram corresponding to an embodiment of step S11 in the method for preventing display from being viewed by others provided in the present application, Figure 16 is Figure 13 a structural diagram corresponding to an embodiment of step S12 in the method for preventing display from being viewed by others provided in the present application.

[0195] The present application provides a method for preventing display from being viewed by others. The method for preventing display from being viewed by others adopts the above-mentioned privacy protection assembly 1. The method for preventing display from being viewed by others is applied to the display device 100.

[0196] The method for preventing display from being viewed by others specifically comprises:

[0197] S10: in response to switching to the privacy protection mode, controlling the magnetic control valve 110 to be opened for a first preset time duration to make the magnetic fluid 20 flow from the second chamber 102 into the first chamber 101, and controlling the motion state of the magnetic fluid 20 in the first chamber 101.

[0198] Specifically, in response to switching to the privacy protection mode, the magnetic control valve 110 is controlled to be opened for a first preset time duration to make the magnetic fluid 20 flow from the second chamber 102 into the first chamber 101, and after the magnetic fluid 20 flows into the first chamber 101 completely, the magnetic control valve 110 is closed to isolate the magnetic fluid 20 in the second chamber 102. Then, the motion state of the magnetic fluid 20 in the first chamber 101 is controlled according to the privacy protection requirement.

[0199] Here, the first preset time duration is not limited and is selected according to the actual requirement.

[0200] In some embodiments, step S10 comprises:

[0201] S11: in response to switching to the privacy protection mode, controlling the magnetic control valve 110 to be opened for a first preset time duration, and controlling the energization time sequence of the plurality of second electromagnetic elements 33 to make the magnetic fluid 20 in the second chamber 102 reach a preset position 005 in the first chamber 101.

[0202] The magnetic control valve 110 is controlled to open to allow the first chamber 101 to communicate with the second chamber 102. In the direction of the magnetic control fluid 20 from the second chamber 102 to the first chamber 101, the coils in the second electromagnetic element 33 are sequentially supplied with a timed current according to the anti-peep mode to move the magnetic field in the direction from the second chamber 102 to the first chamber 101, thereby generating a high-gradient weak magnetic field to attract the magnetic control fluid 20 in the second chamber 102 to flow into the preset position 005 in the first chamber 101.

[0203] The preset position 005 can be selected according to the anti-peep requirement and the structure of the anti-peep module 10. The number of the preset position 005 is at least one.

[0204] Exemplarily, the preset position 005 is one, and each anti-peep module 10 includes one first chamber 101 and one second chamber 102. The preset position 005 can be any position in the first chamber 101, which is selected according to the anti-peep requirement.

[0205] Exemplarily, the preset position 005 is two, and each anti-peep module 10 includes one first chamber 101 and two second chambers 102. The two second chambers 102 are located on opposite sides of the first chamber 101 in the elastic direction. The two preset positions 005 can be symmetrically arranged or asymmetrically arranged.

[0206] S12: Control the size of the current supplied to the second electromagnetic element 33 to make the magnetic control fluid 20 move from the preset position 005 to the target position 006 in the first chamber 101.

[0207] After the magnetic control fluid 20 moves to the expected position in the first chamber 101, the currents in the corresponding second electromagnetic elements 33 on the opposite sides of the magnetic control fluid 20 in the elastic direction are simultaneously increased, so that the magnetic control fluid 20 is uniformly divided by the magnetic field far away from both ends, and then the high-gradient weak magnetic field is used to attract the uniformly divided magnetic control fluid 20 to move to the next position. Similarly, by simultaneously reducing the currents in the corresponding second electromagnetic elements 33 on the opposite sides of the magnetic control fluid 20 in the elastic direction, the magnetic control fluid 20 can be aggregated. By repeating the above control until the target position 006 is reached, the magnetic control fluid 20 can be continuously moved, divided, refined, and aggregated in the first chamber 101, thereby adapting to various anti-peep requirements.

[0208] In some embodiments, the anti-peep mode includes a full anti-peep mode and / or a local anti-peep mode. Step S12: controlling the size of the current supplied to the second electromagnetic element 33 to make the magnetic control fluid 20 move from the preset position 005 to the target position 006 in the first chamber 101, includes: controlling the size of the current supplied to the second electromagnetic element 33 multiple times to make the magnetic control fluid 20 move from the preset position 005 to the target position 006 through at least one transition position 007.

[0209] During the process of the magnetron fluid 20 reaching the target position 006 from the preset position 005 , the magnetron fluid 20 undergoes multiple position changes.

[0210] It should be understood that the magnetron fluid 20 can also directly reach the target position 006 from the preset position 005 .

[0211] Reaching the next position from the current position includes: synchronously increasing or decreasing the current of the second electromagnetic element 33 of the auxiliary position 008, so that the magnetron fluid 20 moves directly from the current position to the next position; wherein, in a direction parallel to the anti-peeping module 10, the auxiliary position 008 is located on the side and adjacent to the current position.

[0212] The current position is the position where the magnetron fluid 20 is suspended within the first chamber 101 at a given moment. The current position can be the preset position 005 or the transition position 007. The current position can be multiple or one. For example, if the magnetron fluid 20 forms a single light shielding portion 21, the current position is one; for another example, if the magnetron fluid 20 is dispersed to form multiple light shielding portions 21, the current position can be multiple.

[0213] The next position may be a transition position 007 or a target position 006. The next positions may be multiple or one.

[0214] During the splitting or aggregation of the magnetoresistive fluid, at the current moment, the number of the shading portions 21 is equal to the number of the current positions. For example, at the current moment, the magnetoresistive fluid 20 is located at the preset position 005, and the number of the shading portions 21 included in the magnetoresistive fluid 20 is equal to the number of the preset positions 005. The magnetoresistive fluid 20 moves directly from the preset position 005 to the first transition position 007. The current position refers to the preset position 005, and the next position refers to the first transition position 007.

[0215] By synchronously increasing the current of the second electromagnetic element 33 at the auxiliary position 008 , the magnetron fluid 20 at the current position can be evenly distributed.

[0216] By synchronously reducing the current of the second electromagnetic element 33 at the auxiliary position 008 , the magnetron fluid 20 at the current position can be aggregated.

[0217] The current of the second electromagnetic element 33 at the auxiliary position 008 is synchronously increased or decreased to achieve position change of the magnetron fluid 20, thereby achieving different anti-peeping viewing angles.

[0218] When switching to the anti-peeping mode, the control logic of the first electromagnetic element 31 and the second electromagnetic element 33 is as follows:

[0219] At the transition moment from the non-peep-proof mode to the peep-proof mode, the magnetic control fluid 20 is isolated in the second chamber 102, and the first electromagnetic element 31 and the second electromagnetic element 33 are both stopped working;

[0220] First, the first electromagnetic element 31 is controlled to work to control the magnetic control valve 110 to open; then the second electromagnetic element 33 is controlled to work to control the magnetic control fluid 20 to flow from the second chamber 102 to the first chamber 101;

[0221] After the magnetic control fluid 20 flows into the first chamber 101 completely, then the first electromagnetic element 31 is controlled to stop working, the first electromagnetic element 31 is continuously controlled to work to control the magnetic control valve 110 to close, the magnetic control fluid is isolated in the first chamber 101, and the second electromagnetic element 33 is continuously controlled to work to control the motion state of the magnetic control fluid 20 in the second chamber 102.

[0222] Next, an example is taken that each peep-proof module 10 includes one first chamber 101 and two second chambers 102 located at opposite ends of the first chamber 101, the second electromagnetic element 33 is 10, the magnetic control fluid 20 is a magnetic rheological fluid, and the first electromagnetic element 31 is a permanent magnet with a coil.

[0223] Please refer to Figures 1 to 20 , Figure 17 is Figure 13 is a structural schematic diagram corresponding to the first embodiment of the magnetic control fluid reaching the transition position in step S12, Figure 18 is Figure 13 is a structural schematic diagram corresponding to the second embodiment of step S12, Figure 19 is Figure 13 is a structural schematic diagram corresponding to the third embodiment of step S12, Figure 20 is Figure 13 is a structural schematic diagram corresponding to the fourth embodiment of step S12.

[0224] In the first embodiment: the transition position 007 is zero.

[0225] When switching to the full privacy mode, the first electromagnetic element 31 is powered on, so that the magnetic force of the permanent magnet is temporarily offset, the compression force of the elastic member 112 > the magnetic attraction force, the magnetic control valve 110 is opened, and the magnetic fluid can flow from the second chamber 102 into the first chamber 101 due to the loss of the high magnetic field constraint. When the magnetic fluid flows out of the second chamber 102, the first electromagnetic element 31 is powered off, and at this time the compression force of the elastic member 112 < the magnetic attraction force, the magnetic control valve 110 is closed, and the magnetic fluid is attracted to the transition position 007.

[0226] After the magnetic fluid moves to the preset position 005 (at this time, the light shielding part 21 is two), the electric current of the second electromagnetic element 33 on both sides of the elastic force direction of the magnetic fluid is increased synchronously to enhance the magnetic field, so that the magnetic fluid is evenly divided by the magnetic field on both sides.

[0227] After the magnetic fluid moves to the target position 006, the second electromagnetic element 33 is powered on with a larger current, so that the soft magnetic body obtains a high magnetic field, and the magnetic fluid changes into a solid state, so that the movement of the display device does not affect the privacy display effect. At this time, the privacy viewing angle is a1.

[0228] If the privacy mode is not needed to be turned on, the previous steps are reversed to restore the initial state. In this way, in the non-privacy mode, the display effect is not affected, and a better experience is obtained.

[0229] In the second embodiment, the transition position 007 is one.

[0230] After the magnetic fluid moves to the preset position 005 (at this time, the light shielding part 21 is two), the electric current of the second electromagnetic element 33 on both sides of the elastic force direction of the magnetic fluid is increased synchronously to enhance the magnetic field, so that the magnetic fluid is evenly divided by the magnetic field on both sides.

[0231] After the MR fluid moves to the transition position 007, the current of the second electromagnetic element 33 on both sides of the elastic direction of the MR fluid is simultaneously increased to enhance the magnetic field, so that the MR fluid is again evenly divided under the attraction of the far-end magnetic field (at this time, the light shielding part 21 is eight). Then, the MR fluid after the division is attracted and moved to the target position 006 by using a high-gradient weak magnetic field.

[0232] After the MR fluid moves to the target position 006, a greater current is supplied to the second electromagnetic element 33 to make the soft magnetic body obtain a high magnetic field, so that the MR fluid is converted into a solid state, and then the movement of the device does not affect the privacy display effect. At this time, the privacy viewing angle is a2, and a1>a2.

[0233] It should be understood that when switching to the full privacy mode, the MR fluid starts from the initial position and can pass through multiple transition positions 007 to reach the target position 006. Specifically, the MR fluid can be divided or aggregated multiple times to achieve the change of multiple privacy viewing angles, which is more intelligent and practical.

[0234] In the third embodiment: the transition position 007 is zero.

[0235] When switching to the local privacy mode, the local privacy area is determined, and the preset position 005 and the target position 006 are located in the local privacy area. The MR fluid in the two second chambers 102 flows into the first chamber 101 for privacy display. The MR fluid is sequentially moved from the second chamber 102 to the preset position 005 and then to the target position 006. At this time, the privacy viewing angle is a3, the non-privacy viewing angle is a4, a4>a1>a2>a3, and the privacy viewing angle can be further reduced, while the non-privacy viewing angle is consistent with the conventional use viewing angle of the Mini LED (Mini Light Emitting Diode), which is about 140°.

[0236] In the fourth embodiment: the transition position 007 is zero.

[0237] When switching to the local privacy mode, the local privacy area is determined, and the preset position 005 and the target position 006 are located in the local privacy area. The MR fluid in the second chamber 102 close to the local privacy area flows into the first chamber 101 for privacy display, and the MR fluid in the second chamber 102 far from the local privacy area continues to be isolated in the second chamber 102. The MR fluid is sequentially moved from the second chamber 102 to the preset position 005 and then to the target position 006. At this time, the privacy viewing angle is a2, and the non-privacy viewing angle is a4.

[0238] The local privacy area is any area in the privacy function area 001.

[0239] In the third embodiment, the magnetorheological fluids in the two second chambers 102 work in cooperation, and the magnetorheological fluids are dispersed to form four light shielding parts 21. In the fourth embodiment, the magnetorheological fluid in one second chamber 102 works, and the total amount of the magnetorheological fluid in the first chamber 101 is reduced, so that the width of the four light shielding parts 21 which are also dispersed is smaller, and the spacing between the light shielding parts 21 is larger, resulting in a larger anti-peep viewing angle.

[0240] It should be understood that, whether in the full anti-peep mode or the partial anti-peep mode, the anti-peep viewing angle can be adjusted by adjusting the total amount of the magnetorheological fluid moving in the first chamber 101. The total amount of the magnetorheological fluid moving in the first chamber 101 can be determined according to the number of the connected second chambers 102.

[0241] In other embodiments, when switching to the partial anti-peep mode, the magnetorheological fluid can also pass through a plurality of transition positions 007 to reach the target position 006 from the initial position. Specifically, the magnetorheological fluid can be divided or aggregated multiple times to achieve the change of multiple anti-peep viewing angles, which is more intelligent and practical.

[0242] S20: In response to switching to the non-anti-peep mode, the magnetic control valve 110 is controlled to be opened for a second preset time duration to make the magnetic control fluid 20 flow from the first chamber 101 into the second chamber 102.

[0243] Specifically, in response to switching to the non-anti-peep mode, the magnetic control valve 110 is controlled to be opened for a second preset time duration, the first chamber 101 is connected with the second chamber 102, and the magnetic control fluid 20 is made to flow from the first chamber 101 into the second chamber 102, and then the magnetic control valve 110 is controlled to be closed to isolate the magnetic control fluid 20 in the second chamber 102.

[0244] The second preset time duration is not limited here and can be selected according to actual needs.

[0245] When switching to the non-anti-peep mode, the control logic of the first electromagnetic element 31 and the second electromagnetic element 33 is as follows:

[0246] At the transition moment of switching from the anti-peep mode to the non-anti-peep mode, the magnetic control fluid 20 is isolated in the first chamber 101, the first electromagnetic element 31 stops working, and the second electromagnetic element 33 continues to work.

[0247] First, the first electromagnetic element 31 is controlled to work to control the magnetic control valve 110 to be opened, and then the second electromagnetic element 33 is controlled to work to control the magnetic control fluid 20 to flow from the first chamber 101 into the second chamber 102.

[0248] After the magnetic control fluid 20 flows into the second chamber 102, the first electromagnetic element 31 is then controlled to be closed, and then the second electromagnetic element 33 is controlled to be closed.

[0249] In some embodiments, the anti-peep display control method further comprises: restarting the anti-peep component stage, repeating the control logic when switching to the non-anti-peep mode.

[0250] In the restarting anti-peep component stage, the control logic when switching to the non-anti-peep mode is repeated, the state left by the last abnormal closing (for example, sudden power interruption) can be cleaned up, ensuring that the new operation starts from a known good state, so as to ensure the optimization of the display effect.

[0251] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0252] The above is only the embodiment of the present application, and does not limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A privacy protection component comprising a privacy protection functional area and an edge area located on the side of the privacy protection functional area; characterized in that: include: An anti-peeping module having a first chamber located in the anti-peeping functional area and a second chamber located in the edge area; the anti-peeping module includes a magnetically controlled valve located in the edge area; the magnetically controlled valve is used to selectively connect the first chamber and the second chamber; A magnetron fluid is at least partially disposed in the second chamber; the magnetron fluid is a light-shielding material; A control module is used to control the on / off state of the magnetically controlled valve, and also to control the movement state of the magnetically controlled fluid in the first chamber and the second chamber.

2. The anti-peeping component according to claim 1, characterized in that: The magnetic control valve includes a base, an elastic member and a magnetic affinity structure; The base is surrounded by a channel, and the channel constitutes at least a portion of the second chamber; the magnetic affinity structure is located between the first chamber and the second chamber; in the elastic direction of the elastic member, one end of the elastic member is connected to the magnetic affinity structure, and the other end is connected to the base; When the magnetic control valve is in an open state, the magnetic attraction force acting on the magnetic affinity structure from the outside of the magnetic control valve is smaller than the elastic force acting on the magnetic affinity structure by the elastic member, the magnetic affinity structure is spaced apart from the base, and the first chamber and the second chamber are communicated with each other; When the magnetic control valve is in a closed state, the magnetic attraction force acting on the magnetic affinity structure from the outside of the magnetic control valve is greater than the elastic force acting on the magnetic affinity structure by the elastic member, the magnetic affinity structure is configured to be in contact with the base and at least block the port of the channel, and the first chamber and the second chamber are isolated from each other.

3. The anti-peeping component according to claim 2, characterized in that: The base has a mounting groove on one side facing the first chamber, and the elastic member is at least partially disposed in the mounting groove; when the magnetic control valve is in a closed state, the magnetically friendly structure blocks the port of the channel facing the first chamber and the notch of the mounting groove.

4. The anti-peeping component according to claim 2, characterized in that: The magnetic control valve is arranged in a one-to-one correspondence with the second chamber; There is one second chamber, and it is located on one side of the first chamber along the direction of the elastic force; Alternatively, there are multiple second chambers, and the multiple second chambers are arranged side by side and located on one side of the first chamber along the direction of the elastic force; Alternatively, there are multiple second chambers, and the multiple second chambers are respectively located on two opposite sides of the first chamber along the elastic force direction.

5. The anti-peeping component according to claim 2, characterized in that: The anti-peeping module further includes a reflective layer, and the reflective layer includes: a reflective coating provided on a surface of the magneto-philic structure of the magnetic control valve close to the first chamber; and / or, A reflective coating is disposed on the light incident side surface of the anti-peeping module and is located in the edge area.

6. The privacy protection component according to claim 2, characterized in that: The anti-peeping module further comprises a frame, wherein the frame has transparency and insulation properties; The frame includes a first frame and a second frame; the first frame is used to form the first chamber, and the second frame is used to form the second chamber; the magnetic control valve is arranged between the first frame and the second frame; Alternatively, the base of the magnetically controlled valve is arranged to form the second chamber, and the frame is used to form the first chamber; Alternatively, the magnetic control valve is disposed inside the frame, and divides the space enclosed by the frame into the first chamber and the second chamber.

7. The privacy protection component according to claim 2, wherein: The control module includes a control circuit and a first electromagnetic element, and the control circuit controls the on / off state of the magnetically controlled valve by controlling the power-on state of the first electromagnetic element; The first electromagnetic element is disposed on a side of the magnetic control valve away from the first chamber and is at least partially opposite to the magneto-philic structure.

8. The privacy protection assembly according to claim 7, wherein: The control module further includes a plurality of second electromagnetic elements arranged at intervals, and the control circuit controls the movement state of the magnetron fluid in the first chamber and the second chamber by controlling the power supply state of the second electromagnetic elements; The second electromagnetic element is disposed on the light incident side of the anti-peeping module, or the second electromagnetic element is disposed on the light emitting side of the anti-peeping module.

9. The privacy protection component according to claim 8, characterized in that: The control module further includes a supporting structure and a heat-conducting layer. The supporting structure and the heat-conducting layer overlap each other to form a receiving space. The second electromagnetic element is disposed in the receiving space.

10. A display device, characterized in that: The device comprises at least one anti-peeping component, wherein the anti-peeping component is the anti-peeping component according to any one of claims 1 to 9.

11. An anti-peeping display method, using the anti-peeping component according to any one of claims 1 to 9; characterized in that: include: In response to switching to the anti-peeping mode, controlling the magnetic control valve to open for a first preset time period to allow the magnetic control fluid to flow from the second chamber into the first chamber, and controlling the movement state of the magnetic control fluid in the first chamber; In response to switching to the non-peeping mode, the magnetic control valve is controlled to open for a second preset time period to allow the magnetic control fluid to flow from the first chamber into the second chamber.

12. The anti-peeping display method according to claim 11, characterized in that: In response to switching to the anti-peeping mode, controlling the magnetic control valve to open for a first preset time to allow the magnetic control fluid to flow from the second chamber into the first chamber, and controlling the movement state of the magnetic control fluid in the first chamber, includes: In response to switching to the anti-peeping mode, controlling the magnetically controlled valve to open for a first preset time period, and controlling the power-on timing of the plurality of second electromagnetic elements so that the magnetically controlled fluid in the second chamber reaches a preset position in the first chamber; The magnitude of the current flowing through the second electromagnetic element is controlled so that the magnetron fluid reaches the target position of the first chamber from the preset position.

13. The anti-peeping display method according to claim 12, characterized in that: The anti-peeping mode includes a full anti-peeping mode and / or a partial anti-peeping mode; The controlling the magnitude of the current flowing through the second electromagnetic element so that the magnetron fluid reaches the target position of the first chamber from the preset position includes: The magnitude of the current flowing through the second electromagnetic element is controlled multiple times so that the magnetron fluid starts from the preset position and sequentially passes through at least one transition position to reach the target position.

14. The anti-peeping display method according to claim 12 or 13, characterized in that: Getting from the current location to the next location includes: Synchronously increasing or decreasing the current of the second electromagnetic element at the auxiliary position so that the magnetron fluid directly moves from the current position to the next position; Wherein, in a direction parallel to the anti-peeping module, the auxiliary position is located on the side of and adjacent to the current position.

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