Light panel and display device

Abstract

This invention proposes a light panel and a display device. The light panel includes a substrate and multiple light-emitting units. Multiple light slots are arranged in an array on the substrate. Each light-emitting unit is vertically and flexibly disposed within one of the light slots, with its light-emitting surface facing the opening of the slot. This technical solution enables the display device to switch between wide and narrow viewing angles at any angle.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a lamp panel and a display device. Background Technology

[0002] Currently, with the continuous advancement of display technology, the viewing angle of display devices has been significantly expanded. While enjoying the visual experience brought by a wide viewing angle, people also want to effectively protect trade secrets and personal privacy to avoid business losses or embarrassment caused by the leakage of screen information. Therefore, in addition to the need for a wide viewing angle, many situations also require display devices to have the function of switching between wide and narrow viewing angles. Among related technologies, Mini LED (Mini Light Emitting Diode) liquid crystal display devices use two privacy films with different light-receiving directions combined with a dimming structure, but this only allows the display device to switch between wide and narrow viewing angles in one direction, while the other direction remains a narrow viewing angle. Summary of the Invention

[0003] The main objective of this invention is to provide a light panel and a display device that enable the display device to switch between wide and narrow viewing angles at any angle.

[0004] To achieve the above objectives, the present invention provides a light panel comprising:

[0005] A substrate having an array of lamp slots formed thereon; and

[0006] Multiple light-emitting units are provided, each of which is vertically and vertically disposed in a lamp slot, with the light-emitting surface of the light-emitting unit facing the opening of the lamp slot.

[0007] In one embodiment of this application, the lamp panel further includes a plurality of lifting structures, each of the lifting structures being disposed in one of the lamp slots and being connected in a transmission manner to the light-emitting unit in the lamp slots to drive the light-emitting unit to rise and fall.

[0008] In one embodiment of this application, at least two conductive electrodes are sequentially arranged on the sidewall of the lamp slot along the depth direction of the lamp slot, and the light-emitting chip can be electrically connected to any of the conductive electrodes.

[0009] In one embodiment of this application, the driving structure further includes a rotating structure, which is drivenly connected to the lifting structure and to the light-emitting unit, and can drive the light-emitting unit to rotate along the plane where the light-emitting unit is located, so that the light-emitting unit is connected to or disconnected from the conductive electrode.

[0010] In one embodiment of this application, the circumferential edge of the light-emitting unit is defined to have a first position and a second position spaced apart, and the distance between the first position and the center of the rotation axis of the light-emitting unit is greater than the distance between the second position and the center of the rotation axis of the light-emitting unit;

[0011] The first position is provided with a conductive structure. When the first position faces the conductive electrode, the conductive structure is electrically connected to the conductive electrode. When the second position faces the conductive electrode, the light-emitting unit is spaced apart from the conductive electrode.

[0012] In one embodiment of this application, the light panel further includes a plurality of distance sensors, and at least one distance sensor is provided on the bottom wall of each light slot for detecting the depth of the light-emitting unit in the light slot.

[0013] In one embodiment of this application, each of the lamp slots is provided with at least two of the distance measuring sensors, and two of the distance measuring sensors are arranged at intervals along the rotation direction of the light-emitting unit, and at least one of the distance measuring sensors is located within the orthographic projection range of the light-emitting unit on the bottom wall of the lamp slot;

[0014] And / or, with the distance between the edge of the light-emitting unit and the center of the rotation axis as the rotation radius, at least one of the ranging sensors is located within the orthographic projection range of the rotation area formed by the shortest rotation radius of the light-emitting unit on the bottom wall of the lamp slot.

[0015] In one embodiment of this application, the lamp panel further includes multiple support plates, each of which is disposed in a lamp groove and is connected to a lifting structure in the lamp groove for transmission, and supports the light-emitting unit.

[0016] In one embodiment of this application, the lamp board further includes a plurality of driving chips, each of the driving chips being disposed in one of the lamp slots and electrically connected to the substrate and the lifting structure in the lamp slot.

[0017] In one embodiment of this application, a clearance groove is provided on the bottom wall of the lamp slot, and the driving chip is disposed in the clearance groove.

[0018] This application also proposes a display device comprising a light panel as described in any of the preceding claims.

[0019] The technical solution of this invention, in the lamp panel serving as the backlight of a display device, allows the light-emitting unit to be vertically and flexibly disposed in the lamp groove of the substrate. Since some light emitted by the light-emitting unit is blocked by the groove wall, and the angle of the emitted light varies depending on the depth of the light-emitting unit within the lamp groove, the deeper the light-emitting unit is located, the smaller the angle of the light emitted through the lamp groove opening; conversely, the closer the light-emitting unit is to the lamp groove opening, the larger the angle of the light emitted through the lamp groove opening. That is, when it is necessary to switch the display device to a wide viewing angle, the light-emitting unit is lifted upwards, increasing the light emission angle of the unit and thus increasing... The display device's viewing angle allows for switching from narrow to wide. When a narrow viewing angle is needed, the light-emitting unit is lowered, reducing its emission angle and thus decreasing the viewing angle. This allows for switching from wide to narrow viewing angles. Furthermore, during the raising and lowering of the light-emitting unit within the lamp trough, the light emitted by the unit in all circumferential directions is affected and blocked by the lamp trough walls. Therefore, the display device can switch between wide and narrow viewing angles at any angle, and this switching is achieved simply by raising and lowering the light-emitting unit, making operation simple. Additionally, the light-emitting unit can be raised and lowered to any depth within the lamp trough to adjust the viewing angle of the display device, making the viewing angle adjustment more flexible. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is an exploded view of an embodiment of the display device of the present invention;

[0022] Figure 2 This is a top view of an embodiment of the lamp panel of the present invention;

[0023] Figure 3 This is a structural diagram of a single light-emitting unit in the lamp panel of the present invention in the state of being non-conductive within the lamp slot;

[0024] Figure 4 This is a structural diagram of a single light-emitting unit in the lamp panel of the present invention in the lowest position of the lamp slot, in the conductive state.

[0025] Figure 5 This is a structural diagram of a single light-emitting unit in the lamp panel of the present invention, in the conductive state at the middle position in the lamp slot;

[0026] Figure 6This is a structural diagram of a single light-emitting unit in the lamp panel of the present invention, in the highest position of the lamp slot, in the conductive state.

[0027] Explanation of icon numbers:

[0028] label name label name 100 Display device 13 Lifting structure 10 Light panel 14 Rotating structure 11 substrate 15 Distance sensor 111 Light trough 16 pallet 112 clearance slot 17 driver chip 113 conductive electrodes 20 Display screen 12 Light-emitting unit 30 Optical films 121 conductive structure 40 shell

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0034] This invention proposes a lamp panel 10.

[0035] Combined with reference Figures 1 to 6In some embodiments of this application, the light panel 10 includes:

[0036] Substrate 11, wherein a plurality of lamp slots 111 are arranged in an array on substrate 11; and

[0037] Multiple light-emitting units 12 are provided, each of which is vertically and vertically disposed in a lamp slot 111, with the light-emitting surface of the light-emitting unit 12 facing the opening of the lamp slot 111.

[0038] The lamp panel 10 proposed in this application is used as a backlight in a display device 100, such as a direct-lit LCD (Liquid Crystal Display) or Mini LED (Mini Light Emitting Diode) liquid crystal display device, or it can be used directly as a display of the display device 100. The emission angle of each light-emitting unit 12 in the lamp panel 10 determines the viewing angle of the display device 100. Understandably, the user cannot observe the luminous state of the light-emitting unit 12 outside its light emission angle. In this embodiment, the lamp board 10 includes a substrate 11 and a plurality of light-emitting units 12 disposed on the substrate 11. The light-emitting units 12 can be light-emitting chips or lamp beads, which are not limited here. The substrate 11 can be a circuit board, and a plurality of lamp slots 111 are formed on the substrate 11. The lamp slots 111 are arranged in an array on the surface of the substrate 11, and the plurality of light-emitting units 12 are disposed in each lamp slot 111. The depth of the lamp slot 111 is greater than the thickness of the light-emitting unit 12, so that each light-emitting unit 12 can rise and fall in the lamp slot 111 in which it is located, and the light-emitting surface of each light-emitting unit 12 is not higher than the opening of the lamp slot 111. The light-emitting unit 12 is a point light source. When the light-emitting unit 12 emits light, the light diffuses out in all directions around the light-emitting unit 12. When the light-emitting surface of the light-emitting unit 12 is lower than the opening of the lamp slot 111, part of the light emitted by the light-emitting unit 12 will be blocked by the wall of the lamp slot 111, and only part of the light will be emitted from the opening of the lamp slot 111. It is understandable that the maximum angle of light emitted from the light-emitting unit 12 from the lamp groove 111 is the angle of the line connecting the light-emitting surface of the light-emitting unit 12 and the edge of the lamp groove 111. Thus, when the light-emitting unit 12 moves up and down in the lamp groove 111, the light blocked by the lamp groove 111 wall varies depending on the depth of the light-emitting unit 12, and the angle of light emitted from the lamp groove 111 also varies. The deeper the light-emitting unit 12 is, the more light is blocked, and the less light can be emitted from the lamp groove 111. At this time, the divergence angle of the light emitted from the lamp groove 111 by the light-emitting unit 12 is also smaller, resulting in a smaller viewing angle of the display device 100. When the light-emitting unit 12 is close to the lamp groove 111, the angle between the line connecting the light-emitting unit 12 and the edge of the lamp groove 111 and the depth direction of the lamp groove 111 is larger, and the light emitted from the lamp groove 111 by the light-emitting unit 12 has a larger divergence angle, resulting in a larger viewing angle of the display device 100.

[0039] The lifting of the light-emitting unit 12 is generally driven by the lifting structure 13. The lifting structure 13 can be a combination of a lifting motor or other driving components and transmission structures.

[0040] Therefore, it is understandable that in the technical solution of this application, in the lamp panel 10 serving as the backlight of the display device 100, the light-emitting unit 12 is movably disposed in the lamp groove 111 of the substrate 11. Since some light emitted by the light-emitting unit 12 is blocked by the groove wall of the lamp groove 111, and the angle of the emitted light varies depending on the depth of the light-emitting unit 12 within the lamp groove 111, the deeper the light-emitting unit 12 is, the smaller the angle of the light emitted through the opening of the lamp groove 111; conversely, the closer the light-emitting unit 12 is to the opening of the lamp groove 111, the larger the angle of the light emitted through the opening of the lamp groove 111. That is, when it is necessary to switch the display device 100 to a wide viewing angle, the light-emitting unit 12 is lifted upwards, allowing the light-emitting unit 12 to emit light more light. The increased light angle widens the viewing angle of the display device 100, enabling a change from narrow to wide viewing angle. When a narrow viewing angle is needed, the light-emitting unit 12 is lowered, reducing its light-emitting angle and thus decreasing the viewing angle of the display device 100. This allows for a change from wide to narrow viewing angle. Furthermore, during the raising and lowering of the light-emitting unit 12 within the lamp slot 111, the light emitted by the light-emitting unit 12 at all circumferential angles is affected and blocked by the wall of the lamp slot 111. Therefore, the display device 100 can switch between wide and narrow viewing angles at any angle, and this switching can be achieved simply by raising and lowering the light-emitting unit 12, making the operation simple. Additionally, the light-emitting unit 12 can be raised and lowered to any depth within the lamp slot 111 to adjust the viewing angle of the display device 100, making the viewing angle adjustment of the display device 100 more flexible.

[0041] Please refer to Figures 3 to 6 In some embodiments of this application, the lamp panel 10 further includes a plurality of lifting structures 13, each of the lifting structures 13 being disposed in a lamp groove 111 and being connected in a transmission manner to the light-emitting unit 12 in the lamp groove 111 to drive the light-emitting unit 12 to rise and fall.

[0042] In this embodiment, the lamp panel 10 includes multiple lifting structures 13, such that each lifting structure 13 is respectively configured to correspond to a light-emitting unit 12. The lifting structure 13 is disposed in the lamp slot 111 and is connected to the light-emitting unit 12 in the lamp slot 111 to drive the light-emitting unit 12 to rise and fall. The lifting structure 13 typically uses a motor as the driving component. The motor can be a linear motor, with the moving part of the linear motor directly connected to the light-emitting unit 12 to drive the light-emitting unit 12 to rise and fall. Of course, the motor can also be a rotary motor, using a small lead screw or other structural combination to form the lifting structure 13 for transmission control; no limitation is made here. By allowing each lifting structure 13 to drive one light-emitting unit 12 to rise and fall independently, the flexibility of independent adjustment of each light-emitting unit 12 can be improved to meet the wide and narrow viewing angle adjustment requirements in different directions and angles.

[0043] Please refer to Figures 3 to 6 In some embodiments of this application, the lifting structure 13 is a linear motor, which is located on the side of the light-emitting unit 12 facing the bottom wall of the lamp slot 111, and the moving part of the linear motor is connected to the light-emitting unit 12.

[0044] In this embodiment, a linear motor is used as the lifting structure 13, which is set on the bottom wall of the lamp slot 111. The mover of the linear motor extends towards the light-emitting unit 12 and connects to the light-emitting unit 12. This arrangement can prevent the lifting structure 13 from being higher than the light-emitting surface of the light-emitting unit 12, thus avoiding the lifting structure 13 from blocking the light emitted by the light-emitting unit 12. In addition, the use of a linear motor eliminates the need for other transmission structures, which can reduce the number of parts in the lamp panel 10. This reduces the assembly difficulty and the volume of the lifting structure 13, preventing the lifting structure 13 from occupying a large space, thereby reducing the volume of the lamp panel 10.

[0045] Please refer to Figures 3 to 6 In some embodiments of this application, at least two conductive electrodes 113 are sequentially arranged on the sidewall of the lamp groove 111 along the depth direction of the lamp groove 111, and the light-emitting chip can be electrically connected to any of the conductive electrodes 113.

[0046] Understandably, the technical solution of this application adjusts the angle of light emitted from the light-emitting unit 12 from the opening of the light slot 111 by adjusting the depth of the light-emitting unit 12 in the light slot 111, thereby adjusting the viewing angle of the display device 100. In this way, the light-emitting unit 12 is electrically connected to the substrate 11 so that the light-emitting unit 12 can receive power and display signals through the substrate 11 to emit light. The light-emitting unit 12 can be electrically connected to the substrate 11 through a bonding wire. However, there is a risk of the bonding wire breaking during the lifting and lowering of the light-emitting unit 12, resulting in low performance stability.

[0047] In this embodiment, at least two conductive electrodes 113 are sequentially arranged on the side wall of the lamp groove 111 along the depth direction of the lamp groove 111. When the light-emitting unit 12 moves to different depths, the light-emitting unit 12 can be electrically connected to the conductive electrode 113 at the same depth position or the nearest one, thereby electrically connecting the light-emitting unit 12 to the substrate 11 so as to receive power and display signals through the substrate 11 to emit light. Alternatively, only two conductive electrodes 113 can be arranged along the depth direction of the lamp groove 111 to correspond to the switching of two fixed viewing angle states, namely wide and narrow viewing angles. Or, three or more conductive electrodes 113 can be arranged so that the light-emitting unit 12 can have more depth position switching options, thereby enabling the display device 100 to have more viewing angle switching states. It should also be noted that, typically, at least a positive electrode and a negative electrode need to be provided at the same depth position to form a conductive electrode 113, so that both the positive electrode and the negative electrode are electrically connected to the light-emitting chip, thereby forming a complete circuit between the substrate 11 and the light-emitting unit 12. The positive electrode and the negative electrode can be located on the same trench sidewall, or on adjacent or opposite trench sidewalls, which is not limited here.

[0048] Please refer to Figures 3 to 6 In some embodiments of this application, the driving structure further includes a rotating structure 14, which is connected to the lifting structure 13 and to the light-emitting unit 12, and can drive the light-emitting unit 12 to rotate along the plane where the light-emitting unit 12 is located, so that the light-emitting unit 12 is connected to or disconnected from the conductive electrode 113.

[0049] In the aforementioned embodiments, the light-emitting unit 12 is electrically connected to the conductive electrode 113 at the corresponding depth when it is at different depths, so that the light-emitting unit 12 can receive power and display signals through the substrate 11 to emit light. However, when the light-emitting unit 12 is in a conductive state with the conductive electrode 113 and the light-emitting unit 12 is moved, electrical safety issues may arise, leading to damage to the light-emitting unit 12 and the substrate 11. Furthermore, when the light-emitting unit 12 needs to cross other conductive electrodes 113 during the process of changing its depth, it may become conductive with other conductive electrodes 113, causing the light-emitting unit 12 to emit light, which may lead to the problem of screen information leakage.

[0050] In this embodiment, the light-emitting unit 12 is made to rotate along its plane, and the rotation structure 14 is used to drive the light-emitting unit 12 to rotate. With this configuration, when the display device 100 needs to switch states, the rotation structure 14 is used to drive the light-emitting unit 12 to rotate, so that the conductive end of the light-emitting unit 12 is misaligned and disconnected from the conductive electrode 113. Then the light-emitting unit 12 is moved, which avoids electrical safety accidents and prevents the conductive electrode 113 at other depth positions from being turned on and causing the light-emitting unit 12 to emit light when the light-emitting unit 12 is not moved into place.

[0051] The rotating structure 14 can be a rotary motor, which is connected to the lifting structure 13 and the light-emitting unit 12. With this configuration, the lifting structure 13 can drive the rotating structure 14 and the light-emitting unit 12 to move up and down simultaneously along the depth direction of the lamp groove 111, and the rotating structure 14 can also drive the light-emitting unit 12 to rotate.

[0052] Please refer to Figures 3 to 6 In some embodiments of this application, the circumferential edge of the light-emitting unit 12 is defined to have a first position and a second position spaced apart, and the distance between the first position and the center of the rotation axis of the light-emitting unit 12 is greater than the distance between the second position and the center of the rotation axis of the light-emitting unit 12.

[0053] The first position is provided with a conductive structure 121. When the first position faces the conductive electrode 113, the conductive structure 121 is electrically connected to the conductive electrode 113. When the second position faces the conductive electrode 113, the light-emitting unit 12 and the conductive electrode 113 are spaced apart.

[0054] Understandably, when the light-emitting unit 12 is connected to the conductive electrode 113, the light-emitting unit 12 and the conductive electrode 113 need to be in contact or connected. In this state, if the light-emitting unit 12 moves up or down along the height direction of the lamp groove 111, it is easy for the light-emitting unit 12 and the conductive electrode 113 to wear or be damaged, affecting the safety of the state switching process.

[0055] In this embodiment, the circumferential edge of the light-emitting unit 12 is defined with a first position and a second position spaced apart. When the light-emitting unit 12 rotates under the drive of the rotating structure 14, the first position and the second position are respectively facing the conductive electrode 113 provided on the side wall of the lamp groove 111. The distance between the first position and the center of the rotation axis of the light-emitting unit 12 is greater than the distance between the second position and the center of the rotation axis of the light-emitting unit 12. A conductive structure 121 is provided at the first position. When the first position faces the conductive electrode 113 provided on the side wall of the lamp groove 111, the conductive structure 121 is used to electrically connect with the conductive electrode 113. At this time, the light-emitting unit 12 can... The light-emitting unit 12 receives power and display signals through the substrate 11 to emit light. When the display device 100 needs to switch states, the rotating structure 14 drives the light-emitting unit 12 to rotate, causing the conductive structure 121 at the first position to separate from the conductive electrode 113, and the second position to face the conductive electrode 113. At this time, the light-emitting unit 12 is spaced apart from the conductive electrode 113 and spaced apart from the sidewall of the lamp groove 111. In this state, when the light-emitting unit 12 moves along the depth direction of the lamp groove 111, it will not rub against the conductive electrode 113 and the sidewall of the lamp groove 111, thus improving the safety of the position switching process of the light-emitting unit 12. In addition, when the positive electrode and negative electrode forming the conductive electrode 113 are located on different sidewalls, two conductive structures 121 can be correspondingly provided on the edge of the light-emitting unit 12. The first position is the state of the light-emitting unit 12 when the conductive structure 121 and the conductive electrode 113 are connected, and the second position is any position where the connection is broken, which also satisfies the above structural settings. The light-emitting unit 12 can be configured as an eccentric cam, a rectangle, or a polygon or ellipse with a long strip structure. The above-mentioned technical effect can be achieved by setting the conductive structure 121 at both ends that are relatively far from the light-emitting unit 12. The specific structure of the light-emitting unit 12 is not limited here.

[0056] Please refer to Figures 3 to 6 In some embodiments of this application, the light panel 10 further includes a plurality of distance sensors 15, and each light groove 111 is provided with at least one distance sensor 15 for detecting the depth of the light-emitting unit 12 in the light groove 111.

[0057] In this embodiment, at least one distance sensor 15 is provided in each lamp slot 111. The distance sensor 15 is used to detect the depth of the light-emitting unit 12 in its respective lamp slot 111 to ensure that the light-emitting unit 12 is raised or lowered to the required position. When the light-emitting unit 12 moves to the required depth position, it is driven to rotate and connect with the conductive electrode 113 at the same height. This ensures that the light-emitting unit 12 can accurately connect with the conductive electrode 113 and receive electrical signals to emit light so that the display device 100 can display the image, thereby improving the adjustment accuracy of the viewing angle of the display device 100 and effectively preventing screen information leakage when switching to a narrow viewing angle. The distance sensor 15 can be ultrasonic ranging, photoelectric ranging, etc., and is not limited here.

[0058] Please refer to Figures 3 to 6 In some embodiments of this application, the ranging sensor 15 is disposed on the bottom wall of the lamp slot 111 and is positioned toward the light-emitting unit 12.

[0059] In this embodiment, the ranging sensor 15 is disposed on the bottom wall of the lamp slot 111 and facing the light-emitting unit 12, so as to avoid the ranging sensor 15 being higher than the light-emitting surface of the light-emitting unit 12, thereby avoiding the lifting structure 13 from blocking the light emitted by the light-emitting unit 12 and affecting the viewing angle adjustment of the display device 100, thereby improving the viewing angle adjustment accuracy of the display device 100.

[0060] Please refer to Figures 3 to 6 In some embodiments of this application, each of the lamp slots 111 is provided with at least two of the distance measuring sensors 15.

[0061] In this embodiment, at least two distance sensors 15 are provided on the bottom wall of the lamp trough 111. Each distance sensor 15 is located at a different position and can be used to detect the distance between different parts of the light-emitting unit 12 and the bottom wall of the trough. With this arrangement, the height of the light-emitting unit 12 can be accurately measured by at least two distance sensors 15, and the tilt state of the light-emitting unit 12 can be determined by the distance detected at different positions, thereby improving the installation accuracy of the light-emitting unit 12.

[0062] In some embodiments of this application, two of the ranging sensors 15 are arranged at intervals along the rotation direction of the light-emitting unit 12, and at least one of the ranging sensors 15 is located within the orthographic projection range of the light-emitting unit 12 on the bottom wall of the lamp slot 111.

[0063] And / or, with the distance between the edge of the light-emitting unit 12 and the center of the rotating shaft as the rotation radius, at least one of the ranging sensors 15 is located within the orthographic projection range of the rotating area formed by the shortest rotation radius of the light-emitting unit 12 on the bottom wall of the lamp slot 111.

[0064] In some embodiments, the light-emitting surface of the light-emitting unit 12 can be configured as an eccentric cam, a rectangle, or a polygonal or elliptical structure with a long strip structure. That is, the distance between different positions of the edge of the light-emitting unit 12 and the center of the rotation axis of the light-emitting unit 12 varies. For example, taking the light-emitting unit 12 as a rectangle, the light-emitting unit 12 has a long side and a short side, and the center of the rotation axis of the light-emitting unit 12 is the center of the light-emitting unit 12. In this case, assuming that when the light-emitting unit 12 rotates, it projects onto the bottom wall of the lamp trough 111 to form a large circle with the long side as its diameter and a small circle with the short side as its diameter, and the ranging sensor 15 is located on the bottom wall of the lamp trough 111 and When the light source is located inside the large circle and outside the small circle, the distance sensor 15 can only detect the distance between the light source unit 12 and the bottom wall of the groove when the long side rotates to above it. Therefore, in this embodiment, two distance sensors 15 are set so that the distance sensors 15 are arranged at intervals along the rotation direction of the light source unit 12. With this setting, even if the long side of the light source unit 12 rotates and shifts, there will always be at least one distance sensor 15 located within the orthographic projection range of the light source unit 12 on the bottom wall of the lamp groove 111. Thus, the depth position of the light source unit 12 can be detected when the light source unit 12 rotates to any position.

[0065] In some embodiments, the ranging sensor 15 can also be set inside the small circle, that is, set within the orthographic projection range of the rotation area formed by the minimum rotation radius of the light-emitting unit 12 on the bottom wall of the lamp slot 111. In this case, no matter where the light-emitting unit 12 rotates, the ranging sensor 15 can detect the depth position of the light-emitting unit 12.

[0066] Please refer to Figures 3 to 6 In some embodiments of this application, the lamp panel 10 further includes a plurality of support plates 16, each of the support plates 16 being disposed in a lamp groove 111 and connected to the lifting structure 13 in the lamp groove 111, and supporting the light-emitting unit 12.

[0067] In this embodiment, the support plate 16 is fixed on the mover of the lifting structure 13 or the rotor of the rotating structure 14 to support the light-emitting unit 12, thereby increasing the connection area between the light-emitting unit 12 and the lifting structure 13 and the rotating structure 14, improving the installation stability and connection strength of the light-emitting unit 12, and preventing the light-emitting unit 12 from being tilted, which would affect the light output effect and the light emission angle.

[0068] In addition, in some embodiments, a distance sensor 15 is provided in the lamp trough 111 to measure the depth of the light-emitting unit 12 in the lamp trough 111. In this case, the depth of the light-emitting unit 12 in the lamp trough 111 can also be reflected by measuring the depth of the tray 16 in the lamp trough 111. That is, the distance sensor 15 is located within the orthographic projection range of the tray 16 on the bottom wall of the lamp trough 111. At this time, the material tray 16 and the light-emitting unit 12 can be rotated to any position and their depth in the lamp trough 111 can be measured.

[0069] Please refer to Figures 4 to 6 In some embodiments of this application, the conductive structure 121 of the light-emitting unit 12 is provided with a snap fastener, and the conductive structure 121 is snapped into the conductive electrode 113 through the snap fastener, so that the light-emitting unit 12 is electrically connected to the conductive electrode 113.

[0070] In this embodiment, a buckle is provided on the conductive structure 121 of the light-emitting unit 12. When the conductive structure 121 is electrically connected to the conductive electrode 113, the buckle engages with the conductive electrode 113 to improve the connection strength between the light-emitting unit 12 and the conductive electrode 113. This prevents the light-emitting unit 12 from being disconnected from the conductive electrode 113 due to external force when the display device 100 is in normal working condition, thus preventing the light-emitting unit 12 from emitting light normally and improving the performance stability of the lamp board 10.

[0071] In some embodiments, the light-emitting unit 12 can be rotatably configured to connect or disconnect with the conductive electrode 113 during rotation. In this case, the latch can be configured as a snap-fit ​​structure with a side opening, allowing the conductive electrode 113 to enter and exit the latch from the side opening and engage or disengage with the latch. The latch can also be configured as an elastic latch, for example, by providing an elastic protrusion structure and a slot on the conductive electrode 113, allowing the elastic protrusion to enter and exit the slot.

[0072] Please refer to Figures 3 to 6 In some embodiments of this application, the lamp board 10 further includes a plurality of driving chips 17, each of the driving chips 17 being disposed in a lamp groove 111 and electrically connected to the substrate 11 and the lifting structure 13 in the lamp groove 111.

[0073] In this embodiment, a driver chip 17 is disposed in each lamp slot 111 of the lamp board 10. The driver chip 17 is electrically connected to the lifting structure 13 and other driving structures, as well as the substrate 11, to receive and transmit control signals to drive the lifting structure 13 and other driving structures to move, thereby controlling the position adjustment of the light-emitting unit 12. In some embodiments, the lamp slot 111 is also provided with a rotating structure 14 and a distance sensor 15, etc., so that the rotating structure 14 and the distance sensor 15 are electrically connected to the driver chip 17 to receive control signals and transmit sensing signals to the driver chip 17. This is not limited here.

[0074] Please refer to Figures 3 to 6 In some embodiments of this application, the bottom wall of the lamp groove 111 is provided with a clearance groove 112, and the driving chip 17 is disposed in the clearance groove 112.

[0075] In this embodiment, an avoidance groove 112 is provided on the bottom wall of the lamp groove 111 to accommodate the driver chip 17, and can also accommodate part of the lifting structure 13, so as to avoid the driver chip 17 being located in the lamp groove 111. This can increase the adjustable range of the light-emitting unit 12, thereby increasing the viewing angle adjustment range of the display device 100 and improving the flexibility of viewing angle adjustment.

[0076] Please refer to Figure 1This application also proposes a display device 100, which includes a lamp panel 10 as described in any of the foregoing embodiments. The display device 100 proposed in this application can be a direct-lit LCD liquid crystal display device 100 or a miniLED display device 100. The lamp panel 10 can be used as a backlight source, or it can be directly used as a display for the display device 100. In the illustrated embodiment, the lamp panel 10 serves as a backlight source. An optical film 30 and a display screen 20 are sequentially stacked on the light-emitting surface of the lamp panel 10. Furthermore, a housing 40 or a driver board is provided in the display device 100 to support the lamp panel 10. The emission angle of each light-emitting unit 12 in the lamp panel 10 determines the viewing angle of the display device 100. It is understood that the user cannot observe the light emission state of the light-emitting unit 12 outside of its light emission angle. In this embodiment, the lamp board 10 includes a substrate 11 and a plurality of light-emitting units 12 disposed on the substrate 11. The light-emitting units 12 can be light-emitting chips or lamp beads, which are not limited here. The substrate 11 can be a circuit board, and a plurality of lamp slots 111 are formed on the substrate 11. The lamp slots 111 are arranged in an array on the surface of the substrate 11, and the plurality of light-emitting units 12 are disposed in each lamp slot 111. The depth of the lamp slot 111 is greater than the thickness of the light-emitting unit 12, so that each light-emitting unit 12 can rise and fall in the lamp slot 111 in which it is located, and the light-emitting surface of each light-emitting unit 12 is not higher than the opening of the lamp slot 111. The light-emitting unit 12 is a point light source. When the light-emitting unit 12 emits light, the light diffuses out in all directions around the light-emitting unit 12. When the light-emitting surface of the light-emitting unit 12 is lower than the opening of the lamp slot 111, part of the light emitted by the light-emitting unit 12 will be blocked by the wall of the lamp slot 111, and only part of the light will be emitted from the opening of the lamp slot 111. It is understandable that the maximum angle of light emitted from the light-emitting unit 12 from the lamp groove 111 is the angle of the line connecting the light-emitting surface of the light-emitting unit 12 and the edge of the lamp groove 111. Thus, when the light-emitting unit 12 moves up and down in the lamp groove 111, the light blocked by the lamp groove 111 wall varies depending on the depth of the light-emitting unit 12, and the angle of light emitted from the lamp groove 111 also varies. The deeper the light-emitting unit 12 is, the more light is blocked, and the less light can be emitted from the lamp groove 111. At this time, the divergence angle of the light emitted from the lamp groove 111 by the light-emitting unit 12 is also smaller, resulting in a smaller viewing angle of the display device 100. When the light-emitting unit 12 is close to the lamp groove 111, the angle between the line connecting the light-emitting unit 12 and the edge of the lamp groove 111 and the depth direction of the lamp groove 111 is larger, and the light emitted from the lamp groove 111 by the light-emitting unit 12 has a larger divergence angle, resulting in a larger viewing angle of the display device 100.

[0077] The lifting of the light-emitting unit 12 is generally driven by the lifting structure 13. The lifting structure 13 can be a combination of a lifting motor or other driving components and transmission structures.

[0078] Therefore, it is understandable that in the technical solution of this application, in the lamp panel 10 serving as the backlight of the display device 100, the light-emitting unit 12 is movably disposed in the lamp groove 111 of the substrate 11. Since some light emitted by the light-emitting unit 12 is blocked by the groove wall of the lamp groove 111, and the angle of the emitted light varies depending on the depth of the light-emitting unit 12 within the lamp groove 111, the deeper the light-emitting unit 12 is, the smaller the angle of the light emitted through the opening of the lamp groove 111; conversely, the closer the light-emitting unit 12 is to the opening of the lamp groove 111, the larger the angle of the light emitted through the opening of the lamp groove 111. That is, when it is necessary to switch the display device 100 to a wide viewing angle, the light-emitting unit 12 is lifted upwards, allowing the light-emitting unit 12 to emit light more light. The increased light angle widens the viewing angle of the display device 100, enabling a change from narrow to wide viewing angle. When a narrow viewing angle is needed, the light-emitting unit 12 is lowered, reducing its light-emitting angle and thus decreasing the viewing angle of the display device 100. This allows for a change from wide to narrow viewing angle. Furthermore, during the raising and lowering of the light-emitting unit 12 within the lamp slot 111, the light emitted by the light-emitting unit 12 at all circumferential angles is affected and blocked by the wall of the lamp slot 111. Therefore, the display device 100 can switch between wide and narrow viewing angles at any angle, and this switching can be achieved simply by raising and lowering the light-emitting unit 12, making the operation simple. Additionally, the light-emitting unit 12 can be raised and lowered to any depth within the lamp slot 111 to adjust the viewing angle of the display device 100, making the viewing angle adjustment of the display device 100 more flexible.

[0079] Since the display device 100 proposed in this application applies all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought by all the foregoing technical solutions, which will not be described in detail here.

[0080] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A light panel, characterized in that, include: A substrate having multiple lamp slots arranged in an array on it; and Multiple light-emitting units, each of which is vertically and vertically disposed in a lamp slot, with the light-emitting surface of the light-emitting unit facing the opening of the lamp slot; At least two conductive electrodes are sequentially arranged on the sidewall of the lamp slot along the depth direction of the lamp slot. The light-emitting unit can be electrically connected to any of the conductive electrodes to receive power and display signals through the substrate to emit light. Multiple lifting structures are provided, each of which is located in one of the lamp slots and is connected to the light-emitting unit in the lamp slot to drive the light-emitting unit to rise and fall. A rotating structure is driven to the lifting structure and the light-emitting unit, and can drive the light-emitting unit to rotate along the plane where the light-emitting unit is located, so that the light-emitting unit is connected to or disconnected from the conductive electrode.

2. The lamp panel as described in claim 1, characterized in that, The circumferential edge of the light-emitting unit is defined to have a first position and a second position that are spaced apart, and the distance between the first position and the center of the rotation axis of the light-emitting unit is greater than the distance between the second position and the center of the rotation axis of the light-emitting unit; The first position is provided with a conductive structure. When the first position faces the conductive electrode, the conductive structure is electrically connected to the conductive electrode. When the second position faces the conductive electrode, the light-emitting unit is spaced apart from the conductive electrode.

3. The lamp panel as described in claim 2, characterized in that, The light panel also includes multiple distance sensors, and at least one distance sensor is provided on the bottom wall of each light slot to detect the depth of the light-emitting unit in the light slot.

4. The lamp panel as described in claim 3, characterized in that, Each of the lamp slots is provided with at least two of the distance measuring sensors, and two of the distance measuring sensors are arranged at intervals along the rotation direction of the light-emitting unit, and at least one of the distance measuring sensors is located within the orthographic projection range of the light-emitting unit on the bottom wall of the lamp slot. And / or, with the distance between the edge of the light-emitting unit and the center of the rotation axis as the rotation radius, at least one of the ranging sensors is located within the orthographic projection range of the rotation area formed by the shortest rotation radius of the light-emitting unit on the bottom wall of the lamp slot.

5. The lamp panel as described in any one of claims 1 to 4, characterized in that, The lamp panel also includes multiple support plates, each of which is disposed in a lamp groove and is connected to the lifting structure in the lamp groove for transmission, and supports the light-emitting unit.

6. The lamp panel as described in any one of claims 1 to 4, characterized in that, The bottom wall of the lamp trough is provided with a clearance groove, and the lamp board also includes multiple driving chips. Each driving chip is disposed in one of the clearance grooves and is electrically connected to the substrate and the lifting structure in the lamp trough.

7. A display device, characterized in that, The display device includes a lamp panel as described in any one of claims 1 to 6.

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