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 bearing 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-peeping display method, and a storage medium. [Background technology]

[0003] Currently, liquid crystal display (LCD) display panels typically use a privacy film in the backlight module in combination with an electronically controlled liquid crystal film to switch between anti-peeping modes.

[0004] Conventional LCDs with switchable privacy modes use privacy film (which allows only collimated light to pass through), resulting in extremely low backlight utilization. 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 to be solved by this application is to provide a display device, a control circuit, an anti-peeping display method and a storage medium, and to solve the problems of the prior art that the LCD with switchable anti-peeping cannot achieve local dynamic anti-peeping and has low backlight utilization rate.

[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 comprising: a display panel and a backlight module, the backlight module comprising: a backplate, a light bar, a dimming diaphragm and a driving assembly, the backplate comprising: a bottom plate, the light bar being installed on one side of the bottom plate, the light bar comprising: a circuit board, and a plurality of first light-emitting units and a plurality of second light-emitting units being installed on the circuit board, the dimming diaphragm being arranged 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 being arranged on the bottom plate and connected to the light bar, for driving and rotating the light bar, the first light-emitting units The unit is used to generate diffused light, and the second light-emitting unit is used to generate collimated light, wherein the anti-peeping display method includes: identifying an anti-peeping area; controlling a dimming diaphragm to alternately switch between a transparent mode and a diffused mode; in response to the dimming diaphragm switching to the transparent mode, controlling the first light-emitting unit rotated into the anti-peeping 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 diffused mode, controlling both the first light-emitting unit and the second light-emitting unit rotated into the anti-peeping area not to emit light.

[0007] Here, the anti-peeping display method includes controlling the first light-emitting unit and the second light-emitting unit outside the anti-peeping 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-peeping 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-peeping 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. 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-peeping 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-peeping 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-peeping 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-peeping area to emit light.

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

[0009] In order to solve the above technical problems, 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 installed 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 installed 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, and the control The circuit includes a display control module, which is used to receive an image signal and control the display panel to display an image according to the image signal, wherein the control circuit further includes an anti-peeping module, which is used to receive the anti-peeping signal and identify the anti-peeping area, control the dimming diaphragm to alternately switch between a transparent mode and a diffusion mode, control the first light-emitting unit rotated into the anti-peeping 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 control both the first light-emitting unit and the second light-emitting unit rotated into the anti-peeping area not to emit light in response to the dimming diaphragm switching to the diffusion mode.

[0010] Here, the anti-peeping module is used to control the first light-emitting unit and the second light-emitting unit outside the anti-peeping 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-peeping 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-peeping 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-peeping 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-peeping 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-peeping area to emit light in response to the dimming diaphragm switching to the diffusion mode.

[0011] Here, the anti-peeping module is used to control the first light-emitting unit rotated into the non-display area of ​​the display panel so that it does not emit light, and / or to control the second light-emitting unit rotated into the 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 this application is as follows: A display device is provided, the display device comprising: a display panel, a backlight module and a control circuit, wherein the control circuit is the control circuit, the backlight module comprises a backplate, a light bar, a dimming diaphragm and a driving assembly, the backplate comprises a bottom plate, the light bar is installed on one side of the bottom plate, the light bar comprises 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 located 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 located 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.

[0013] Here, 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, 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 the corner of the rectangle and the vertex of the corner of the rectangle is equal to the radius of the circular rotation area.

[0015] 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 in the storage medium, 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-peeping display method, and a storage medium, where the display device includes a display panel and a backlight module, and the anti-peeping display method includes: identifying an anti-peeping area; controlling a dimming diaphragm to alternately switch between a transparent mode and a diffusion mode; controlling a first light-emitting unit that has rotated into the anti-peeping area to not emit light and a 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 that have rotated into the anti-peeping area to not 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 their light-emitting states according to the rotation of the light bar, thereby further changing the area through which collimated light is transmitted to the display panel, and realizing local dynamic anti-peeping of the display panel. [Brief explanation 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 any creative efforts. [Figure 1] 1 is a structural schematic diagram of one embodiment of a display device provided in the present application; [Figure 2] FIG. 1 is a structural schematic diagram of one embodiment of a backlight module provided in this application; [Figure 3] 1 is a structural schematic diagram of a first embodiment of a light bar and a driving assembly provided in the present application; FIG. [Figure 4a] 1 is a structural schematic diagram of a first embodiment of a light bar provided in this application; FIG. [Figure 4b] FIG. 2 is a structural schematic diagram of a second embodiment of the light bar provided in the present application. [Figure 4c] FIG. 10 is a structural schematic diagram of the third embodiment of the light bar provided in the present application. [Figure 4d] FIG. 10 is a structural schematic diagram of a fourth embodiment of the light bar provided in the present application. [Figure 4e] FIG. 10 is a structural schematic diagram of the fifth embodiment of the light bar provided in the present application. [Figure 4f] FIG. 10 is a structural schematic diagram of the sixth embodiment of the light bar provided in the present application. [Figure 4g] FIG. 10 is a structural schematic diagram of the seventh embodiment of the light bar provided in the present application. [Figure 4h] FIG. 10 is a structural schematic diagram of the eighth embodiment of the light bar provided in the present application. [Figure 5] FIG. 1 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. 10 is a structural schematic diagram of a third embodiment of the light bar and driving assembly provided in the present application. [Figure 8] FIG. 10 is a structural schematic diagram of a fourth embodiment of the light bar and driving assembly provided in the present application. [Figure 9] FIG. 10 is a structural schematic diagram of a fifth embodiment of the light bar and driving assembly provided in the present application. [Figure 10] 1 is a flowchart of an embodiment of the anti-peeping display method provided in the present application. [Figure 11] FIG. 2 is a modular schematic diagram of one embodiment of a control circuit provided in the present application. [Figure 12] FIG. 1 is a modular schematic diagram of a storage medium provided in the present application. DETAILED DESCRIPTION OF THE INVENTION

[0018] 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 clearly and completely described with reference to the drawings of the embodiments of the present application. It should be understood that the described embodiments are only a part 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 efforts fall 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 described. Therefore, a feature defined as "first," "second," or "third" can explicitly or implicitly include at least one of the features. 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, rear, etc.) in the embodiments of this application are used to interpret the relative positional relationship, movement status, etc. between each component in a specific position (e.g., as shown in the drawings), and if the specific position changes, the directionality changes accordingly. Furthermore, the terms "comprise," "have," 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 further include steps or units that are not recited, or may optionally further include other steps or units that are 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 such a combination in various places in the specification does not necessarily refer to the same embodiment, nor does it mean that the embodiments are mutually exclusive, independent, or alternative 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, drive 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-peeping 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 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 base plate 12, and the light bar 2 is installed on one side of the base plate 12. The dimming diaphragm 3 is installed on the side of the light bar 2 away from the base plate 12. The driving assembly 4 is installed on the base 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 back plate 1 further includes a side plate 11, which is interconnected with the back plate 1 and manufactured integrally, and which is installed on the side of the bottom plate 12 facing the light bar 2. In other embodiments, the back plate 1 may only include the bottom plate 12, which can be designed according to actual needs and is not particularly limited herein.

[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 base 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 base plate 12 and a prism layer 232 covering the second light-emitting element 231. 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 light emitted by 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 made of 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), but this is not a limitation. In this embodiment, both the first light emitting element 221 and the second light emitting element 231 are LEDs. The first light emitting element 221 and the second light emitting element 231 are arranged 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 to the circuit board 21, but this is not a limitation and can be designed according to actual needs.

[0031] The number of first light-emitting units 22 in the same light bar 2 is the same as the number of second light-emitting units 23. The first light-emitting units 22 and the second light-emitting units 23 may be spaced apart or may be 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, there are multiple light bars 2. The multiple first light emitting units 22 and the multiple 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 20 Hz or more, which can ensure the uniformity of the light emitted by 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 other embodiments, 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 a single row, and the first light-emitting units 22 and the second light-emitting units 23 may be alternately arranged along the extension direction of the light bar 2. 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 multiple rows, and one row may include only the first light-emitting units 22 or the second light-emitting units 23, i.e., multiple first light-emitting units 22 are arranged in one row and multiple second light-emitting units 23 are arranged in another row. And / or, the plurality of first light-emitting units 22 and the second light-emitting units 23 may be arranged in a single row, and the number of first light-emitting units 22 and second light-emitting units 23 in each row may be 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 alternately arranged 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 drive assembly 4 is installed between the bottom plate 12 and the circuit board 21 and 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 drive 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 its center at the center of the light bar 2 and has a radius R, which 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, there are multiple light bars 2, the display area 201 is rectangular, and the distance between the center of the light bar 2 at corner A of the rectangle and the vertex of corner A 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 areas 24 can cover the entire display area 201 of the display panel 200, thereby ensuring the uniformity of the light emission of the display area 201.

[0037] In this embodiment, the drive assembly 4 includes a plurality of servo motors 41, which are connected to the plurality of light bars 2 in one-to-one correspondence, and drive the light bars 2 to rotate. The servo motor 41 is disposed between the base plate 12 and the circuit board 21, connected to the circuit board 21, and disposed at the center of the circuit board 21, i.e., 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 there is one light bar 2, there is also one servo motor 41.

[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 connected to the circuit board 21. There is only one servo motor 41, and it 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 the center of the light bar 2. The first gear 421 and the second gear 422 mesh with each other. The first gears 421 and the second gears 422 are identical gears, but are positioned differently to ensure that all the first gears 421 rotate at a uniform speed, thereby ensuring that the rotational frequencies of the multiple light bars 2 are consistent. One second gear 422 is located on a perpendicular line Y to the center line X of two adjacent first gears 421. In this embodiment, one second gear 422 is located on a perpendicular line Y to the center line X of two adjacent first gears 421, and the center point of the second gear 422 is not located on the center line X of the two adjacent first gears 421. Compared to the embodiment in which the drive assembly 4 includes a servo motor 41, this embodiment drives and rotates the light bars 2 via gears, which can further ensure that the rotational speeds of the light bars 2 are consistent and improve the uniformity of the light emitted by the display panel 200. In other embodiments, the center point of the second gear 422 can be located on the center 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 collimated light passes through the dimming diaphragm 3 and is transmitted to the display panel 200. In the diffusion mode, diffused light passes through the dimming diaphragm 3 and is transmitted to the display panel 200. The first light-emitting unit 22 and the second light-emitting unit 23 continuously change their positions as the light bar 2 rotates, adjusting the light emission according to the mode switched by the dimming diaphragm 3 and changing the area through which the collimated light is transmitted to the display panel 200, thereby achieving localized 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. The faster the light bar 2 rotates, the faster the switching speed of the dimming diaphragm 3. The fewer the number of rows in which the plurality of first light emitting units 22 and the plurality of 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 first light-emitting units 22 is equal to the number of second light-emitting units 23. The rotation frequency of the light bar 2 is 20 Hz or more. 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 spaced apart from the dimming diaphragm 3. The support member 5 is disposed inside 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, thereby not interfering with the rotation of the light bar 2. The support plate 6 is a transparent support plate 6, and may be glass, or may include glass and steel mesh, or other materials, without any particular limitation herein. 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 surface 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 that 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 this 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 the structure 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 the extending 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 along the extension direction of the light bar 2. The rotation frequency of the light bar 2 is 10 Hz or more. 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 rotational stability 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 following differences: JPEG0007759502000002.jpg14170

[0049] JPEG0007759502000003.jpg17170 area 201 cannot be completely covered, and therefore the first light-emitting unit 22 and the second light-emitting unit 23 need to be arranged at a predetermined angle to the circuit board 21 to allow fill light into the display area 201 not covered by the circular rotation area 24 in order to ensure normal display of the display panel 200. Compared with the second embodiment of the light bar 2 and driving assembly 4 provided in the present application, the distance requirement between the light bar 2 of this embodiment is less precise 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 this 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 the structure 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 second light-emitting units 23 in the same light bar 2 are arranged in two rows, the number of first light-emitting units 22 and second light-emitting units 23 in each row is the same, and the alternating arrangement order of the first light-emitting units 22 and second light-emitting units 23 in each row is different, so that the first light-emitting units 22 and second light-emitting units 23 in the first row are centrally symmetrical to the first light-emitting units 22 and second light-emitting units 23 in the second row. The rotation frequency of the light bar 2 is 10 Hz or more. Compared with the second embodiment of the light bar 2 and driving assembly 4 provided herein, the light bar 2 of this embodiment has better rotation stability, a slower rotation speed, and better light emission uniformity of the display panel 200.

[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 rotating 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 this 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 the structure 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 light bar 2 is one.

[0056] The number of light bar 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 driving assembly 4 provided in the present application, the installation method of the light bar 2 in this embodiment is simpler and the process is easier.

[0057] The embodiments of the present application show only a few 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 installed 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 installed on the circuit board 21. The dimming diaphragm 3 is located on the side of the light bar 2 away from the bottom plate 12, and the dimming diaphragm 3 has a diffuse mode and a translucent mode. The driving assembly 4 is located 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 diffused 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 as the light bar 2 rotates, 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 the power consumption of the light bar 2.

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

[0060] As shown in FIG. 10, FIG. 10 is a flowchart of one embodiment of the anti-peeping display method provided in this application.

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

[0062] S1: Check the anti-peeping 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-peeping area. The display screen within the anti-peeping 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 diffused modes.

[0065] Specifically, the light control diaphragm is controlled to alternate between a transparent mode and a diffusion mode according to the requirements for preventing 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-peeping 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-peeping 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-peeping area can be seen from a frontal 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; the faster the light bar 2 rotates, the faster the switching speed of the dimming diaphragm 3.

[0067] In one embodiment, the plurality of first light-emitting units 22 and the plurality of second light-emitting units 23 of each light bar 2 are arranged in a row, and the number of first light-emitting units 22 is the same as the number of second light-emitting units 23. The rotation frequency of the light bar 2 is 20 Hz or more. 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, the rotation frequency of the light bar 2 is 10 Hz or more, and the dimming diaphragm 3 is switched at least 10 times per second.

[0069] The fewer the number of rows of the first light-emitting units 22 and the second light-emitting units 23 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-peeping area is controlled not to emit light, and the second light-emitting unit rotated into the anti-peeping 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 into the anti-peeping 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 pass through the dimming diaphragm 3 and be transmitted to the display panel 200. The first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peeping area emit light, or neither the first light-emitting unit 22 nor the second light-emitting unit 23 outside the anti-peeping area emits light. If the brightness of the display screen in the anti-peeping area is insufficient, the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peeping area can emit light to improve the brightness of the display screen in the anti-peeping area.

[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-peeping 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 anti-peeping area are controlled so as not to emit light. The first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peeping area emit light, or neither the first light-emitting unit 22 nor the second light-emitting unit 23 outside the anti-peeping area emits 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 units 22 outside the anti-peeping area do not emit light, but the second light-emitting units 23 do emit light; in the diffusion mode, when neither the first light-emitting units 22 nor the second light-emitting units 23 within the anti-peeping area emit light, the entire display area 201 is an anti-peeping area. In both the transparent mode and the anti-peeping mode, both the first light-emitting units 22 and the second light-emitting units 23 outside the anti-peeping area must not emit light, otherwise the image on the display panel 200 cannot be displayed normally. Whether the dimming diaphragm 3 first switches to the transparent mode or the diffusion mode can be designed according to actual needs and is not limited herein.

[0076] In a first specific embodiment, an anti-peeping area is determined, and in response to the dimming diaphragm 3 switching to the transparent mode, the first light-emitting unit 22 that has rotated into the anti-peeping area is controlled not to emit light and the second light-emitting unit 23 is controlled to emit light, and neither the first light-emitting unit 22 nor the second light-emitting unit 23 outside the anti-peeping area is controlled to emit light. In response to the dimming diaphragm 3 switching to the diffusion mode, the first light-emitting unit 22 nor the second light-emitting unit 23 that has rotated into the anti-peeping area is controlled not to emit light, and the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peeping area are controlled to emit light.

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

[0078] In a third specific embodiment, an anti-peeping area is determined, and in response to the dimming diaphragm 3 switching to the transparent mode, the first light-emitting unit 22 that has rotated into the anti-peeping 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-peeping area are controlled to emit light. In response to the dimming diaphragm 3 switching to the diffusion mode, both the first light-emitting unit 22 and the second light-emitting unit 23 that have rotated into the anti-peeping 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-peeping area are controlled to emit light.

[0079] This application provides an anti-peeping display method applicable to a display device 500. The anti-peeping display method includes: identifying an anti-peeping area; controlling a dimming diaphragm to alternately switch between a transparent mode and a diffusion mode; controlling the first light-emitting unit 22 and the second light-emitting unit 23 that have rotated into the anti-peeping area to not emit light and the second light-emitting unit 23 to emit light in response to the dimming diaphragm 3 switching to the transparent mode; and controlling the first light-emitting unit 22 and the second light-emitting unit 23 that have rotated into the anti-peeping area to not 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 continuously change positions with the rotation of the light bar 2 to adjust the light-emitting state, thereby changing the area through which collimated light is transmitted to the display panel 200, thereby realizing local dynamic anti-peeping 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-peeping 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-peeping 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 to receive an image signal and control the display panel 200 to display an image according to the image signal.

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

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

[0085] In a second specific embodiment, the anti-peeping module 302 first determines the anti-peeping 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-peeping area to not emit light and the second light-emitting unit 23 to emit light, controls the first light-emitting unit 22 outside the anti-peeping area to emit light or controls both the first light-emitting unit 22 and the second light-emitting unit 23 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 that have rotated into the anti-peeping area to not emit light, and controls both the first light-emitting unit 22 and the second light-emitting unit 23 outside the anti-peeping area to not emit light.

[0086] In a third specific embodiment, the anti-peeping module 302 first determines the anti-peeping 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-peeping area not to emit light and 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-peeping 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 that have rotated into the anti-peeping area not to emit light, and controls the first light-emitting unit 22 and / or the second light-emitting unit 23 outside the anti-peeping area to emit light.

[0087] In one embodiment, the anti-peeping module 302 may be used to control the first light-emitting unit 22 that has rotated into the non-display area 202 of the display panel 200 not to emit light, and to control the second light-emitting unit 23 that has rotated into the non-display area 202 of the display panel 200 not to emit light. Because 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 from the sides can be avoided and the power consumption of the display device 500 can be reduced. In another embodiment, the anti-peeping module 302 may be used to control the first light-emitting unit 22 that has rotated into the non-display area 202 of the display panel 200 not to emit light, or to control the second light-emitting unit 23 that has 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 this application.

[0089] The present application further provides a storage medium 400, which stores a program file 401. By executing the program file 401, the above-described anti-peeping display method for the display device 500 can be realized, thereby enabling the display device 500 to achieve local dynamic anti-peeping. 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, or a network device) or a processor to execute all or part of the steps of various implementation methods of the present application. The storage device can include media 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, or a tablet.

[0090] The above are embodiments of the present application and do 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 any directly or indirectly applicable to other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A peeping prevention display method applied to 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, and 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 base 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 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; Here, the anti-peeping display method includes: Checking the anti-peeping 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-peeping 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 into the peeping prevention area emits light; A method for preventing peeping, including:

2. The anti-peeping display method comprises: In response to the dimming diaphragm being switched to the transparent mode, the first light-emitting unit rotated to the anti-peeping 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 peeping prevention area to emit light, or controlling the first light-emitting unit and the second light-emitting unit outside the peeping prevention area not to emit light; The method for preventing peeping according to claim 1 , comprising:

3. The anti-peeping display method comprises: 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 into the peeping prevention area emits light; Controlling the first light-emitting unit and / or the second light-emitting unit outside the peeping prevention area to emit light, or controlling the first light-emitting unit and the second light-emitting unit outside the peeping prevention area not to emit light; The method for preventing peeping according to claim 1 , comprising:

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

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

6. A control circuit for realizing anti-peeping 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 backplate includes a bottom plate; The light bar is disposed 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 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 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 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; 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 based on the image signal, where the control circuit further includes an anti-peeping module; The anti-peeping module comprises: receiving an anti-peeping signal and confirming an anti-peeping area; controlling the dimming diaphragm to alternate between the transparent mode and the diffuse mode; In response to the dimming diaphragm switching to the transparent mode, controlling the first light-emitting unit rotated to the anti-peeping area not to emit light and controlling the second light-emitting unit 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-peeping area so that neither of them emits light in response to the dimming diaphragm switching to the diffusion mode.

7. The anti-peeping module comprises: In response to the light-adjusting diaphragm switching to the transparent mode, the first light-emitting unit and the second light-emitting unit outside the peeping prevention area are controlled not to emit light, and in response to the light-adjusting diaphragm switching to the diffusion mode, the first light-emitting unit and / or the second light-emitting unit outside the peeping prevention area are controlled to emit light; or In response to the light-adjusting diaphragm switching to the transparent mode, the first light-emitting unit outside the anti-peeping 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-adjusting diaphragm switching to the diffusion mode, the first light-emitting unit outside the anti-peeping area is controlled not to emit light, or 7. The control circuit according to claim 6, wherein the control circuit is used to control the first light-emitting unit and / or the second light-emitting unit outside the anti-peeping 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-peeping area to emit light in response to the dimming diaphragm switching to the diffusion mode.

8. The anti-peeping module comprises: Controlling the first light-emitting unit rotated to the non-display area of ​​the display panel so that it does not emit light; and / or The control circuit according to claim 6 , which is used to control 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 backplate includes a bottom plate; The light bar is disposed 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 disposed on the circuit board; the dimming diaphragm is disposed on a side of the light bar away from the base 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, the circular rotation areas of two adjacent light bars partially overlap, and the rotation phase difference between the two adjacent light bars when rotating is π / 2 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 around 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 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 the plurality of light bars in a one-to-one correspondence, and the servo motors driving the light bars to rotate; or 10. 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 and rotates the gear set, and the gear set drives and rotates the plurality of light bars.

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

Images