Ambient light adaptive liquid crystal display module

Abstract

The application discloses an ambient light self-adaptive liquid crystal display module, which comprises a shell and a panel, and further comprises a sliding rheostat arranged in the shell and used for controlling backlight brightness, a photosensitive resistor arranged on the panel and used for receiving external ambient light, and a comparison controller arranged in the shell and used for controlling the sliding rheostat, which is electrically connected with the sliding rheostat through a first sensor and electrically connected with the photosensitive resistor through a second sensor. The photosensitive resistor, the comparison controller and the two sensors are arranged, the effective resistances of the sliding rheostat and the photosensitive resistor are collected by the sensors in real time, and are converted into electric signals and sent into the comparison controller for comparison. When the difference between the two electric signals is positive, the resistance of the sliding rheostat is controlled to increase the backlight brightness; when the difference between the two electric signals is negative, the resistance of the sliding rheostat is controlled to reduce the backlight brightness, so that the self-adaptive adjustment of the backlight brightness to the ambient light is realized.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display technology, and more specifically to an ambient light adaptive liquid crystal display module. Background Technology

[0002] A liquid crystal display (LCD) is an active-matrix liquid crystal display driven by thin-film transistors. It primarily uses electric current to stimulate liquid crystal molecules to create dots, lines, and surfaces, which, in conjunction with a backlight, form the image. Its working principle is that under the influence of an electric field, the alignment of the liquid crystal molecules changes, altering the transmittance of the external light source and completing an electro-optical conversion. Then, by utilizing different excitations of the R, G, and B primary color signals and passing through red, green, and blue primary color filters, color reproduction in both the temporal and spatial domains is achieved. Existing LCD modules generally meet daily usage needs, but some shortcomings still require improvement.

[0003] Patent document CN208044243U discloses an outdoor LCD display screen, comprising: a housing, the housing including a base plate and a ring-shaped side plate connected to the edge of the base plate, the side plate being stepped, forming a lower step and an upper step; an LCD screen and a touch screen, the LCD screen being disposed within the housing, its upper surface being flush with the lower step, the touch screen being located on the LCD screen, its edge being disposed on the lower step; a pressure plate for pressing and fixing the LCD screen, the pressure plate being ring-shaped, which is fixed vertically to the lower step and presses down tightly against the edge of the touch screen, a waterproof sponge layer being disposed between the pressure plate and the touch screen, the upper surface of the pressure plate being flush with the upper step. Its beneficial effect is that the waterproof sponge layer between the pressure plate and the touch screen can prevent rainwater or snowmelt from flowing into the space between the LCD screen and the touch screen, extending the life of the display screen and thus reducing costs.

[0004] When used outdoors, LCD screens are easily affected by ambient light. If the initial brightness is lowered, the display will be unclear when the light intensity is high. If the initial brightness is increased, the display will be clear. However, as the light intensity decreases with weather changes, the power consumption of the display remains unchanged, resulting in poor energy efficiency. Therefore, there is an urgent need for an ambient light adaptive LCD display module to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an ambient light adaptive liquid crystal display module to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An ambient light adaptive liquid crystal display module includes a housing and a panel disposed on the front of the housing, and further includes: a sliding rheostat disposed inside the housing for controlling backlight brightness; a photoresistor disposed on the panel for receiving ambient light; and a comparator controller disposed inside the housing for controlling the sliding rheostat. The comparator controller is electrically connected to the sliding rheostat via a first sensor and to the photoresistor via a second sensor. The two sensors are used to convert the real-time resistance of the sliding rheostat and the photoresistor into electrical signals, which are then sent to the comparator controller for comparison. When the difference between the two electrical signals is positive, the sliding rheostat is controlled to change its resistance to reduce the backlight brightness; conversely, when the difference is negative, the backlight brightness is increased.

[0008] Preferably, the sliding rheostat includes a track resistor fixedly disposed inside the housing, a sliding variable resistor slidably connected on the track resistor, and the track resistor and the sliding variable resistor are connected to the backlight circuit.

[0009] Preferably, a servo motor is installed inside the housing, and a screw is provided at the output end of the servo motor. The screw is threaded through and connected to a variable resistor. The servo motor receives and switches the rotation direction according to the positive and negative values ​​of the electrical signal difference collected by the comparison controller.

[0010] Preferably, a heat dissipation window is provided on the back side of the housing, and a cover plate is rotatably provided on the outside of the heat dissipation window. A linkage component is provided inside the housing to link the slider with the cover plate. When the slider moves to the vicinity of the maximum value of the corresponding backlight brightness, the linkage component links the cover plate to rotate to open the heat dissipation window.

[0011] Preferably, the linkage component includes a linkage shaft rotatably disposed within the housing, the linkage shaft being connected to the rotating shaft of the cover plate via a bevel gear transmission, the upper end of the linkage shaft being connected to a trigger via a gear and rack transmission, the trigger being slidably disposed within the housing, and the trigger being provided with a branch extending into the range of motion of the slip converter.

[0012] Preferably, a dustproof baffle is provided inside the heat dissipation window.

[0013] Preferably, the rotating shaft of the baffle is connected to the heat dissipation window via a torsion spring.

[0014] Preferably, the housing is provided with a delayed limiting component for limiting the movement of the trigger. When the slider moves to the maximum value of the corresponding backlight brightness, the trigger is pushed to the limit position by the slider and triggers the delayed limiting component to limit the trigger. When the slider moves to half of the maximum value of the corresponding backlight brightness, the delayed limiting component cancels the limit.

[0015] Preferably, the delay limiting component includes a sliding rod movably disposed within the housing and a locking block that is raised and lowered. The sliding rod and the locking block are movably connected and rise and fall synchronously. One end of the sliding rod is provided with a first push rod extending into the range of motion of the trigger, and the other end is provided with a second push rod extending towards the upper end of the slider.

[0016] Preferably, the housing is provided with an inclined sliding groove, and the sliding rod is provided with a slider that is slidably connected to the inclined sliding groove.

[0017] In the above technical solution, the beneficial effects of the present invention are:

[0018] This ambient light adaptive LCD module uses a photoresistor, a comparator controller, and two sensors. The sensors collect the effective resistance of the sliding rheostat and the photoresistor in real time and convert them into electrical signals, which are then sent to the comparator controller for comparison. When the difference between the two electrical signals is positive, the sliding rheostat is controlled to increase the backlight brightness; when the difference is negative, the sliding rheostat is controlled to decrease the backlight brightness. This achieves adaptive adjustment of the backlight brightness according to the ambient light, ensuring clear display and improving energy efficiency.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0020] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a frontal cross-sectional view of the present invention.

[0024] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A;

[0025] Figure 4 This is a side cross-sectional view of the present invention.

[0026] Figure 5 This is a top view cross-sectional structural diagram of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the housing of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B;

[0029] Figure 8 This is a schematic diagram of the cooperation structure between the sliding rod and the locking block of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Housing; 2. Panel; 3. Photoresistor; 4. Comparator controller; 5. First sensor; 6. Second sensor; 7. Track resistor; 8. Sliding transformer; 9. Servo motor; 10. Screw; 11. Heat dissipation window; 12. Sheath; 13. Linkage shaft; 14. Trigger; 15. Branch; 16. Sliding rod; 17. Locking block; 18. First push rod; 19. Second push rod; 20. Angled slide; 21. Slider. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0033] Please see Figure 1-8 An ambient light adaptive liquid crystal display module provided in this embodiment of the invention includes a housing 1 and a panel 2 disposed on the front of the housing 1. It also includes: a sliding rheostat disposed within the housing 1 for controlling backlight brightness; a photoresistor 3 disposed on the panel 2 for receiving ambient light; and a comparator controller 4 disposed within the housing 1 for controlling the sliding rheostat. The comparator controller 4 is electrically connected to the sliding rheostat via a first sensor 5 and to the photoresistor 3 via a second sensor 6. The two sensors convert the real-time resistance of the sliding rheostat and the photoresistor 3 into electrical signals, which are then sent to the comparator controller 4 for comparison. When the difference between the two electrical signals is positive, the sliding rheostat is controlled to change resistance to reduce backlight brightness; conversely, when the difference is negative, the backlight brightness is increased.

[0034] Specifically, the housing 1 is preferably made of metal for heat conduction and dissipation; the panel 2 includes a backlight layer; a sliding rheostat controls the operating voltage of the backlight circuit by adjusting its resistance. When the resistance of the sliding rheostat decreases, the backlight voltage increases and the backlight brightness increases; when the resistance of the sliding rheostat increases, the backlight voltage decreases and the backlight brightness decreases; the photoresistor 3 receives ambient light to adjust its resistance accordingly. When the light is strong, the resistance decreases; when the light is weak, the resistance increases; the first sensor 5 converts the electrical signal generated by the real-time resistance of the sliding rheostat, and the second sensor 6 converts the electrical signal generated by the real-time resistance of the photoresistor 3. The two sensors are compensated by the circuit to form the same specifications and the same range. When the resistance decreases, the corresponding electrical signal value increases, and when the resistance increases, the corresponding electrical signal value decreases. The difference between the two electrical signals is the electrical signal value collected by the first sensor 5 minus the electrical signal value collected by the second sensor 6. The comparator controller 4 controls the sliding rheostat to change the resistance value connected to the backlight circuit, thereby adjusting the backlight brightness. When the difference between the two electrical signals is positive, the comparator controller 4 controls the sliding rheostat to increase the resistance value, and vice versa. When the difference between the two electrical signals is negative, the comparator controller 4 controls the sliding rheostat to decrease the resistance value. In practical use, this technical solution achieves the following: when the light intensity increases, the resistance of the photoresistor 3 decreases, and the corresponding electrical signal collected by the second sensor 6 increases. This results in a negative difference between the photoresistor 3 and the corresponding electrical signal collected by the first sensor 5 from the sliding rheostat. The comparator controller 4 then controls the sliding rheostat to decrease its resistance, thereby increasing the backlight brightness. Conversely, when the light intensity decreases, the resistance of the photoresistor 3 increases, and the corresponding electrical signal collected by the second sensor 6 decreases. This results in a positive difference between the photoresistor 3 and the corresponding electrical signal collected by the first sensor 5 from the sliding rheostat. The comparator controller 4 then controls the sliding rheostat to increase its resistance, thereby decreasing the backlight brightness. This adaptive adjustment of the backlight brightness to the ambient light not only ensures clear display but also improves energy efficiency.

[0035] Compared with the prior art, the ambient light adaptive liquid crystal display module proposed in this embodiment of the invention sets up a photoresistor 3, a comparator controller 4 and two sensors. The sensors collect the effective resistance of the sliding rheostat and the photoresistor 3 in real time and convert them into electrical signals, which are then sent to the comparator controller 4 for comparison. When the difference between the two electrical signals is positive, the sliding rheostat is controlled to change its resistance to increase the backlight brightness. When the difference between the two electrical signals is negative, the sliding rheostat is controlled to change its resistance to decrease the backlight brightness. This achieves adaptive adjustment of the backlight brightness according to the ambient light, which not only ensures clear display but also improves energy efficiency.

[0036] As a preferred technical solution of this embodiment, the sliding rheostat includes a track resistor 7 fixedly disposed inside the housing 1, and a sliding variable resistor 8 slidably connected to the track resistor 7. The track resistor 7 and the sliding variable resistor 8 are connected to the backlight circuit. Specifically, the track resistor 7 is in a straight line shape. One end of the backlight circuit is electrically connected to one end of the track resistor 7, and the other end of the backlight circuit is electrically connected to the sliding variable resistor 8. When the sliding variable resistor 8 slides closer to the end of the track resistor 7 connected to the backlight circuit, the resistance decreases, and vice versa.

[0037] As a preferred embodiment, a servo motor 9 is installed inside the housing 1. A screw 10 is provided at the output end of the servo motor 9, and the screw 10 is threadedly connected to the slider 8. The servo motor 9 receives and switches its rotation direction according to the positive or negative value of the electrical signal difference collected by the comparator controller 4. Specifically, the servo motor 9 is located at the end furthest from the track resistor 7 connected to the backlight circuit. Therefore, when the slider 8 is close to the servo motor 9, the effective resistance on the track resistor 7 increases, and when the slider 8 is far from the servo motor 9, the effective resistance on the track resistor 7 decreases. The axial direction of the screw 10 is perpendicular to the track resistor... The extension directions of 7 are parallel; the rotation direction of servo motor 9 is switched. When the electrical signal difference is positive, the output end of servo motor 9 rotates in the forward direction, corresponding to the threaded feed transmission between screw 10 and slip converter 8, which drives slip converter 8 to move in the direction of increasing the effective resistance of track resistance 7, that is, slip converter 8 moves closer to servo motor 9. When the electrical signal difference is negative, the output end of servo motor 9 rotates in the reverse direction, corresponding to the threaded feed transmission between screw 10 and slip converter 8, which drives slip converter 8 to move in the direction of decreasing the effective resistance of track resistance 7, that is, slip converter 8 moves away from servo motor 9.

[0038] In another embodiment of the present invention, a heat dissipation window 11 is provided on the back side of the housing 1, and a cover plate 12 is rotatably provided on the outside of the heat dissipation window 11. A linkage component is provided inside the housing 1 to link the slider 8 and the cover plate 12. When the slider 8 moves to a range near the maximum value of the corresponding backlight brightness, the linkage component links the cover plate 12 to rotate to open the heat dissipation window 11. Specifically, a dustproof baffle is provided inside the heat dissipation window 11. The rotation shaft of the cover plate 12 is connected to the heat dissipation window 11 through a torsion spring, thereby automatically maintaining the position of the cover plate 12 blocking the heat dissipation window 11 and the rotation tendency of the cover plate 12 to restore the blocking of the heat dissipation window 11. In actual scenarios, when the external light intensity is strong, the backlight brightness is adjusted to the maximum value. Under these conditions, the heat generated by the display module increases significantly. To address this, a heat dissipation window 11 is provided to improve heat dissipation of the housing 1, and a cover 12 is provided to control the opening and closing of the heat dissipation window 11. A linkage component is also provided to match the opening and closing state of the cover 12 to the intensity of the ambient light. When the ambient light intensity is strong, causing the backlight brightness to be adjusted to the maximum value or near the maximum range, the cover 12 is linked to rotate and open the heat dissipation window 11, corresponding to sunny and hot weather. When the ambient light intensity is weak, causing the backlight brightness to be adjusted to a lower range, the cover 12 is linked to rotate and close the heat dissipation window 11, corresponding to cloudy and rainy weather, ensuring dust and water resistance.

[0039] As a preferred technical solution in this embodiment, the linkage component includes a linkage shaft 13 rotatably disposed within the housing 1. The linkage shaft 13 is connected to the rotating shaft of the cover plate 12 via a bevel gear transmission. The upper end of the linkage shaft 13 is connected to a trigger 14 via a gear and rack transmission. The trigger 14 is slidably disposed within the housing 1 and has a branch 15 extending into the range of motion of the slip converter 8. Specifically, the linkage shaft 13 is vertically disposed, and the lower end of the linkage shaft 13 is coaxially connected to a first bevel gear. One end of the rotating shaft of the cover plate 12 is coaxially connected to a second bevel gear meshing with the first bevel gear, thereby realizing transmission. Preferably, there are multiple cover plates 12, arranged vertically, and synchronously linked through multiple sets of bevel gears on the linkage shaft 13. The upper end of the linkage shaft 13 is coaxially connected to a gear, and the gear meshes with a rack. The branch is set on the trigger 14; the trigger 14 moves along the axial direction of the screw 10; the branch 15 is set on the side of the slip converter 8 away from the servo motor 9, that is, when the slip converter 8 moves away from the servo motor 9 to reduce the effective resistance of the track resistance 7, when the effective resistance of the track resistance 7 is reduced to near the minimum value, the branch 15 is pushed by the slip converter 8 and moves, thereby driving the trigger 14, and opening the heat dissipation window 11 by rotating the cover plate 12 through the linkage shaft 13; while when the slip converter 8 moves closer to the servo motor 9, since the cover plate 12 has an elastic rotation function, it can move back in the opposite direction by rotating the trigger 14 through the linkage shaft 13; the branch 15 is preferably ring-shaped and movably sleeved on the screw 10, so that the branch 15 is stably pushed by the slip converter 8.

[0040] As a further preferred technical solution of this embodiment, a delayed limiting component is provided inside the housing 1 for limiting the movement of the trigger member 14. When the slider 8 moves to the maximum value of the corresponding backlight brightness, the trigger member 14 is pushed to the limit position by the slider 8 and triggers the delayed limiting component to limit the trigger member 14. When the slider 8 moves to half of the maximum value of the corresponding backlight brightness, the delayed limiting component cancels the limit. Specifically, in actual use, in an environment where the light intensity changes frequently but the external high temperature is continuous, the above synchronously linked opening and closing of the shield 12 will not allow the heat dissipation window 11 to fully exert its heat dissipation function if it is repeatedly opened and closed. The delayed limiting component is proposed to solve this problem. The delay limiting component limits the trigger 14, thus limiting the opening angle of the cover 12. The delay limiting component is triggered when the slider 8 moves to the maximum value of the corresponding backlight brightness, which corresponds to the state with the most backlight heat generation, and the cover 12 is limited to the open position. Then, under the repeated changes in the intensity of the external light, the slider 8 moves within the range between the maximum value of the corresponding backlight brightness and half of the maximum value. During this process, the cover 12 keeps the heat dissipation window 11 open, which satisfies the heat dissipation in the high temperature environment. The delay limiting component releases the limit on the trigger 14 when the slider 8 moves to half of the maximum value of the corresponding backlight brightness, and the cover 12 can then elastically rotate back to close the heat dissipation window 11.

[0041] As a further preferred technical solution of this embodiment, the delay limiting component includes a sliding rod 16 movably disposed within the housing 1 and a locking block 17 that is raised and lowered. The sliding rod 16 and the locking block 17 are movably connected and rise and fall synchronously. One end of the sliding rod 16 is provided with a first push rod 18 extending into the range of motion of the trigger 14, and the other end is provided with a second push rod 19 extending towards the upper end of the transducer 8. Specifically, the housing 1 is provided with an inclined slide groove 20, and the sliding rod 16 is provided with a slider 21 that is slidably connected to the inclined slide groove 20. The slider 21 moves with damping within the inclined slide groove 20, that is, it automatically remains relatively stationary without external force. The upper end of the inclined slide groove 20 is located closer to the transducer 8. Under the guidance of the slider 21 by the inclined slide groove 20, the sliding rod 16 is tilted and moved. The sliding rod 16 is located on the upper side of the trigger 14. The locking block 17 is provided with a push rod extending from the sliding rod 16. The sliding grooves are parallel to each other, and the sliding rod 16 is fixedly provided with a sliding pin that is slidably connected to the sliding groove. This ensures that the tilting movement of the sliding rod 16 only drives the lifting and lowering movement of the locking block 17. When the trigger 14 is not pushed by the slider 8, the locking block 17 is located on the upper side of the trigger 14 near the slider 8. When the trigger 14 is pushed to the limit position by the slider 8, the end of the trigger 14 near the slider 8 is misaligned with the locking block 17, and the locking block 17 can descend to block the return trajectory of the trigger 14. The first push rod 18 is located at the end of the sliding rod 16 away from the slider 8 and extends downward into the range of motion of the trigger 14. When the sliding rod 16 is at its highest position, the second push rod 19 is just above the range of motion of the slider 8. When the sliding rod 16 is not at its highest position, the second push rod 19 extends into the range of motion of the slider 8. In practical use, when the inverter 8 moves to a position near the maximum backlight brightness, the sliding rod 16 is at its highest position. The inverter 8 then smoothly pushes the trigger 14, causing the shield 12 to rotate and open the heat dissipation window 11. Next, when the inverter 8 moves to the maximum backlight brightness, the trigger 14 and the locking block 17 are misaligned, pushing the first push rod 18. The first push rod 18 moves the sliding rod 16, causing it to tilt downwards. This, in turn, causes the locking block 17 to move downwards, blocking the circuit of the trigger 14. This limits the automatic return movement of the trigger 14. The shield 12 is restricted to remain open. Then, during the movement of the slider 8 within the range between the maximum value and half of the corresponding backlight brightness, the trigger 14 remains stationary due to the restriction. Only when the slider 8 moves to half of the corresponding maximum backlight brightness can the slider 8 push the sliding rod 16 to move in the opposite direction through the second push rod 19, that is, tilt and move upward. Then the locking block 17 rises in conjunction to release the restriction on the trigger 14, and the shield 12 can then rotate elastically to close the heat dissipation window 11. In addition, the second push rod 19 automatically disengages from the slider 8 as the sliding rod 16 tilts and rises.

[0042] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An ambient light adaptive liquid crystal display module, comprising a housing (1) and a panel (2) disposed on the front side of the housing (1), characterized in that, Also includes: A sliding rheostat, which is set inside the housing (1), is used to control the backlight brightness; A photoresistor (3) is mounted on the panel (2) to receive ambient light. The comparator controller (4) is located inside the housing (1) and is used to control the sliding rheostat. It is electrically connected to the sliding rheostat through the first sensor (5) and electrically connected to the photoresistor (3) through the second sensor (6). The two sensors are used to convert the real-time resistance of the sliding rheostat and the photoresistor (3) into electrical signals and send them to the comparator controller (4) for comparison. When the difference between the two electrical signals is positive, the sliding rheostat is controlled to change resistance to reduce the backlight brightness, and vice versa to increase the backlight brightness. The sliding rheostat includes a track resistor (7) fixedly installed inside the housing (1), a sliding transformer (8) slidably connected on the track resistor (7), and the track resistor (7) and the sliding transformer (8) connected to the backlight circuit. The housing (1) has a heat dissipation window (11) on the back side, and a cover plate (12) is rotatably provided on the outside of the heat dissipation window (11). The housing (1) has a linkage component that links the slider (8) and the cover plate (12). When the slider (8) moves to the vicinity of the maximum value of the corresponding backlight brightness, the linkage component links the cover plate (12) to rotate to open the heat dissipation window (11). The rotating shaft of the cover plate (12) is connected to the heat dissipation window (11) through a torsion spring, thereby automatically keeping the heat dissipation window (11) blocked. The linkage assembly includes a linkage shaft (13) rotatably disposed inside the housing (1). The linkage shaft (13) is connected to the rotating shaft of the cover plate (12) via a bevel gear transmission. The upper end of the linkage shaft (13) is connected to a trigger (14) via a gear and rack transmission. The trigger (14) is slidably disposed inside the housing (1). The trigger (14) is provided with a branch (15) extending into the range of motion of the slip converter (8). The housing (1) is provided with a delayed limiting component for moving the limiting trigger (14). When the slider (8) moves to the maximum value of the corresponding backlight brightness, the trigger (14) is pushed to the limit position by the slider (8) and the delayed limiting component is triggered to limit the trigger (14). When the slider (8) moves to half of the maximum value of the corresponding backlight brightness, the delayed limiting component cancels the limit. During the movement of the slider (8) within the range between the maximum value and half of the maximum value of the corresponding backlight brightness, the cover (12) remains open. The delay limiting component includes a sliding rod (16) movably disposed within the housing (1) and a locking block (17) that is raised and lowered. The sliding rod (16) and the locking block (17) are movably connected and raised and lowered synchronously. One end of the sliding rod (16) is provided with a first push rod (18) extending into the range of motion of the trigger (14), and the other end is provided with a second push rod (19) extending toward the upper end of the slider (8). The housing (1) is provided with an inclined slide groove (20), and the sliding rod (16) is provided with a slider (21) that is slidably connected to the inclined slide groove (20).

2. The ambient light adaptive liquid crystal display module according to claim 1, characterized in that, A servo motor (9) is installed inside the housing (1). A screw (10) is provided at the output end of the servo motor (9). The screw (10) is threaded through and connected to the slip converter (8). The servo motor (9) receives and switches the rotation direction according to the positive and negative correspondence of the electrical signal difference collected by the comparison controller (4).

3. The ambient light adaptive liquid crystal display module according to claim 1, characterized in that, A dustproof baffle is provided inside the heat dissipation window (11).

4. The ambient light adaptive liquid crystal display module according to claim 1, characterized in that, The pivot of the shield (12) is connected to the heat dissipation window (11) via a torsion spring.

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