Quantum dot light-emitting module and LED display screen

Abstract

The invention 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, the quantum dot light-emitting module comprises a back plate, a circuit board is mounted on the surface of the back plate, an LED light source is electrically connected to the surface of the circuit board, a dodging lens is bonded to the top of the LED light source, a diverging lens is bonded to the top of the dodging lens, and the diverging lens is electrically connected to the surface of the circuit board. The quantum dot light-emitting module and the LED display screen are characterized in that a light diffusing lens and a light uniformizing lens are arranged on the surface of the back plate, a quantum dot film is connected between the light diffusing lens and the light uniformizing lens, an outer frame is installed on the surface of the back plate, an optical film is installed on the inner side of the outer frame, and butt joint assemblies convenient to install are arranged on the surfaces of the light uniformizing lens and the circuit board. And through a first spring, a movable block and a linkage rod, a clamping plate enters a clamping hole, a fixing sleeve can be limited, the LED light source, the dodging lens and the like are stabilized, installation by personnel is facilitated, rapid fixing is facilitated, and the installation efficiency is improved.

Description

Technical Field

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

[0002] In current display products, quantum dot technology uses blue LED to photoexcite quantum dot materials to produce green, red and other mixed white light wavelengths to improve the color saturation of display products such as TVs. Existing quantum dot products usually dissolve photoluminescent quantum dot materials in colloids, apply them on PET materials, and attach water and oxygen barrier films to form quantum dot films, which are used in component backlight sources.

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

[0004] However, the quantum dot light-emitting module mentioned in the above application has some problems in actual installation. The module is fixed to the circuit board through multiple pillars, which is usually fixed by bonding, welding or bolting. However, in actual operation, due to the small operating space and the small size of the light-emitting module itself, it is not convenient for personnel to quickly fix it. This results in the installation and assembly process taking a long time and low installation efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a quantum dot light-emitting module and an LED display screen to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a quantum dot light-emitting module, comprising a back plate, a circuit board is installed on the surface of the back plate, an LED light source is electrically connected to the surface of the circuit board, a uniform light lens is bonded to the top of the LED light source, a diffuse light lens is bonded to the top of the uniform light lens, a quantum dot film is connected between the diffuse light lens and the uniform light lens, an outer frame is installed on the surface of the back plate, an optical film is installed on the inner side of the outer frame, a diffusion plate is installed on the inner side of the outer frame, a docking component for easy installation, a linkage component for easy disassembly and replacement, and a limit component for preventing accidental touch from falling off are provided between the uniform light lens and the surface of the circuit board, and the docking component comprises:

[0007] A fixing sleeve is fixed on the bottom of the light homogenizing lens, and a clamping hole is provided on the surface of the fixing sleeve.

[0008] Preferably, the docking assembly also includes a connecting seat, which is fixed to the surface of the circuit board, and a cavity is opened inside the connecting seat, and a slide groove is opened on the inner wall of the cavity, and the slide grooves are provided with four groups, and the four groups of slide grooves are all arranged in a circular array with the center of the cavity as the axis, and the inner wall of the slide groove is slidably connected with a card plate and a moving block, and a connecting rod is hinged on the surface of the card plate, and one end of the connecting rod away from the card plate is hinged on the surface of the moving block, and a spring 1 is fixed on the surface of the card plate, and one end of the spring 1 away from the card plate is fixed on the inner wall of the cavity, and one end of the card plate away from the spring 1 passes through the cavity, and the card plate is slidably connected with the connecting seat, and the fixed sleeve is inserted into the connecting seat, and the card plate enters the card hole through the spring 1, the moving block and the connecting rod, so that the fixed sleeve can be limited, and the LED light source, the uniform light lens, etc. can be stabilized.

[0009] Preferably, the linkage assembly includes a fixed seat, the fixed seat is fixed to the surface of the connecting seat, a circular plate is rotatably connected to the surface of the fixed seat, a handle is fixed to the surface of the circular plate, a rotating rod is fixed to the side of the circular plate away from the handle, the end of the rotating rod away from the circular plate passes 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 to the inner side of the moving block, an arc-shaped sliding groove is opened on 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 conflicts with the inner wall of the arc-shaped sliding groove, and a stable The swivel chair cam is provided with a plurality of springs, each of which is connected to a plurality of locking plates, and the plurality of springs are connected to the plurality of locking plates by a plurality of locking plates.

[0010] Preferably, the limit assembly includes a fixing ring, the fixing ring is fixed to the surface of the fixing seat, the stabilizing column passes through the fixing seat, a plug hole is provided on the surface of the fixing seat, a fixing rod is fixed to the surface of the connecting block, one end of the fixing rod away from the connecting block passes through the stabilizing column, and the fixing rod is slidably connected to the stabilizing column, a stabilizing groove is provided on the inner side of the fixing ring, a sliding column is slidably connected to the inner wall of the stabilizing groove, a spring three is fixed to the surface of the sliding column, one end of the spring three away from the sliding column is fixed to the inner wall of the stabilizing groove, and a fixing rod is provided on the surface of the stabilizing column There is a limiting groove one, and a limiting groove two is provided on the surface of the stabilizing column. A top plate is fixed on the surface of the stabilizing column, and a round rod is fixed on the surface of the fixing ring. The end of the round rod away from the fixing ring passes through the top plate, and the round rod is slidably connected to the top plate. A pull plate is fixed on the end of the round rod away from the fixing ring. Pressing the pull plate down allows the sliding column to enter the limiting groove one, and the inner side of the fixing ring blocks the insertion hole, so that the handle cannot be turned normally to drive the round plate and the rotating rod to rotate. Pulling the pull plate up allows the sliding column to enter the limiting groove two, and the fixing rod can enter the insertion hole normally, so that the round plate can rotate normally.

[0011] Preferably, the end surface of the clamping plate away from the spring is arranged as an inclined surface, and when it contacts with the surface of the fixing sleeve, the clamping plate can be moved to facilitate docking installation.

[0012] Preferably, the cross section of the end of the connecting block away from the second spring is triangular, and when the circular plate rotates, the inner wall of the slot contacts the surface of the connecting block, allowing the connecting block to enter the connecting slot without affecting the normal rotation of the circular plate.

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

[0014] Preferably, the card plates and moving blocks are provided in two groups, and the two groups of card plates and moving blocks are symmetrically arranged with the center line of the connecting seat as the symmetry axis. The linkage component is arranged on the surface of one of the two groups of moving blocks, so as to improve the stability of the movement of the card plates and moving blocks, and can improve the stability of the connection between the fixed sleeve and the circuit board.

[0015] Preferably, an LED display screen includes a display module and a display screen body composed of the above-mentioned quantum dot light-emitting module.

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

[0017] 1. The quantum dot light-emitting module and LED display screen are provided with a docking assembly, and the fixing sleeve is inserted into the connecting seat. The card plate is inserted into the card hole through the spring, the moving block, and the connecting rod, so that the fixing sleeve can be limited, the LED light source, the uniform light lens, etc. can be stabilized, which is convenient for personnel to install, fast fixation, and improve installation efficiency.

[0018] 2. The quantum dot light-emitting module and LED display screen, through the provided linkage assembly, when a single LED light source needs to be replaced, the handle can be turned, the circular plate drives the rotating rod to rotate, and the inner wall of the arc-shaped slide groove contacts the surface of the short rod, which can drive the moving block to move away from the circular plate. At this time, the linkage rod flips, and the card plate is pulled out of the card hole for easy disassembly. At this time, the LED light source to be replaced can be taken out for easy replacement. At the same time, through the second spring, the connecting block can intermittently enter the connecting groove without affecting the normal rotation of the circular plate.

[0019] 3. The quantum dot light-emitting module and LED display screen, through the set limit assembly, press the pull plate down, the sliding column enters the limit groove 1, and the inner side of the fixed ring blocks the socket. At this time, the plug rod cannot enter the socket normally, so that the handle, the round plate, and the rotating rod cannot rotate, preventing the LED light source, the uniform light lens, etc. from being separated from the circuit board due to accidental touch during assembly. Pull up the pull plate, the sliding column enters the limit groove 2, and the fixed rod can enter the socket normally, so that the round plate can rotate normally. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the partial explosion front view structure of the present invention;

[0023] Figure 4 It is a schematic diagram of a partial top view of the structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the connecting socket of the present invention;

[0025] Figure 6 It is a schematic diagram of a partial cross-sectional front view of the structure of the present invention;

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

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

[0028] Fig. 9 It is a partial back view structural schematic diagram of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the present invention in a partial cross-section and viewed from above.

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

[0031] like Figure 1-10As shown, the present invention provides a technical solution: a quantum dot light-emitting module, comprising a back plate 1, a circuit board 9 is installed 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 diffuser lens 5 is bonded to the top of the uniform light lens 3, a quantum dot film 4 is connected between the diffuser lens 5 and the uniform light lens 3, an outer frame 11 is installed on the surface of the back plate 1, an optical film 10 is installed on the inner side of the outer frame 11, a diffuser plate 13 is installed on the inner side of the outer frame 11, and the uniform light lens 3 and the circuit board are electrically connected. The surface of 9 is provided with a docking assembly 6 for easy installation, a linkage assembly 7 for easy disassembly and replacement, and a limit assembly 8 for preventing accidental touch from falling off. The docking assembly 6 includes: a fixing sleeve 60, the fixing sleeve 60 is fixed to the bottom of the uniform light lens 3, and a card hole 61 is opened on the surface of the fixing sleeve 60. The docking assembly 6 also includes a connecting seat 62, the connecting seat 62 is fixed to the surface of the circuit board 9, and a cavity 63 is opened inside the connecting seat 62. The inner wall of the cavity 63 is provided with a slide groove 64, and the slide groove 64 is provided with four groups, and the four groups of slide grooves 64 are all in the cavity The center of the circle 63 is the axis circle array, the inner wall of the slide groove 64 is slidably connected with a card plate 65 and a moving block 66, the surface of the card plate 65 is hinged with a connecting rod 67, the end of the connecting rod 67 away from the card plate 65 is hinged on the surface of the moving block 66, a spring 68 is fixed on the surface of the card plate 65, the end of the spring 68 away from the card plate 65 is fixed on the inner wall of the cavity 63, the end of the card plate 65 away from the spring 68 passes through the cavity 63, and the card plate 65 is slidably connected with the connecting seat 62, and the surface of the end of the card plate 65 away from the spring 68 is set to be inclined The surface of the card plate 65 and the moving block 66 are each provided with two groups, and the two groups of card plates 65 and moving blocks 66 are symmetrically arranged with the center line of the connecting seat 62 as the symmetry axis, the linkage component 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, and the surface of the fixed sleeve 60 contacts the inclined surface of the card plate 65. Through the spring 68, the moving block 66, and the linkage rod 67, the card plate 65 enters the card hole 61, so that the fixed sleeve 60 can be limited, the LED light source 2, the uniform light lens 3, etc. can be stabilized, and it is convenient for personnel to install.

[0032] The linkage assembly 7 includes a fixed seat 70, which is fixed to the surface of the connecting seat 62. A circular plate 71 is rotatably connected to the surface of the fixed seat 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 seat 70, the connecting seat 62, and the moving block 66, and the rotating rod 73 is rotatably connected to the fixed seat 70 and the connecting seat 62. A short rod 74 is fixed to the inner side of the moving block 66. An arc-shaped sliding groove 75 is provided on the surface of the rotating rod 73. 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 conflicts with the inner wall of the arc-shaped sliding groove 75. A stabilizing column 76 is fixed to 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 spring 2 78 is fixed on the surface of 9, and one end of the spring 2 78 away from the connecting block 79 is fixed on the inner wall of the connecting groove 77. A card slot 700 is opened on the surface of the circular plate 71, and the cross-section of the end of the connecting block 79 away from the spring 2 78 is triangular. When the LED light source 2 needs to be replaced, the handle 72 is turned, the circular plate 71 is rotated, and the connecting block 79 can intermittently enter the connecting groove 77 through the spring 2 78, without affecting the normal rotation of the circular plate 71. At the same time, when the circular plate 71 rotates, the rotating rod 73 is driven to rotate, and the rotating rod 73 drives the arc-shaped slide groove 75 to rotate synchronously. At this time, the inner wall of the arc-shaped slide groove 75 contacts the surface of the short rod 74, which can drive the moving block 66 to move away from the circular plate 71. At this time, the connecting rod 67 is flipped, and the card plate 65 is pulled out of the card hole 61. At this time, the LED light source 2, the uniform light lens 3, etc. can be taken out, and the LED light source 2 can be replaced.

[0033] The limiting assembly 8 includes a fixing ring 80, which is fixed on the surface of the fixing seat 70, a stabilizing column 76 passes through the fixing seat 70, a plug hole 82 is provided on the surface of the fixing seat 70, a fixing rod 81 is fixed on the surface of the connecting block 79, 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, a stabilizing groove 83 is provided on the inner side of the fixing ring 80, a sliding column 84 is slidably connected to the inner wall of the stabilizing groove 83, a spring three 85 is fixed on the surface of the sliding column 84, one 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 provided on the surface of the stabilizing column 76, and a limiting groove two 87 is provided on the surface of the stabilizing column 76, A top plate 88 is fixed to the surface of the fixed column 76, and a round rod 89 is fixed to the surface of the fixed ring 80. The end of the round rod 89 away from the fixed 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 to the end of the round rod 89 away from the fixed ring 80. The end of the sliding column 84 away from the spring three 85 is set in an arc shape. The pull plate 800 is pressed down to make the sliding column 84 enter the limiting groove one 86, so that the fixing ring 80 contacts the surface of the fixing seat 70. At this time, the inner side of the fixing ring 80 blocks the socket 82, so that the handle 72 cannot be rotated normally to drive the round plate 71 and the rotating rod 73 to rotate, which can avoid accidental touch during assembly, resulting in the LED light source 2, the uniform light lens 3, etc. being separated from the circuit board 9.

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

[0035] When installation is required, pull the pull plate 800, which drives the round rod 89 and the fixing ring 80 upward, and at the same time, the surface of the sliding column 84 contacts the inner wall of the limiting groove 1 86, so that the sliding column 84 enters the stabilizing groove 83, and at the same time, the spring 3 85 is compressed. When the top of the fixing ring 80 contacts the surface of the top plate 88, the position of the sliding column 84 is parallel to the limiting groove 2 87, and the spring 3 85 is released, so that the sliding column 84 enters the limiting groove 2 87, and the fixing ring 80 can be stabilized. At this time, the position of the insertion hole 82 is parallel to the position of the fixing rod 81, and the fixing sleeve 60 is inserted into the connecting seat 62. When the card plate 65 moves, the linkage rod 67 is flipped, which can drive the moving block 66 to move the rod synchronously. When the position of the card plate 65 is parallel to the position of the card hole 61, the spring 68 is released, driving the card plate 65 and the moving block 66 to reset. At this time, the card plate 65 enters the card hole 61, which can limit the position of the fixed sleeve 60, stabilize the LED light source 2, the uniform light lens 3, etc., and facilitate personnel to install. At the same time, when the moving block 66 moves, its The surface of the short rod 74 abuts against the arc-shaped sliding groove 75, so that the rotating rod 73 rotates, and the circular plate 71 is rotated synchronously. At this time, the inner wall of the slot 700 abuts against the surface of the connecting block 79. At this time, the connecting block 79 enters the connecting groove 77, and the spring 2 78 is compressed. When the position of the connecting block 79 is parallel to the slot 700, the spring 2 78 is released, and the connecting block 79 enters the slot 700 without affecting the normal rotation of the circular plate 71. At the same time, when the connecting block 79 moves, the fixing rod 81 moves synchronously. When the connecting block 79 enters the connecting groove 77, the fixing rod 81 passes through the insertion hole 8 2, it will not affect the normal movement of the connecting block 79. When the fixing sleeve 60 and the card plate 65 are limited, the pull plate 800 is pressed down, so that the sliding column 84 enters the limiting groove 86, so that the fixing ring 80 and the surface of the fixing seat 70 are in conflict. At this time, the inner side of the fixing ring 80 blocks the plug hole 82, so that the handle 72 cannot be turned normally to drive the circular plate 71 and the rotating rod 73 to rotate, which can avoid the LED light source 2, the uniform light lens 3, etc. from being separated from the circuit board 9 due to accidental touch during assembly. The optical film 10 may include a polarizing film, a filter, etc., and the display module 12 may use a liquid crystal panel, etc. When in use, the uniform light lens 3 disperses the light of the LED light source 2 into a uniform surface light source or annular light source, excites the quantum dot material to generate multi-band composite light (that is, excites and mixes into white light), and then disperses the uniform light through the diffuser lens 5 according to the optical requirements, which can reduce the use area of ​​the quantum dot material or the quantum dot film 4, reduce costs, and reduce the harm of chemical elements released to the human body. The LED light source 2 is located below the light homogenizing lens 3, which can emit its heat radiation, 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 homogenizing lens 3 can also homogenize the light of the LED light source 2, so that the light conversion efficiency of each position of the quantum dot material is basically the same, and ensure the uniform color of the emitted light.The divergent uniform light is diffused by the diffuser plate 13 and processed by the optical film 10 and the display module 12 to form light with high color saturation. When one of the groups of LED light sources 2 needs to be replaced, the pull plate 800 is pulled to make the sliding column 84 enter the second limit groove 87, and the fixing ring 80 no longer blocks the insertion hole 82. At this time, the handle 72 can be rotated normally, and the circular plate 71 is driven to rotate synchronously. The connecting block 79 and the fixing rod 81 can move normally in the connecting groove 77 and the insertion hole 82. At the same time, when the circular plate 71 rotates, the rotating rod 73 drives the arc-shaped slide groove 75 to rotate synchronously. At this time, the inner wall of the arc-shaped slide groove 75 contacts the surface of the short rod 74, which can drive the moving block 66 to move away from the circular plate 71. At this time, the connecting rod 67 flips over and pulls the card plate 65 out of the card hole 61. At this time, the LED light source 2, the uniform light lens 3, etc. can be taken out, and the LED light source 2 can be replaced.

[0036] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A quantum dot light-emitting module, comprising a back plate (1), characterized in that: A circuit board (9) is mounted on the surface of the back plate (1), the surface of the circuit board (9) is electrically connected to an LED light source (2), a light homogenizing lens (3) is bonded to the top of the LED light source (2), a light diffusing lens (5) is bonded to the top of the light homogenizing lens (3), a quantum dot film (4) is connected between the light diffusing lens (5) and the light homogenizing 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 diffusion plate (13) is mounted on the inner side of the outer frame (11), and a docking assembly (6) for easy installation, a linkage assembly (7) for easy disassembly and replacement, and a limit assembly (8) for preventing accidental touch from causing falling off are arranged on the surfaces of the light homogenizing lens (3) and the circuit board (9), the docking assembly (6) comprising: a fixing sleeve (60), the fixing sleeve (60) being fixed to the bottom of the light homogenizing lens (3), and a clamping hole (61) being provided on the surface of the fixing sleeve (60).

2. A quantum dot light-emitting module according to claim 1, characterized in that: The docking assembly (6) further comprises a connection seat (62), wherein the connection seat (62) is fixed on the surface of the circuit board (9), wherein a cavity (63) is provided inside the connection seat (62), wherein the inner wall of the cavity (63) is provided with a slide groove (64), wherein four groups of the slide grooves (64) are arranged, and the four groups of slide grooves (64) are arranged in a circular array with the center of the cavity (63) as the axis center, wherein the inner wall of the slide groove (64) is slidably connected with a card plate (65) and a moving block (66), wherein A connecting rod (67) is hinged on the surface of the card plate (65), and one end of the connecting rod (67) away from the card plate (65) is hinged on the surface of the moving block (66). A spring (68) is fixed on the surface of the card plate (65), and one end of the spring (68) away from the card plate (65) is fixed on the inner wall of the cavity (63). One end of the card plate (65) away from the spring (68) passes through the cavity (63), and the card plate (65) is slidably connected to the connecting seat (62).

3. A quantum dot light-emitting module according to claim 2, characterized in that: The linkage assembly (7) comprises a fixed seat (70), wherein the fixed seat (70) is fixed to the surface of the connecting seat (62), a circular plate (71) is rotatably connected to the surface of the fixed seat (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), an end of the rotating rod (73) away from the circular plate (71) passes through the fixed seat (70), the connecting seat (62), and the moving block (66), and the rotating rod (73) is rotatably connected to the fixed seat (70) and the connecting seat (62), a short rod (74) is fixed to the inner side of the moving block (66), and the surface of the rotating rod (73) An arc-shaped slide groove (75) is provided, and one end of the short rod (74) away from the moving block (66) extends into the arc-shaped slide groove (75), and the surface of the short rod (74) contacts the inner wall of the arc-shaped slide groove (75). A stabilizing column (76) is fixed to the surface of the fixing seat (70), and 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 to the surface of the connecting block (79), and one end of the second spring (78) away from the connecting block (79) is fixed to the inner wall of the connecting groove (77). A clamping groove (700) is provided on the surface of the circular plate (71).

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

5. A quantum dot light-emitting module according to claim 2, characterized in that: An end surface of the clamping plate (65) away from the spring 1 (68) is arranged as an inclined surface.

6. A quantum dot light-emitting module according to claim 3, characterized in that: The cross section of one end of the connecting block (79) away from the second spring (78) is triangular.

7. A quantum dot light-emitting module according to claim 4, characterized in that: One end of the sliding column (84) away from the spring three (85) is arranged in an arc shape.

8. A quantum dot light-emitting module according to claim 3, characterized in that: The clamping plates (65) and the moving blocks (66) are provided in two groups, and the two groups of clamping plates (65) and the moving blocks (66) are symmetrically arranged with the center line of the connecting seat (62) as the symmetry axis, and the linkage component (7) is arranged on the surface of one of the two groups of moving blocks (66).

9. An LED display screen, characterized in that: A display screen body comprising a display module (12) and the quantum dot light-emitting module according to any one of claims 1 to 8.

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