Testing device for liquid crystal screen production

Abstract

The invention is applicable to the technical field of liquid crystal screen testing, and provides a testing device for liquid crystal screen production, which comprises a base, a testing plate, a first camera and a second camera, and further comprises a movable transmission mechanism for driving the testing plate to perform lifting and horizontal transmission; the test adjusting mechanism is used for testing and adjusting the rotating strip; the first camera and the second camera are used for alternately shooting the liquid crystal screen on the test board; and the control box is fixedly mounted at one end of the first support frame and is used for performing movable transmission control on the movable transmission mechanism, performing test adjustment control on the test adjustment mechanism, receiving the current detection image, performing comparison identification on the current detection image, the first shot image and the second shot image, and recording the current test result. According to the invention, all pixel points do not need to be detected and analyzed, the detection speed of the liquid crystal screen is improved, the detection precision can be guaranteed, manual operation is not needed in the testing process, and the labor cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid crystal screen testing, and in particular relates to a testing device for liquid crystal screen production. Background Art

[0002] As a key component in modern electronic devices, the quality and performance of LCD screens directly affect the user experience and the overall performance of the device. LCD screen testing is a series of performance and quality evaluation activities for LCD screens, aiming to ensure that the quality and performance of LCD screens meet relevant standards and meet the actual needs of users.

[0003] In LCD screen testing, the detection of scratches, cracks, bright spots and dead spots is the most basic and important.

[0004] In the prior art, the detection of scratches, cracks, bright spots and dead spots on LCD screens usually requires detection and analysis of each pixel, which is slow, affects the production process, and requires manual operation, increasing labor costs. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a test device for liquid crystal display production, aiming to solve the problems in the prior art.

[0006] The embodiment of the present invention is implemented as follows:

[0007] A test device for liquid crystal screen production, comprising a base, a test board, a first camera and a second camera, wherein a first support frame and a second support frame are fixedly mounted on the base, the test board is movably connected to the second support frame, a fixing sleeve is fixedly mounted on one end of the second support frame, a mounting frame is fixedly mounted on one side of the fixing sleeve, a rotating bar is movably mounted on one end of the mounting frame, and the test device for liquid crystal screen production also includes:

[0008] A movable transmission mechanism, wherein the movable adjustment mechanism is installed between the test plate and the second support frame, and is used to drive the test plate to perform lifting and horizontal transmission;

[0009] A test adjustment mechanism, which is installed between the rotating bar and the mounting frame and is used to test and adjust the rotating bar;

[0010] A first camera and a second camera, wherein the first camera and the second camera are mounted at two ends of the rotating bar and are used to alternately shoot the liquid crystal screen on the test board to obtain a first shot image and a second shot image;

[0011] A control box, which is fixedly mounted at one end of the first support frame, is used to perform active transmission control on the active transmission mechanism, perform test adjustment control on the test adjustment mechanism, receive a current detection image, compare and identify the current detection image, the first captured image and the second captured image, and record the current test result.

[0012] Preferably, the movable transmission mechanism specifically includes:

[0013] A movable sleeve, the movable sleeve being slidably mounted on the second supporting frame;

[0014] A guide shaft, one end of which is fixedly connected to the movable sleeve;

[0015] A sliding seat, wherein the sliding seat is slidably connected to the guide shaft, and the test plate is fixedly mounted on one side of the sliding seat;

[0016] An electric push rod, which is movably mounted on one side of the movable sleeve, and an output end of the electric push rod is movably connected to the sliding seat;

[0017] A lifting transmission structure is installed between the movable sleeve and the second supporting frame.

[0018] Preferably, the angle adjustment structure specifically includes:

[0019] A rack, the rack being fixedly mounted on one side of the second support frame;

[0020] A gear, the gear meshing with the rack for transmission, the gear being rotatably mounted on the movable sleeve, and being used to drive the movable sleeve to rise and fall along the second support frame;

[0021] A first motor, the first motor is mounted on the movable sleeve, and the first motor is connected to the gear transmission;

[0022] A self-locking transmission substructure is installed between the first motor and the gear and is used to transmit the gear.

[0023] Preferably, the test adjustment mechanism specifically includes:

[0024] A support plate, the support plate is fixedly mounted on an end of the mounting frame away from the fixing sleeve;

[0025] A second movable frame, the second movable frame is drivingly connected to the support plate;

[0026] A fourth motor, wherein the fourth motor is fixedly mounted on the second movable frame, and an output end of the fourth motor is fixedly connected to the rotating bar;

[0027] A multi-angle adjustment structure is installed between the support plate and the second movable frame, and is used to adjust the second movable frame at multiple angles.

[0028] Preferably, the multi-angle adjustment structure specifically includes:

[0029] A worm, the worm being rotatably mounted on one side of the support plate;

[0030] A second motor, wherein an output end of the second motor is drivingly connected to one end of the worm;

[0031] A worm wheel, wherein the worm is meshed with the worm wheel for transmission;

[0032] A transmission shaft, wherein the transmission shaft is fixedly connected to the worm gear, and both ends of the transmission shaft are fixedly connected to the second movable frame;

[0033] The first movable frame is rotatably connected to both ends of the transmission shaft, and one end of the first movable frame is transmission-connected to the output end of the third motor.

[0034] Preferably, the active transmission control of the active transmission mechanism, the test adjustment control of the test adjustment mechanism, and receiving the current detection image, comparing and identifying the current detection image, the first captured image and the second captured image, and recording the current test result specifically include the following steps:

[0035] Get test positioning data;

[0036] According to the test positioning data, the movable transmission mechanism is controlled;

[0037] Performing initial adjustment control on the test adjustment mechanism;

[0038] Receiving an initial captured image initially captured by a first camera, and receiving a current detection image;

[0039] Analyzing the initial captured image to determine test adjustment parameters;

[0040] Performing test adjustment control on the test adjustment mechanism according to the test adjustment parameters;

[0041] Receiving a first captured image and a second captured image alternately captured by the first camera and the second camera;

[0042] Compare and identify the current detection image, the first captured image, and the second captured image, and record the current test result.

[0043] Preferably, the analyzing the initial captured image to determine the test adjustment parameters specifically comprises the following steps:

[0044] capturing an initial display image of the liquid crystal screen from the initial captured image;

[0045] Performing boundary recognition on the initial display image to determine whether the boundary is symmetrical;

[0046] If the boundary is asymmetric, record the difference data of the opposite sides;

[0047] According to the edge difference data, adjustment analysis is performed to determine the test adjustment parameters.

[0048] Preferably, comparing and identifying the current detection image, the first captured image, and the second captured image, and recording the current test result specifically comprises the following steps:

[0049] Dividing the current detection image, the first captured image, and the second captured image into a plurality of partial region images, and recording the region correspondence;

[0050] Performing grayscale processing on the plurality of partial area images, and calculating an average grayscale value of the plurality of partial area images;

[0051] According to the region correspondence, comparing the plurality of average grayscale values;

[0052] If the corresponding three average grayscale values ​​are the same, the LCD screen test is recorded as passed.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] The embodiment of the present invention provides a test device for LCD production, including a base, a test board, a first camera and a second camera, and also includes: a movable transmission mechanism for driving the test board to lift and lower and transmit horizontally; a test adjustment mechanism for testing and adjusting the rotating bar; a first camera and a second camera for alternately photographing the LCD on the test board; a control box, which is fixedly mounted at one end of the first support frame, and is used to perform movable transmission control on the movable transmission mechanism, test and adjust the test adjustment mechanism, and receive the current detection image, compare and identify the current detection image, the first captured image and the second captured image, and record the current test result. It is not necessary to perform detection and analysis on all pixels, which improves the detection speed of the LCD and can ensure the detection accuracy. During the test, no manual operation is required, which reduces the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 The three-dimensional structure of the test device for liquid crystal screen production provided by the embodiment of the present invention Figure 1 ;

[0056] Figure 2The three-dimensional structure of the test device for liquid crystal screen production provided by the embodiment of the present invention Figure 2 ;

[0057] Figure 3 An enlarged view of point A provided in an embodiment of the present invention;

[0058] Figure 4 A diagram of the installation structure of a test board provided in an embodiment of the present invention;

[0059] Figure 5 A three-dimensional structural diagram of a test adjustment mechanism provided by an embodiment of the present invention;

[0060] Figure 6 Partial structure of the test adjustment mechanism provided by the embodiment of the present invention Figure 1 ;

[0061] Figure 7 Partial structure of the test adjustment mechanism provided by the embodiment of the present invention Figure 2 ;

[0062] Figure 8 A flow chart of active transmission control, test adjustment control and comparison identification provided by an embodiment of the present invention;

[0063] Fig. 9 A flow chart for determining test adjustment parameters provided by an embodiment of the present invention;

[0064] Fig.10 A flowchart for comparative identification provided by an embodiment of the present invention.

[0065] In the accompanying drawings: 1. base; 2. first support frame; 3. control box; 4. second support frame; 5. movable sleeve; 6. rack; 7. gear; 8. first motor; 9. electric push rod; 10. guide shaft; 11. test board; 12. sliding seat; 13. fixed sleeve; 14. mounting frame; 15. support plate; 16. second motor; 17. worm; 18. worm wheel; 19. transmission shaft; 20. third motor; 21. first movable frame; 22. second movable frame; 23. rotating bar; 24. first camera; 25. second camera; 26. fourth motor. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0067] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0068] In one embodiment of the present invention, Figures 1 to 5 As shown:

[0069] A test device for liquid crystal screen production, comprising a base 1, a test board 11, a first camera 24 and a second camera 25, wherein a first support frame 2 and a second support frame 4 are fixedly mounted on the base 1, the test board 11 is movably connected to the second support frame 4, a fixing sleeve 13 is fixedly mounted on one end of the second support frame 4, a mounting frame 14 is fixedly mounted on one side of the fixing sleeve 13, and a rotating bar 23 is movably mounted on one end of the mounting frame 14, and the test device for liquid crystal screen production also includes:

[0070] A movable transmission mechanism, wherein the movable adjustment mechanism is installed between the test plate 11 and the second support frame 4, and is used to drive the test plate 11 to perform lifting and horizontal transmission;

[0071] A test adjustment mechanism, which is installed between the rotating bar 23 and the mounting frame 14 and is used to test and adjust the rotating bar 23;

[0072] A first camera 24 and a second camera 25, wherein the first camera 24 and the second camera 25 are mounted at two ends of the rotating bar 23, and are used to alternately shoot the liquid crystal screen on the test board 11 to obtain a first shot image and a second shot image;

[0073] A control box 3 is fixedly mounted at one end of the first support frame 2, and is used to perform active transmission control on the active transmission mechanism, perform test adjustment control on the test adjustment mechanism, receive a current detection image, compare and identify the current detection image, the first captured image and the second captured image, and record the current test result.

[0074] In one embodiment of the present invention, a first support frame 2 and a second support frame 4 are fixedly installed vertically on the upper end surface of the base 1, a control box 3 is fixedly installed on the top of the first support frame 2, a test plate 11 is movably installed on the second support frame 4 through a movable transmission mechanism, a fixed sleeve 13 is fixedly installed on the top of the second support frame 4, a mounting frame 14 is fixedly installed on the side of the fixed sleeve 13, a rotating bar 23 is movably installed on the end of the mounting frame 14 away from the fixed sleeve 13 through a test adjustment mechanism, and a first camera 24 and a second camera 25 are respectively fixedly installed at both ends of the lower end surface of the rotating bar 23.

[0075] During operation, after the LCD screen to be tested is placed on the test board 11 by a robotic arm or other mechanism, the control box 3 performs active transmission control on the movable transmission mechanism, and performs test adjustment control on the test adjustment mechanism, and then receives the current detection image, compares and identifies the current detection image with the first captured image and the second captured image for area division, records the current test results, and realizes the production test of the LCD screen.

[0076] It can be understood that the current detection image is the detection image input to the LCD screen for detection and display during the current detection process. There are multiple detection images, which will be randomly selected during the detection process.

[0077] In another embodiment of the present invention, Figures 1 to 7 As shown:

[0078] The movable transmission mechanism specifically comprises:

[0079] A movable sleeve 5, wherein the movable sleeve 5 is slidably mounted on the second support frame 4;

[0080] A guide shaft 10, one end of which is fixedly connected to the movable sleeve 5;

[0081] A sliding seat 12, wherein the sliding seat 12 is slidably connected to the guide shaft 10, and the test plate 11 is fixedly mounted on one side of the sliding seat 12;

[0082] An electric push rod 9, wherein the electric push rod 9 is movably mounted on one side of the movable sleeve 5, and an output end of the electric push rod 9 is movably connected to a sliding seat 12;

[0083] The lifting transmission structure is installed between the movable sleeve 5 and the second support frame 4.

[0084] The angle adjustment structure specifically includes:

[0085] A rack 6, wherein the rack 6 is fixedly mounted on one side of the second support frame 4;

[0086] Gear 7, the gear 7 is meshed with the rack 6 for transmission, the gear 7 is rotatably mounted on the movable sleeve 5, and is used to drive the movable sleeve 5 to rise and fall along the second support frame 4;

[0087] A first motor 8, which is mounted on the movable sleeve 5 and is transmission-connected to the gear 7;

[0088] A self-locking transmission substructure is installed between the first motor 8 and the gear 7 to transmit the power to the gear 7 .

[0089] The test adjustment mechanism specifically includes:

[0090] A mounting frame 14, one end of which is fixedly connected to the fixing sleeve 13;

[0091] A support plate 15, wherein the support plate 15 is fixedly mounted on an end of the mounting frame 14 away from the fixing sleeve 13;

[0092] A second movable frame 22, the second movable frame 22 is transmission-connected to the support plate 15;

[0093] A fourth motor 26, wherein the fourth motor 26 is fixedly mounted on the second movable frame 22;

[0094] A rotating bar 23, wherein the rotating bar 23 is fixedly connected to an output end of a fourth motor 26, and a first camera 24 and a second camera 25 are fixedly mounted at both ends of the rotating bar 23;

[0095] The multi-angle adjustment structure is installed between the support plate 15 and the second movable frame 22 and is used to adjust the second movable frame 22 at multiple angles.

[0096] The multi-angle adjustment structure specifically includes:

[0097] A worm 17, wherein the worm 17 is rotatably mounted on one side of the support plate 15;

[0098] A second motor 16, wherein an output end of the second motor 16 is drivingly connected to one end of the worm 17;

[0099] A worm wheel 18, wherein the worm 17 is meshed with the worm wheel 18 for transmission;

[0100] A transmission shaft 19, wherein the transmission shaft 19 is fixedly connected to the worm gear 18, and both ends of the transmission shaft 19 are fixedly connected to the second movable frame 22;

[0101] The first movable frame 21 is rotatably connected to both ends of the transmission shaft 19 , and one end of the first movable frame 21 is transmission-connected to the output end of the third motor 20 .

[0102] In one embodiment of the present invention, a first supporting frame 2 and a second supporting frame 4 are fixedly installed vertically on the upper end surface of the base 1, a control box 3 is fixedly installed on the top of the first supporting frame 2, a vertically installed rack 6 is fixedly installed on the side of the second supporting frame 4, a movable sleeve 5 is slidably installed on the second supporting frame 4, a first motor 8 is fixedly installed on the movable sleeve 5, and a gear 7 is rotatably installed on the movable sleeve 5, the first motor 8 is connected to the gear 7 through a self-locking transmission substructure, the gear 7 is meshed with the rack 6 for transmission, one end of the guide shaft 10 is fixedly connected to the side of the movable sleeve 5, a sliding seat 12 is slidably installed on the guide shaft 10, a test plate 11 is fixedly installed on the upper end surface of the sliding seat 12, an electric push rod 9 is movably installed on the side of the movable sleeve 5, the output end of the electric push rod 9 is movably connected to one side of the sliding seat 12, and a fixed sleeve 1 is fixedly installed on the top of the second supporting frame 4. 3. One end of the mounting frame 14 is fixedly mounted on the side of the fixing sleeve 13, and the other end of the mounting frame 14 is fixedly mounted with a supporting plate 15. A worm 17 is rotatably mounted on the lower end surface of the supporting plate 15. One end of the worm 17 is connected to the output end of the second motor through a coupling. The first movable frame 21 is rotatably mounted on both ends of the worm 17. One end of the first movable frame 21 is connected to the output end of the third motor 20. A transmission shaft 19 is rotatably mounted on the first movable frame 21. A worm wheel 18 is fixedly mounted on the middle part of the transmission shaft 19. The worm 17 is meshed with the worm wheel 18 for transmission. The two ends of the second movable frame 22 are fixedly connected to the two ends of the transmission shaft 19. A fourth motor 26 is fixedly mounted on the middle part of the second movable frame 22. The output end of the fourth motor 26 is fixedly connected to the middle part of the rotating bar 23. The first camera 24 and the second camera 25 are fixedly mounted on the two ends of the lower end surface of the rotating bar 23.

[0103] It is understandable that the self-locking transmission substructure can be composed of a worm gear.

[0104] During operation, after placing the LCD screen to be tested on the test board 11 through a mechanical arm or other mechanism, the control box 3 controls the first motor 8 to make the first motor 8 work, and drives the gear 7 to rotate through the self-locking transmission substructure, and the gear 7 is meshed with the rack 6 for transmission, driving the movable sleeve 5 to rise and fall along the second support frame 4, so that the test board 11 is lifted and lowered to the height required in the test positioning data, and then drives the electric push rod 9 to work, and the electric push rod 9 drives the sliding seat 12 to slide horizontally along the guide shaft 10, and drives the test board 11 to move horizontally to the horizontal position required in the test positioning data through the sliding seat 12, and then the control box 3 performs initial adjustment control on the fourth motor 26, so that the fourth motor 26 drives the rotating bar 23 The first camera 24 is rotated to drive the first camera 24 to rotate to a preset shooting position for initial shooting, receive the initial shooting image initially shot by the first camera 24, and receive the current detection image, by identifying the initial shooting image, from the initial shooting image, intercept the initial display image of the LCD screen, and then perform boundary recognition on the initial display image to determine whether the boundary is symmetrical. In the case of asymmetrical boundaries, record the opposite side difference data, and then perform adjustment analysis based on the opposite side difference data to determine the test adjustment parameters, and then drive the second motor 16 and the third motor 20 to work according to the test adjustment parameters. The second motor 16 can drive the worm 17 to rotate, and the worm 17 is meshed with the worm wheel 18 for transmission, driving the worm wheel 18 to rotate, and the worm The wheel 18 drives the transmission shaft 19 to rotate, and then drives the rotating bar 23 to rotate along the axis of the transmission shaft 19 through the second movable frame 22. The third motor 20 can drive the first movable frame 21 to rotate, and then drive the second movable frame 22 and the rotating bar 23 to rotate along the axis of the worm 17, so that the rotating bar 23, the first camera 24 and the second camera 25 can be adjusted at multiple angles, so that the rotating bar 23 can be parallel to the upper end surface of the LCD screen. Afterwards, by driving the fourth motor 26 to work, the fourth motor 26 can drive the rotating bar 23 to rotate, so that the first camera 24 and the second camera 25 alternately shoot above the LCD screen, thereby obtaining the first captured image and the second captured image, according to the preset The number of image divisions is to equally divide the image areas of the current detection image, the first captured image, and the second captured image to obtain multiple partial area images, and record the area correspondence, then grayscale the multiple partial area images, calculate the average grayscale values ​​corresponding to the multiple partial area images, and compare the multiple average grayscale values ​​according to the area correspondence to achieve the judgment of the LCD screen test. Specifically, if the corresponding three average grayscale values ​​are the same, the LCD screen test is recorded as qualified; if the average grayscale values ​​of the partial area images corresponding to the first captured image and the second captured image are the same, but different from the average grayscale values ​​of the partial area images corresponding to the current detection image, then the LCD screen test is recorded as unqualified;If the average grayscale values ​​of the partial area images corresponding to the first captured image and the second captured image are different, it is necessary to repair the first camera 24 and the second camera 25 and then retest. ;

[0105] It is understandable that due to the various shapes of the lower end surface of the LCD screen, when placed on the test board 11, the upper end surface of the LCD screen may not be in a horizontal state. The boundary recognition can be performed to determine whether it is in a horizontal state. Specifically, if the lengths of the two left-right symmetrical boundaries are the same, and the lengths of the two up-and-down symmetrical boundaries are the same, then the upper end surface of the LCD screen is determined to be in a horizontal state, and no test adjustment is required at this time; if the lengths of the two left-and-right symmetrical boundaries are different, or the lengths of the two up-and-down symmetrical boundaries are different, then the upper end surface of the LCD screen is determined to be not in a horizontal state, and test adjustment is required at this time.

[0106] It is understandable that different numbers of image divisions can be set to adjust the test accuracy. Specifically, the more the number of image divisions, the higher the test accuracy.

[0107] Specifically, Figure 8 A flow chart of active transmission control, test adjustment control and comparison identification provided by an embodiment of the present invention.

[0108] In one embodiment of the present invention, performing active transmission control on the active transmission mechanism, performing test adjustment control on the test adjustment mechanism, receiving a current detection image, comparing and identifying the current detection image, the first captured image, and the second captured image, and recording the current test result specifically include the following steps:

[0109] Step S101, obtaining test positioning data;

[0110] Step S102, performing active transmission control on the active transmission mechanism according to the test positioning data;

[0111] Step S103, performing initial adjustment control on the test adjustment mechanism;

[0112] Step S104, receiving an initial captured image initially captured by the first camera 24, and receiving a current detection image;

[0113] Step S105, analyzing the initial captured image to determine test adjustment parameters;

[0114] Step S106, performing test adjustment control on the test adjustment mechanism according to the test adjustment parameters;

[0115] Step S107, receiving the first captured image and the second captured image alternately captured by the first camera 24 and the second camera 25;

[0116] Step S108: compare and identify the current detection image, the first captured image, and the second captured image, and record the current test result.

[0117] Furthermore, Fig. 9 A flow chart for determining test adjustment parameters provided by an embodiment of the present invention.

[0118] Specifically, in one embodiment of the present invention, the analyzing the initial captured image to determine the test adjustment parameters specifically includes the following steps:

[0119] Step S1051, capturing an initial display image of the liquid crystal screen from the initial captured image;

[0120] Step S1052: performing boundary recognition on the initial display image to determine whether the boundary is symmetrical;

[0121] Step S1053: if the boundary is asymmetric, record the difference data of opposite sides;

[0122] Step S1054: perform adjustment analysis according to the edge difference data to determine the test adjustment parameters.

[0123] Furthermore, Fig.10 A flowchart for comparative identification provided by an embodiment of the present invention.

[0124] Specifically, in one embodiment of the present invention, comparing and identifying the current detection image, the first captured image, and the second captured image, and recording the current test result specifically includes the following steps:

[0125] Step S1081, dividing the current detection image, the first captured image and the second captured image into a plurality of partial region images, and recording the region correspondence;

[0126] Step S1082, graying the plurality of partial region images, and calculating an average gray value of the plurality of partial region images;

[0127] Step S1083, comparing the plurality of average grayscale values ​​according to the region correspondence;

[0128] Step S1084: If the corresponding three average grayscale values ​​are the same, then the LCD screen test is recorded as passed.

[0129] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A test device for liquid crystal screen production, comprising a base (1), a test board (11), a first camera (24) and a second camera (25), characterized in that: A first support frame (2) and a second support frame (4) are fixedly mounted on the base (1); the test board (11) is movably connected to the second support frame (4); a fixing sleeve (13) is fixedly mounted on one end of the second support frame (4); a mounting frame (14) is fixedly mounted on one side of the fixing sleeve (13); a rotating bar (23) is movably mounted on one end of the mounting frame (14); and the test device for liquid crystal screen production further comprises: A movable transmission mechanism, wherein the movable adjustment mechanism is installed between the test plate (11) and the second support frame (4) and is used to drive the test plate (11) to perform lifting and horizontal transmission; A test adjustment mechanism, the test adjustment mechanism being installed between the rotating bar (23) and the mounting frame (14) and being used for testing and adjusting the rotating bar (23); A first camera (24) and a second camera (25), wherein the first camera (24) and the second camera (25) are mounted at two ends of the rotating bar (23) and are used to alternately photograph the liquid crystal screen on the test board (11) to obtain a first photographed image and a second photographed image; A control box (3), the control box (3) is fixedly mounted on one end of the first support frame (2), and is used to perform active transmission control on the active transmission mechanism, perform test adjustment control on the test adjustment mechanism, receive a current test image, perform comparison and recognition on the current test image, the first captured image and the second captured image, and record a current test result.

2. The test device for liquid crystal panel production according to claim 1, characterized in that: The movable transmission mechanism specifically comprises: A movable sleeve (5), wherein the movable sleeve (5) is slidably mounted on the second support frame (4); A guide shaft (10), one end of which is fixedly connected to the movable sleeve (5); A sliding seat (12), wherein the sliding seat (12) is slidably connected to the guide shaft (10), and the test plate (11) is fixedly mounted on one side of the sliding seat (12); An electric push rod (9), the electric push rod (9) is movably mounted on one side of the movable sleeve (5), and the output end of the electric push rod (9) is movably connected to the sliding seat (12); A lifting transmission structure is installed between the movable sleeve (5) and the second support frame (4).

3. The test device for LCD production according to claim 2, characterized in that: The angle adjustment structure specifically includes: A rack (6), wherein the rack (6) is fixedly mounted on one side of the second support frame (4); A gear (7), the gear (7) meshing with the rack (6) for transmission, the gear (7) being rotatably mounted on the movable sleeve (5) and used for driving the movable sleeve (5) to rise and fall along the second support frame (4); A first motor (8), the first motor (8) being mounted on the movable sleeve (5), and the first motor (8) being transmission-connected to the gear (7); A self-locking transmission substructure is installed between the first motor (8) and the gear (7) and is used to transmit the gear (7).

4. The test device for LCD production according to claim 1, characterized in that: The test adjustment mechanism specifically includes: A support plate (15), wherein the support plate (15) is fixedly mounted on an end of the mounting frame (14) away from the fixing sleeve (13); A second movable frame (22), the second movable frame (22) being drivingly connected to the support plate (15); a fourth motor (26), the fourth motor (26) being fixedly mounted on the second movable frame (22), and an output end of the fourth motor (26) being fixedly connected to the rotating bar (23); A multi-angle adjustment structure is installed between the support plate (15) and the second movable frame (22) and is used to adjust the second movable frame (22) at multiple angles.

5. The test device for LCD production according to claim 4, characterized in that: The multi-angle adjustment structure specifically includes: A worm (17), wherein the worm (17) is rotatably mounted on one side of the support plate (15); A second motor (16), wherein an output end of the second motor (16) is drivingly connected to one end of a worm (17); A worm wheel (18), wherein the worm (17) is meshed with the worm wheel (18) for transmission; A transmission shaft (19), wherein the transmission shaft (19) is fixedly connected to the worm gear (18), and both ends of the transmission shaft (19) are fixedly connected to the second movable frame (22); A first movable frame (21), wherein the first movable frame (21) is rotatably connected to both ends of the transmission shaft (19), and one end of the first movable frame (21) is transmission-connected to the output end of the third motor (20).

6. The test device for LCD production according to claim 1, characterized in that: The active transmission control of the active transmission mechanism, the test adjustment control of the test adjustment mechanism, and receiving the current detection image, comparing and identifying the current detection image, the first captured image, and the second captured image, and recording the current test result specifically include the following steps: Get test positioning data; According to the test positioning data, the movable transmission mechanism is controlled; Performing initial adjustment control on the test adjustment mechanism; Receiving an initial captured image initially captured by a first camera (24), and receiving a current detection image; Analyzing the initial captured image to determine test adjustment parameters; Performing test adjustment control on the test adjustment mechanism according to the test adjustment parameters; Receiving a first captured image and a second captured image alternately captured by a first camera (24) and a second camera (25); Compare and identify the current detection image, the first captured image, and the second captured image, and record the current test result.

7. The test device for liquid crystal panel production according to claim 6, characterized in that: The analyzing the initial captured image to determine the test adjustment parameters specifically comprises the following steps: capturing an initial display image of the liquid crystal screen from the initial captured image; Performing boundary recognition on the initial display image to determine whether the boundary is symmetrical; If the boundary is asymmetric, record the difference data of the opposite sides; According to the edge difference data, adjustment analysis is performed to determine the test adjustment parameters.

8. The test device for LCD production according to claim 6, characterized in that: The comparing and identifying the current detection image, the first captured image, and the second captured image, and recording the current test result specifically comprises the following steps: Dividing the current detection image, the first captured image, and the second captured image into a plurality of partial region images, and recording the region correspondence; Performing grayscale processing on the plurality of partial area images, and calculating an average grayscale value of the plurality of partial area images; According to the region correspondence, comparing the plurality of average grayscale values; If the corresponding three average grayscale values ​​are the same, the LCD screen test is recorded as passed.

Images