Function testing device for liquid crystal display screen production

Abstract

The invention belongs to the technical field of liquid crystal display screen testing, and particularly relates to a function testing device for liquid crystal display screen production, which comprises a sealing box body and an LED display screen body arranged in the sealing box body, a mounting frame is arranged in the sealing box body, the LED display screen body is assembled on the mounting frame, an adjusting frame is arranged in the sealing box body through a fixing frame, and the LED display screen body is assembled on the adjusting frame. The LED display screen comprises an LED display screen body, an adjusting frame is installed on the LED display screen body and located on one side of the LED display screen body, a detection assembly is installed on the adjusting frame and used for detecting the LED display screen body, an adjusting assembly is installed on the adjusting frame and used for adjusting the position of the detection assembly, and the adjusting assembly comprises a first driving structure and a second driving structure. The method can adapt to the curvature characteristics of the edge of the LED curved screen, accurately obtains the Flicker detection data of the edge area, avoids the missing of the potential flicker problem of the edge, guarantees the detection effectiveness of the whole area of the curved screen, introduces the similar ambient light to carry out detection, and restores the light environment of a real use scene.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of liquid crystal display screen testing, and particularly relates to a functional testing device for liquid crystal display screen production. BACKGROUND

[0002] In the field of modern display technology, liquid crystal display screens, especially TFT-LCDs (Thin Film Transistor Liquid Crystal Displays), are widely used in various electronic devices due to their many advantages. TFT-LCDs can precisely control the strength of the electric field in the liquid crystal cell by skillfully utilizing voltage changes, thereby changing the arrangement direction of liquid crystal molecules, and ultimately achieving effective control over light transmission or non-transmission, presenting clear images to users.

[0003] However, the liquid crystal display may exhibit the "Flicker" phenomenon when displaying actual images, i.e., the image may appear "flickering, bright and dark alternately". This phenomenon seriously affects the user's visual experience. For example, after long-term viewing of a display screen with the Flicker phenomenon, the user is prone to visual fatigue, eye discomfort, and even damage to vision. From a technical perspective, the causes of the Flicker phenomenon are complex and varied. On the one hand, if the screen refresh rate cannot be well matched with the content frame rate, flickering may occur when the image is switched. On the other hand, the imbalance of the symmetry of the inversion voltage causes the response of the liquid crystal molecules to be inconsistent between different frames, which also causes unstable fluctuations in brightness. In addition, if the digital circuit supply voltage Vdd of the display panel under test is unstable, or the PWM (Pulse Width Modulation) frequency is set unreasonably, it may also become a cause of the Flicker phenomenon. The flicker frequencies corresponding to different causes are different. For example, the flicker frequency caused by the screen refresh rate problem is often closely related to the refresh rate value, while the flicker caused by the PWM frequency is directly related to the modulation frequency.

[0004] With the rapid development of technology and the continuous upgrading of consumer demand, curved screens, especially LED curved screens, have an increasing market share due to their unique visual effects and immersive experience. However, the physical structure and optical properties of curved screens are significantly different from traditional flat screens, bringing new challenges to their functional testing. For example, the curved part of the curved screen makes light reflection more complex, with an average increase of 5%-10% in reflectivity compared to flat screens. In high ambient light conditions, this can result in a 115%-30% higher reflectivity than flat screens. In a typical office environment, the difference in ambient light between the center and edge regions of the curved screen can be up to 40%-60%, which poses higher requirements for ambient light detection accuracy. When performing Flicker testing, traditional testing devices and methods are difficult to fully and accurately detect the edge position of the LED curved screen. Due to the curvature change of the edge of the curved screen, the conventional test probe is difficult to adapt to the edge of the screen, resulting in detection data deviation or ineffective acquisition. Moreover, most existing test devices often only focus on the center region of the screen, ignoring the particularity of the edge position, making it easy to miss potential Flicker problems at the edge of the curved screen. In actual use, the user's line of sight often sweeps across various regions of the screen, including the edge part. If there is Flicker at the edge, it will also seriously affect the overall visual experience.

[0005] In addition, ambient light is crucial to Flicker testing but often overlooked. The ultimate goal of Flicker testing is to ensure that users do not perceive screen flicker in actual use scenarios. However, the perception of screen flicker by the human eye is not isolated, and ambient light plays a key role. In bright outdoor environments, strong natural light can mask the weak flicker of the screen, making it difficult for users to perceive. In dim indoor environments, the flicker of the screen can be highlighted and become more noticeable. Ambient light also changes the contrast between screen brightness and the surrounding environment. If Flicker testing is only performed in a completely dark room, the results will inevitably be inconsistent with real use scenarios. Because the ambient light conditions around the user are complex and variable in actual use, the difference between this testing and actual application scenarios makes it impossible to accurately determine whether the product is qualified in actual use based on dark room test results. Research shows that factors such as the frequency, maximum light intensity, and duty cycle of ambient light significantly affect the degree of display flicker. Whether the ambient light frequency matches the display refresh rate is the key to eliminating the impact of ambient light on flicker.

[0006] Therefore, it is necessary to propose a functional test device for LCD production to test the "Flicker" phenomenon. SUMMARY

[0007] The present application aims to provide a functional test device for liquid crystal display screen production, which can adapt to the curvature characteristics of the edge of the LED curved screen, accurately obtain the Flicker detection data of the edge area, avoid missing the potential flicker problem of the edge, ensure the effectiveness of the detection of the whole area of the curved screen, introduce the detection of the environment light, restore the light environment of the real use scene, and solve the problem of disconnection between darkroom test and actual scene.

[0008] The technical solutions adopted by the present application are as follows:

[0009] A functional test device for liquid crystal display screen production, comprising a sealed box body and an LED display screen body arranged inside the sealed box body, a mounting rack is installed in the sealed box body, the LED display screen body is assembled on the mounting rack, an adjusting rack is installed in the sealed box body through a fixing rack, and the adjusting rack is located on one side of the LED display screen body, a detection assembly is installed on the adjusting rack, the detection assembly is used for detecting the LED display screen body, an adjusting assembly is installed on the adjusting rack, and the adjusting assembly is used for adjusting the position of the detection assembly.

[0010] The adjusting assembly comprises a first driving structure and a second driving structure;

[0011] The first driving structure comprises two first threaded rods transversely rotatably connected to the inner side of the adjusting rack, and a first transmission wheel is fixed to the same end of the two first threaded rods, the two first transmission wheels are transmissionally connected through a first transmission belt, a first motor is installed on the outer side of the adjusting rack, the output end of the first motor penetrates through the adjusting rack and is connected with one of the first threaded rods, and a first sliding bar is threadedly connected between the two first threaded rods;

[0012] The second driving structure comprises two second threaded rods vertically rotatably connected to the inner side of the adjusting rack, a second transmission wheel is fixed to the same end of the two second threaded rods, the two second transmission wheels are transmissionally connected through a second transmission belt, a second motor is installed on the outer side of the adjusting rack, the output end of the second motor penetrates through the adjusting rack and is connected with one of the second threaded rods, and a second sliding bar is threadedly connected between the two second threaded rods;

[0013] The detection assembly is slidably connected with the first sliding bar and the second sliding bar.

[0014] The detection assembly comprises a connecting block, and the detection assembly is slidably connected with the first sliding bar and the second sliding bar through the connecting block; a swing column is arranged at one end of the connecting block close to the LED display screen body, a movable reset structure is arranged between the connecting block and the swing column, a detector is arranged at one end of the swing column close to the LED display screen body, and the inner side of the adjusting frame is provided with a plurality of abutting structures.

[0015] The movable reset structure comprises a conical spring arranged between the connecting block and the swing column, the diameter of one end of the conical spring close to the connecting block is larger than that of the other end, a fixed rod is fixed to one end of the connecting block close to the swing column, a fixed ball is fixed to one end of the fixed rod close to the swing column, the fixed ball is movably connected with the swing column, a plurality of first guide magnets are uniformly arranged on the outer side of the fixed ball, a plurality of first iron sheets are arranged in the swing column, the number of the first guide magnets is the same as that of the first iron sheets and the positions of the first guide magnets correspond to those of the first iron sheets, and the first guide magnets and the first iron sheets are arranged in magnetic attraction.

[0016] The abutting structure comprises a plurality of abutting strips arranged in the inner side of the adjusting frame, and when the swing column moves to the edge position of the adjusting frame, the abutting strips abut against the swing column.

[0017] A plurality of sliding grooves are arranged in the adjusting frame, and a plurality of the abutting strips are slidably connected in the sliding grooves, a plurality of mounting pipes are fixed to the outer side of the adjusting frame, a moving strip is slidably connected in each mounting pipe, the moving strip is fixedly connected with the abutting strip, a moving plate is fixed to the top of the moving strip, and a third threaded rod is fixed to the top of the moving plate.

[0018] A driving structure is arranged on the adjusting frame, and the driving structure is used for driving the plurality of third threaded rods to move up and down.

[0019] The driving structure comprises a third motor arranged on the side of the adjusting frame away from the LED display screen body, a driving bevel gear is fixed to the output end of the third motor, a plurality of driven bevel gears are meshingly connected to the outer side of the driving bevel gear, a rotating rod is fixed to one end of each driven bevel gear away from the driving bevel gear, the rotating rod is rotatably connected with the adjusting frame through a mounting block, a third transmission wheel is fixed to the top of the rotating rod, a screw sleeve is threadedly connected to the outer side of the third threaded rod, the screw sleeve and the third transmission wheel are drivingly connected through a third transmission belt, and a mounting L-shaped plate is rotatably connected to the outer side of the screw sleeve and fixedly connected with the adjusting frame.

[0020] The driving bevel gear is fixed with a connecting column on the side close to the LED display screen body, the connecting column is provided with a clamping tooth groove on the side close to the adjusting frame, the adjusting frame is fixed with a mounting ring on the side close to the connecting column, a sliding piece is slidably connected in the mounting ring, the sliding piece is fixed with a clamping tooth on the side close to the clamping tooth groove, and the clamping tooth is clamped with the clamping tooth groove, an electromagnet is mounted in the mounting ring on the side away from the clamping tooth of the sliding piece, a plurality of push springs are mounted on the side away from the clamping tooth of the sliding piece, and the push springs are arranged around the electromagnet, and the push springs are connected with the inner wall of the mounting ring.

[0021] An activity structure is mounted between the mounting ring and the sliding piece, and the activity structure is used for controlling the rotation of the sliding piece.

[0022] The activity structure comprises at least one limiting block, the limiting block is fixed on the outside of the sliding piece, the inner wall of the mounting ring is provided with a limiting groove, the limiting groove is arranged on the outside of the limiting block, the inner diameter of the limiting groove is greater than the outer diameter of the limiting block, at least one second iron sheet is fixed on the side away from the clamping tooth of the sliding piece, a second guide magnet is mounted in the mounting ring on the side away from the clamping tooth of the sliding piece, the number of the second guide magnet is the same as that of the second iron sheet and the positions of the second guide magnet correspond to those of the second iron sheet, a rotating ring-shaped piece is rotationally connected on the side close to the push springs of the sliding piece, and the push springs are mounted on the sliding piece through the rotating ring-shaped piece.

[0023] A plurality of assembly grooves are arranged on the outside of the sealing box body, a mounting shell is rotationally connected in the assembly groove, a light emitting piece is mounted in the mounting shell, a transmission bar is fixed on one end of the mounting shell, the transmission bar is rotationally connected with the sealing box body, the transmission bar extends to the edge position of the sealing box body, a plurality of fourth motors are mounted on the sealing box body, and the output ends of the fourth motors are connected with the transmission bars.

[0024] The present application has the following technical effects:

[0025] The present application can adapt to the curvature characteristics of the edge of the LED curved screen through the blocking and tilting of the abutting bar when the detector moves to the edge position, accurately obtain the Flicker detection data of the edge area, avoid missing the potential flicker problem of the edge, ensure the effectiveness of the full-area detection of the curved screen, and meet the needs of users in actual use for the full-area visual experience of the screen.

[0026] Meanwhile, the light emitting piece is arranged to emit light and simulate ambient light, introduce the ambient light to carry out detection, restore the light environment of the real use scene, solve the problem that the darkroom test is disconnected with the actual scene, ensure that the detection result can accurately reflect the qualification of the product in the actual use of the user, improve the accuracy and reliability of the Flicker test, and provide strong support for the production quality control of the liquid crystal display screen. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of the present application;

[0028] Figure 2 is a sectional view of the sealed box body in the present application;

[0029] Figure 3 is a structural schematic diagram among the abutting strip, the detection assembly and the adjusting frame in the present application;

[0030] Figure 4 is a front view of the adjusting assembly in the present application;

[0031] Figure 5 is a structural schematic diagram among the connecting block, the fixed rod and the detector in the present application;

[0032] Figure 6 is a structural schematic diagram among the fixed ball, the first guide magnet and the first iron sheet in the present application;

[0033] Figure 7 is a structural schematic diagram among the third motor, the rotating rod and the sliding slot in the present application;

[0034] Figure 8 is a structural schematic diagram among the rotating rod, the moving plate and the abutting strip in the present application;

[0035] Figure 9 is a structural schematic diagram among the driven bevel gear, the clamping tooth and the pushing spring in the present application;

[0036] Figure 10 is a structural schematic diagram among the mounting pipe, the light emitting piece and the fourth motor in the present application.

[0037] In the drawings, the component list represented by each sign is as follows:

[0038] 1, sealed box; 2, LED display body; 3, mounting frame; 4, fixed frame; 5, adjusting frame; 6, first threaded rod; 7, first transmission belt; 8, first sliding bar; 9, first motor; 10, second threaded rod; 11, second transmission belt; 12, second sliding bar; 13, second motor; 14, detection assembly; 141, connecting block; 142, swing column; 143, detector; 144, conical spring; 145, fixed rod; 146, fixed ball; 147, first guide magnet; 148, first iron sheet; 15, abutting strip; 16, sliding groove; 17, moving strip; 18, mounting pipe; 19, moving plate; 20, third threaded rod; 21, third motor; 22, driving bevel gear; 23, driven bevel gear; 24, rotating rod; 25, third transmission belt; 26, third transmission wheel; 27, mounting block; 28, second transmission wheel; 29, first transmission wheel; 30, connecting column; 31, clamping tooth groove; 32, mounting ring; 33, sliding sheet; 34, clamping tooth; 35, electromagnet; 36, push spring; 37, limiting groove; 38, limiting block; 39, rotating annular sheet; 40, second guide magnet; 41, second iron sheet; 42, assembly air slot; 43, mounting shell; 44, light emitting piece; 45, transmission strip; 46, fourth motor; 47, screw sleeve; 48, mounting L-shaped plate. DETAILED DESCRIPTION

[0039] In order to make the purpose and advantages of the present application more clear, the present application is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the present application, and does not strictly limit the specific protection scope requested by the present application.

[0040] Example 1:

[0041] As Figures 1-6 shown, a functional test device for liquid crystal display screen production includes a sealed box 1 and an LED display body 2 arranged inside the sealed box 1. A mounting frame 3 is installed in the sealed box 1, and the LED display body 2 is assembled on the mounting frame 3. An adjusting frame 5 is installed in the sealed box 1 through a fixed frame 4, and the adjusting frame 5 is located on one side of the LED display body 2. A detection assembly 14 is installed on the adjusting frame 5, and the detection assembly 14 is used for detecting the LED display body 2. An adjusting assembly is installed on the adjusting frame 5, and the adjusting assembly is used for adjusting the position of the detection assembly 14. The mounting frame 3 can move left and right in the sealed box 1, thereby adapting the detection of the LED display body 2 by the detection assembly 14.

[0042] When the LED display screen body 2 needs to be detected, the opening and closing door provided on the sealed box body 1 is opened, the LED display screen body 2 is placed on the mounting frame 3, and the door is closed, the flickering of the LED display screen body 2 is detected by the detection assembly 14, and the light signal is converted into an electric signal by using a high-sensitivity photodiode, a pre-amplification and filtering circuit and the like, and the time domain signal acquisition and fast Fourier transform functions of the spectrum analyzer are used, and the specific process is as follows:

[0043] The LED display screen body 2 outputs light;

[0044] The detection assembly 14 is aligned with the test area of the LED display screen body 2, and after the spectral filter, it is incident on the photodiode and converted into a weak current signal;

[0045] The pre-amplifier converts the current signal into a voltage signal, and the filtering circuit removes high-frequency noise;

[0046] The spectrum analyzer is triggered by the VSync signal, and in the time domain mode, the voltage change in a frame is collected at a sampling rate of ≥6kHz to generate an original time domain curve;

[0047] The voltage curve is converted into a brightness-time curve by the calibration parameter, and the software automatically analyzes and outputs the result;

[0048] The above description is the prior art, which will not be repeated here.

[0049] Referring to the accompanying Figure 4 The adjusting assembly includes a first driving structure and a second driving structure, and the detection assembly 14 can move up, down, left and right in the adjusting frame 5 by driving the first driving structure and the second driving structure;

[0050] The first driving structure includes two first threaded rods 6 transversely rotatably connected to the inner side of the adjusting frame 5, and the same end of the two first threaded rods 6 is fixed with a first transmission wheel 29, the two first transmission wheels 29 are transmissionally connected by a first transmission belt 7, the outer side of the adjusting frame 5 is provided with a first motor 9, and the output end of the first motor 9 penetrates through the adjusting frame 5 and is connected with one of the first threaded rods 6, and the first sliding bar 8 is threadedly connected between the two first threaded rods 6;

[0051] When the detection assembly 14 needs to move left and right, the first motor 9 can be driven, so that the output end of the first motor 9 drives one of the first threaded rods 6 to rotate, and drives one of the first transmission wheels 29 to rotate through the first threaded rod 6, and then drives the other first transmission wheel 29 to rotate through the first transmission belt 7 through the first transmission wheel 29, so that the two first threaded rods 6 rotate synchronously, and then the first sliding bar 8 is connected with the two first threaded rods 6 through threads, so that the first sliding bar 8 can move left and right on the two first threaded rods 6, and then drives the detection assembly 14 on the first sliding bar 8 to move left and right, and when the first sliding bar 8 moves, the detection assembly 14 can slide on the second sliding bar 12, and the detection assembly 14 and the second sliding bar 12 are connected in a sliding manner;

[0052] The second driving structure comprises two second threaded rods 10 which are vertically and rotatably connected to the inside of the adjusting frame 5, and the same end of the two second threaded rods 10 is fixedly connected with a second transmission wheel 28, and the two second transmission wheels 28 are drivingly connected through a second transmission belt 11, and the outside of the adjusting frame 5 is provided with a second motor 13, and the output end of the second motor 13 penetrates through the adjusting frame 5 and is connected with one of the second threaded rods 10, and the second sliding bar 12 is threadedly connected between the two second threaded rods 10, and the detection assembly 14 is connected with the first sliding bar 8 in a sliding manner;

[0053] When the detection assembly 14 needs to move up and down, the second motor 13 can be driven, so that the output end of the second motor 13 drives one of the second threaded rods 10 to rotate, and drives one of the second transmission wheels 28 to rotate through the second threaded rod 10, and then drives the other second transmission wheel 28 to rotate through the second transmission belt 11 through the second transmission wheel 28, so that the two second threaded rods 10 rotate synchronously, and then the second sliding bar 12 is connected with the two second threaded rods 10 through threads, so that the second sliding bar 12 can move up and down on the two second threaded rods 10, and then drives the detection assembly 14 on the second sliding bar 12 to move left and right, and when the detection assembly 14 moves, the detection assembly 14 can slide on the first sliding bar 8;

[0054] Through the arrangement, the detection assembly 14 can move to various positions inside the adjusting frame 5, so as to move to different positions to detect the light emission on the surface of the LED display screen body 2.

[0055] With reference to the accompanying drawings Figure 5The detection assembly 14 comprises a connecting block 141, and the detection assembly 14 is slidably connected with the first sliding bar 8 and the second sliding bar 12 through the connecting block 141. When the first sliding bar 8 and the second sliding bar 12 move, the detection assembly 14 is driven to move as a whole through the sliding connection with the connecting block 141. The connecting block 141 is provided with a swing column 142 at one end close to the LED display screen body 2, and a movable reset structure is arranged between the connecting block 141 and the swing column 142. The swing column 142 is provided with a detector 143 at one end close to the LED display screen body 2. The detector 143 is a precise optical probe comprising a cosine correction diffuser and an embedded light spectrum matching filter. The detector 143 can be a general display brightness probe such as LS-150 or LS-160, or any probe capable of achieving the purpose in the prior art.

[0056] When the connecting block 141 moves through the first sliding bar 8 and the second sliding bar 12, the swing column 142 is driven to move, and the detector 143 is driven to move, so that different regions of the LED display screen body 2 emitting light are detected through the continuous movement of the detector 143.

[0057] The inner side of the adjusting frame 5 is provided with a plurality of abutting structures.

[0058] Referring to Figs. 1 to 3, Figure 3 , Figs. 4 to 6, Figure 5 and Figs. 7 to 9, Figure 6 The movable reset structure comprises a conical spring 144 arranged between the connecting block 141 and the swing column 142. The diameter of one end of the conical spring 144 close to the connecting block 141 is larger than the diameter of the other end. The connecting block 141 is fixed with a fixed rod 145 at one end close to the swing column 142. The fixed rod 145 is fixed with a fixed ball 146 at one end close to the swing column 142. The fixed ball 146 is movably connected with the swing column 142. The outer side of the fixed ball 146 is uniformly provided with a plurality of first guide magnets 147. The swing column 142 is provided with a plurality of first iron sheets 148. The number and positions of the first guide magnets 147 and the first iron sheets 148 are corresponding, and the first guide magnets 147 and the first iron sheets 148 are magnetically attracted.

[0059] The abutting structure comprises a plurality of abutting bars 15 arranged in the inner side of the adjusting frame 5. When the swing column 142 moves to the edge position of the adjusting frame 5, the abutting bars 15 abut against the swing column 142.

[0060] When the edge position of the curved screen of the LED needs to be detected, the connecting block 141 is driven by the first sliding bar 8 and the second sliding bar 12 to move to the edge position of the adjusting frame 5, so that the front end of the swing column 142 abuts against the abutting bar 15. Since the swing column 142 is movably connected with the fixed ball 146, i.e., the ball connection, the swing column 142 slightly changes the angle at the center position of the fixed ball 146, the conical spring 144 is deformed, and the detection angle of the detector 143 is changed, so that the angle change of the detector 143 can adapt to the angle of the edge position of the curved screen, and the detection effect of the edge position of the curved screen can be improved.

[0061] When the swing column 142 changes the angle, the swing column 142 moves away from the abutting bar 15. The conical spring 144 is arranged to reset the swing column 142 by the elasticity of the conical spring 144. When the swing column 142 changes the angle, the first guide magnet 147 and the first iron sheet 148 are offset. Since the swing column 142 changes the angle slightly, the first guide magnet 147 and the first iron sheet 148 are not completely offset, but only partially offset. When the swing column 142 is away from the abutting bar 15, the magnetic force causes the first guide magnet 147 and the first iron sheet 148 to be in contact again. The conical spring 144 is arranged to reset the swing column 142 to the original position.

[0062] The controller can be arranged in the sealing box 1 to control the starting time or the output end rotation number of the first motor 9 and the second motor 13, so that the position of the swing column 142 can be accurately adjusted, and the swing column 142 can be in contact with the abutting bar 15, and the swing column 142 can be controlled to change the angle.

[0063] Embodiment 2

[0064] The embodiment is further improved on the basis of the embodiment 1, and the technical structure and effect are as follows:

[0065] Referring to the drawings Figures 7-9 The adjusting frame 5 is provided with a plurality of sliding grooves 16, and the plurality of abutting bars 15 are slidably connected in the sliding grooves 16. Each abutting bar 15 can be retracted into the corresponding sliding groove 16. The adjusting frame 5 is provided with a plurality of mounting pipes 18 on the outer side. Each mounting pipe 18 is slidably connected with a moving bar 17. The moving bar 17 is fixedly connected with the abutting bar 15. The top of the moving bar 17 is fixedly connected with a moving plate 19. The top of the moving plate 19 is fixedly connected with a third threaded rod 20.

[0066] The adjusting frame 5 is provided with a driving structure. The driving structure is used to drive the plurality of third threaded rods 20 to move up and down.

[0067] When detecting the normal LED display body 2 instead of the curved screen, the third threaded rod 20 can be driven to move up by the driving structure. When the third threaded rod 20 moves up, the moving plate 19 and the moving strip 17 can be moved, and then the abutting strip 15 is moved. When the abutting strip 15 moves up, it can be retracted into the sliding groove 16, thereby canceling the abutment of the swing column 142, so that the detector 143 can horizontally detect the LED display body 2.

[0068] Referring to the drawings Figures 8-9 The driving structure comprises a third motor 21 mounted on the adjusting frame 5 away from the LED display body 2. The adjusting frame 5 is provided with a mounting piece, and the third motor 21 is mounted on the adjusting frame 5 through the mounting piece. The output end of the third motor 21 is fixed with a driving bevel gear 22, and the outer side of the driving bevel gear 22 is meshed and connected with a plurality of driven bevel gears 23. The end of each driven bevel gear 23 away from the driving bevel gear 22 is fixed with a rotating rod 24, and the rotating rod 24 is rotatably connected with the adjusting frame 5 through a mounting block 27. The top of the rotating rod 24 is fixed with a third transmission wheel 26. The outer side of the third threaded rod 20 is threadedly connected with a sleeve 47, and the sleeve 47 and the third transmission wheel 26 are drivingly connected through a third transmission belt 25. The outer side of the sleeve 47 is rotatably connected with an L-shaped mounting plate 48, and the L-shaped mounting plate 48 is fixedly connected with the adjusting frame 5.

[0069] When the third motor 21 is driven, the driving bevel gear 22 can be rotated, and the meshing connection between the driving bevel gear 22 and the driven bevel gears 23 can make the driving bevel gear 22 drive the plurality of driven bevel gears 23 to rotate synchronously. Then the driven bevel gears 23 drive the rotating rods 24 to rotate, the rotating rods 24 drive the third transmission wheel 26 to rotate, and the third transmission wheel 26 drives the sleeve 47 to rotate through the third transmission belt 25. Then the sleeve 47 and the third threaded rod 20 are threadedly connected, the four edges of the abutting strip 15 are provided with at least two mounting pipes 18, and the rotating force of the sleeve 47 is transmitted to the third threaded rod 20 when the sleeve 47 rotates. The third threaded rod 20 can move up and down through the limiting of the moving strip 17, the mounting pipe 18 and the moving plate 19, so that the moving strip 17 can drive the abutting strip 15 to move up and down. The driving structure can also be replaced by a gas cylinder.

[0070] The outer side of the third transmission wheel 26 and the screw sleeve 47 is provided with teeth, and the inner side of the third transmission belt 25 is also provided with teeth, the screw sleeve 47 and the third transmission wheel 26 are connected with the third transmission belt 25 through the tooth transmission, the transmission effect is improved, and the third transmission belt 25 can be replaced by a chain, the third transmission wheel 26 and the screw sleeve 47 can be replaced by a chain wheel, and the first transmission belt 7 and the second transmission belt 11 in the embodiment 1 can also be chains, and the second transmission wheel 28 and the first transmission wheel 29 can also be chain wheels;

[0071] Referring to the drawings Figure 9 The connecting column 30 is fixed to the side of the driving bevel gear 22 close to the LED display screen body 2, the connecting column 30 is provided with a clamping tooth groove 31 on the side close to the adjusting frame 5, the adjusting frame 5 is fixed to the side close to the connecting column 30 and provided with a mounting ring 32, the mounting ring 32 is slidably connected with a sliding piece 33, the mounting ring 32 is provided with a blocking ring on the side close to the clamping tooth groove 31, so that the sliding piece 33 cannot be completely pulled out of the mounting ring 32, the sliding piece 33 is fixed to the side close to the clamping tooth groove 31 and provided with a clamping tooth 34, the clamping tooth 34 is clamped with the clamping tooth groove 31, the mounting ring 32 is provided with an electromagnet 35 on the side away from the clamping tooth 34 of the sliding piece 33, the electromagnet 35 can attract the sliding piece 33, the sliding piece 33 can be made of iron, and a plurality of push springs 36 are arranged around the electromagnet 35 and connected with the inner wall of the mounting ring 32;

[0072] When the driving bevel gear 22 needs to rotate, the electromagnet 35 is powered on first to attract the sliding piece 33, so that the sliding piece 33 drives the clamping tooth 34 to move into the mounting ring 32, the clamping tooth 34 cancels the clamping of the clamping tooth groove 31, and then the third motor 21 can drive the driving bevel gear 22 and the connecting column 30 to rotate, when the driving bevel gear 22 is rotated, the connecting column 30 and the clamping tooth groove 31 stop rotating, at this time, the electromagnet 35 is turned off, and then the sliding piece 33 and the clamping tooth 34 are moved by the elasticity of the push spring 36, so that the sliding piece 33 and the clamping tooth 34 slide in the mounting ring 32 until the clamping tooth 34 is clamped with the clamping tooth groove 31, so that the driving bevel gear 22 and related parts such as the rotating rod 24 and the third threaded rod 20 cannot rotate;

[0073] The mounting ring 32 and the sliding piece 33 are provided with a movable structure, and the movable structure is used to control the rotation of the sliding piece 33;

[0074] The active structure comprises at least one limiting block 38, and the limiting block 38 is fixed outside the sliding sheet 33; the inner wall of the mounting ring 32 is provided with a limiting groove 37, and the limiting groove 37 is arranged outside the limiting block 38; the inner diameter of the limiting groove 37 is greater than the outer diameter of the limiting block 38; the side of the sliding sheet 33 away from the clamping tooth 34 is fixed with at least one second iron sheet 41; the inside of the mounting ring 32 and the side of the sliding sheet 33 away from the clamping tooth 34 are provided with a second guide magnet 40; the number of the second guide magnet 40 is the same as that of the second iron sheet 41, and the positions of the second guide magnet 40 correspond to those of the second iron sheet 41; the side of the sliding sheet 33 close to the pushing spring 36 is rotationally connected with a rotating ring sheet 39; and the plurality of pushing springs 36 are mounted on the sliding sheet 33 through the rotating ring sheet 39; through the arrangement, when the sliding sheet 33 rotates, the rotating ring sheet 39 is limited by the plurality of pushing springs 36 and cannot rotate, so that the pushing spring 36 does not twist when it rotates with the sliding sheet 33.

[0075] If the clamping tooth 34 moves towards the clamping tooth groove 31, and the clamping tooth 34 is not aligned with the clamping tooth groove 31, because the pushing spring 36 always pushes the sliding sheet 33, the limiting block 38 can be slightly rotated in the limiting groove 37, so that the clamping tooth 34 can rotate and move into the clamping tooth groove 31, thereby avoiding the clamping tooth 34 and the clamping tooth groove 31 from being unable to be clamped together; and a guide slope can be arranged outside the clamping tooth groove 31, so that when the clamping tooth 34 moves to the edge of the clamping tooth groove 31, it can move towards the clamping tooth groove 31 along the guide slope.

[0076] When the sliding sheet 33 is reset, the electromagnet 35 is powered on to attract the sliding sheet 33 and the second iron sheet 41, so that the sliding sheet 33 moves towards the electromagnet 35; when the second iron sheet 41 contacts the second guide magnet 40, the second iron sheet 41 can adjust its angle according to the angle deviation from the second guide magnet 40 through the mutual attraction between the second guide magnet 40 and the second iron sheet 41; when the second iron sheet 41 adjusts, it can drive the sliding sheet 33 to rotate, so that the sliding sheet 33 can drive the limiting block 38 to reset to the middle position of the limiting groove 37, so that the next time the sliding sheet 33 moves towards the clamping tooth groove 31, the sliding sheet 33 cannot rotate due to the limiting block 38 being at the edge of the limiting groove 37; the elastic force of the pushing spring 36 is greater than the attractive force of the second guide magnet 40 and smaller than the attractive force of the electromagnet 35, so that when the electromagnet 35 is powered on, the pushing spring 36 is compressed, the sliding sheet 33 moves, and when the electromagnet 35 is powered off, the pushing spring 36 can overcome the attractive force of the second guide magnet 40 to drive the sliding sheet 33 to move towards the clamping tooth groove 31.

[0077] Example 3

[0078] The embodiment is further improved on the basis of the embodiments 1 and 2, and the technical structure and effects are as follows:

[0079] Referring to the drawings Figure 10 A plurality of assembly grooves 42 are arranged on the outer side of the sealing box 1, and a mounting shell 43 is rotatably connected in the assembly grooves 42. A sealing pad such as rubber is arranged in the assembly grooves 42, so that the assembly grooves 42 and the mounting shell 43 can be sealed. The mounting shell 43 is provided with a light emitting piece 44, one end of the mounting shell 43 is fixed with a transmission bar 45, and the transmission bar 45 is rotatably connected with the sealing box 1. The transmission bar 45 extends to the edge position of the sealing box 1. A plurality of fourth motors 46 are arranged on the sealing box 1, and the output ends of the fourth motors 46 are respectively connected with the transmission bars 45.

[0080] When natural light needs to be collected to further improve the detection effect, the fourth motor 46 can be driven to drive the transmission bar 45 and the mounting shell 43 to rotate. When the light emitting piece 44 rotates to the outside of the sealing box 1, the sealing box 1 has almost no other light source except the LED display screen body 2 as the only light source, so as to detect the LED display screen body 2. When the light emitting piece 44 rotates into the sealing box 1, the light emitting piece 44 emits light to simulate ambient light, thereby changing the contrast relationship between the screen brightness and the surrounding environment, so as to detect the LED display screen body 2 in this case to judge the real effect of the light of the LED display screen body 2 in the natural environment. The fourth motor 46 is provided with a protective cover for protection, and the remaining motors also have protective covers.

[0081] The LED display screen body 2 can be a D65 standard light source lamp, a full-spectrum LED lamp, etc. which can simulate the light source in natural conditions.

[0082] The above is only the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, some improvements and refinements can be made, which should also be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A functional test device for liquid crystal display screen production, comprising a sealed box body (1) and an LED display screen body (2) arranged inside the sealed box body (1), a mounting rack (3) is installed in the sealed box body (1), and the LED display screen body (2) is assembled on the mounting rack (3), characterized in that, The sealing box (1) is provided with an adjusting frame (5) mounted by a fixing frame (4), and the adjusting frame (5) is located at one side of the LED display screen body (2), the adjusting frame (5) is provided with a detection assembly (14) mounted thereon, the detection assembly (14) is used for detecting the LED display screen body (2), and the adjusting frame (5) is provided with an adjusting assembly mounted thereon, and the adjusting assembly is used for adjusting the position of the detection assembly (14).

2. The functional testing device for liquid crystal display panel production according to claim 1, characterized in that: The adjusting assembly comprises a first driving structure and a second driving structure; The first driving structure comprises two first threaded rods (6) transversely rotatably connected to the inner side of the adjusting frame (5), and the same end of the two first threaded rods (6) is fixedly provided with a first transmission wheel (29), the two first transmission wheels (29) are drivingly connected by a first transmission belt (7), the outer side of the adjusting frame (5) is provided with a first motor (9), and the output end of the first motor (9) penetrates through the adjusting frame (5) and is connected with one of the first threaded rods (6), and the first threaded rods (6) are threadedly connected with a first sliding bar (8) between them; The second driving structure comprises two second threaded rods (10) vertically rotatably connected to the inner side of the adjusting frame (5), and the same end of the two second threaded rods (10) is fixedly provided with a second transmission wheel (28), the two second transmission wheels (28) are drivingly connected by a second transmission belt (11), the outer side of the adjusting frame (5) is provided with a second motor (13), and the output end of the second motor (13) penetrates through the adjusting frame (5) and is connected with one of the second threaded rods (10), and the second threaded rods (10) are threadedly connected with a second sliding bar (12) between them; The detection assembly (14) is slidingly connected with the first sliding bar (8) and the second sliding bar (12).

3. The functional testing device for liquid crystal display panel production according to claim 2, characterized in that: The detection assembly (14) comprises a connecting block (141), and the detection assembly (14) is slidingly connected with the first sliding bar (8) and the second sliding bar (12) through the connecting block (141), one end of the connecting block (141) close to the LED display screen body (2) is provided with a swing column (142), and a movable reset structure is mounted between the connecting block (141) and the swing column (142), one end of the swing column (142) close to the LED display screen body (2) is provided with a detector (143), and the inner side of the adjusting frame (5) is provided with a plurality of abutting structures.

4. The functional testing device for liquid crystal display panel production according to claim 3, characterized in that: The activity reset structure comprises a conical spring (144) mounted between the connecting block (141) and the swing column (142), the diameter of the conical spring (144) near one end of the connecting block (141) is larger than that of the other end, a fixed rod (145) is fixed to the end of the connecting block (141) near the swing column (142), a fixed ball (146) is fixed to the end of the fixed rod (145) near the swing column (142), the fixed ball (146) is movably connected with the swing column (142), a plurality of first guide magnets (147) are uniformly arranged on the outer side of the fixed ball (146), a plurality of first iron sheets (148) are arranged in the swing column (142), the number of the first guide magnets (147) is the same as that of the first iron sheets (148) and the positions of the first guide magnets (147) correspond to those of the first iron sheets (148), and the first guide magnets (147) and the first iron sheets (148) are magnetically attracted; The abutting structure comprises a plurality of abutting strips (15) mounted on the inner side of the adjusting frame (5), when the swing column (142) moves to the edge position of the adjusting frame (5), the abutting strips (15) abut against the swing column (142).

5. The functional testing device for liquid crystal display panel production according to claim 4, characterized in that: A plurality of sliding grooves (16) are arranged in the adjusting frame (5), and the plurality of abutting strips (15) are slidably connected in the sliding grooves (16), a plurality of mounting pipes (18) are fixed to the outer side of the adjusting frame (5), a moving strip (17) is slidably connected in each mounting pipe (18), the moving strip (17) is fixedly connected with the abutting strip (15), a moving plate (19) is fixed to the top of the moving strip (17), and a third threaded rod (20) is fixed to the top of the moving plate (19). The adjusting frame (5) is provided with a driving structure, and the driving structure is used for driving the plurality of third threaded rods (20) to move up and down.

6. The functional testing device for liquid crystal display panel production according to claim 5, characterized in that: The driving structure comprises a third motor (21) mounted on the side, away from the LED display screen body (2), of the adjusting frame (5), a driving bevel gear (22) is fixed to the output end of the third motor (21), a plurality of driven bevel gears (23) are meshedly connected to the outer side of the driving bevel gear (22), a rotating rod (24) is fixed to the end, away from the driving bevel gear (22), of each driven bevel gear (23), the rotating rod (24) is rotatably connected with the adjusting frame (5) through a mounting block (27), a third transmission wheel (26) is fixed to the top of the rotating rod (24), a sleeve (47) is threadedly connected to the outer side of the third threaded rod (20), the sleeve (47) and the third transmission wheel (26) are drivingly connected through a third transmission belt (25), an L-shaped mounting plate (48) is rotatably connected to the outer side of the sleeve (47), and the L-shaped mounting plate (48) is fixedly connected with the adjusting frame (5).

7. The functional testing device for liquid crystal display panel production according to claim 6, characterized in that: The main bevel gear (22) is fixed with a connecting column (30) near one side of the LED display screen body (2), and the connecting column (30) is provided with a clamping tooth groove (31) near one side of the adjusting frame (5), the adjusting frame (5) is fixed with a mounting ring (32) near one side of the connecting column (30), the mounting ring (32) is slidably connected with a sliding piece (33), the sliding piece (33) is fixed with a clamping tooth (34) near one side of the clamping tooth groove (31), and the clamping tooth (34) and the clamping tooth groove (31) are clamped with each other, the electromagnetic iron (35) is installed in the mounting ring (32) and located on the side of the sliding piece (33) away from the clamping tooth (34), a plurality of push springs (36) are installed on the side of the sliding piece (33) away from the clamping tooth (34), and the push springs (36) are arranged around the electromagnetic iron (35), and the push springs (36) are connected with the inner wall of the mounting ring (32). The mounting ring (32) and the sliding piece (33) are provided with a movable structure, and the movable structure is used for controlling the rotation of the sliding piece (33).

8. The functional testing device for liquid crystal display panel production according to claim 7, characterized in that: The movable structure comprises at least one limiting block (38), and the limiting block (38) is fixed on the outer side of the sliding piece (33), the inner wall of the mounting ring (32) is provided with a limiting groove (37), and the limiting groove (37) is provided on the outer side of the limiting block (38), and the inner diameter of the limiting groove (37) is greater than the outer diameter of the limiting block (38), at least one second iron sheet (41) is fixed on the side of the sliding piece (33) away from the clamping tooth (34), and a second guide magnet (40) is installed in the inside of the mounting ring (32) and located on the side of the sliding piece (33) away from the clamping tooth (34), and the number of the second guide magnet (40) is the same as that of the second iron sheet (41) and the positions correspond, the sliding piece (33) is rotatably connected with a rotating ring piece (39) on the side close to the push spring (36), and a plurality of the push springs (36) are installed on the sliding piece (33) through the rotating ring piece (39).

9. The functional testing device for liquid crystal display panel production according to claim 1, characterized in that: The outer side of the sealing box body (1) is provided with a plurality of assembly air grooves (42), the mounting shell (43) is rotatably connected in the assembly air groove (42), the mounting shell (43) is installed with a light emitting piece (44), one end of the mounting shell (43) is fixed with a transmission bar (45), and the transmission bar (45) is rotatably connected with the sealing box body (1), the transmission bar (45) extends to the edge position of the sealing box body (1), a plurality of fourth motors (46) are installed on the sealing box body (1), and the output ends of the fourth motors (46) are connected with a plurality of transmission bars (45).

Images