Quantum dot light-emitting module and LED display screen

Abstract

The application relates to the technical field of light-emitting modules and display devices, and discloses a quantum dot light-emitting module and an LED display screen, which comprise a back plate, the surface of the back plate is provided with a circuit board, the surface of the circuit board is electrically connected with an LED light source, the top of the LED light source is bonded with a uniform light lens, the top of the uniform light lens is bonded with a diffusing lens, the diffusing lens and the uniform light lens are connected with a quantum dot film, the surface of the back plate is provided with an outer frame, the inner side of the outer frame is provided with an optical film, the surface of the uniform light lens and the circuit board is provided with a docking assembly facilitating installation, the quantum dot light-emitting module and the LED display screen are characterized in that the fixing sleeve is inserted into the connecting seat, the spring, the moving block and the connecting rod are used to make the clamping plate enter the clamping hole, the fixing sleeve is limited, the LED light source, the uniform light lens and the like are stabilized, personnel can be conveniently installed, quick fixing is facilitated, and the installation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of light-emitting modules and display devices, in particular to a quantum dot light-emitting module and an LED display screen. BACKGROUND

[0002] In current display products, quantum dot technology excites quantum dot materials by blue LED light to produce mixed white light of multiple wavelengths such as green and red, so as to improve the color saturation of display products such as televisions. Existing quantum dot products usually dissolve photoluminescence quantum dot materials in a colloid, coat them on a PET material, and attach a water and oxygen barrier film to form a quantum dot film, which is applied to a component backlight.

[0003] According to a quantum dot light-emitting module and a quantum dot display device (publication number: CN214278582U), the above application is fixed to the circuit board through multiple supports, which can support the uniform light lens and the diffuser lens to increase stability.

[0004] However, the quantum dot light-emitting module mentioned in the above application has some problems in actual installation. This module is fixed to the circuit board through multiple supports, and this fixing method usually uses adhesion, welding or bolt connection. However, in actual operation, due to the small operation space and the small size of the light-emitting module itself, it is not convenient for personnel to quickly fix it. This results in a longer installation and assembly process and lower installation efficiency. SUMMARY

[0005] The present application aims to provide a quantum dot light-emitting module and an LED display screen to solve the problems mentioned in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a quantum dot light-emitting module, comprising a back plate, the surface of the back plate is mounted with a circuit board, the surface of the circuit board is electrically connected with an LED light source, the top of the LED light source is bonded with a uniform light lens, the top of the uniform light lens is bonded with a diffuser lens, the diffuser lens and the uniform light lens are connected with a quantum dot film, the surface of the back plate is mounted with an outer frame, the inner side of the outer frame is mounted with an optical film, the inner side of the outer frame is mounted with a diffusion plate, the surface of the uniform light lens and the circuit board is provided with a docking assembly for easy installation, a linkage assembly for easy disassembly and replacement, and a limiting assembly to prevent accidental touch and falling off, the docking assembly comprises:

[0007] A fixing sleeve is fixed to the bottom of the uniform light lens, and a clamping hole is formed in the surface of the fixing sleeve.

[0008] Preferably, the docking assembly further comprises a connecting seat fixed on the surface of the circuit board, a cavity is formed in the connecting seat, and a sliding groove is formed in the inner wall of the cavity; the connecting seat is provided with four groups of sliding grooves, and the four groups of sliding grooves are arranged in a circular array with the center of the cavity as the axis; a clamping plate and a moving block are slidably connected to the inner wall of the sliding groove; a connecting rod is hingedly connected to the surface of the clamping plate; the end of the connecting rod away from the clamping plate is hingedly connected to the surface of the moving block; a spring one is fixed on the surface of the clamping plate; the end of the spring one away from the clamping plate is fixed on the inner wall of the cavity; and the end of the clamping plate away from the spring one penetrates through the cavity and is slidably connected to the connecting seat.

[0009] Preferably, the connecting assembly comprises a fixed seat fixed on the surface of the connecting seat, a circular plate rotatably connected to the surface of the fixed seat, a handle fixed on the surface of the circular plate, and a rotating rod fixed on the side of the circular plate away from the handle; the end of the rotating rod away from the circular plate penetrates through the fixed seat, the connecting seat and the moving block, and the rotating rod is rotatably connected to the fixed seat and the connecting seat; a short rod is fixed on the inner side of the moving block; an arc-shaped sliding groove is formed in the surface of the rotating rod; the end of the short rod away from the moving block extends into the arc-shaped sliding groove, and the surface of the short rod abuts against the inner wall of the arc-shaped sliding groove; a stabilizing column is fixed on the surface of the fixed seat; a connecting groove is formed in the surface of the stabilizing column; a connecting block is slidably connected to the inner wall of the connecting groove; a spring two is fixed on the surface of the connecting block; the end of the spring two away from the connecting block is fixed on the inner wall of the connecting groove; and a clamping groove is formed in the surface of the circular plate; when the handle is rotated, the circular plate is rotated, the connecting block can intermittently enter the connecting groove through the spring two, and the normal rotation of the circular plate is not affected; at the same time, when the circular plate is rotated, the rotating rod is rotated, the inner wall of the arc-shaped sliding groove abuts against the surface of the short rod, the moving block is driven to move away from the circular plate, the connecting rod is flipped, the clamping plate is pulled away from the clamping hole, and the disassembly is facilitated.

[0010] Preferably, the limiting assembly comprises a fixing ring fixed on the surface of the fixing base, the stabilizing column penetrates the fixing base, the surface of the fixing base is provided with a insertion hole, the surface of the connecting block is fixed with a fixing rod, the end of the fixing rod away from the connecting block penetrates the stabilizing column and the fixing rod is in sliding connection with the stabilizing column, the inner side of the fixing ring is provided with a stabilizing groove, the sliding column is in sliding connection with the inner wall of the stabilizing groove, the surface of the sliding column is fixed with a spring three, the end of the spring three away from the sliding column is fixed on the inner wall of the stabilizing groove, the surface of the stabilizing column is provided with a limiting groove one, the surface of the stabilizing column is provided with a limiting groove two, the surface of the stabilizing column is fixed with a top plate, the surface of the fixing ring is fixed with a round rod, the end of the round rod away from the fixing ring penetrates the top plate and the round rod is in sliding connection with the top plate, the end of the round rod away from the fixing ring is fixed with a pull plate, the sliding column enters the limiting groove one by pressing the pull plate, the inner side of the fixing ring shields the insertion hole so that the handle cannot normally rotate to drive the round plate and the rotating rod to rotate, the pull plate is pulled up, the sliding column enters the limiting groove two and the fixing rod can normally enter the insertion hole so that the round plate can normally rotate.

[0011] Preferably, the end of the clamping plate away from the spring one is provided with an inclined surface, when the surface of the fixing sleeve is in contact with the inclined surface, the clamping plate can move to facilitate butt joint installation.

[0012] Preferably, the end of the connecting block away from the spring two is provided with a triangular cross section, when the inner wall of the clamping groove is in contact with the surface of the connecting block, the connecting block can enter the connecting groove without affecting the normal rotation of the round plate.

[0013] Preferably, the end of the sliding column away from the spring three is provided with an arc shape, which does not affect the normal movement of the fixing ring.

[0014] Preferably, the clamping plate and the moving block are provided with two groups, the two groups of clamping plates and moving blocks are symmetrically arranged about the center line of the connecting seat as the axis of symmetry, and the linkage assembly is arranged on the surface of one of the two groups of moving blocks, so that the stability of the movement of the clamping plate and the moving block is improved, and the stability of the connection between the fixing sleeve and the circuit board is improved.

[0015] Preferably, the LED display screen comprises a display module and the above-mentioned quantum dot light-emitting module.

[0016] Compared with the prior art, the quantum dot light-emitting module and the LED display screen have the following beneficial effects:

[0017] 1. The quantum dot light-emitting module and the LED display screen, through the butt joint assembly, the fixing sleeve is inserted into the connecting seat, the spring one, the moving block and the linkage rod enable the clamping plate to enter the clamping hole, the fixing sleeve is limited, the LED light source and the uniform light lens are stabilized, personnel can be conveniently installed, rapid fixing is facilitated, and the installation efficiency is improved.

[0018] 2、The quantum dot light-emitting module and the LED display screen, when the individual LED light source needs to be replaced, the handle can be rotated, the circular plate drives the rotating rod to rotate, the arc-shaped sliding groove inner wall abuts against the short rod surface, the moving block can be driven to move away from the circular plate, at this time, the connecting rod is turned over, the clamping plate is pulled away from the clamping hole, and the disassembly is facilitated, the LED light source to be replaced can be taken out, replacement is facilitated, and the connecting block can be intermittently arranged in the connecting groove through the spring two, and normal rotation of the circular plate is not affected.

[0019] 3、The quantum dot light-emitting module and the LED display screen, through the setting of the limiting assembly, the lower pull plate is pressed, the sliding column is arranged in the limiting groove one, the inner side of the fixing ring abuts against the insertion hole, at this time, the insertion rod cannot normally enter the insertion hole, the handle, the circular plate and the rotating rod cannot rotate, the LED light source, the uniform light lens and the like are prevented from being separated from the circuit board due to accidental touch during assembly, and the upper pull plate is pulled, the sliding column is arranged in the limiting groove two, the fixing rod can normally enter the insertion hole, and the circular plate can normally rotate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present application;

[0021] Figure 2 It is an explosion structural schematic diagram of the present application;

[0022] Figure 3 It is a local explosion front view structural schematic diagram of the present application;

[0023] Figure 4 It is a local plan view structural schematic diagram of the present application;

[0024] Figure 5 It is a connecting seat internal structure schematic diagram of the present application;

[0025] Figure 6 It is a local sectional view front view structural schematic diagram of the present application;

[0026] Figure 7 It is a local side view structural schematic diagram of the present application;

[0027] Figure 8 It is a local front view structural schematic diagram of the present application;

[0028] Figure 9 It is a local back view structural schematic diagram of the present application;

[0029] Figure 10 It is a local sectional view bottom view structural schematic diagram of the present application.

[0030] In the figure: 1, back plate; 2, LED light source; 3, homogenizing lens; 4, quantum dot film; 5, diffusing lens; 9, circuit board; 10, optical film; 11, outer frame; 12, display module; 13, diffusion plate; 6, docking assembly; 60, fixing sleeve; 61, clamping hole; 62, connecting seat; 63, cavity; 64, sliding groove; 65, clamping plate; 66, moving block; 67, connecting rod; 68, spring one; 7, connecting assembly; 70, fixing seat; 71, round plate; 72, handle; 73, rotating rod; 74, short rod; 75, arc-shaped sliding groove; 76, stabilizing column; 77, connecting groove; 78, spring two; 79, connecting block; 700, clamping groove; 8, limiting assembly; 80, fixing ring; 81, fixing rod; 82, insertion hole; 83, stabilizing groove; 84, sliding column; 85, spring three; 86, limiting groove one; 87, limiting groove two; 88, top plate; 89, round rod; 800, pull plate. DETAILED DESCRIPTION

[0031] As Figures 1-10As shown, the present application provides a technical scheme: a quantum dot light-emitting module, comprising a back plate 1, the surface of the back plate 1 is mounted with a circuit board 9, the surface of the circuit board 9 is electrically connected with an LED light source 2, the top of the LED light source 2 is bonded with a uniform light lens 3, the top of the uniform light lens 3 is bonded with a light dispersing lens 5, the light dispersing lens 5 is connected with the uniform light lens 3, the surface of the back plate 1 is mounted with an outer frame 11, the inner side of the outer frame 11 is mounted with an optical film 10, the inner side of the outer frame 11 is mounted with a diffusion plate 13, the surface of the uniform light lens 3 and the circuit board 9 is provided with a docking assembly 6 for convenient installation, a linkage assembly 7 for convenient disassembly and replacement, and a limiting assembly 8 for preventing accidental touch from falling off, the docking assembly 6 comprises: a fixed sleeve 60, the fixed sleeve 60 is fixed at the bottom of the uniform light lens 3, the surface of the fixed sleeve 60 is provided with a clamping hole 61, the docking assembly 6 further comprises a connecting seat 62, the connecting seat 62 is fixed on the surface of the circuit board 9, the inside of the connecting seat 62 is provided with a cavity 63, the inner wall of the cavity 63 is provided with a sliding groove 64, the sliding groove 64 is provided with four groups, and the four groups of sliding grooves 64 are circumferentially arranged with the center of the cavity 63 as the axis, the inner wall of the sliding groove 64 is slidably connected with a clamping plate 65 and a moving block 66, the surface of the clamping plate 65 is hinged with a linkage rod 67, one end of the linkage rod 67 away from the clamping plate 65 is hinged to the surface of the moving block 66, the surface of the clamping plate 65 is fixed with a spring one 68, one end of the spring one 68 away from the clamping plate 65 is fixed on the inner wall of the cavity 63, one end of the clamping plate 65 away from the spring one 68 penetrates the cavity 63, and the clamping plate 65 is slidably connected with the connecting seat 62, the surface of one end of the clamping plate 65 away from the spring one 68 is provided as an inclined surface, the clamping plate 65 and the moving block 66 are provided with two groups, and the two groups of clamping plates 65 and moving blocks 66 are symmetrically arranged with the center line of the connecting seat 62 as the symmetry axis, the linkage assembly 7 is arranged on the surface of one of the two groups of moving blocks 66, the fixed sleeve 60 is inserted into the connecting seat 62, the surface of the fixed sleeve 60 abuts against the inclined surface of the clamping plate 65, through the spring one 68, the moving block 66 and the linkage rod 67, the clamping plate 65 enters the clamping hole 61, thereby limiting the fixed sleeve 60, stabilizing the LED light source 2, the uniform light lens 3 and the like, and facilitating personnel to install.

[0032] The linkage assembly 7 comprises a fixing seat 70 fixed on the surface of the connecting seat 62, a circular plate 71 rotatably connected to the surface of the fixing seat 70, a handle 72 fixed on the surface of the circular plate 71, a rotating rod 73 fixed on the side of the circular plate 71 away from the handle 72, one end of the rotating rod 73 away from the circular plate 71 penetrating through the fixing seat 70, the connecting seat 62 and the moving block 66, and the rotating rod 73 being rotatably connected with the fixing seat 70 and the connecting seat 62, a short rod 74 fixed on the inner side of the moving block 66, an arc-shaped sliding slot 75 formed on the surface of the rotating rod 73, one end of the short rod 74 away from the moving block 66 extending into the arc-shaped sliding slot 75 and the surface of the short rod 74 being in abutment with the inner wall of the arc-shaped sliding slot 75, a stabilizing column 76 fixed on the surface of the fixing seat 70, a connecting slot 77 formed on the surface of the stabilizing column 76, a connecting block 79 slidably connected with the inner wall of the connecting slot 77, a spring 78 fixed on the surface of the connecting block 79, one end of the spring 78 away from the connecting block 79 being fixed on the inner wall of the connecting slot 77, a clamping slot 700 formed on the surface of the circular plate 71, and the end of the connecting block 79 away from the spring 78 being triangular in cross section. When the LED light source 2 needs to be replaced, the handle 72 is rotated, the circular plate 71 is rotated, the connecting block 79 is intermittently allowed to enter the connecting slot 77 through the spring 78, the normal rotation of the circular plate 71 is not affected, at the same time, the rotating of the circular plate 71 drives the rotating rod 73 to rotate, the rotating rod 73 drives the arc-shaped sliding slot 75 to synchronously rotate, at this time, the inner wall of the arc-shaped sliding slot 75 is in abutment with the surface of the short rod 74, the moving block 66 is driven to move away from the circular plate 71, the linkage rod 67 is flipped, the clamping plate 65 is pulled away from the clamping hole 61, at this time, the LED light source 2, the uniform light lens 3 and the like can be taken out, and the LED light source 2 is replaced.

[0033] The limiting assembly 8 comprises a fixing ring 80 fixed on the surface of the fixing base 70, the stable column 76 penetrates the fixing base 70, the surface of the fixing base 70 is provided with an insertion hole 82, the surface of the connecting block 79 is fixedly provided with a fixing rod 81, one end of the fixing rod 81 away from the connecting block 79 penetrates the stable column 76 and is in sliding connection with the stable column 76, the inner side of the fixing ring 80 is provided with a stable groove 83, the stable groove 83 is in sliding connection with a sliding column 84, the surface of the sliding column 84 is fixedly provided with a spring three 85, one end of the spring three 85 away from the sliding column 84 is fixed on the inner wall of the stable groove 83, the surface of the stable column 76 is provided with a limiting groove one 86, the surface of the stable column 76 is provided with a limiting groove two 87, the surface of the stable column 76 is fixedly provided with a top plate 88, the surface of the fixing ring 80 is fixedly provided with a round rod 89, one end of the round rod 89 away from the fixing ring 80 penetrates the top plate 88 and is in sliding connection with the top plate 88, one end of the round rod 89 away from the fixing ring 80 is fixedly provided with a pull plate 800, one end of the sliding column 84 away from the spring three 85 is provided in an arc shape, the pull plate 800 is pressed downwards, the sliding column 84 is arranged in the limiting groove one 86, the inner side of the fixing ring 80 is in abutment with the surface of the fixing base 70, at the moment, the inner side of the fixing ring 80 shields the insertion hole 82, the handle 72 cannot be normally rotated to drive the round plate 71 and the rotating rod 73 to rotate, and the LED light source 2, the light homogenizing lens 3 and the like can be prevented from being separated from the circuit board 9 due to accidental touch during assembly.

[0034] The LED display screen comprises a display module 12 and a display screen body composed of the quantum dot light-emitting module.

[0035] When installation is needed, pull the pull plate 800, which drives the round rod 89 and the fixed ring 80 to move upwards, and the surface of the sliding column 84 is in contact with the inner wall of the limiting groove one 86, so that the sliding column 84 enters the stable groove 83, and the spring three 85 is compressed. When the top of the fixed ring 80 is in contact with the surface of the top plate 88, the position of the sliding column 84 is parallel to the limiting groove two 87, the spring three 85 is released, the sliding column 84 enters the limiting groove two 87, and the fixed ring 80 is stabilized. At this time, the position of the insertion hole 82 is parallel to the position of the fixed rod 81, and the fixed sleeve 60 is inserted into the connecting seat 62. At this time, the surface of the fixed sleeve 60 is in contact with the inclined surface of the clamping plate 65, the clamping plate 65 enters the cavity 63, and the spring one 68 is compressed. When the clamping plate 65 moves, the connecting rod 67 is turned over, and the moving block 66 is driven to move synchronously. When the position of the clamping plate 65 is parallel to the position of the clamping hole 61, the spring one 68 is released, and the clamping plate 65 and the moving block 66 are reset. At this time, the clamping plate 65 enters the clamping hole 61, and the fixed sleeve 60 is limited, stabilizing the LED light source 2, the light uniformity lens 3, etc. It is convenient for personnel to install. When the moving block 66 moves, the surface of the short rod 74 is in contact with the arc-shaped sliding groove 75, so that the rotating rod 73 rotates and synchronously drives the round plate 71 to rotate. At this time, the inner wall of the clamping groove 700 is in contact with the surface of the connecting block 79, and the connecting block 79 enters the connecting groove 77, and the spring two 78 is compressed. When the position of the connecting block 79 is parallel to the clamping groove 700, the spring two 78 is released, and the connecting block 79 enters the clamping groove 700, which does not affect the normal rotation of the round plate 71. When the connecting block 79 moves, the fixed rod 81 moves synchronously, and the connecting block 79 enters the connecting groove 77. When the fixed rod 81 passes through the insertion hole 82, it does not affect the normal movement of the connecting block 79. When the fixed sleeve 60 and the clamping plate 65 are limited, press the pull plate 800 downward, so that the sliding column 84 enters the limiting groove one 86, and the fixed ring 80 is in contact with the surface of the fixed seat 70. At this time, the inside of the fixed ring 80 blocks the insertion hole 82, so that the handle 72 cannot normally drive the round plate 71 and the rotating rod 73 to rotate. This can avoid the LED light source 2, the light uniformity lens 3, etc. from being separated from the circuit board 9 due to accidental touch during assembly. The optical film 10 can include a polarizing sheet, a filter, etc. The display module 12 can use a liquid crystal panel, etc. In use, the light uniformity lens 3 disperses the light of the LED light source 2 into a uniform surface light source or a ring-shaped light source, excites the quantum dot material to produce multi-band composite light (i.e. mixed into white light), and then disperses and uniformizes the light through the light dispersing lens 5 according to the optical requirements. This can reduce the use area of the quantum dot material or the quantum dot film 4, reduce the cost, and reduce the harm of chemical element release to the human body. The LED light source 2 is located below the light uniformity lens 3, the light uniformity lens 3 can emit heat radiation of the LED light source 2, reduce the maximum conversion light intensity of the quantum dot material layer, control heat release, make the quantum dot material work at a suitable temperature, and ensure stable use. The light uniformity lens 3 can also uniformize the light of the LED light source 2, so that the light conversion efficiency of each position of the quantum dot material is basically consistent, and the color of the emitted light is uniform.The diffused homogenization light is diffused by the diffusing plate 13, the optical film 10 and the display module 12, and then forms high color saturation light. When one of the LED light sources 2 needs to be replaced, the pull plate 800 is pulled, so that the slide column 84 enters the limiting groove two 87, the fixing ring 80 no longer blocks the insertion hole 82, at this time the handle 72 can be normally rotated to synchronously drive the round plate 71 to rotate, the connecting block 79 and the fixed rod 81 can normally move in the connecting groove 77 and the insertion hole 82, and at the same time when the round plate 71 rotates, the rotating rod 73 drives the arc-shaped sliding groove 75 to synchronously rotate, at this time the inner wall of the arc-shaped sliding groove 75 abuts against the surface of the short rod 74, so as to drive the moving block 66 to move away from the round plate 71, at this time the connecting rod 67 is flipped to pull the clamping plate 65 away from the clamping hole 61, at this time the LED light source 2, the homogenization lens 3 and the like can be taken out, and the LED light source 2 is replaced.

[0036] The above detailed description is made to the application in general, but some modifications or improvements can be made on the basis of the application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the application are within the protection scope of the application.

Claims

1. A quantum dot light-emitting module, comprising a backplate (1), characterized in that: A circuit board (9) is mounted on the surface of the back plate (1). An LED light source (2) is electrically connected to the surface of the circuit board (9). A uniform light lens (3) is bonded to the top of the LED light source (2). A diffusing lens (5) is bonded to the top of the uniform light lens (3). A quantum dot film (4) is connected between the diffusing lens (5) and the uniform light lens (3). An outer frame (11) is mounted on the surface of the back plate (1). An optical film (10) is mounted on the inner side of the outer frame (11). A diffuser plate (13) is mounted on the inner side of the outer frame (11). The surfaces of the uniform light lens (3) and the circuit board (9) are provided with a docking assembly (6) for easy installation, a linkage assembly (7) for easy disassembly and replacement, and a limiting assembly (8) to prevent accidental detachment. The docking assembly (6) includes a fixing sleeve (60), which is fixed to the bottom of the uniform light lens (3). A locking hole (61) is opened on the surface of the fixing sleeve (60). The docking assembly (6) further includes a connector (62), which is fixed to the surface of the circuit board (9). The connector (62) has a cavity (63) inside, and a sliding groove (64) is formed on the inner wall of the cavity (63). Four sets of sliding grooves (64) are arranged, and each set is arranged in a circular array around the center of the cavity (63). A retaining plate (65) and a moving block (66) are slidably connected to the inner wall of the sliding groove (64). A connecting rod (67) is hinged to the surface of the card plate (65). The end of the connecting rod (67) away from the card plate (65) is hinged to the surface of the moving block (66). A spring (68) is fixed to the surface of the card plate (65). The end of the spring (68) away from the card plate (65) is fixed to the inner wall of the cavity (63). The end of the card plate (65) away from the spring (68) passes through the cavity (63). The card plate (65) is slidably connected to the connecting seat (62).

2. The quantum dot light-emitting module according to claim 1, characterized in that: The linkage assembly (7) includes a fixed base (70), which is fixed to the surface of a connecting base (62). A circular plate (71) is rotatably connected to the surface of the fixed base (70). A handle (72) is fixed to the surface of the circular plate (71). A rotating rod (73) is fixed to the side of the circular plate (71) away from the handle (72). The end of the rotating rod (73) away from the circular plate (71) passes through the fixed base (70), the connecting base (62), and the moving block (66). The rotating rod (73) is rotatably connected to the fixed base (70) and the connecting base (62). A short rod (74) is fixed to the inner side of the moving block (66). The surface of the rotating rod (73) An arc-shaped sliding groove (75) is provided. The end of the short rod (74) away from the moving block (66) extends into the arc-shaped sliding groove (75), and the surface of the short rod (74) abuts against the inner wall of the arc-shaped sliding groove (75). A stabilizing column (76) is fixed on the surface of the fixed seat (70). A connecting groove (77) is provided on the surface of the stabilizing column (76). A connecting block (79) is slidably connected to the inner wall of the connecting groove (77). A second spring (78) is fixed on the surface of the connecting block (79). The end of the second spring (78) away from the connecting block (79) is fixed on the inner wall of the connecting groove (77). A slot (700) is provided on the surface of the circular plate (71).

3. A quantum dot light-emitting module according to claim 2, characterized in that: The limiting component (8) includes a fixing ring (80), which is fixed to the surface of the fixing base (70). The stabilizing column (76) passes through the fixing base (70). The surface of the fixing base (70) is provided with an insertion hole (82). The surface of the connecting block (79) is fixed with a fixing rod (81). One end of the fixing rod (81) away from the connecting block (79) passes through the stabilizing column (76), and the fixing rod (81) is slidably connected to the stabilizing column (76). The inner side of the fixing ring (80) is provided with a stabilizing groove (83). The inner wall of the stabilizing groove (83) is slidably connected with a sliding column (84). The surface of the sliding column (84) is fixed. A spring three (85) is fixed, and the end of the spring three (85) away from the sliding column (84) is fixed on the inner wall of the stabilizing groove (83). A limiting groove one (86) is opened on the surface of the stabilizing column (76), and a limiting groove two (87) is opened on the surface of the stabilizing column (76). A top plate (88) is fixed on the surface of the stabilizing column (76), and a round rod (89) is fixed on the surface of the fixing ring (80). The end of the round rod (89) away from the fixing ring (80) passes through the top plate (88), and the round rod (89) is slidably connected to the top plate (88). A pull plate (800) is fixed on the end of the round rod (89) away from the fixing ring (80).

4. A quantum dot light-emitting module according to claim 1, characterized in that: The surface of the card plate (65) away from the spring (68) is set as an inclined surface.

5. A quantum dot light-emitting module according to claim 2, characterized in that: The cross-section of the end of the connecting block (79) away from the second spring (78) is triangular.

6. A quantum dot light-emitting module according to claim 3, characterized in that: The end of the slide bar (84) away from the spring (85) is set in an arc shape.

7. A quantum dot light-emitting module according to claim 1, characterized in that: The card plate (65) and the moving block (66) are provided in two sets, and the two sets of card plates (65) and moving blocks (66) are symmetrically arranged with the center line of the connecting seat (62) as the axis of symmetry. The linkage component (7) is provided on the surface of one of the two sets of moving blocks (66).

8. An LED display screen, characterized in that: The display body comprises a display module (12) and a quantum dot light-emitting module as described in any one of claims 1 to 7.

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