Mini led halo elimination method and display screen system

Abstract

The present application relates to a MINI LED halo elimination method and a display screen system, which detects the position of the human head through a millimeter wave radar. If the position of the human head is located in an effective area, the adaptive halo elimination mode is entered. The position of the human head is determined to be on the left side or the right side of the central axis of the effective area according to the position information of the human head. The distance between the human head and the display device and the offset angle are obtained. The corresponding sub-lamp plate is adjusted by the deflection adjustment unit according to the calculated offset angle and the deflection adjustment direction. The brightness of the corresponding sub-lamp plate is adjusted by the LED driving module according to the calculated brightness. The halo is automatically eliminated according to the angle and position of the current viewer. If there are multiple viewers and they are distributed on the left and right sides of the display screen, the mode of not considering the angle of the viewer is entered, and the halo is simply eliminated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of MINI LED light halo elimination, and more particularly to a MINI LED light halo elimination method and display screen system. BACKGROUND

[0002] Mini LED improves brightness, contrast, color restoration in picture quality, and saves energy on a relative basis, and also improves service life. The most likely situation for light halo of Mini LED display device is 1. caused by the relationship between the played content, the junction of black and white or color picture, 2. the other is because of the relationship between the viewing angle of the viewer, the light halo when viewing obliquely is very obvious.

[0003] The current Mini LED light halo elimination scheme is mostly developed for the first kind, but there is no good solution for the second kind, and a MINI LED light halo elimination method and display screen system that can better target the second kind while taking into account the first kind are needed to fill the industry gap. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a MINI LED light halo elimination method and a display screen system applying the method to solve the above-mentioned defects of the prior art.

[0005] The technical scheme adopted by the present application to solve the technical problem is:

[0006] A MINI LED light halo elimination method is constructed, comprising the following steps:

[0007] The MINI LED lamp panel of the display device using MINI LED as a backlight source is divided into a plurality of sub-lamp panels in a matrix distribution, a gap between two adjacent sub-lamp panels, and a soft film connected by light shielding, and a deflection adjustment unit for adjusting the deflection angle of each sub-lamp panel is configured;

[0008] According to the detection range of the millimeter wave radar configured on the display device, the front side area of the display device is divided into a blind area and an effective area;

[0009] The position of the human head is detected by the millimeter wave radar, and if the position of the human head is located in the blind area, the LED driving module turns off the MINI LED backlight;

[0010] If the position of the human head is located in the effective area, the adaptive light halo elimination mode is entered, and the following operations are performed in the adaptive light halo elimination mode:

[0011] Real-time acquisition of display image information and human head position information; determine the current affected by the halo sub-light board according to the display image information; according to the human head position information to determine the current human head is located in the effective area of the center axis of the left side or right side position, and the distance and offset angle of the human head from the display device; At this time, if the left and right sides of the center axis of the effective area have a human body, adjust according to the set tilt adjustment mode and end this adjustment;

[0012] According to the current human head is located in the effective area of the center axis of the left side or right side position corresponding to the determination of the deflection adjustment direction of the sub-light board is right or left,

[0013] According to the offset angle of the human head from the display device, the offset angle of the sub-light board affected by the halo is calculated, and the deflection adjustment unit is controlled according to the calculated offset angle and the deflection adjustment direction to adjust the sub-light board.

[0014] According to the distance of the human head from the display device, the brightness of the sub-light board affected by the halo is calculated, and the LED driving module is controlled according to the calculated brightness to adjust the brightness of the sub-light board.

[0015] The MINI LED halo elimination method, wherein the offset angle of the sub-light board affected by the halo is calculated according to the offset angle of the human head from the display device, adopts:

[0016] ;

[0017] Wherein Z is the offset angle of the sub-light board affected by the halo, e and f are constants, and X is the offset angle of the human head from the display device.

[0018] The MINI LED halo elimination method, wherein the brightness of the sub-light board affected by the halo is calculated according to the distance of the human head from the display device, adopts:

[0019] ;

[0020] Wherein M is the brightness of the sub-light board affected by the halo, c and d are constants, and Y is the distance of the human head from the display device.

[0021] The MINI LED halo elimination method, wherein the blind area includes a near distance detection blind area, a far distance detection blind area and an invalid area.

[0022] The near distance detection blind area is an area with a horizontal distance from the display device less than a first set value;

[0023] The remote detection blind area is an area with a horizontal distance greater than a second set value from the display device; the second set value is greater than the first set value.

[0024] The invalid area is a detection blind area of the millimeter wave radar located on the left and right sides of the valid area.

[0025] The MINI LED halo elimination method, wherein, if the left and right sides of the central axis of the valid area are both occupied by a human body, the adjustment is performed in a set tilt adjustment mode, and the adjustment adopts:

[0026] If the surrounding sub-lamp panels of the sub-lamp panel affected by the halo are not affected by the halo, the surrounding sub-lamp panels of the sub-lamp panel affected by the halo are adjusted to tilt inward by a set angle on the side of the sub-lamp panel affected by the halo.

[0027] If the sub-lamp panel affected by the halo has multiple and forms a semi-ring or a ring, the sub-lamp panel affected by the halo is adjusted to tilt outward by a set angle on the side of the sub-lamp panel away from the center of the semi-ring or the ring.

[0028] The MINI LED halo elimination method, wherein the deflection adjustment unit comprises a rotating frame limiting the deflection direction of the sub-lamp panel to the X-axis and the Z-axis, an elastic reset member resetting the sub-lamp panel, a rotating disc pushing the sub-lamp panel to deflect along the X-axis and the Z-axis, and a micro motor driving the rotating disc.

[0029] The MINI LED halo elimination method, wherein the rotating frame comprises a central shaft fixed with the display back plate, an end of the central shaft away from the display back plate is rotationally provided with a first rotating shaft rotating along the X-axis and a first concave limiting seat rotationally connected with the first rotating shaft; a side of the first rotating shaft away from the central shaft is rotationally provided with a second rotating shaft rotating along the Z-axis and a second concave limiting seat rotationally connected with the second rotating shaft; and the second rotating shaft is fixedly connected with the sub-lamp panel.

[0030] The MINI LED halo elimination method, wherein the first concave limiting seat is provided with a first rotating shaft pin rotationally connected with the first rotating shaft, and the second concave limiting seat is provided with a second rotating shaft pin rotationally connected with the second rotating shaft; and the elastic reset member comprises a first torsional spring resetting the first rotating shaft and sleeved on the first rotating shaft pin, and a second torsional spring resetting the second rotating shaft and sleeved on the second rotating shaft pin.

[0031] The MINI LED light halo elimination method, wherein two ends of the first rotating shaft are provided with first acting blocks, two ends of the second rotating shaft are provided with second acting blocks, and the side surfaces of the two first acting blocks and the two second acting blocks close to the rotating disc are coplanar; the rotating disc is arranged on the central shaft, the outer side surface of the rotating disc is provided with a gear ring, and the movable end of the micro motor is provided with a gear engaged with the gear ring; the rotating disc is provided with an extrusion inclined surface for extruding the two first acting blocks and the two second acting blocks.

[0032] A display screen system for implementing the MINI LED light halo elimination method, wherein the system comprises a MINI LED lamp plate, a display screen, a deflection adjustment unit, a millimeter wave radar, a Scaler module and an LED driving module.

[0033] The MINI LED lamp plate is divided into a plurality of sub-lamp plates distributed in a matrix, and gaps exist between adjacent two sub-lamp plates, and the gaps are connected by a light-proof soft film, and the deflection adjustment unit can adjust the deflection angle of each sub-lamp plate.

[0034] The millimeter wave radar is used for human head position detection, and outputs the detection result to the Scaler module.

[0035] The Scaler module divides the front side area of the display device into a blind area and an effective area; receives the millimeter wave radar detection result, and if the human head position is located in the blind area, the LED driving module turns off the MINI LED backlight; if the human head position is located in the effective area, the adaptive halo elimination mode is entered, and the following operations are performed in the adaptive halo elimination mode:

[0036] Real-time acquisition of display image information and human head position information;

[0037] Determination of the sub-lamp plate currently affected by the halo according to the display image information;

[0038] Judgment of whether the current human head is located on the left side or the right side of the central axis of the effective area according to the human head position information, and acquisition of the distance of the human head from the display device and the deflection angle; if there is a human on both sides of the central axis of the effective area, the inclination adjustment mode is adjusted according to the set inclination adjustment mode and the current adjustment is ended.

[0039] The deflection adjustment direction of the determined sub-lamp plate corresponding to the left side or the right side of the central axis of the effective area where the current human head is located is right or left;

[0040] According to the offset angle of the human head from the display device, the offset angle of the sub-light panel currently affected by the halo is calculated, and the deflection adjustment unit is controlled according to the calculated offset angle and the deflection adjustment direction to adjust the sub-light panel correspondingly.

[0041] According to the distance between the human head and the display device, the brightness of the sub-light panel currently affected by the halo is calculated, and the LED driving module is controlled according to the calculated brightness to adjust the brightness of the sub-light panel correspondingly.

[0042] The beneficial effects of the present application are that the application can automatically eliminate halo adjustment according to the angle and position of the current viewer, and also takes into account the automatic black screen function if there is no viewer, and if there are multiple viewers and they are distributed on the left and right sides of the display screen, then the viewer angle is not considered and the halo is simply eliminated. The application is more reasonable than the existing halo elimination method and can effectively improve the display effect of the MINI LED screen. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the present application will be further described below with reference to the drawings and embodiments. The drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor:

[0044] Figure 1 is a MINI LED halo elimination method flow chart of a preferred embodiment of the present application;

[0045] Figure 2 is a MINI LED halo elimination method blind area distribution schematic diagram of a preferred embodiment of the present application;

[0046] Figure 3 is a first halo elimination example diagram of a MINI LED halo elimination method of a preferred embodiment of the present application;

[0047] Figure 4 is a second halo elimination example diagram of a MINI LED halo elimination method of a preferred embodiment of the present application;

[0048] Figure 5 is a third halo elimination example diagram of a MINI LED halo elimination method of a preferred embodiment of the present application;

[0049] Figure 6 is a sub-light panel soft film connection schematic diagram of a MINI LED halo elimination method of a preferred embodiment of the present application;

[0050] Figure 7The MINI LED halo elimination method deflection adjustment unit structure sectional view of the preferred embodiment of the present application is shown in the figure;

[0051] Figure 8 The MINI LED halo elimination method turntable top view of the preferred embodiment of the present application is shown in the figure;

[0052] Figure 9 The principle block diagram of the display screen system of the preferred embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the following will describe the technical scheme of the embodiments of the present application clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0054] The MINI LED halo elimination method of the preferred embodiment of the present application is shown in the figure, and reference is made to Figure 1 , which includes the following steps: Figures 2-8

[0055] S01: The MINI LED lamp plate of the display device with MINI LED as the backlight source is divided into multiple sub-lamp plates (multiple lamp beads can be arranged on a single sub-lamp plate) distributed in a matrix, a gap is arranged between two adjacent sub-lamp plates, and the adjacent sub-lamp plates are connected through a light-proof soft film (reference Figure 6 , the back surfaces of the adjacent sub-lamp plates are connected through a soft film), and a deflection adjustment unit capable of adjusting the deflection angle of each sub-lamp plate is arranged;

[0056] S02: According to the detection range of the millimeter wave radar arranged on the display device, the front side area of the display device is divided into a blind area and an effective area;

[0057] S03: The position of the human head is detected by the millimeter wave radar, and if the position of the human head is located in the blind area, the LED driving module turns off the MINI LED backlight;

[0058] S04: If the position of the human head is located in the effective area, the adaptive halo elimination mode is entered, and the following operations are performed in the adaptive halo elimination mode:

[0059] ​S05: Real-time acquisition of display image information and human head position information; determining the current halo-affected sub-lamp panel according to the display image information; judging whether the current human head is located at the left side or right side of the center axis of the effective area according to the human head position information, and acquiring the distance and offset angle of the human head from the display device; at this time, if there are humans on both sides of the center axis of the effective area, the tilt adjustment mode is adjusted according to the set tilt adjustment mode and the adjustment is ended;

[0060] S06: According to the left side or right side of the center axis of the effective area where the current human head is located, the deflection adjustment direction of the determined sub-lamp panel is right or left,

[0061] S07: According to the offset angle of the human head from the display device, the offset angle of the current halo-affected sub-lamp panel is calculated, and the deflection adjustment unit is controlled according to the calculated offset angle and the deflection adjustment direction to adjust the sub-lamp panel;

[0062] S08: According to the distance of the human head from the display device, the brightness of the current halo-affected sub-lamp panel is calculated, and the LED driving module is controlled according to the calculated brightness to adjust the brightness of the sub-lamp panel;

[0063] The application can automatically eliminate halo adjustment according to the angle and position of the current viewer, and also has the function of automatically blackening the screen if there is no viewer. In addition, if there are multiple viewers and they are distributed on the left and right sides of the display screen, the application enters a mode that does not consider the angle of the viewer and simply eliminates halo. Compared with the existing halo elimination method, the application is more reasonable and can effectively improve the display effect of the MINI LED screen.

[0064] The blind area includes a near-range detection blind area, a far-range detection blind area, and an invalid area. The near-range detection blind area is an area with a horizontal distance from the display device less than a first set value. The far-range detection blind area is an area with a horizontal distance from the display device greater than a second set value. The second set value is greater than the first set value. The invalid area is a detection blind area of the millimeter wave radar located on the left and right sides of the effective area.

[0065] The waveform of the millimeter wave transmission is approximately a cone, and the cone range can be determined by the lens. Therefore, the millimeter wave also has a blind area, which is approximately within 2 centimeters, that is, the human body cannot be recognized when it is within 2 centimeters from the millimeter wave physical module. There is also a far distance greater than about 10 meters, that is, the human body cannot be recognized when it is greater than 10 meters from the millimeter wave physical module. When the human body is within the blind area, the image module notifies the LED driving to turn off the light, which is to protect the eyes and save energy.

[0066] AsFigure 2 As shown, A is a display device, E is a near distance detection blind area, D is a far distance detection blind area, B and C are invalid areas, A1, B1, and C1 form a conical millimeter wave detection range, the angle formed is 180 degrees, and D1 is the center point of A1 to C1;

[0067] A to E1 is set to 30 cm, which is set according to the size of the display device and the optimal viewing distance range. E1 to A1 is set to 10 meters, which is set according to the maximum detection distance of the millimeter wave radar. F is set to a human head, which is a point, and the intersection point obtained according to the radar measurement of the up-down distance / 2 and the left-right distance / 2 is a circle point;

[0068] Case one, when the human body is not in the range of A1, B1, and C1, it is considered to be a blind area, so the image module notifies the mini LED backlight to be turned off by the LED driver;

[0069] Case two, the human body position is determined in the following way:

[0070] Assuming that the angle between A1 and C1 is 160 degrees, then with D1 as the center, the left and right angles are 80 degrees each, A1 to D1 is 0-80 degrees, and D1 to C1 is 80-160 degrees. When F is in the 0-80 degree angle, it is left viewing, and the lamp panel affected by the halo is tilted to the right at this time. When F is in the 80-160 degree angle, it is right viewing, and the lamp panel affected by the halo is tilted to the left at this time,

[0071] Set the angle to X, the distance to Y, the lamp panel tilt angle to Z, and the lamp brightness to M.

[0072] When X is fixed, the larger Y is, the smaller Z is, and the brighter M is. Assuming Y is 1 meter and Z is tilted by 5 degrees, when Y is 10 meters, Z is tilted by 1 degree, assuming Y is 1 meter, M is 200, and when Y is 10 meters, M is 1000

[0073] When Y is fixed, X is between 0-80 degrees, X is equal to 0, Z is 10 degrees, and M is 1000. X is equal to 80, Z is 0 degrees, and M is 200;

[0074] Then the offset angle of the current sub-lamp panel affected by the halo is calculated according to the offset angle of the human head relative to the display device:

[0075] When is fixed, between 0~80 degrees, set ;

[0076] When , ; when , ;

[0077] Substitute it into the relationship equation to get the equation group

[0078] From the first equation, we have Substitute the above equation into the second equation .

[0079] Then ; wherein Z is the offset angle of the current halo-affected sub-light panel, e and f are both constants, which will change according to actual installation and debugging; X is the offset angle of the human head distance from the display device;

[0080] The brightness of the current halo-affected sub-light panel is calculated according to the distance of the human head from the display device, which adopts:

[0081] Let the distance be and the brightness be The relationship between the distance and the brightness is .

[0082] When , ; when , .

[0083] Substitute the above equation into the relationship, we can get the equation group

[0084] Subtract the first equation from the second equation , we get .

[0085] That is , which is simplified to , and the solution is .

[0086] Substitute the above equation into , we can get , and the solution is . Then

[0087] ;

[0088] Wherein M is the brightness of the current halo-affected sub-light panel, and will change according to actual installation and debugging; Y is the distance of the human head from the display device.

[0089] Preferably, at this time, if there are people on both sides of the center axis of the effective area, the adjustment is made according to the set tilt adjustment mode, which adopts:

[0090] ​​​​If the sub-light panels around the sub-light panel affected by the halo are not affected by the halo, then adjust the multiple sub-light panels around the sub-light panel affected by the halo to tilt inwards towards the side of the sub-light panel affected by the halo by a set angle.

[0091] If there are multiple sub-lamp panels affected by the halo and they form a semi-ring or a ring, adjust the sub-lamp panels affected by the halo to tilt outward at a set angle toward the side of the sub-lamp panel away from the center of the semi-ring or ring.

[0092] like Figures 3-5 As shown:

[0093] Taking a nine-grid layout as an example, once installed, the halo effect range is fixed. The image is analyzed based on the grayscale values ​​of each area. Assuming area 5 is pure white and the remaining areas are black, the LEDs in the black areas are off. Since the LED beam divergence angle is 120 degrees, areas 12346789 will be affected by the halo effect of area 5. Therefore, the image module uses a motor to tilt areas 12346789 outwards around a circle as a reference point. Figure 3 As we can see, the affected areas of 1379 and 2468 are the same, so the tilt angles of different areas are also different. 1379 is tilted outward by 1 degree. Assuming the relationship between the light path and the tilt angle is 3, 2468 is tilted outward by 3 degrees, as shown in the figure. At this time, because light panels 12346789 are tilted, the height of light panel 5 will be lower than the contact edge between light panels 12346789 and light panel 5. In addition, the black film material in the gap between the light panels allows all the light to be concentrated on the light panel in area 5, achieving the effect of eliminating halo.

[0094] Assuming that area 5 of the light panel is a black screen and 12346789 is a white screen, then area 5 is affected by the halo. There are two ways to deal with this. One is to raise the light panel 5 so that the black film absorbs or reflects the scattered light back to the light panels 12346789, thereby eliminating the halo in area 5. The above is an elimination method without the aid of millimeter-wave radar. Tilting the light panel can change the distance and range of the light beam angle of the LED beads.

[0095] Using millimeter-wave radar, when a human viewing angle is detected, the image processing module receives the data and tilts the LED panel in the opposite direction to eliminate halos. When the radar module detects a human in each direction, as shown in the image, area 5 is white, and areas 12346789 are tilted inwards to achieve a focused light effect, as the LED panel itself reflects light. The tilt angle is linked to the human viewing angle. It's important to note that the focused light setting should not affect the overall viewing experience. Excessive settings will result in bright spots on the screen. If this occurs, the image module can be adjusted to reduce the brightness of the LEDs in area 5 to ensure uniform overall image brightness.

[0096] As Figure 7 shown, with reference to Figure 8 , the deflection adjustment unit includes a rotating frame that defines the deflection direction of the sub-lamp panel 1 as the X-axis and the Z-axis, an elastic reset member that resets the sub-lamp panel 1, a rotating disc 3 that pushes the sub-lamp panel 1 to deflect along the X-axis and the Z-axis, and a micro motor 4 that drives the rotating disc; the rotating frame includes a central shaft 20 fixed to the back plate of the display, the end of the central shaft 20 away from the back plate of the display is rotatably provided with a first rotating shaft 21 that rotates along the X-axis and a first concave limiting seat 22 that rotatably connects the first rotating shaft; the side of the first rotating shaft 21 away from the central shaft is rotatably provided with a second rotating shaft 23 that rotates along the Z-axis and a second concave limiting seat 24 that rotatably connects the second rotating shaft; the second rotating shaft 23 is fixedly connected with the sub-lamp panel 1; the first concave limiting seat 22 is provided with a first rotating shaft pin 25 that rotatably connects the first rotating shaft 21, and the second concave limiting seat 24 is provided with a second rotating shaft pin 26 that rotatably connects the second rotating shaft 23; the elastic reset member includes a first torsion spring 27 that resets the first rotating shaft and is sleeved on the first rotating shaft pin, and a second torsion spring 28 that resets the second rotating shaft and is sleeved on the second rotating shaft pin; the two ends of the first rotating shaft 21 are each provided with a first action block 210, and the two ends of the second rotating shaft 23 are each provided with a second action block; the surfaces of the two first action blocks and the two second action blocks on the side close to the rotating disc 3 are coplanar; the rotating disc 3 is rotatably provided on the central shaft 20, the outer surface of the rotating disc 3 is provided with a gear ring 30, and the movable end of the micro motor 4 is provided with a gear 40 that engages with the gear ring; the rotating disc 3 is provided with an extrusion inclined surface 31 that extrudes the two first action blocks and the two second action blocks;

[0097] When running, the micro motor 4 drives the rotating disc 3 to rotate through the meshing action of the gear 40 and the gear ring 30 (preferably, the outer diameter of the gear 40 is smaller, and a reduction gear set is formed by cooperating with the gear ring 30 to reduce speed and increase torque); when the extrusion inclined surface 31 acts on the two first action blocks 210 respectively, it will correspondingly drive the sub-lamp panel 1 to deflect left and right; when the extrusion inclined surface 31 acts on the two second action blocks respectively, it will correspondingly drive the sub-lamp panel 1 to deflect up and down, completing the deflection adjustment process; the overall structure is simple, reasonable and compact, with high space utilization.

[0098] A display screen system for implementing the MINI LED halo elimination method as described above, as Figure 9 shown, the system includes a MINI LED lamp panel 100, a display screen 101, a deflection adjustment unit 102, a millimeter wave radar 103, a Scaler module 104, and an LED driving module 105;

[0099] The MINI LED lamp panel is divided into a plurality of sub-lamp panels distributed in a matrix, a gap between two adjacent sub-lamp panels, and the gap is connected by a light-proof soft film, and the deflection adjusting unit can adjust the deflection angle of each sub-lamp panel.

[0100] The millimeter wave radar is used to detect the position of the human head and output the detection result to the Scaler module.

[0101] The Scaler module divides the front side area of the display device into a blind area and an effective area, receives the detection result of the millimeter wave radar, and if the position of the human head is in the blind area, the LED driving module turns off the MINI LED backlight, and if the position of the human head is in the effective area, the adaptive halo elimination mode is entered, and the following operations are performed in the adaptive halo elimination mode:

[0102] Real-time acquisition of display image information and human head position information;

[0103] Determination of the sub-lamp panel currently affected by the halo according to the display image information;

[0104] Judgment of the left or right position of the human head relative to the center axis of the effective area according to the human head position information, and acquisition of the distance of the human head from the display device and the deflection angle; if there is a human head on both sides of the center axis of the effective area, the inclination adjustment mode is adjusted according to the set inclination adjustment mode and the adjustment is ended;

[0105] The deflection adjustment direction of the sub-lamp panel corresponding to the left or right position of the human head relative to the center axis of the effective area is determined as right or left;

[0106] Calculation of the deflection angle of the sub-lamp panel currently affected by the halo according to the deflection angle of the human head from the display device, and control of the deflection adjusting unit for corresponding sub-lamp panel adjustment according to the calculated deflection angle and the deflection adjustment direction;

[0107] Calculation of the brightness of the sub-lamp panel currently affected by the halo according to the distance of the human head from the display device, and control of the LED driving module for corresponding sub-lamp panel brightness adjustment according to the calculated brightness.

[0108] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all such improvements and changes shall fall within the scope of the appended claims of the present application.

Claims

1. A method for eliminating MINI LED halo, characterized in that, Includes the following steps: The MINI LED backlight board of the display device using MINI LED as the backlight is divided into multiple sub-light boards arranged in a matrix. The gap between two adjacent sub-light boards is connected by an opaque soft film, and a deflection adjustment unit is configured to adjust the deflection angle of each sub-light board. Based on the detection range of the millimeter-wave radar configured on the display device, the area in front of the display device is divided into a blind zone and an effective zone; The position of the human head is detected by millimeter-wave radar. If the human head is located in the blind zone, the LED driver module turns off the MINI LED backlight. If the human head is located within the effective area, the system enters adaptive halo removal mode. While in adaptive halo removal mode, the following operations are performed: The system acquires real-time display image information and human head position information; determines the sub-light panel currently affected by the halo based on the display image information; judges whether the human head is located to the left or right of the center axis of the effective area based on the human head position information, and acquires the distance and offset angle of the human head from the display device; if there are human bodies on both the left and right sides of the center axis of the effective area, it adjusts according to the set tilt adjustment method and ends the current adjustment. Based on the current position of the human head on the left or right side of the central axis of the effective area, the deflection adjustment direction of the sub-lamp panel is determined to be either right or left. The offset angle of the sub-lamp panel currently affected by the halo is calculated based on the offset angle of the human head from the display device, and the deflection adjustment unit is controlled to adjust the sub-lamp panel accordingly based on the calculated offset angle and the deflection adjustment direction. The brightness of the sub-lamp panels currently affected by the halo is calculated based on the distance between the human head and the display device, and the LED driver module is controlled to adjust the brightness of the sub-lamp panels accordingly based on the calculated brightness.

2. The method for eliminating MINI LED halo according to claim 1, characterized in that, The method for calculating the offset angle of the sub-light panel currently affected by the halo based on the offset angle of the human head from the display device is as follows: ； Where Z is the offset angle of the sub-lamp panel currently affected by the halo, e and f are constants, and X is the offset angle of the human head from the display device.

3. The method for eliminating MINI LED halo according to claim 1, characterized in that, The brightness of the sub-light panel currently affected by the halo is calculated based on the distance between the human head and the display device. ； Where M is the brightness of the sub-lamp panel currently affected by the halo, c and d are constants, and Y is the distance between the human head and the display device.

4. The method for eliminating MINI LED halo according to claim 1, characterized in that, The blind zone includes close-range detection blind zone, long-range detection blind zone, and invalid area; The near-range detection blind zone is the area where the horizontal distance from the display device is less than a first set value; The long-distance detection blind zone is the area where the horizontal distance from the display device is greater than a second set value; the second set value is greater than a first set value. The invalid area refers to the detection blind zone of the millimeter-wave radar located on the left and right sides of the effective area.

5. The method for eliminating MINI LED halo according to claim 1, characterized in that, If there are people on both sides of the central axis of the effective area at this time, the adjustment will be made according to the set tilt adjustment method: If the sub-light panels around the sub-light panel affected by the halo are not affected by the halo, then adjust the multiple sub-light panels around the sub-light panel affected by the halo to tilt inwards towards the side of the sub-light panel affected by the halo by a set angle. If there are multiple sub-light panels affected by the halo and they form a semi-ring or a ring, adjust the sub-light panels affected by the halo to tilt outward at a set angle toward the side of the sub-light panel away from the center of the semi-ring or ring.

6. The method for eliminating MINI LED halo according to claim 1, characterized in that, The deflection adjustment unit includes a rotating frame that limits the deflection direction of the sub-lamp panel to the X-axis and Z-axis, an elastic reset component for resetting the sub-lamp panel, a turntable that pushes the sub-lamp panel to deflect along the X-axis and Z-axis, and a micro motor that drives the turntable.

7. The method for eliminating MINI LED halo according to claim 6, characterized in that, The rotating frame includes a central shaft fixed to the back panel of the display. At one end of the central shaft opposite to the back panel of the display, a first rotating shaft rotating along the X-axis and a first concave limiting seat rotatably connected to the first rotating shaft are rotatably provided. On the side of the first rotating shaft opposite to the central shaft, a second rotating shaft rotating along the Z-axis and a second concave limiting seat rotatably connected to the second rotating shaft are rotatably provided. The second rotating shaft is fixedly connected to the sub-lamp panel.

8. The method for eliminating MINI LED halo according to claim 7, characterized in that, The first concave limiting seat is provided with a first rotating shaft pin rotatably connected to the first rotating shaft, and the second concave limiting seat is provided with a second rotating shaft pin rotatably connected to the second rotating shaft; the elastic reset member includes a first torsion spring sleeved on the first rotating shaft pin for resetting the first rotating shaft and a second torsion spring sleeved on the second rotating shaft pin for resetting the second rotating shaft.

9. The method for eliminating MINI LED halo according to claim 7, characterized in that, Both ends of the first rotating shaft are provided with first action blocks, and both ends of the second rotating shaft are provided with second action blocks. The surfaces of the two first action blocks and the two second action blocks near the turntable are coplanar. The turntable is rotatably mounted on the central shaft. A gear ring is provided on the outer surface of the turntable. The movable end of the micro motor is provided with a gear that meshes with the gear ring. The turntable is provided with a pressing inclined surface that presses against the two first action blocks and the two second action blocks.

10. A display screen system for implementing the MINI LED halo elimination method as described in any one of claims 1-9, characterized in that, The system includes a MINI LED light panel, a display screen, a deflection adjustment unit, a millimeter-wave radar, a scaler module, and an LED driver module; The MINI LED light panel is divided into multiple sub-light panels arranged in a matrix. There is a gap between two adjacent sub-light panels, and they are connected by an opaque soft film. The deflection adjustment unit can adjust the deflection angle of each sub-light panel. The millimeter-wave radar is used to detect the position of the human head and output the detection results to the Scaler module; The Scaler module divides the front area of ​​the display device into a blind zone and an effective zone; it receives the detection results from the millimeter-wave radar, and if the human head is located in the blind zone, the LED driver module turns off the MINI LED backlight. If the human head is located within the effective area, the system enters adaptive halo removal mode. While in adaptive halo removal mode, the following operations are performed: Real-time acquisition and display of image information and human head position information; The sub-light panels currently affected by the halo are determined based on the displayed image information; Based on the human head position information, determine whether the current human head is located to the left or right of the central axis of the effective area, and obtain the distance and offset angle of the human head from the display device; if there are human bodies on both the left and right sides of the central axis of the effective area, adjust according to the set tilt adjustment method and end the current adjustment. The direction of the sub-lamp panel's deflection adjustment is determined to be either to the right or to the left, based on the position of the human head on the left or right side of the center axis of the effective area. The offset angle of the sub-lamp panel currently affected by the halo is calculated based on the offset angle of the human head from the display device, and the deflection adjustment unit is controlled to adjust the sub-lamp panel accordingly based on the calculated offset angle and the deflection adjustment direction. The brightness of the sub-lamp panels currently affected by the halo is calculated based on the distance between the human head and the display device, and the LED driver module is controlled to adjust the brightness of the sub-lamp panels accordingly based on the calculated brightness.

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