LED display device capable of reducing dynamic blurring of vision

Abstract

The utility model relates to the technical field of display equipment, and provides LED display equipment capable of reducing visual dynamic blurring, the LED display equipment comprises a display panel, a backlight substrate and a plurality of LED light sources, and each LED light source comprises a light-emitting chip coupled to the backlight substrate; a light conversion layer disposed on the light-emitting chip and covering a light-emitting front surface of the light-emitting chip; a diffusion layer disposed on the light conversion layer; the first lens layer is connected to the backlight substrate and covers the diffusion layer, a plurality of optical Fresnel structures which are concentrically arranged are arranged on the emergent surface of the first lens layer, and each optical Fresnel structure is provided with a first surface facing the circle center and a second surface back to the circle center; the first face is configured to be parallel to light refracted on the incident face of the Fresnel lens, and the second face is configured to be in a hemispherical profile. The LED light source is provided with the first lens layer, and the first lens layer is provided with the optical Fresnel structure, so that the texture sense of a picture on the display panel is stronger, the picture quality is improved, and the effect of reducing dynamic blurring of vision is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display devices, and more particularly to an LED display device for reducing visual dynamic blur. BACKGROUND

[0002] An LED (light-emitting diode) display device includes thousands of LED chips arranged in a predetermined matrix to form pixel points. Each pixel point can include red, green and blue LED chips for generating a full-color image. Each LED pixel point is connected to a control circuit responsible for receiving signals from a control system and adjusting the brightness of each LED chip accordingly. By precisely controlling the brightness of each LED chip and the proportion of red, green and blue colors, a wide range of color display can be achieved and widely used in the field of television.

[0003] In daily life, people inevitably move and change positions when watching TV. When people observe the TV screen after moving, the picture will appear blurred, and visual dynamic blur will occur.

[0004] Therefore, the prior art still needs to be improved and developed. CONTENT OF THE INVENTION

[0005] The present application aims to provide an LED display device for reducing visual dynamic blur to solve the technical problem that the display device in the prior art is prone to cause visual dynamic blur.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide an LED display device for reducing visual dynamic blur, comprising a display panel, a backlight substrate and a plurality of LED light sources arranged in an array on the backlight substrate, the backlight substrate being arranged at the rear end face of the display panel, and the LED light source comprising:

[0007] a light-emitting chip coupled to the backlight substrate;

[0008] a light conversion layer arranged on the light-emitting chip and covering the light-emitting front face of the light-emitting chip, the light conversion layer being used for converting and mixing the light emitted by the light-emitting chip to emit white light;

[0009] a diffusion layer arranged on the light conversion layer for expanding the light-emitting angle of the white light;

[0010] A first lens layer is connected to the backlight substrate and covers the diffusion layer, the first lens layer has a plurality of concentric optical Fresnel structures on its exit surface, each optical Fresnel structure has a first surface facing the center and a second surface facing away from the center, the first surface is configured to be parallel to the refracted light on the entrance surface of the Fresnel lens, and the second surface is configured to be a hemispherical profile.

[0011] Further, the LED light source further comprises a second lens layer connected to the first lens layer and covering the exit surface of the first lens layer, the second lens layer has a plurality of concentric optical Fresnel structures on its exit surface, each optical Fresnel structure has a third surface facing the center and a fourth surface facing away from the center, the third surface is configured to be parallel to the refracted light on the entrance surface of the Fresnel lens, and the fourth surface is configured to be a concave arc surface.

[0012] Further, the first lens layer and the diffusion layer have a first spacing, the second lens layer and the first lens layer have a second spacing, and the sum of the first spacing and the second spacing is not greater than 5mm.

[0013] In some embodiments, the light-emitting chip is a mini LED, and the light-emitting chip is configured to have a circular cross-section of the light beam generated thereby.

[0014] Further, the light-emitting chip is a blue light chip, and the light conversion layer comprises a green light conversion layer and a red light conversion layer, the green light conversion layer and the red light conversion layer are sequentially arranged on the light-emitting chip and cover the light-emitting front surface of the light-emitting chip.

[0015] In some embodiments, the diffusion layer comprises a scattering layer and a reflective layer, the scattering layer is connected to the light-emitting surface of the light conversion layer, the reflective layer is connected to the light-emitting surface of the scattering layer, and the scattering layer and the reflective layer are both provided with diffusion particles, and the proportion of diffusion particles in the reflective layer is greater than the proportion of diffusion particles in the scattering layer.

[0016] Further, the LED display device for reducing visual dynamic blur further comprises:

[0017] A sensing unit is connected to the front end surface of the display panel for detecting position information of a target person.

[0018] A substrate adjusting mechanism is connected to the side of the backlight substrate away from the display panel for horizontally rotating the backlight substrate.

[0019] A control unit is electrically connected to the sensing unit and the substrate adjusting mechanism, and is configured to control the substrate adjusting mechanism to rotate horizontally based on the position information.

[0020] In some embodiments, the sensing unit comprises:

[0021] A lens is configured to collect image information in front of the display panel.

[0022] A sensor is electrically connected to the lens and the control unit, and is configured to identify a target person from the image information and determine a direction vector of the target person in the image information.

[0023] In some embodiments, the substrate adjusting mechanism comprises:

[0024] A driving mechanism is electrically connected to the control unit, and the control unit is configured to control the driving mechanism to move based on the direction vector.

[0025] A movable support is connected between the backlight substrate and the driving mechanism, and the driving mechanism is configured to drive the movable support to move after being activated, and the movable support is configured to drive the backlight substrate to rotate horizontally after being moved.

[0026] In some embodiments, the substrate adjusting mechanism is configured to rotate horizontally by an angle of no more than 10°.

[0027] The LED display device provided by the present application has the following advantages:

[0028] The LED light source is provided with a first lens layer, and the first lens layer is provided with an optical Fresnel structure. The first surface and the second surface of the optical Fresnel structure have a collimating effect, which can make the divergent light rays in the light beam emitted by the light-emitting chip tend to be parallel, that is, reduce the proportion of intersecting light rays in the light beam. When the light beam irradiates the surface of the display panel, the subtle height difference on the surface of the display panel can be better reflected, and more corresponding shadows can be formed, so that the texture of the picture on the display panel is stronger, and the picture quality is improved. When the person and the display panel are relatively displaced, the person's eyes can observe more details of the picture because the picture texture is stronger, and the picture seen is clearer, thereby achieving the effect of reducing visual dynamic blur.

[0029] Through cooperation of the first lens layer and the second lens layer, the light beams emitted by the light-emitting chip can pass through twice collimation and once diffusion, so that the light rays in the light beams finally irradiated on the display panel tend to be more parallel and have a larger light-emitting angle, improving picture quality while reducing cost, saving cost, and reducing the risk of visual dynamic blur when a user observes the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0031] Figure 1 The structural schematic diagram of the LED display device for reducing visual dynamic blur provided by the embodiments of the present application is shown in the figure.

[0032] Figure 2 The structural schematic diagram of the LED display device for reducing visual dynamic blur provided by the embodiments of the present application is shown in the figure. Figure 1 The enlarged view of the A area in the figure.

[0033] In the figure, various reference signs are as follows:

[0034] 1, display panel;

[0035] 2, backlight substrate;

[0036] 3, light-emitting chip;

[0037] 4, light conversion layer; 41, green light conversion layer; 42, red light conversion layer;

[0038] 5, diffusion layer; 51, scattering layer; 52, reflecting layer;

[0039] 6, first lens layer; 61, first surface; 62, second surface;

[0040] 7, second lens layer; 71, third surface; 72, fourth surface. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] It should be noted that when a component is referred to as being "fixed" or "set" on another component, it can be directly or indirectly on the other component. When a component is referred to as being "connected" to another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or position shown in the drawings based on the orientation or position shown in the drawings, and are only for the convenience of description, and cannot be understood as a limitation on the technical solutions. The terms "first", "second" are only for the convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0043] The LED display device for reducing visual dynamic blur according to the embodiments of the present application is described below in conjunction with the drawings.

[0044] Please refer to Figure 1 , Figure 1 The structural schematic diagram of the LED display device for reducing visual dynamic blur according to the present application is shown, which comprises a display panel 1, a backlight substrate 2, and a plurality of LED light sources arranged in an array on the backlight substrate 2. The backlight substrate 2 is arranged on the rear end surface of the display panel 1. The LED light sources are used for illuminating each area on the back of the display panel 1. The LED light sources comprise a light emitting chip 3, a light conversion layer 4, a diffusion layer 5, and a first lens layer 6.

[0045] Specifically, the light emitting chip 3 is coupled on the backlight substrate 2, and the light emitting chip 3 is located on the side of the backlight substrate 2 facing the display panel 1. The light conversion layer 4 is arranged on the light emitting chip 3 and covers the light emitting front surface of the light emitting chip 3. The light conversion layer 4 is used for converting and mixing the light emitted by the light emitting chip 3 to emit white light. The diffusion layer 5 is arranged on the light conversion layer 4 and is used for expanding the light-emitting angle of the white light.

[0046] The first lens layer 6 is connected to the backlight substrate 2 and covers the diffusion layer 5. The first lens layer 6 has a plurality of concentrically arranged optical Fresnel structures on the exit surface. Each optical Fresnel structure has a first surface 61 facing the center and a second surface 62 facing away from the center. The first surface 61 is configured to be parallel to the refracted light on the incident surface of the Fresnel lens, and the second surface 62 is configured to be a hemispherical profile.

[0047] It can be understood that the visual dynamic blur mainly manifests in the inability to accurately see the picture on the display panel 1. If the picture quality of the picture on the display panel 1 is improved, the visual dynamic blur can be reduced.

[0048] It should be noted that the conventional LED light source usually has a hemispherical lens layer at the outermost layer to expand the light emitting angle, but most of the light rays in the light beam refracted by the hemispherical lens layer intersect, that is, most of the light rays in the light beam irradiated on the display panel 1 are intersecting light rays, and when the light beam is irradiated on the display panel 1, the intersecting light rays weaken the texture effect of the surface of the display panel 1. In other words, when the intersecting light rays irradiate the texture of the surface of the display panel 1, they cannot show the subtle height difference, which weakens the corresponding shadow, reduces the texture of the picture on the display panel 1, and thus reduces the picture quality, and people are more likely to have visual dynamic blur when observing the display panel 1.

[0049] In the embodiments of the present application, referring to Figure 1 , the LED light source is provided with a first lens layer 6, and the first lens layer 6 is provided with an optical Fresnel structure, and the first surface 61 and the second surface 62 of the optical Fresnel structure have a collimating effect, which can make the divergent light rays in the light beam emitted by the light emitting chip 3 tend to be parallel, that is, reduce the proportion of intersecting light rays in the light beam. Since the light beam generated by the light emitting chip 3 tends to be parallel after passing through the first lens layer 6, when the light beam irradiates the surface of the display panel 1, it can better reflect the subtle height difference of the surface of the display panel 1, and more form corresponding shadows, thereby making the picture on the display panel 1 have stronger texture, improving the picture quality. When the person and the display panel 1 have relative displacement, since the picture has stronger texture, the person's eyes can observe more details of the picture, and the picture seen will be clearer, thereby achieving the effect of reducing visual dynamic blur.

[0050] Continuing to refer to Figure 1 , the first lens layer 6 is provided as a plane mirror, which makes the distance between the first lens layer 6 and the light emitting chip 3 smaller, that is, the thickness of the formed LED light source is smaller, and the corresponding display device is thinner, which greatly improves the aesthetics of the display device.

[0051] At the same time, in addition to the collimating effect of the first lens layer 6, by providing a diffusion layer 5 on the light conversion layer 4, the light emitting angle of the light beam can be expanded, replacing the function of the hemispherical lens layer in the conventional technology, thereby expanding the size of the light spot formed by the LED light source on the display panel 1, improving the picture quality on the display panel 1, and also reducing the number of LED light sources arranged, achieving the effect of reducing cost and increasing efficiency.

[0052] Further, referring to Figure 1 , the diffusion layer 5 is also provided as a plane layer, which reduces the thickness of the LED light source.

[0053] In some embodiments, referring to Figure 1 and Figure 2The LED light source also includes a second lens layer 7, which is connected to the first lens layer 6 and covers the exit surface of the first lens layer 6. The exit surface of the second lens layer 7 has a plurality of concentrically arranged optical Fresnel structures. Each optical Fresnel structure has a third surface 71 facing the center and a fourth surface 72 facing away from the center. The third surface 71 is configured to be parallel to the light refracted on the incident surface of the Fresnel lens, and the fourth surface 72 is configured as a concave arc surface.

[0054] After passing through the first lens layer 6, the light beam enters the second lens layer 7. Since the first lens layer 6 has already collimated the light beam once, the light rays in the beam incident on the second lens layer 7 are already nearly parallel. After the light beam enters the second lens layer 7, the third surface 71 of the second lens layer 7 can collimate the light beam again, while the fourth surface 72 of the second lens layer 7 can diffuse the parallel light rays, making the diffusion angle of the parallel light rays in the beam larger. In other words, the light beam can obtain a larger exit angle after passing through the second lens layer 7, and the light rays in the beam are more nearly parallel.

[0055] With the cooperation of the first lens layer 6 and the second lens layer 7, the light beam emitted by the light-emitting chip 3 can be collimated twice and diffused once, so that the light in the light beam that finally shines on the display panel 1 is more parallel and has a larger light emission angle. This improves the picture quality while reducing costs and increasing efficiency. It also reduces the risk of visual motion blur when users observe the display panel 1.

[0056] Further, see Figure 2 The first lens layer 6 and the second lens layer 7 are both planar structures, so the spacing between each layer can be set to be very small.

[0057] Specifically, there is a first gap between the first lens layer 6 and the diffusion layer 5, and a second gap between the second lens layer 7 and the first lens layer 6, wherein the sum of the first gap and the second gap is not greater than 5 mm.

[0058] For example, the first pitch can be set to 2mm and the second pitch can be set to 2mm. In this way, the total pitch on the LED light source is only 4mm, which is much smaller than the 6-7mm gap of traditional LED light sources. This allows the LED light source to be made very thin, and the display device can also be made thinner and more aesthetically pleasing.

[0059] Of course, the first pitch can also be set to 1mm and the second pitch can be set to 1mm, which can make the LED light source thinner and the display device lighter and more beautiful.

[0060] In some implementations, to make the LED light source smaller and thinner, the light-emitting chip 3 is a mini LED, that is, a micro light-emitting diode.

[0061] Meanwhile, the light-emitting chip 3 is configured such that the cross-section of the beam it generates is circular, so that the beam can better match the optical Fresnel structure on the first lens layer 6 and the second lens layer 7, improve the collimation effect, and increase the proportion of parallel light in the emitted beam.

[0062] In some embodiments, the light-emitting chip 3 is a blue light chip, and the light conversion layer 4 includes a green light conversion layer 41 and a red light conversion layer 42, which are sequentially disposed on the light-emitting chip 3 and cover the light-emitting front side of the light-emitting chip 3.

[0063] In this configuration, the green light conversion layer 41 faces the front of the light-emitting chip 3, and the red light conversion layer 42 covers the green light conversion layer 41, with the green light conversion layer 41 positioned between the light-emitting chip 3 and the red light conversion layer 42. Alternatively, the positions of the red light conversion layer 42 and the green light conversion layer 41 can be reversed, with the red light conversion layer 42 facing the front of the light-emitting chip 3, and the green light conversion layer 41 covering the red light conversion layer 42, with the red light conversion layer 42 positioned between the light-emitting chip 3 and the green light conversion layer 41.

[0064] For example, when the green light conversion layer 41 is located between the light-emitting chip 3 and the red light conversion layer 42, after the blue light chip emits blue light, the blue light is excited to emit green light when it passes through the green light conversion layer 41, and then excited to emit red light when it passes through the red light conversion layer 42, and then mixed to form white light.

[0065] In some embodiments, red phosphor is disposed in the red light conversion layer 42 and green phosphor is disposed in the green light conversion layer 41. The red phosphor and green phosphor include, but are not limited to, fluoride phosphors, such as KSF phosphor and KGF phosphor.

[0066] Furthermore, the diffusion layer 5 includes a scattering layer 51 and a reflective layer 52. The scattering layer 51 is connected to the light-emitting surface of the light conversion layer 4, and the reflective layer 52 is connected to the light-emitting surface of the scattering layer 51. Both the scattering layer 51 and the reflective layer 52 are provided with diffusion particles, and the proportion of diffusion powder in the reflective layer 52 is greater than the proportion of diffusion particles in the scattering layer 51.

[0067] The scattering layer 51 is a silicone layer with diffuser powder inside, and the scattering layer 51 covers the light conversion layer 4. After entering the scattering layer 51, the light undergoes path conversion through the diffuser particles, so that more light is emitted from the side of the light-emitting chip 3, thereby increasing the light emission angle of the light-emitting chip 3.

[0068] The reflective layer 52 is a transparent silicone layer with diffuser particles inside, and the reflective layer 52 covers the scattering layer 51.

[0069] The diffuser particles are mainly used to scatter light. When the concentration of diffuser particles is high, they can also reflect light. This is the working principle of the scattering layer 51 and the reflective layer 52. After the reflective layer 52 is set, some of the light entering the reflective layer 52 will return to the scattering layer 51, and this part of the light will be scattered again and emitted more from the side of the packaged chip, thereby further increasing the light emission angle of the light-emitting chip 3.

[0070] By setting the scattering layer 51 and the reflective layer 52, the light emission angle of the light-emitting chip 3 is improved. Based on this, the light area formed by the light beam after passing through the first lens layer 6 and the second lens layer 7 will also be larger, thus improving the light emission quality of the LED backlight.

[0071] In some embodiments, the diffusion particles include any one or a combination of silica solid particles, titanium dioxide solid particles, or other similar particles.

[0072] Furthermore, in addition to enhancing the texture of the image on the display panel 1, visual motion blur can be reduced by adjusting the angle between the backlight substrate 2 and the subject. Understandably, the closer the backlight substrate 2 is to the viewer's eyes, the clearer the image will appear, thus reducing visual motion blur.

[0073] Therefore, in some embodiments, the LED display device for reducing visual motion blur further includes a sensing unit, a substrate adjustment mechanism, and a control unit. The sensing unit is connected to the front surface of the display panel 1 and is used to detect the position information of the target person. The substrate adjustment mechanism is connected to the side of the backlight substrate 2 facing away from the display panel 1 and is used to horizontally rotate the backlight substrate 2. The control unit is electrically connected to the sensing unit and the substrate adjustment mechanism. The control unit is used to control the activation of the substrate adjustment mechanism based on the position information. After activation, the substrate adjustment mechanism rotates horizontally so that the center of the backlight substrate 2 faces the target person.

[0074] In this embodiment, the target person moves from a position directly facing the display panel 1 to the side of the display panel 1. When the target person is directly in front of the display panel 1, the backlight substrate 2 is in its initial position, the sensing unit detects that the target person is located at the center of the backlight substrate 2, and the control unit does not control the substrate adjustment mechanism to start. After the target person begins to move, the target person will be located to the side of the backlight substrate 2. At this time, the sensing unit detects the change in the target person's position and its current position, the control unit controls the substrate adjustment mechanism to start, and adjusts the rotation direction of the backlight substrate 2 according to the target person's current position so that the center of the backlight substrate 2 faces the target person.

[0075] Understandably, when the backlight substrate 2 is facing the target person, the LED light source on the backlight substrate 2 will also be facing the target person. The light intensity is greatest directly in front of the LED light source, which allows the human eye to receive more light and thus see the image on the display panel 1 more clearly, thereby reducing visual motion blur.

[0076] In some implementations, the sensing unit includes a lens and a sensor. The lens is used to collect image information directly in front of the display panel 1. The sensor is electrically connected to the lens and the control unit, and is used to identify a target person from the image information and determine the direction vector of the target person in the image information.

[0077] During use, the sensor collects data and pre-stores facial data or a model of the target person's body shape. The sensor's horizontal center point is preset as a fixed origin, with a horizontal margin reserved for image stabilization. When the tracked target moves beyond this margin within the lens's field of view, the sensor compares the collected data with the pre-stored data to determine the target person's horizontal movement direction vector corresponding to the fixed origin, generating a direction vector signal. The sensor transmits this direction vector signal to the control unit, which then activates the baseboard adjustment mechanism, causing the backlight baseboard 2 to rotate a certain angle in the horizontal plane, aligning it towards the target person.

[0078] The sensor contains a processor, which executes the control method described in the above embodiments during operation. The sensor includes a dot matrix area sensor.

[0079] In some embodiments, the substrate adjustment structure includes a drive mechanism and a movable support. The drive mechanism is electrically connected to a control unit, which controls the drive mechanism to start according to a direction vector. The movable support is connected between the backlight substrate 2 and the drive mechanism. After the drive mechanism is started, it drives the movable support to move, and the movable support drives the backlight substrate 2 to rotate horizontally.

[0080] In some embodiments, the drive mechanism includes a servo motor, the movable support includes a gimbal capable of horizontal rotation, the servo motor has a rotation shaft connected to one end of the gimbal, and the other end of the gimbal is connected to the center of the side of the backlight substrate 2 away from the display panel 1.

[0081] In some embodiments, the rotation angle of the substrate adjustment mechanism during horizontal rotation is no greater than 10°.

[0082] Understandably, there is a certain gap between the display panel 1 and the backlight substrate 2, but the gap cannot be too large, otherwise it will affect the brightness of the light area on the display panel 1 and the display device will appear bulky. The backlight substrate 2 needs to rotate within this gap. Therefore, the substrate adjustment mechanism rotates within a certain range, which can reduce visual motion blur and make the display device thinner and lighter.

[0083] In some embodiments, the rotation angle of the substrate adjustment mechanism during horizontal rotation includes any one of 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10° or any value between two adjacent angles.

[0084] Meanwhile, since the first lens layer 6 and the second lens layer 7 are both planar structures, the thickness of the LED light source is very small, which indirectly increases the gap between the display panel 1 and the backlight substrate 2, providing greater room for rotation of the backlight substrate 2. With the same thickness of the display device, the backlight substrate 2 can rotate at a larger angle, and the backlight substrate 2 can face the target person more accurately, thus reducing the effect of visual motion blur.

[0085] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An LED display device for reducing visual motion blur, characterized in that, The display panel includes a backlight substrate and multiple LED light sources arrayed on the backlight substrate. The backlight substrate is disposed on the rear end face of the display panel, and the LED light sources include: A light-emitting chip is coupled to the backlight substrate; A light conversion layer is disposed on the light-emitting chip and covers the light-emitting front side of the light-emitting chip. The light conversion layer is used to convert and mix the light emitted by the light-emitting chip to emit white light. A diffusion layer, disposed on the light conversion layer, is used to expand the emission angle of the white light; A first lens layer is connected to the backlight substrate and covers the diffusion layer. The exit surface of the first lens layer has a plurality of concentrically arranged optical Fresnel structures. Each optical Fresnel structure has a first surface facing the center and a second surface facing away from the center. The first surface is configured to be parallel to the light refracted on the incident surface of the Fresnel lens, and the second surface is configured to have a hemispherical profile.

2. The LED display device for reducing visual motion blur according to claim 1, characterized in that, The LED light source further includes a second lens layer connected to the first lens layer and covering the exit surface of the first lens layer. The exit surface of the second lens layer has a plurality of concentrically arranged optical Fresnel structures. Each optical Fresnel structure has a third surface facing the center and a fourth surface facing away from the center. The third surface is configured to be parallel to the light refracted on the incident surface of the Fresnel lens, and the fourth surface is configured as a concave arc surface.

3. The LED display device for reducing visual motion blur according to claim 2, characterized in that, The first lens layer and the diffusion layer have a first spacing, and the second lens layer and the first lens layer have a second spacing, the sum of the first spacing and the second spacing being no greater than 5 mm.

4. The LED display device for reducing visual motion blur according to claim 2, characterized in that, The light-emitting chip is a mini LED, and the light-emitting chip is configured such that the cross-section of the light beam it produces is circular.

5. The LED display device for reducing visual motion blur according to claim 2, characterized in that, The light-emitting chip is a blue light chip, and the light conversion layer includes a green light conversion layer and a red light conversion layer. The green light conversion layer and the red light conversion layer are sequentially disposed on the light-emitting chip and cover the light-emitting front side of the light-emitting chip.

6. The LED display device for reducing visual motion blur according to claim 2, characterized in that, The diffusion layer includes a scattering layer and a reflective layer. The scattering layer is connected to the light-emitting surface of the light conversion layer, and the reflective layer is connected to the light-emitting surface of the scattering layer. Both the scattering layer and the reflective layer contain diffusion particles, and the proportion of diffusion powder in the reflective layer is greater than the proportion of diffusion particles in the scattering layer.

7. The LED display device for reducing visual motion blur according to claim 2, characterized in that, Also includes: A sensing unit, connected to the front surface of the display panel, is used to detect the position information of the target person; A substrate adjustment mechanism is connected to the side of the backlight substrate facing away from the display panel and is used to rotate the backlight substrate horizontally. A control unit is electrically connected to the sensing unit and the substrate adjustment mechanism. The control unit is used to control the activation of the substrate adjustment mechanism according to the position information. After activation, the substrate adjustment mechanism rotates horizontally so that the center of the backlight substrate faces the target person.

8. The LED display device for reducing visual motion blur according to claim 7, characterized in that, The sensing unit includes: A lens is used to collect image information directly in front of the display panel; A sensor, electrically connected to the lens and the control unit, is used to identify a target person from the image information and determine the direction vector of the target person in the image information.

9. The LED display device for reducing visual motion blur according to claim 8, characterized in that, The substrate adjustment mechanism includes: A drive mechanism is electrically connected to the control unit, which is used to control the drive mechanism to start according to the direction vector; A movable bracket is connected between the backlight substrate and the driving mechanism. After the driving mechanism is activated, it drives the movable bracket to move, and after the movable bracket moves, it drives the backlight substrate to rotate horizontally.

10. The LED display device for reducing visual motion blur according to claim 9, characterized in that, The rotation angle of the substrate adjustment mechanism during horizontal rotation is no greater than 10°.

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