CN112461510A - Liquid crystal display screen backlight module quality detection device and backlight module detection method - Google Patents
Liquid crystal display screen backlight module quality detection device and backlight module detection method Download PDFInfo
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- CN112461510A CN112461510A CN202011240338.6A CN202011240338A CN112461510A CN 112461510 A CN112461510 A CN 112461510A CN 202011240338 A CN202011240338 A CN 202011240338A CN 112461510 A CN112461510 A CN 112461510A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
- G01M11/0214—Details of devices holding the object to be tested
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Abstract
The invention discloses a quality detection device and a detection method for a backlight module of a liquid crystal display screen, relates to the field of liquid crystal display screens, and aims to solve the problem of low manual polishing detection efficiency of the existing backlight module of the liquid crystal display screen. The device has a novel structure, can effectively perform polishing detection operations in different directions and different angles on the liquid crystal display screen backlight module, reduces the labor amount of workers, improves the accuracy and efficiency of backlight module detection, and is suitable for popularization and use.
Description
Technical Field
The invention relates to the field of liquid crystal display screens, in particular to a liquid crystal display screen backlight module quality detection device and a backlight module detection method.
Background
The backlight module is one of the key components of the liquid crystal display panel. The function is to provide sufficient brightness and light source with uniform distribution, so that the image can be displayed normally. Liquid crystal displays are passive light emitting elements and the display screen itself does not emit light but is illuminated by a backlight system underneath it. The backlight source and the liquid crystal display screen are combined together to form the liquid crystal display module. The liquid crystal backlight is a planar uniform lighting device, and cold cathode fluorescent lamps or LED lamp strips serving as light sources are arranged on two sides or one side of the whole backlight source. The cold cathode lamp tube is a linear light source, the LED is a point light source, and a light guide plate is needed for converting the light source into a surface light source. The light guide plate is generally made of acrylic plastic with high light transmittance, and the surface is very smooth and flat, so that most of the internal light can be regularly and totally reflected on the flat surface of the light guide plate and can not be emitted out of the light guide plate. The bottom of the light guide plate of the liquid crystal display is printed with white dots. At the position where the light guide plate is printed with the mesh points, the light rays are not regularly reflected totally but emitted to the upper part of the light guide plate. Controlling the density of the dots at each position can control how much light is emitted from the light guide plate at that position. The precisely designed mesh points of the light guide plate can enable light rays incident from two sides to be uniformly spread on the whole plane. Optical films are placed above the light guide plate, and the films play a role in homogenizing light and converging large-angle light for front observation and the like.
Backlight unit need use the detection lens to carry out the multi-angle to it and polish and detect in process of production, and this kind of detection is only accomplished by the manual work, and workman's intensity of labour is big, and low in labor efficiency produces bad product moreover easily, consequently, in order to solve this type of problem, we have proposed liquid crystal display backlight unit quality detection device and backlight unit detection method.
Disclosure of Invention
The quality detection device and the detection method for the backlight module of the liquid crystal display screen solve the problem that the existing backlight module of the liquid crystal display screen is low in efficiency due to manual polishing.
In order to achieve the purpose, the invention adopts the following technical scheme:
the quality detection device for the backlight module of the liquid crystal display screen comprises a detection table, wherein one side of the top end of the detection table is fixedly provided with an L-shaped bracket, the bottom end of the horizontal section of the bracket is provided with a detection lens, an adjusting device is arranged between the detection lens and the bracket, the top end of the detection table is fixedly provided with a storage box, the back surface of the detection table is fixedly connected with a fixed plate, one side of the fixed plate, which is far away from the detection table, is fixedly connected with a mounting plate, the inside of the mounting plate is provided with a fourth mounting groove, the inside of the fourth mounting groove is fixedly provided with a cylinder, the inside of the fixed plate is provided with a moving groove, the end part of a piston rod of the cylinder is fixedly connected with a connecting rod, the end part of the connecting rod extends to the inside of the moving groove, just detect the inside of platform and offer two first mounting grooves, second mounting groove and the third mounting groove that are the symmetric distribution respectively about detecting mouthful center, and the homonymy the second mounting groove is located between first mounting groove and the third mounting groove, it runs through and is provided with the movable rod to slide between first mounting groove, second mounting groove and the third mounting groove, the tip of movable rod extends to the inside fixedly connected with locating plate that detects the mouth, just the movable rod is kept away from and is connected with the haulage rope between the one end of locating plate and the movable plate.
Preferably, the circumference lateral wall cover of movable rod is equipped with reset spring, just reset spring's both ends all are connected with the mount pad, and the mount pad at reset spring both ends contacts with the lateral wall of locating plate and the inner wall of third mounting groove respectively.
Preferably, the inside fixedly connected with fixed block of second mounting groove, just the movable rod slides and runs through the fixed block, one of them the fixed block is close to one side rotation that detects the mouth and installs driven gear, just be connected with latch device between driven gear and the movable rod, the top fixed mounting who detects the platform has driving motor, just driving motor is close to driven gear one side and sets up, driving motor's output shaft fixedly connected with drive gear, just inside drive gear's circumference extended to the second mounting groove, and with driven gear meshing.
Preferably, the clamping device comprises a clamping strip and a clamping groove, the circumferential side wall of the movable rod is fixedly connected with the clamping strip which is distributed in an annular array, the circumferential inner wall of the driven gear is provided with the clamping groove which is distributed in the annular array, and the clamping strip is matched with the clamping groove.
Preferably, the inside of first mounting groove is rotated and is installed and be horizontal leading wheel, just the leading wheel is walked around to the haulage rope, the one end fixedly connected with turning block that the haulage rope is close to the movable rod, just the turning block is connected with the one end rotation that the locating plate was kept away from to the movable rod.
Preferably, one side that two the locating plate is close to each other all is provided with the constant head tank that is the U type.
Preferably, adjusting device includes first spout, first slider, diaphragm, second spout and second slider, the bottom of support horizontal segment is provided with first spout along its length direction, just the inside slidable mounting of first spout has first slider, the bottom fixedly connected with diaphragm of first slider, just the bottom of diaphragm is provided with the second spout along its length direction, just the inside slidable mounting of second spout has the second slider, the bottom fixed mounting of second slider has the measuring lens.
The quality detection method of the liquid crystal display screen backlight module comprises the following steps:
installing a liquid crystal display screen backlight module in a detection port according to the size of the liquid crystal display screen backlight module, and then carrying out lighting detection operation on the backlight module at different angles and positions by adjusting the angle of the backlight module and moving a detection lens;
the detection operation process is realized in an automatic mode, the backlight module does not need to be manually held, the permeability of the detection light is ensured, and meanwhile, the backlight module is not damaged;
and meanwhile, the photoelectric sensor is arranged at the position of the detection port, so that the rotation angle of the position of the re-detection port of the backlight module is more accurate.
The invention has the beneficial effects that:
1. the moving plate is driven to move through the cylinder, so that the moving plate can pull the traction rope, the movable rod and the positioning plate, the device can position and clamp backlight modules of different sizes, the driving motor drives the two gears to rotate, the movable rod and the positioning clamp plate are driven to rotate, the device can rotate the whole backlight module to be detected, and automatic angle adjustment is achieved.
2. Through setting up adjusting device between support and detection camera lens to can carry out the regulation of optional position in the X axle of horizontal plane and Y axle inside to the position that detects the camera lens, make it can replace the manual work to operate, effectual improvement backlight unit's detection efficiency reduces workman's amount of labour simultaneously, improves liquid crystal display backlight unit's detection accuracy.
In conclusion, the invention can effectively carry out the lighting detection operation of different directions and different angles on the backlight module of the liquid crystal display screen, reduces the labor amount of workers, improves the accuracy and the efficiency of the detection of the backlight module, and is suitable for popularization and use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of A of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged view of B of FIG. 1 in accordance with the present invention;
FIG. 4 is a schematic view of the connection between the driven gear and the movable rod according to the present invention;
fig. 5 is a schematic view of the internal structure of the inspection table, the mounting plate and the fixing plate according to the present invention.
Reference numbers in the figures: the detection platform comprises a detection table 1, a storage box 2, a support 3, a detection lens 4, a first sliding groove 5, a detection port 6, a guide wheel 7, a first mounting groove 8, a driving motor 9, a driving gear 10, a second mounting groove 11, a fixed block 12, a driven gear 13, a third mounting groove 14, a return spring 15, a positioning plate 16, a traction rope 17, a movable rod 18, a clamping strip 19, a positioning groove 20, a clamping groove 21, a first sliding block 22, a transverse plate 23, a second sliding groove 24, a second sliding block 25, a mounting plate 26, an air cylinder 27, a fixing plate 28, a movable plate 29, a movable groove 30, a fourth mounting groove 31 and a connecting rod 32.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, the quality detection device for the backlight module of the liquid crystal display screen comprises a detection table 1, wherein an L-shaped bracket 3 is fixedly installed at one side of the top end of the detection table 1, a detection lens 4 is arranged at the bottom end of the horizontal section of the bracket 3, an adjusting device is arranged between the detection lens 4 and the bracket 3, a storage box 2 is fixedly installed at the top end of the detection table 1, a fixed plate 28 is fixedly connected to the back surface of the detection table 1, a mounting plate 26 is fixedly connected to one side of the fixed plate 28 away from the detection table 1, a fourth mounting groove 31 is arranged inside the mounting plate 26, an air cylinder 27 is fixedly installed inside the fourth mounting groove 31, a moving groove 30 is arranged inside the fixed plate 28, a connecting rod 32 is fixedly connected to the end of a piston rod of the air cylinder 27, a moving plate 29 is fixedly connected to the inside of the moving groove 30, and examine the inside of test table 1 and seted up two first mounting grooves 8 that are the symmetric distribution respectively about detecting mouth 6 center, second mounting groove 11 and third mounting groove 14, and second mounting groove 11 of homonymy is located between first mounting groove 8 and the third mounting groove 14, first mounting groove 8, it runs through between second mounting groove 11 and the third mounting groove 14 to slide and is provided with movable rod 18, the tip of movable rod 18 extends to the inside fixedly connected with locating plate 16 that detects mouth 6, one side that two locating plates 16 are close to each other all is provided with the constant head tank 20 that is the U type, and movable rod 18 keeps away from between the one end of locating plate 16 and the movable plate 29 and be connected with haulage rope 17.
The circumference lateral wall cover of movable rod 18 is equipped with reset spring 15, and reset spring 15's both ends all are connected with the mount pad, and the mount pad at reset spring 15 both ends contacts with the lateral wall of locating plate 16 and the inner wall of third mounting groove 14 respectively.
Inside fixedly connected with fixed block 12 of second mounting groove 11, and movable rod 18 slides and runs through fixed block 12, one of them fixed block 12 is close to one side rotation that detects mouth 6 and installs driven gear 13, and be connected with latch device between driven gear 13 and the movable rod 18, the top fixed mounting who detects platform 1 has driving motor 9, and driving motor 9 is close to driven gear 13 one side setting, driving motor 9's output shaft fixedly connected with drive gear 10, and inside drive gear 10's circumference extended to second mounting groove 11, and mesh with driven gear 13.
The clamping device comprises clamping strips 19 and clamping grooves 21, the clamping strips 19 distributed in an annular array are fixedly connected to the circumferential side wall of the movable rod 18, the clamping grooves 21 distributed in an annular array are formed in the circumferential inner wall of the driven gear 13, and the clamping strips 19 are matched with the clamping grooves 21.
The inside of first mounting groove 8 rotates and installs and be horizontal leading wheel 7, and haulage rope 17 walks around leading wheel 7, and haulage rope 17 is close to the one end fixedly connected with turning block of movable rod 18, and the turning block rotates with the one end that locating plate 16 was kept away from to movable rod 18 and is connected.
Adjusting device includes first spout 5, first slider 22, diaphragm 23, second spout 24 and second slider 25, the bottom of 3 horizontal segments of support is provided with first spout 5 along its length direction, and the inside slidable mounting of first spout 5 has first slider 22, the bottom fixedly connected with diaphragm 23 of first slider 22, and the bottom of diaphragm 23 is provided with second spout 24 along its length direction, and the inside slidable mounting of second spout 24 has second slider 25, the bottom fixed mounting of second slider 25 has detection camera lens 4.
When the backlight module of the liquid crystal display is detected, the cylinder 27 is started to pull the connecting rod 32, the connecting rod 32 pulls the moving plate 29 to slide in the moving groove 30, meanwhile, the moving plate 29 pulls the pulling rope 17 to pull the moving rod 18, the moving rod 18 drives the positioning plate 16 to move, when the distance between the two positioning plates 16 can put down the display module to be detected, the cylinder 27 operates reversely, the reset spring 15 pushes the positioning plate 16 to move reversely, so that the backlight module of the liquid crystal display to be detected can be clamped in the positioning groove 20, then the driving motor 9 is started, the driving motor 9 drives the driving gear 10 to rotate, the driving gear 10 is meshed with the driven gear 13, the driven gear 13 can rotate, and due to the clamping device arranged between the driven gear 13 and the moving rod 18, the driven gear 13 can drive the moving rod 18 to rotate, drive locating plate 16 and wait to detect the liquid crystal display backlight unit through movable rod 18 and rotate, open measuring lens 4 simultaneously, through the slip of first slider 22 in first spout 5 inside and the slip of second slider 25 in second spout 24 inside to can make measuring lens 4 carry out the polishing detection in different angles and different position to the liquid crystal display backlight unit who detects mouth 6 internally mounted, reduce workman's intensity of labour, improve simultaneously and detect the accuracy.
The quality detection method of the liquid crystal display screen backlight module comprises the following steps:
installing a liquid crystal display screen backlight module in a detection port according to the size of the liquid crystal display screen backlight module, and then carrying out lighting detection operation on the backlight module at different angles and positions by adjusting the angle of the backlight module and moving a detection lens;
the detection operation process is realized in an automatic mode, the backlight module does not need to be manually held, the permeability of the detection light is ensured, and meanwhile, the backlight module is not damaged;
and meanwhile, the photoelectric sensor is arranged at the position of the detection port, so that the rotation angle of the position of the re-detection port of the backlight module is more accurate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. Liquid crystal display backlight unit quality detection device, including examining test table (1), its characterized in that, the top one side fixed mounting who examines test table (1) has support (3) that is the L type, just the bottom of the horizontal segment of support (3) is provided with detection camera lens (4), be provided with adjusting device between detection camera lens (4) and support (3), the top fixed mounting who examines test table (1) has storage tank (2), just the back fixed connection who examines test table (1) has fixed plate (28), one side fixed connection who examines test table (1) is kept away from to fixed plate (28) has mounting panel (26), the inside of mounting panel (26) is provided with fourth mounting groove (31), just the inside fixed mounting of fourth mounting groove (31) has cylinder (27), the inside of fixed plate (28) is provided with shifting chute (30), a connecting rod (32) is fixedly connected to the end of a piston rod of the cylinder (27), a movable plate (29) is fixedly connected to the inner part of the movable groove (30) and extends to the end of the connecting rod (32), a detection port (6) which is arranged in a vertically through manner is formed in the detection platform (1), two first mounting grooves (8), second mounting grooves (11) and third mounting grooves (14) which are symmetrically distributed about the center of the detection port (6) are formed in the detection platform (1), the second mounting grooves (11) on the same side are located between the first mounting grooves (8) and the third mounting grooves (14), a movable rod (18) is arranged between the first mounting grooves (8), the second mounting grooves (11) and the third mounting grooves (14) in a sliding and penetrating manner, and the end of the movable rod (18) extends to the inner part of the detection port (6) and is fixedly connected with a positioning plate (16), and a traction rope (17) is connected between one end of the movable rod (18) far away from the positioning plate (16) and the movable plate (29).
2. The quality detection device for the backlight module of the liquid crystal display screen according to claim 1, wherein a return spring (15) is sleeved on a circumferential side wall of the movable rod (18), mounting seats are connected to both ends of the return spring (15), and the mounting seats at both ends of the return spring (15) are respectively in contact with a side wall of the positioning plate (16) and an inner wall of the third mounting groove (14).
3. The liquid crystal display backlight unit quality detection device of claim 1, characterized in that, the inside fixedly connected with fixed block (12) of second mounting groove (11), just movable rod (18) slide and run through fixed block (12), one of them fixed block (12) are close to one side rotation that detects mouth (6) and are installed driven gear (13), just be connected with latch device between driven gear (13) and movable rod (18), the top fixed mounting who detects platform (1) has driving motor (9), just driving motor (9) are close to driven gear (13) one side setting, the output shaft fixedly connected with drive gear (10) of driving motor (9), just the circumference of drive gear (10) extends to inside second mounting groove (11), and meshes with driven gear (13).
4. The quality detection device for the backlight module of the liquid crystal display screen according to claim 3, wherein the clamping device comprises a clamping strip (19) and a clamping groove (21), the clamping strip (19) distributed in an annular array is fixedly connected to the circumferential side wall of the movable rod (18), the clamping groove (21) distributed in an annular array is formed in the circumferential inner wall of the driven gear (13), and the clamping strip (19) is matched with the clamping groove (21).
5. The quality detection device for the backlight module of the liquid crystal display screen according to claim 1, wherein the inside of the first installation groove (8) is rotatably installed with a transverse guide wheel (7), the pulling rope (17) bypasses the guide wheel (7), one end of the pulling rope (17) close to the movable rod (18) is fixedly connected with a rotating block, and the rotating block is rotatably connected with one end of the movable rod (18) far away from the positioning plate (16).
6. The device for detecting the quality of the backlight module of the liquid crystal display screen according to claim 1, wherein one side of the two positioning plates (16) close to each other is provided with a U-shaped positioning groove (20).
7. The quality detection device for the backlight module of the liquid crystal display screen according to claim 1, wherein the adjusting device comprises a first sliding groove (5), a first slider (22), a transverse plate (23), a second sliding groove (24) and a second slider (25), the first sliding groove (5) is arranged at the bottom end of the horizontal section of the bracket (3) along the length direction of the bottom end, the first slider (22) is slidably mounted inside the first sliding groove (5), the transverse plate (23) is fixedly connected to the bottom end of the first slider (22), the second sliding groove (24) is arranged at the bottom end of the transverse plate (23) along the length direction of the transverse plate, the second slider (25) is slidably mounted inside the second sliding groove (24), and the detection lens (4) is fixedly mounted at the bottom end of the second slider (25).
8. The method for detecting the quality of the backlight module of the liquid crystal display screen is characterized by comprising the following steps:
installing a liquid crystal display screen backlight module in a detection port according to the size of the liquid crystal display screen backlight module, and then carrying out lighting detection operation on the backlight module at different angles and positions by adjusting the angle of the backlight module and moving a detection lens;
the detection operation process is realized in an automatic mode, the backlight module does not need to be manually held, the permeability of the detection light is ensured, and meanwhile, the backlight module is not damaged;
and meanwhile, the photoelectric sensor is arranged at the position of the detection port, so that the rotation angle of the position of the re-detection port of the backlight module is more accurate.
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| CN202011240338.6A CN112461510B (en) | 2020-11-09 | 2020-11-09 | Liquid crystal display backlight unit quality detection device |
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| CN113894065A (en) * | 2021-10-14 | 2022-01-07 | 安徽赛时达显示科技有限公司 | Light effect detection device for intelligent manufacturing of backlight module with multi-angle reflection grabbing |
| CN114333561A (en) * | 2022-01-30 | 2022-04-12 | 深圳市瀚达美电子有限公司 | Quantum dot LED lamp strip suitable for high-color-gamut backlight module and backlight module |
| CN114486757A (en) * | 2022-01-21 | 2022-05-13 | 深圳市立鑫光电科技有限公司 | LED display screen color difference detection device and method |
| CN115031932A (en) * | 2022-07-01 | 2022-09-09 | 深圳科利盟精密有限公司 | Detection tool for backlight convenient to operation mixing of colors |
| CN118032299A (en) * | 2024-04-09 | 2024-05-14 | 镇江焱发微电子有限公司 | Display screen performance detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113894065A (en) * | 2021-10-14 | 2022-01-07 | 安徽赛时达显示科技有限公司 | Light effect detection device for intelligent manufacturing of backlight module with multi-angle reflection grabbing |
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| CN114333561A (en) * | 2022-01-30 | 2022-04-12 | 深圳市瀚达美电子有限公司 | Quantum dot LED lamp strip suitable for high-color-gamut backlight module and backlight module |
| CN114333561B (en) * | 2022-01-30 | 2022-09-20 | 深圳市瀚达美电子有限公司 | Quantum dot LED lamp strip suitable for high-color-gamut backlight module and backlight module |
| CN115031932A (en) * | 2022-07-01 | 2022-09-09 | 深圳科利盟精密有限公司 | Detection tool for backlight convenient to operation mixing of colors |
| CN118032299A (en) * | 2024-04-09 | 2024-05-14 | 镇江焱发微电子有限公司 | Display screen performance detection system |
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| Publication number | Publication date |
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| CN112461510B (en) | 2022-10-11 |
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