Display device, control circuit, anti-peeping display method, and storage medium

Abstract

The present application provides a display device (500), a control circuit (300), a peeping prevention display method, and a storage medium (400). The display device (500) includes a display panel (200) and a backlight module (100), and the peeping prevention display method includes: identifying an anti-peeping area; controlling a dimming diaphragm (3) to alternately switch between a transparent mode and a diffusion mode; controlling a first light-emitting unit (22) rotated into the anti-peeping area not to emit light and a second light-emitting unit (23) to emit light in response to the dimming diaphragm (3) switching to the transparent mode; and controlling both the first light-emitting unit (22) and the second light-emitting unit (23) rotated into the anti-peeping area not to emit light in response to the dimming diaphragm (3) switching to the diffusion mode. In different modes of the dimming diaphragm (3), the first light-emitting unit (22) and the second light-emitting unit (23) can continuously change their positions with the rotation of the light bar to adjust the light-emitting conditions, and change the area through which the collimated light is transmitted to the display panel (200), thereby realizing local dynamic anti-peeping of the display panel (200).

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority from Chinese patent application having application number 202211245579.9, filed on October 12, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of display technology, and in particular to a display device, a control circuit, an anti-peek display method, and a storage medium. [Background technology]

[0003] Currently, liquid crystal display (LCD) display panels usually use a privacy film in the backlight module in combination with an electronically controlled liquid crystal film to achieve switching of the anti-peep mode.

[0004] Conventional LCDs with switchable privacy modes use a privacy film (which allows only collimated light to pass through), resulting in extremely low backlight utilization, and even when switched to non-privacy mode, the light is already absorbed by the privacy film and wasted. Even if the backlight module is equipped with splittable light emitting diodes (LEDs) as backlights, the privacy film prevents the display panel from achieving high brightness. Summary of the Invention

[0005] The main technical problem that this application aims to solve is to provide a display device, a control circuit, an anti-spy display method and a storage medium, and solve the problems of the prior art that the LCD with switchable anti-spy cannot achieve local dynamic anti-spy and has low utilization rate of the backlight.

[0006] In order to solve the above technical problems, the first technical solution adopted by this application is as follows: An anti-peeping display method is provided for a display device, the display device includes a display panel and a backlight module, the backlight module includes a backplate, a light bar, a dimming diaphragm and a driving assembly, the backplate includes a bottom plate, the light bar is disposed on one side of the bottom plate, the light bar includes a circuit board, and a plurality of first light-emitting units and a plurality of second light-emitting units disposed on the circuit board, the dimming diaphragm is disposed on a side of the light bar away from the bottom plate, the dimming diaphragm has a diffusion mode and a transparent mode, the driving assembly is disposed on the bottom plate and connected to the light bar, and is used to drive and rotate the light bar, the first light-emitting unit is disposed on the bottom plate, the light bar is disposed on the side of the light bar away from the bottom plate, the dimming diaphragm has a diffusion mode and a transparent mode, the driving assembly is disposed on the bottom plate and connected to the light bar, and is used to drive and rotate the light bar, The unit is used to generate diffuse light and the second light-emitting unit is used to generate collimated light, wherein the anti-peep display method includes: identifying an anti-peep area; controlling a dimming diaphragm to alternately switch between a transparent mode and a diffuse mode; in response to the dimming diaphragm switching to the transparent mode, controlling the first light-emitting unit rotated into the anti-peep area not to emit light and controlling the second light-emitting unit to emit light; and in response to the dimming diaphragm switching to the diffuse mode, controlling both the first light-emitting unit and the second light-emitting unit rotated into the anti-peep area not to emit light.

[0007] Here, the anti-peep display method includes controlling the first light-emitting unit and the second light-emitting unit outside the anti-peep area so that they do not emit light in response to the light-adjusting diaphragm switching to the transparent mode, and controlling the first light-emitting unit and / or the second light-emitting unit outside the anti-peep area so that they emit light in response to the light-adjusting diaphragm switching to the diffusion mode, or controlling the first light-emitting unit outside the anti-peep area so that it emits light or both the first light-emitting unit and the second light-emitting unit emit light in response to the light-adjusting diaphragm switching to the transparent mode. the light emitting unit outside the anti-peep area to emit light, and in response to the dimming diaphragm switching to the diffusion mode, controlling neither the first light emitting unit nor the second light emitting unit outside the anti-peep area to emit light; or in response to the dimming diaphragm switching to the transparent mode, controlling the first light emitting unit and / or the second light emitting unit outside the anti-peep area to emit light, and in response to the dimming diaphragm switching to the diffusion mode, controlling the first light emitting unit and / or the second light emitting unit outside the anti-peep area to emit light.

[0008] Here, the anti-peek display method further includes controlling a first light-emitting unit rotated into a non-display area of ​​the display panel so that it does not emit light, and / or controlling a second light-emitting unit rotated into a non-display area of ​​the display panel so that it does not emit light.

[0009] In order to solve the above technical problem, the second technical solution provided by this application is as follows: A control circuit for realizing anti-peeping display of a display device is provided, the display device includes a display panel and a backlight module, the backlight module includes a backplate, a light bar, a dimming diaphragm and a driving assembly, the backplate includes a bottom plate, the light bar is installed on one side of the bottom plate, the light bar includes a circuit board, and a plurality of first light-emitting units and a plurality of second light-emitting units installed on the circuit board, the dimming diaphragm is disposed on a side of the light bar away from the bottom plate, the dimming diaphragm has a diffusion mode and a transparent mode, the driving assembly is disposed on the bottom plate and connected to the light bar, and is used to drive and rotate the light bar, the first light-emitting unit is used for generating diffuse light, the second light-emitting unit is used for generating collimated light, and the control The circuit includes a display control module, which is used for receiving an image signal and controlling the display panel to display an image according to the image signal, wherein the control circuit further includes an anti-peep module, which is used for receiving an anti-peep signal and identifying an anti-peep area, controlling the dimming diaphragm to alternately switch between a transparent mode and a diffusion mode, controlling the first light-emitting unit rotated into the anti-peep area not to emit light and controlling the second light-emitting unit to emit light in response to the dimming diaphragm switching to the transparent mode, and controlling both the first light-emitting unit and the second light-emitting unit rotated into the anti-peep area not to emit light in response to the dimming diaphragm switching to the diffusion mode.

[0010] Here, the anti-peep module is used to control the first light-emitting unit and the second light-emitting unit outside the anti-peep area not to emit light in response to the dimming diaphragm switching to the transparent mode, and to control the first light-emitting unit and / or the second light-emitting unit outside the anti-peep area to emit light in response to the dimming diaphragm switching to the diffusion mode, or to control the first light-emitting unit outside the anti-peep area to emit light or both the first light-emitting unit and the second light-emitting unit to emit light in response to the dimming diaphragm switching to the transparent mode. The light-emitting unit may be used to control the first light-emitting unit and / or the second light-emitting unit outside the anti-peep area to emit light in response to the dimming diaphragm switching to the diffusion mode, and to control neither the first light-emitting unit nor the second light-emitting unit outside the anti-peep area to emit light in response to the dimming diaphragm switching to the transparent mode, and to control the first light-emitting unit and / or the second light-emitting unit outside the anti-peep area to emit light in response to the dimming diaphragm switching to the diffusion mode.

[0011] Here, the anti-snooping module is used to control a first light-emitting unit rotated into a non-display area of ​​the display panel so that it does not emit light, and / or to control a second light-emitting unit rotated into a non-display area of ​​the display panel so that it does not emit light.

[0012] In order to solve the above technical problems, the third technical solution provided by the present application is as follows: A display device is provided, the display device includes a display panel, a backlight module and a control circuit, where the control circuit is the above control circuit, the backlight module includes a backplate, a light bar, a dimming diaphragm and a driving assembly, the backplate includes a bottom plate, the light bar is disposed on one side of the bottom plate, the light bar includes a circuit board, and a plurality of first light-emitting units and a plurality of second light-emitting units disposed on the circuit board, the dimming diaphragm is disposed on a side of the light bar away from the bottom plate, the dimming diaphragm has a diffusion mode and a transparent mode, the driving assembly is disposed on the bottom plate and connected to the light bar, and is used to drive and rotate the light bar, the first light-emitting unit is used to generate diffusion light, and the second light-emitting unit is used to generate collimated light.

[0013] Here, the driving assembly is used to drive the light bars to rotate around the center of the light bars to form circular rotation areas, the circular rotation areas of two adjacent light bars partially overlap, and the rotation phases of the two adjacent light bars are not synchronized to avoid mutual interference, the display panel includes a display area, and the multiple circular rotation areas of the multiple light bars together cover the entire display area of ​​the display panel.

[0014] Here, the display area is rectangular, and the distance between the center of the light bar corresponding to a corner of the rectangle and the vertex of the corner of the rectangle is equal to the radius of the circular rotation area.

[0015] In order to solve the above technical problems, the fourth technical solution provided by this application is as follows: A storage medium is provided, in which a program file is stored, and the above-mentioned anti-peeping display method can be realized by executing the program file.

[0016] The beneficial effects of the present application are as follows: Different from the prior art, the present application provides a display device, a control circuit, an anti-peep display method and a storage medium, the display device includes a display panel and a backlight module, and the anti-peep display method includes: identifying an anti-peep area; controlling a dimming diaphragm to alternately switch between a transparent mode and a diffusion mode; controlling the first light-emitting unit rotated to the anti-peep area not to emit light and the second light-emitting unit to emit light in response to the dimming diaphragm switching to the transparent mode; and controlling the first light-emitting unit and the second light-emitting unit rotated to the anti-peep area not to emit light in response to the dimming diaphragm switching to the diffusion mode. In different modes of the dimming diaphragm, the first light-emitting unit and the second light-emitting unit continuously change positions and adjust the light-emitting state according to the rotation of the light bar, so that the area where the collimated light is transmitted to the display panel can be further changed, and local dynamic anti-peep of the display panel can be realized. [Brief description of the drawings]

[0017] In order to more clearly describe the technical solutions in the embodiments of the present application, the following briefly describes the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. Those skilled in the art can obtain other drawings from these drawings without creative efforts. [Figure 1] FIG. 1 is a structural schematic diagram of an embodiment of a display device provided in the present application; [Diagram 2] FIG. 2 is a structural schematic diagram of one embodiment of a backlight module provided in the present application; [Diagram 3] FIG. 2 is a structural schematic diagram of the first embodiment of the light bar and driving assembly provided in the present application; [Figure 4a] FIG. 1 is a structural schematic diagram of a first embodiment of a light bar provided in the present application; [Figure 4b] FIG. 2 is a structural schematic diagram of the second embodiment of the light bar provided in the present application. [Figure 4c] FIG. 2 is a structural schematic diagram of the third embodiment of the light bar provided in the present application. [Figure 4d] FIG. 11 is a structural schematic diagram of the fourth embodiment of the light bar provided in the present application. [Figure 4e] FIG. 11 is a structural schematic diagram of the fifth embodiment of the light bar provided in the present application. [Figure 4f] FIG. 13 is a structural schematic diagram of the sixth embodiment of the light bar provided in the present application. [Figure 4g] FIG. 13 is a structural schematic diagram of the seventh embodiment of the light bar provided in the present application. [Figure 4h] FIG. 13 is a structural schematic diagram of the eighth embodiment of the light bar provided in the present application. [Diagram 5] FIG. 2 is a structural schematic diagram of an embodiment of a gear set in a drive assembly provided in the present application. [Figure 6] FIG. 2 is a structural schematic diagram of a second embodiment of the light bar and driving assembly provided in the present application. [Figure 7] FIG. 13 is a structural schematic diagram of the third embodiment of the light bar and driving assembly provided in the present application. [Figure 8] FIG. 11 is a structural schematic diagram of a fourth embodiment of the light bar and driving assembly provided in the present application. [Figure 9] FIG. 13 is a structural schematic diagram of the fifth embodiment of the light bar and driving assembly provided in the present application. [Figure 10] 1 is a flowchart of an embodiment of a privacy display method provided in the present application. [Figure 11] FIG. 2 is a module schematic diagram of one embodiment of a control circuit provided in the present application. [Figure 12] FIG. 2 is a module schematic diagram of a storage medium provided in the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the solutions of the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0019] In the following description, specific details such as particular system architectures, interfaces, techniques, etc. are provided for purposes of explanation rather than limitation in order to provide a thorough understanding of the present application.

[0020] Hereinafter, the technical solutions of the embodiments of the present application will be described clearly and completely with reference to the drawings of the embodiments of the present application. It is understood that the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments of the present application, all other embodiments that a person skilled in the art can obtain without inventive work are all within the scope of protection of the present application.

[0021] The terms "first", "second", "third", etc. in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or the number of technical features indicated. Thus, a feature defined as "first", "second", "third" may explicitly or implicitly include at least one of the feature. In the description of this application, "plurality" means at least two, e.g., two, three, etc., unless otherwise clearly and specifically defined. All directional indications (e.g., up, down, left, right, front, back...) in the embodiments of this application are used to interpret the relative positional relationship, movement situation, etc. between each part in a certain position (e.g., shown in the drawings), and when the specific position changes, the directionality changes accordingly. In addition, the terms "including", "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the recited steps or units, but may optionally include additional steps or units not recited, or may optionally include other steps or units specific to the process, method, product, or apparatus.

[0022] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described with reference to the embodiment may be included in at least one embodiment of the present application. The appearance of the term in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. As will be understood by those skilled in the art, both explicitly and implicitly, the embodiments described herein can be combined with other embodiments.

[0023] As shown in FIG. 1, FIG. 1 is a structural schematic diagram of one embodiment of a display device provided in this application.

[0024] The present application provides a display device 500, which includes a display panel 200 and a backlight module 100. The display panel 200 is disposed opposite the backlight module 100, and the backlight module 100 provides backlight for the display panel 200. In this embodiment, the backlight module 100 is a direct type backlight module.

[0025] The display panel 200 is a liquid crystal panel. The display panel 200 further includes a display area 201 and a non-display area 202. For example, the non-display area 202 may surround the periphery of the display area 201, or may be provided on only one side of the display area 201. The display area 201 is used to install components such as pixels, driving circuits, data signal lines, and scanning signal lines. The non-display area 202 is used to install components such as scanning circuits and test circuits.

[0026] In one embodiment, the display device 500 further includes a control circuit (not shown in FIG. 1 ), which is used to realize the anti-peep display of the display device 500.

[0027] As shown in Figures 2 and 3, Figure 2 is a structural schematic diagram of one embodiment of a backlight module provided in the present application, and Figure 3 is a structural schematic diagram of a first embodiment of a light bar and a driving assembly provided in the present application.

[0028] This application provides a backlight module 100. The backlight module 100 includes a backplate 1, a light bar 2, a dimming diaphragm 3, and a driving assembly 4. The backplate 1 includes a bottom plate 12, and the light bar 2 is installed on one side of the bottom plate 12. The dimming diaphragm 3 is installed on a side of the light bar 2 away from the bottom plate 12. The driving assembly 4 is installed on the bottom plate 12 and connected to the light bar 2, and is used to drive and rotate the light bar 2.

[0029] In this embodiment, the backplate 1 further includes a side plate 11, which is interconnected with the backplate 1 and manufactured integrally, and the side plate 11 is installed on the side of the bottom plate 12 facing the light bar 2. In other embodiments, the backplate 1 may only include the bottom plate 12, which can be designed according to actual needs and is not limited here.

[0030] The light bar 2 includes a circuit board 21, and a plurality of first light-emitting units 22 and a plurality of second light-emitting units 23 arranged on the circuit board 21. One light bar 2 corresponds to one circuit board 21. The first light-emitting unit 22 is used to generate diffused light, and the second light-emitting unit 23 is used to generate collimated light. The first light-emitting unit 22 includes a first light-emitting element 221 arranged on the side of the circuit board 21 away from the bottom plate 12, and a diffusion layer 222 covering the first light-emitting element 221. The diffusion layer 222 is used to convert the light emitted by the first light-emitting element 221 into diffused light. The second light-emitting unit 23 includes a second light-emitting element 231 arranged on the side of the circuit board 21 away from the bottom plate 12, and a prism layer 232 covering the second light-emitting element 231, and the prism layer 232 is used to convert the light emitted by the second light-emitting element 231 into collimated light. The circuit board 21 is used to control the emission of the first light-emitting element 221 and the second light-emitting element 231. In this embodiment, the diffusion layer 222 is a diffusion coating, and the prism layer 232 is a condensing prism. In other embodiments, the diffusion layer 222 and the prism layer 232 may be other materials, as long as the diffusion layer 222 can convert the light emitted by the first light emitting element 221 into diffused light, and the prism layer 232 can convert the light emitted by the second light emitting element 231 into collimated light. The first light emitting element 221 and / or the second light emitting element 231 may be a cold cathode fluorescent lamp or a light emitting diode (LED), and are not limited here. In this embodiment, the first light emitting element 221 and the second light emitting element 231 are both LEDs. The first light emitting element 221 and the second light emitting element 231 are disposed perpendicular to the circuit board 21. In other embodiments, the first light emitting element 221 and the second light emitting element 231 may be installed at a certain angle with the circuit board 21, and are not limited here, and can be designed according to actual needs.

[0031] The number of the first light-emitting units 22 in the same light bar 2 is the same as the number of the second light-emitting units 23. The first light-emitting units 22 and the second light-emitting units 23 may be spaced apart or in contact with each other. In this embodiment, the first light-emitting units 22 and the second light-emitting units 23 are spaced apart, which helps to simplify the manufacturing process of the diffusion layer 222 and the prism layer 232. The first light-emitting units 22 and the second light-emitting units 23 in the same light bar 2 are arranged in at least one row. That is, the first light-emitting units 22 and the second light-emitting units 23 may be arranged in one row or in multiple rows.

[0032] In this embodiment, the number of light bars 2 is plural. The plurality of first light-emitting units 22 and the plurality of second light-emitting units 23 in each light bar 2 are arranged in a row, and the first light-emitting units 22 and the second light-emitting units 23 are respectively disposed on both sides of the central axis of the light bar 2. The rotation frequency of the light bar 2 is greater than or equal to 20 Hz, which can ensure the uniformity of the light emission of the display panel 200.

[0033] As shown in Figures 4a to 4h, Figure 4a is a structural schematic diagram of a first embodiment of the light bar provided in the present application, Figure 4b is a structural schematic diagram of a second embodiment of the light bar provided in the present application, Figure 4c is a structural schematic diagram of a third embodiment of the light bar provided in the present application, Figure 4d is a structural schematic diagram of a fourth embodiment of the light bar provided in the present application, Figure 4e is a structural schematic diagram of a fifth embodiment of the light bar provided in the present application, Figure 4f is a structural schematic diagram of a sixth embodiment of the light bar provided in the present application, Figure 4g is a structural schematic diagram of a seventh embodiment of the light bar provided in the present application, and Figure 4h is a structural schematic diagram of an eighth embodiment of the light bar provided in the present application.

[0034] In another embodiment, the first light-emitting units 22 and the second light-emitting units 23 in the same light bar 2 may be arranged in a row, and the first light-emitting units 22 and the second light-emitting units 23 may be arranged alternately in sequence along the extension direction of the light bar 2. The first light-emitting units 22 and the second light-emitting units 23 in the same light bar 2 may be arranged in multiple rows, and only the first light-emitting units 22 or the second light-emitting units 23 may be arranged in one row, that is, the first light-emitting units 22 are arranged in one row, and the second light-emitting units 23 are arranged in another row. And / or the first light-emitting units 22 and the second light-emitting units 23 may be arranged in one row, and the number of the first light-emitting units 22 and the second light-emitting units 23 in each row is the same, and the first light-emitting units 22 and the second light-emitting units 23 may be arranged on both sides of the central axis of the light bar 2, respectively, or may be arranged alternately in sequence along the extension direction of the light bar 2 and / or along a direction perpendicular to the extension direction of the light bar 2. It should be noted that the embodiments of the present application are merely examples, and the structure of the light bar 2 is not limited thereto. In one embodiment, the plurality of first light-emitting units 22 and the plurality of second light-emitting units 23 in the same light bar 2 may be arranged in two rows, and the rotation frequency of the light bar 2 is 10 Hz or more.

[0035] The driving assembly 4 is installed between the bottom plate 12 and the circuit board 21, and is connected to the circuit board 21, and is used to drive the light bar 2 to rotate in a plane parallel to the bottom plate 12. In other embodiments, the driving assembly 4 may pass through the bottom plate 12 and be connected to the circuit board 21, or may be installed in other positions, which are not limited here and may be selected according to actual needs.

[0036] The driving assembly 4 is used to drive the light bar 2 to rotate around the center of the light bar 2, forming a circular rotation area 24. That is, the circular rotation area 24 has the center of the light bar 2 as its center, the radius of the circular rotation area 24 is R, and the radius R of the circular rotation area 24 is the farthest distance from the center of the light bar 2 to the end of the light bar 2. The circular rotation areas of two adjacent light bars 2 partially overlap, and the rotation phases of the two adjacent light bars 2 are not synchronized to avoid mutual interference between the light bars 2. The multiple circular rotation areas 24 together cover the entire display area 201 of the display panel 200. In this embodiment, the light bar 2 is multiple, the display area 201 is rectangular, and the distance between the center of the light bar 2 at the corner A of the rectangle and the vertex of the corner A of the rectangle is equal to the radius R of the circular rotation area 24. Therefore, when the number of light bars 2 is reduced, multiple circular rotating regions 24 can cover the entire display area 201 of the display panel 200, thereby ensuring the uniformity of the light emission in the display area 201.

[0037] In this embodiment, the driving assembly 4 includes a plurality of servo motors 41, which are connected to a plurality of light bars 2 in one-to-one correspondence, and the servo motors 41 drive and rotate the light bars 2. The servo motors 41 are installed between the bottom plate 12 and the circuit board 21, connected to the circuit board 21, and installed at the center position of the circuit board 21, that is, the center of the servo motor 41 overlaps with the center of the light bars 2, which can better control the rotation frequency of the light bars 2, and thereby make the rotation frequencies of the light bars 2 consistent, which is beneficial to the uniformity of the light emission of the display panel 200. It should be understood that when the number of light bars 2 is one, the number of the servo motors 41 is also one.

[0038] As shown in FIG. 5, FIG. 5 is a structural schematic diagram of an embodiment of a gear set in a drive assembly provided in the present application.

[0039] In one embodiment, the drive assembly 4 includes a servo motor 41 and a gear set 42, and the gear set 42 is connected to the servo motor 41 and the plurality of light bars 2. The servo motor 41 drives the gear set 42 to rotate, and the gear set 42 drives the plurality of light bars 2 to rotate. The gear set 42 includes a plurality of first gears 421 and a plurality of second gears 422, and the first gears 421 and the second gears 422 are installed between the circuit board 21 and the back plate 1 and are connected to the circuit board 21. The number of the servo motor 41 is one, and can drive and rotate one first gear 421 or one second gear 422. One first gear 421 is installed corresponding to one light bar 2, and the center of the first gear 421 overlaps with the center of the light bar 2. The first gear 421 and the second gear 422 mesh with each other. The first gear 421 and the second gear 422 are completely the same gear, and are set at different positions to ensure that all the first gears 421 rotate at a uniform speed, so that the rotation frequencies of the multiple light bars 2 are consistent. One second gear 422 is installed on the perpendicular line Y of the center point connecting line X of two adjacent first gears 421. In this embodiment, one second gear 422 is installed on the perpendicular line Y of the center point connecting line X of two adjacent first gears 421, and the center point of the second gear 422 is not located on the center point connecting line X of the two adjacent first gears 421. Compared with the embodiment in which the driving assembly 4 includes the servo motor 41, this embodiment drives and rotates the light bars 2 through gears, which can further ensure that the rotation speeds of the light bars 2 are consistent, and can improve the uniformity of the light emission of the display panel 200. In another embodiment, the center point of the second gear 422 can be located on the center point connecting line X of two adjacent first gears 421. The number and installation method of the first gears 421 and the second gears 422 are not limited, as long as one servo motor 41 can cooperate with the first gears 421 and the second gears 422 to ensure that multiple light bars 2 rotate simultaneously.

[0040] The dimming diaphragm 3 is disposed on the side of the light bar 2 away from the bottom plate 12 and spaced apart from the light bar 2. The dimming diaphragm 3 has a diffusion mode and a transparent mode. In the transparent mode, only the collimated light is transmitted through the dimming diaphragm 3 to the display panel 200, and in the diffusion mode, the diffused light is transmitted through the dimming diaphragm 3 to the display panel 200. The first light-emitting unit 22 and the second light-emitting unit 23 can continuously change their positions with the rotation of the light bar 2, adjust the light emission according to the switched mode of the dimming diaphragm 3, and change the area where the collimated light is transmitted to the display panel 200, thereby realizing the local dynamic anti-peeping of the display panel 200. The switching speed of the dimming diaphragm 3 is related to the rotation frequency of the light bar 2, and the faster the rotation of the light bar 2, the faster the switching speed of the dimming diaphragm 3. The smaller the number of rows in which the first light-emitting units 22 and the second light-emitting units 23 are arranged in each light bar 2, the faster the light bar 2 rotates.

[0041] In one embodiment, the plurality of first light-emitting units 22 and the plurality of second light-emitting units 23 in each light bar 2 are arranged in a row, and the number of the first light-emitting units 22 is equal to the number of the second light-emitting units 23. The rotation frequency of the light bar 2 is greater than or equal to 20 Hz. The dimming diaphragm 3 is switched at least 20 times per second.

[0042] In another embodiment, the plurality of first light-emitting units 22 and the plurality of second light-emitting units 23 in each light bar 2 are arranged in two rows, and the rotation frequency of the light bar 2 is 10 Hz or more. The dimming diaphragm 3 is switched at least 10 times per second.

[0043] The backlight module 100 further includes a support member 5 and a support plate 6. The support plate 6 is disposed between the dimming diaphragm 3 and the light bar 2, and is disposed at a distance from the dimming diaphragm 3. The support member 5 is disposed on the inner side of the side plate 11 and abuts against one side of the bottom plate 12 adjacent to the light bar 2, and the support plate 6 is disposed at one end of the support member 5 away from the bottom plate 12. The support member 5 supports the support plate 6 so that a certain gap is formed between the support plate 6 and the light bar 2, so as not to interfere with the rotation of the light bar 2. The support plate 6 is a transparent support plate 6, and the support plate 6 may be glass, or may include glass and steel net, or may be other materials, and is not limited here. In this embodiment, the support member 5 has a step structure 51 on the side closer to the light bar 2, and the end of the support plate 6 is installed on the end face of the step structure 51 parallel to the bottom plate 12; in other embodiments, the support member 5 may have other shapes, as long as it ensures that there is a gap between the support plate 6 and the light bar 2 and the rotation of the light bar 2 is not hindered.

[0044] As shown in FIG. 3 and FIG. 6, FIG. 6 is a structural schematic diagram of the second embodiment of the light bar and driving assembly provided in the present application.

[0045] The structure of the second embodiment of the light bar 2 and the driving assembly 4 provided in the present application is basically the same as that of the first embodiment of the light bar 2 and the driving assembly 4 provided in the present application, with the following differences: the first light-emitting unit 22 and the second light-emitting unit 23 of the same light bar 2 are alternately installed in sequence along the extension direction of the light bar 2;

[0046] In this embodiment, the first light-emitting units 22 and the second light-emitting units 23 of the same light bar 2 are alternately arranged in sequence along the extending direction of the light bar 2. The rotation frequency of the light bar 2 is greater than or equal to 10 Hz. Compared with the first embodiment of the light bar 2 and the driving assembly 4 provided in this application, the light bar 2 of this embodiment has better stability during rotation, and the light emission uniformity of the display panel 200 is better.

[0047] As shown in FIG. 6 and FIG. 7, FIG. 7 is a structural schematic diagram of the third embodiment of the light bar and driving assembly provided in this application.

[0048] The structure of the third embodiment of the light bar 2 and the driving assembly 4 provided in the present application is basically the same as the structure of the second embodiment of the light bar 2 and the driving assembly 4 provided in the present application, with the differences being as follows: JPEG2024547144000003.jpg14170

[0049] JPEG2024547144000004.jpg17170 area 201 cannot be completely covered, so the first light-emitting unit 22 and the second light-emitting unit 23 need to be arranged at a certain angle to the circuit board 21 to let supplemental light into the display area 201 that is not covered by the circular rotation area 24, in order to ensure the normal display of the display panel 200. Compared with the second embodiment of the light bar 2 and the driving assembly 4 provided in the present application, the precision of the distance requirement between the light bar 2 in this embodiment is lower, and the process is simpler.

[0050] As shown in FIG. 6 and FIG. 8, FIG. 8 is a structural schematic diagram of the fourth embodiment of the light bar and driving assembly provided in the present application.

[0051] The structure of the fourth embodiment of the light bar 2 and the driving assembly 4 provided in the present application is basically the same as that of the second embodiment of the light bar 2 and the driving assembly 4 provided in the present application, with the following differences: the first light-emitting units 22 and the second light-emitting units 23 in the same light bar 2 are arranged in two rows.

[0052] In this embodiment, the first light-emitting units 22 and the second light-emitting units 23 in the same light bar 2 are arranged in two rows, the number of the first light-emitting units 22 and the second light-emitting units 23 in each row is the same, and the order in which the first light-emitting units 22 and the second light-emitting units 23 are alternately arranged in each row is different, so that the first light-emitting units 22 and the second light-emitting units 23 in the first row are centrally symmetrical with the first light-emitting units 22 and the second light-emitting units 23 in the second row. The rotation frequency of the light bar 2 is greater than or equal to 10 Hz, and compared with the second embodiment of the light bar 2 and the driving assembly 4 provided in the present application, the light bar 2 of this embodiment has better stability during rotation, the rotation speed of the light bar 2 is slower, and the light emission uniformity of the display panel 200 is better.

[0053] In other embodiments, the rotation phase difference between adjacent light bars 2 does not have to be π / 2, as long as the light bars 2 do not interfere with each other when they rotate and the display panel 200 can ensure normal display.

[0054] As shown in FIG. 8 and FIG. 9, FIG. 9 is a structural schematic diagram of the fifth embodiment of the light bar and driving assembly provided in the present application.

[0055] The structure of the fifth embodiment of the light bar 2 and the driving assembly 4 provided in the present application is basically the same as that of the fourth embodiment of the light bar 2 and the driving assembly 4 provided in the present application, with the following differences: the number of the light bar 2 is one.

[0056] The number of light bars 2 is one, and the circular rotation area 24 of the light bar 2 covers the entire display area 201. In this embodiment, the display area 201 is rectangular, the center of the light bar 2 overlaps with the center of the display area 201, and the radius R of the circular rotation area 24 is half the length of the diagonal of the rectangle, and at the same time, the radius R of the circular rotation area 24 is half the length of the light bar 2. Compared with the fourth embodiment of the light bar 2 and the driving assembly 4 provided in the present application, the installation manner of the light bar 2 in this embodiment is simpler and the process is more straightforward.

[0057] The embodiments of the present application are merely examples, and do not mean that the arrangement of the light bar 2 is limited to these.

[0058] The present application provides a backlight module 100. The backlight module 100 includes a backplate 1, a light bar 2, a dimming diaphragm 3 and a driving assembly 4. The backplate 1 includes a bottom plate 12. The light bar 2 is disposed on one side of the bottom plate 12. The light bar 2 includes a circuit board 21 and a plurality of first light-emitting units 22 and second light-emitting units 23 disposed on the circuit board 21. The dimming diaphragm 3 is disposed on a side of the light bar 2 away from the bottom plate 12, the dimming diaphragm 3 has a diffusion mode and a translucent mode, and the driving assembly 4 is disposed on the bottom plate 12 and connected to the light bar 2 to drive and rotate the light bar 2. The first light-emitting unit 22 is used to generate diffuse light, and the second light-emitting unit 23 is used to generate collimated light. By installing a first light-emitting unit 22 capable of generating diffused light and a second light-emitting unit 23 capable of generating collimated light on the rotatable light bar 2, the first light-emitting unit 22 and the second light-emitting unit 23 can continuously change their positions with the rotation of the light bar 2, adjust the light-emitting conditions according to the switching mode of the dimming diaphragm 3, and change the area through which the collimated light is transmitted to the display panel 200, thereby realizing local dynamic anti-peeping of the display panel 200, and at the same time reducing the use of privacy film and reducing the power consumption of the light bar 2.

[0059] The present application provides an anti-peek display method applied to the display device 500, which is the above-mentioned display device 500.

[0060] As shown in FIG. 10, FIG. 10 is a flowchart of an embodiment of the anti-peek display method provided in the present application.

[0061] The specific steps of the anti-peep display method applied to the display device 500 in this application are as follows.

[0062] S1: Check the anti-spy area.

[0063] Specifically, it is determined that only collimated light is transmitted to the display area 201 of the display panel 200, and the display area 201 is set as an anti-peep area. The display screen in the anti-peep area is visible from a front viewing angle, but is not visible from a wide viewing angle.

[0064] S2: Controls the dimming diaphragm to alternate between transparent and diffuse modes.

[0065] Specifically, the light control diaphragm is controlled to alternate between a transparent mode and a diffusion mode according to the requirements for anti-peeping. In the transparent mode, only collimated light is transmitted through the light control film 3 to the display panel 200, and in the diffusion mode, diffused light is transmitted through the light control film 3 to the display panel 200.

[0066] In different modes of the dimming diaphragm 3, the light-emitting status of the first light-emitting unit 22 and the second light-emitting unit 23 in the light bar 2 rotated into the anti-peep area is not the same as the light-emitting status of the first light-emitting unit 22 and the second light-emitting unit 23 in the light bar 2 outside the anti-peep area. The light-emitting status of the first light-emitting unit 22 and the second light-emitting unit 23 in the light bar 2 is adjusted according to the mode of the dimming diaphragm 3, so that the display screen in the anti-peep area can be seen from the front viewing angle, but cannot be seen from a wide viewing angle. The switching speed of the dimming diaphragm 3 is related to the rotation frequency of the light bar 2, and the faster the rotation of the light bar 2, the faster the switching speed of the dimming diaphragm 3.

[0067] In one embodiment, the multiple first light-emitting units 22 and the multiple second light-emitting units 23 of each light bar 2 are arranged in a row, and the number of the first light-emitting units 22 is the same as the number of the second light-emitting units 23. The rotation frequency of the light bar 2 is greater than or equal to 20 Hz. The dimming diaphragm 3 is switched at least 20 times per second.

[0068] In another embodiment, the plurality of first light-emitting units 22 and the plurality of second light-emitting units 23 in each light bar 2 are arranged in two rows, and the rotation frequency of the light bar 2 is 10 Hz or more. The dimming diaphragm 3 is switched at least 10 times per second.

[0069] The smaller the number of rows in which the first light-emitting units 22 and the second light-emitting units 23 are arranged in each light bar 2, the faster the light bar 2 rotates.

[0070] S3: In response to the dimming diaphragm switching to the transparent mode, the first light-emitting unit rotated into the anti-peep area is controlled not to emit light, and the second light-emitting unit rotated into the anti-peep area is controlled to emit light.

[0071] Specifically, in response to the dimming diaphragm 3 switching to the transparent mode, the first light-emitting unit 22 rotated to the anti-peep area is controlled not to emit light, and the second light-emitting unit 23 is controlled to emit light, so that the collimated light emitted by the second light-emitting unit 23 can be transmitted through the dimming diaphragm 3 to the display panel 200. The first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peep area emit light, or neither the first light-emitting unit 22 nor the second light-emitting unit 23 outside the anti-peep area emits light. When the brightness of the display screen in the anti-peep area is insufficient, the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peep area emit light, so that the brightness of the display screen in the anti-peep area can be improved.

[0072] S4: In response to the dimming diaphragm switching to the diffusion mode, the first light-emitting unit and the second light-emitting unit that have rotated into the anti-peep area are controlled so as not to emit light.

[0073] Specifically, in response to the dimming diaphragm 3 switching to the diffusion mode, the first light-emitting unit 22 and the second light-emitting unit 23 that have rotated into the peep prevention area are controlled not to emit light. The first light-emitting unit 22 and / or the second light-emitting unit 23 outside the peep prevention area emit light, or the first light-emitting unit 22 and the second light-emitting unit 23 outside the peep prevention area do not emit light.

[0074] In one embodiment, the first light-emitting unit 22 rotated into the non-display area 202 of the display panel 200 is controlled not to emit light, and / or the second light-emitting unit 23 rotated into the non-display area 202 of the display panel 200 is controlled not to emit light. Since the first light-emitting unit 22 and the second light-emitting unit 23 do not emit light after rotating out of the display area 201 of the display panel 200, bright light on the sides can be avoided, and the power consumption of the display device 500 can be reduced.

[0075] In the transparent mode, the first light-emitting unit 22 outside the anti-peep area does not emit light, and the second light-emitting unit 23 emits light, and in the diffusion mode, when neither the first light-emitting unit 22 nor the second light-emitting unit 23 in the anti-peep area emits light, the entire display area 201 is an anti-peep area. In the transparent mode and the anti-peep mode, both the first light-emitting unit 22 and the second light-emitting unit 23 outside the anti-peep area cannot not emit light, otherwise the image on the display panel 200 cannot be displayed normally. Whether the dimming diaphragm 3 switches to the transparent mode first or the diffusion mode first is designed according to actual needs and is not limited here.

[0076] In a first specific embodiment, an anti-peep area is determined, and in response to the dimming diaphragm 3 switching to the transparent mode, the first light-emitting unit 22 rotated into the anti-peep area is controlled not to emit light, and the second light-emitting unit 23 is controlled to emit light, and the first light-emitting unit 22 and the second light-emitting unit 23 outside the anti-peep area are controlled not to emit light. In response to the dimming diaphragm 3 switching to the diffusion mode, the first light-emitting unit 22 and the second light-emitting unit 23 rotated into the anti-peep area are controlled not to emit light, and the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peep area are controlled to emit light.

[0077] In a second specific embodiment, the anti-peep area is determined, and in response to the dimming diaphragm 3 switching to the transparent mode, the first light-emitting unit 22 rotated into the anti-peep area is controlled not to emit light, and the second light-emitting unit 23 is controlled to emit light, and the first light-emitting unit 22 outside the anti-peep area is controlled to emit light, or both the first light-emitting unit 22 and the second light-emitting unit 23 are controlled to emit light. In response to the dimming diaphragm 3 switching to the diffusion mode, the first light-emitting unit 22 and the second light-emitting unit 23 rotated into the anti-peep area are controlled not to emit light, and the first light-emitting unit 22 and the second light-emitting unit 23 outside the anti-peep area are controlled not to emit light.

[0078] In a third specific embodiment, an anti-peep area is determined, and in response to the dimming diaphragm 3 switching to the transparent mode, the first light-emitting unit 22 rotated into the anti-peep area is controlled not to emit light, and the second light-emitting unit 23 is controlled to emit light, and the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peep area are controlled to emit light. In response to the dimming diaphragm 3 switching to the diffusion mode, the first light-emitting unit 22 and the second light-emitting unit 23 rotated into the anti-peep area are both controlled not to emit light, and the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peep area are controlled to emit light.

[0079] The present application provides an anti-peep display method applied to a display device 500. The anti-peep display method includes: identifying an anti-peep area; controlling a dimming diaphragm to alternately switch between a transparent mode and a diffusion mode; controlling the first light-emitting unit rotated to the anti-peep area not to emit light and the second light-emitting unit to emit light in response to the dimming diaphragm switching to the transparent mode; and controlling the first light-emitting unit 22 and the second light-emitting unit 23 rotated to the anti-peep area not to emit light in response to the dimming diaphragm 3 switching to the diffusion mode. In different modes of the dimming diaphragm 3, the first light-emitting unit 22 and the second light-emitting unit 23 can continuously change positions with the rotation of the light bar 2 to adjust the light-emitting situation, and change the area where the collimated light is transmitted to the display panel 200, thereby realizing local dynamic anti-peep of the display panel 200.

[0080] As shown in FIG. 11, FIG. 11 is a module schematic diagram of an embodiment of a control circuit provided by the present application.

[0081] The present application provides a control circuit 300 for realizing anti-peek display of a display device 500. The display device 500 is the above-mentioned display device 500. The control circuit 300 is used to realize the above-mentioned anti-peek display method.

[0082] The control circuit 300 includes a display control module 301 and an anti-peeping module 302. The display control module 301 is used for receiving an image signal, and controlling the display panel 200 to display an image according to the image signal.

[0083] The anti-peep module 302 is used to receive the anti-peep signal and identify the anti-peep area, and is also used to control the dimming diaphragm 3 to alternate between the transparent mode and the diffusion mode, and to control the emission of the first light-emitting unit 22 and the second light-emitting unit 23 corresponding to inside and outside the anti-peep area based on the switching mode of the dimming diaphragm 3.

[0084] In a first specific embodiment, the anti-peep module 302 first determines the anti-peep area, and then, in response to the dimming diaphragm switching to the transparent mode, controls the first light-emitting unit rotated into the anti-peep area not to emit light and the second light-emitting unit to emit light, and controls both the first light-emitting unit 22 and the second light-emitting unit 23 outside the anti-peep area not to emit light; and in response to the dimming diaphragm 3 switching to the diffusion mode, controls both the first light-emitting unit 22 and the second light-emitting unit 23 rotated into the anti-peep area not to emit light, and controls the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peep area to emit light.

[0085] In a second specific embodiment, the anti-peep module 302 first determines the anti-peep area, and then, in response to the dimming diaphragm 3 switching to the transparent mode, controls the first light-emitting unit 22 that has rotated into the anti-peep area not to emit light, and controls the second light-emitting unit 23 to emit light, controls the first light-emitting unit 22 outside the anti-peep area to emit light or controls the first light-emitting unit 22 and the second light-emitting unit 23 to both emit light, and in response to the dimming diaphragm 3 switching to the diffusion mode, controls the first light-emitting unit 22 and the second light-emitting unit 23 that have rotated into the anti-peep area not to emit light, and controls the first light-emitting unit 22 and the second light-emitting unit 23 outside the anti-peep area not to emit light.

[0086] In a third specific embodiment, the anti-peep module 302 first determines the anti-peep area, and then, in response to the dimming diaphragm 3 switching to the transparent mode, controls the first light-emitting unit 22 rotated into the anti-peep area not to emit light, and controls the second light-emitting unit 23 to emit light, and controls the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peep area to emit light; and in response to the dimming diaphragm 3 switching to the diffusion mode, controls both the first light-emitting unit 22 and the second light-emitting unit 23 rotated into the anti-peep area not to emit light, and controls the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peep area to emit light.

[0087] In one embodiment, the anti-peeping module 302 can be used to control the first light-emitting unit 22 rotated into the non-display area 202 of the display panel 200 not to emit light, and control the second light-emitting unit 23 rotated into the non-display area 202 of the display panel 200 not to emit light. Since the first light-emitting unit 22 and the second light-emitting unit 23 do not emit light after rotating out of the display area 201 of the display panel 200, it is possible to not only avoid bright light on the side, but also to reduce the power consumption of the display device 500. In another embodiment, the anti-peeping module 302 can be used to control the first light-emitting unit 22 rotated into the non-display area 202 of the display panel 200 not to emit light, or control the second light-emitting unit 23 rotated into the non-display area 202 of the display panel 200 not to emit light.

[0088] As shown in FIG. 12, FIG. 12 is a module schematic diagram of the storage medium provided in the present application.

[0089] The present application further provides a storage medium 400, in which a program file 401 is stored. By executing the program file 401, the above-mentioned anti-peep display method of the display device 500 can be realized, so that the display device 500 can realize local dynamic anti-peep. The program file 401 can be stored in the storage medium 400 in the form of a software product. The program file 401 includes a plurality of instructions for causing a computer device (such as a personal computer, a server, a network device, etc.) or a processor to execute all or part of the steps of various implementation methods of the present application. The storage device includes a medium capable of storing program code, such as a U disk, a mobile hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, or a terminal device such as a computer, a server, a mobile phone, a tablet, etc.

[0090] The above is an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by utilizing the contents of the specification and drawings of the present application, or directly or indirectly applicable to other related technical fields, is similarly included in the patent protection scope of the present application.

Claims

1. A peep prevention display method applied to a display device, comprising: The display device includes a display panel and a backlight module; The backlight module includes a backplate, a light bar, a dimming diaphragm, and a driving assembly; The back plate includes a bottom plate; The light bar is installed on one side of the bottom plate, and the light bar includes a circuit board, and a plurality of first light-emitting units and a plurality of second light-emitting units installed on the circuit board; the dimming diaphragm is disposed on a side of the light bar away from the bottom plate, the dimming diaphragm having a diffusion mode and a transparent mode; The driving assembly is disposed on the bottom plate and connected to the light bar, and is used for driving and rotating the light bar, the first light-emitting unit is used for generating diffused light, and the second light-emitting unit is used for generating collimated light; Here, the peep prevention display method includes: Checking the anti-spy area; controlling the dimming diaphragm to alternate between the transparent mode and the diffuse mode; In response to the light control diaphragm being switched to the transparent mode, the first light emitting unit rotated to the anti-peep area is controlled not to emit light, and the second light emitting unit is controlled to emit light; In response to the dimming diaphragm being switched to the diffusion mode, control is performed so that neither the first light-emitting unit nor the second light-emitting unit rotated to the anti-peep area emits light; A display method for preventing prying, comprising:

2. In response to the light control diaphragm being switched to the transparent mode, controlling the first light-emitting unit rotated to the anti-peep area not to emit light and controlling the second light-emitting unit to emit light, In response to the light control diaphragm being switched to the transparent mode, the first light emitting unit rotated to the anti-peep area is controlled not to emit light, and the second light emitting unit is controlled to emit light; Controlling the first light-emitting unit and / or the second light-emitting unit outside the peep prevention area to emit light, or controlling neither the first light-emitting unit nor the second light-emitting unit outside the peep prevention area to emit light; The method for preventing prying according to claim 1 , comprising:

3. In response to the dimming diaphragm being switched to the diffusion mode, the first light-emitting unit and the second light-emitting unit rotated to the anti-peep area are controlled so as not to emit light. In response to the dimming diaphragm being switched to the diffusion mode, control is performed so that neither of the first light-emitting unit and the second light-emitting unit rotated to the anti-peep area emits light; Controlling the first light-emitting unit and / or the second light-emitting unit outside the peep prevention area to emit light, or controlling neither the first light-emitting unit nor the second light-emitting unit outside the peep prevention area to emit light; The method for preventing prying according to claim 1 , comprising:

4. The peep prevention display method includes: In response to the light control diaphragm switching to the transparent mode, control the first light-emitting unit and the second light-emitting unit outside the peep prevention area not to emit light, and in response to the light control diaphragm switching to the diffusion mode, control the first light-emitting unit and / or the second light-emitting unit outside the peep prevention area to emit light; or In response to the light control diaphragm switching to the transparent mode, the first light-emitting unit outside the anti-peep area is controlled to emit light or the first light-emitting unit and the second light-emitting unit are controlled to emit light, and in response to the light control diaphragm switching to the diffusion mode, the first light-emitting unit and the second light-emitting unit outside the anti-peep area are controlled not to emit light; or In response to the light control diaphragm switching to the transparent mode, control the first light-emitting unit and / or the second light-emitting unit outside the peep prevention area to emit light, and in response to the light control diaphragm switching to the diffusion mode, control the first light-emitting unit and / or the second light-emitting unit outside the peep prevention area to emit light; The method for preventing privacy violation according to claim 1 , further comprising:

5. The peep prevention display method includes: Controlling the first light-emitting unit rotated to a non-display area of ​​the display panel so that the first light-emitting unit does not emit light; and / or Controlling the second light-emitting unit rotated in the non-display area of ​​the display panel so as not to emit light; The method for preventing privacy violation according to claim 1 , further comprising:

6. A control circuit for realizing a peep prevention display of a display device, The display device includes a display panel and a backlight module; The backlight module includes a backplate, a light bar, a dimming diaphragm, and a driving assembly; The back plate includes a bottom plate; The light bar is installed on one side of the bottom plate, and the light bar includes a circuit board, and a plurality of first light-emitting units and a plurality of second light-emitting units installed on the circuit board; the dimming diaphragm is disposed on a side of the light bar away from the bottom plate, the dimming diaphragm having a diffusion mode and a transparent mode; The driving assembly is disposed on the bottom plate and connected to the light bar, and is used for driving and rotating the light bar, the first light-emitting unit is used for generating diffused light, and the second light-emitting unit is used for generating collimated light; The control circuit includes a display control module, and the display control module is used to receive an image signal and control a display panel to display an image according to the image signal, where the control circuit further includes an anti-peeping module; The anti-snooping module includes: receiving an anti-snooping signal and confirming an anti-snooping area; controlling the dimming diaphragm to alternate between the transparent mode and the diffuse mode; In response to the dimming diaphragm being switched to the transparent mode, the first light-emitting unit rotated to the anti-peep area is controlled not to emit light, and the second light-emitting unit is controlled to emit light; and A control circuit used to control the first light-emitting unit and the second light-emitting unit rotated into the anti-peep area so that neither of them emits light in response to the dimming diaphragm switching to the diffusion mode.

7. The anti-snooping module includes: In response to the light control diaphragm switching to the transparent mode, the first light-emitting unit and the second light-emitting unit outside the anti-peep area are controlled not to emit light, and in response to the light control diaphragm switching to the diffusion mode, the first light-emitting unit and / or the second light-emitting unit outside the anti-peep area are controlled to emit light; or In response to the light control diaphragm switching to the transparent mode, the first light-emitting unit outside the anti-peep area is controlled to emit light or both the first light-emitting unit and the second light-emitting unit are controlled to emit light, and in response to the light control diaphragm switching to the diffusion mode, the first light-emitting unit outside the anti-peep area is controlled not to emit light, or The control circuit of claim 6 is used to control the first light-emitting unit and / or the second light-emitting unit outside the anti-peep area to emit light in response to the dimming diaphragm switching to the transparent mode, and to control the first light-emitting unit and / or the second light-emitting unit outside the anti-peep area to emit light in response to the dimming diaphragm switching to the diffusion mode.

8. The anti-snooping module includes: Controlling the first light-emitting unit rotated to a non-display area of ​​the display panel so that the first light-emitting unit does not emit light; and / or The control circuit according to claim 6 , which is used for controlling the second light-emitting unit rotated in the non-display area of ​​the display panel not to emit light.

9. A display device including a display panel, a backlight module, and a control circuit, The control circuit is a control circuit according to claim 6, The backlight module includes a backplate, a light bar, a dimming diaphragm, and a driving assembly; The back plate includes a bottom plate; The light bar is installed on one side of the bottom plate, and the light bar includes a circuit board, and a plurality of first light-emitting units and a plurality of second light-emitting units installed on the circuit board; the dimming diaphragm is disposed on a side of the light bar away from the bottom plate, the dimming diaphragm having a diffusion mode and a transparent mode; The display device, wherein the driving assembly is disposed on the bottom plate and connected to the light bar, and is used to drive and rotate the light bar, the first light-emitting unit is used to generate diffused light, and the second light-emitting unit is used to generate collimated light.

10. The driving assembly is used to drive the light bar to rotate around the center of the light bar to form a circular rotation area, and the circular rotation areas of two adjacent light bars partially overlap, and the rotation phases of the two adjacent light bars are not synchronized to avoid mutual interference; The display device of claim 9 , wherein the display panel includes a display area, and the circular rotating areas of the light bars collectively cover the entire display area of ​​the display panel.

11. The display device of claim 10, wherein the shape of the display area is rectangular, and the distance between the center of the light bar corresponding to a corner of the rectangle and a vertex of the corner of the rectangle is equal to the radius of the circular rotation area.

12. the drive assembly is used to drive the light bar to rotate about a center of the light bar to form a circular rotation area; The display device of claim 9 , wherein the display panel includes a display area, the number of the light bars is one, and the circular rotating area of ​​the light bar covers the entire display area.

13. 13. The display device of claim 12, wherein the shape of the display area is rectangular, the center of the light bar overlaps with the center of the display area, the radius of the circular rotation area is half the length of the diagonal of the rectangle, and the radius of the circular rotation area is half the length of the light bar.

14. 10. The display device according to claim 9, wherein the backlight module is a direct type backlight module.

15. The drive assembly includes a plurality of servo motors, the plurality of servo motors being connected to a plurality of the light bars in a one-to-one correspondence, and the servo motors drive and rotate the light bars; or The display device of claim 9 , wherein the drive assembly includes the servo motor and a gear set, the gear set is connected to the servo motor and the plurality of light bars, the servo motor drives the gear set to rotate, and the gear set drives the plurality of light bars to rotate.

16. A storage medium having a program file stored therein, the method for preventing privacy protection according to claim 1 being realized by executing the program file.

Images