CN110609405B - Backlight module picture detection device and detection method - Google Patents
Backlight module picture detection device and detection method Download PDFInfo
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- CN110609405B CN110609405B CN201910927496.XA CN201910927496A CN110609405B CN 110609405 B CN110609405 B CN 110609405B CN 201910927496 A CN201910927496 A CN 201910927496A CN 110609405 B CN110609405 B CN 110609405B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
A backlight module picture detection device and a detection method relate to the technical field of display device manufacturing, and the backlight module picture detection device comprises a rack, a detection bin, a bearing mechanism, a conveying mechanism and a picture detection system, wherein the detection bin, the bearing mechanism and the conveying mechanism are arranged on the rack; the bearing mechanism is used for bearing the backlight module to be detected; the conveying mechanism is arranged to convey the bearing mechanism bearing the backlight module to be detected into and out of the detection bin; the picture detection system is set to carry out picture detection on the backlight module to be detected sent into the detection bin. The backlight module picture detection device of this application embodiment through setting up the detection storehouse, goes on in detecting the storehouse to backlight unit's picture detection, can avoid the interference of external light source to the testing result to can avoid among the testing process backlight unit's highlight to the injury of measurement personnel eyes.
Description
Technical Field
The application relates to the technical field of display device manufacturing, in particular to a backlight module picture detection device and a detection method.
Background
The liquid crystal display needs to provide light source by the backlight module to achieve the display function, and the performance of the backlight module directly affects the display quality of the liquid crystal display. The manufacturing cost of the backlight module accounts for 30-50% of the liquid crystal display module, and is one of the key components of the liquid crystal display panel. With the technical progress and the wide application of liquid crystal displays, the market has made higher demands on the performance of liquid crystal displays, such as higher brightness, wider viewing angle, lower cost, lower power consumption, and lighter weight.
In order to ensure that the light emitting performance of the backlight module meets the requirements, the surface cleanliness, the light emitting uniformity, the brightness, the visual angle and other performances of each backlight module need to be detected before shipment. The traditional technology adopts a manual detection method, a product is held by a detector in a hand, the product is detected from all angles by naked eyes, the eyes of the detector can be seriously injured due to the high brightness of the backlight module during long-term work, more than 1000 products need to be detected every day, the fatigue of the detector and the reduction of the detection efficiency are easily caused due to the long-term repetitive work, and in addition, the product is easily deformed in a hand-held operation mode due to the lightness and thinness of the product.
Disclosure of Invention
The present application is directed to a backlight module image detection device and a detection method thereof, so as to avoid the above problems of the conventional manual detection method.
In order to achieve the purpose, the technical scheme of the application is as follows: a backlight module picture detection device comprises a rack, a detection bin, a bearing mechanism, a conveying mechanism and a picture detection system, wherein the detection bin, the bearing mechanism and the conveying mechanism are arranged on the rack; the bearing mechanism is used for bearing the backlight module to be tested; the conveying mechanism is arranged to convey the bearing mechanism bearing the backlight module to be detected into and out of the detection bin; the picture detection system is arranged to carry out picture detection on the backlight module to be detected sent into the detection bin.
Optionally, the bearing mechanism comprises a bearing jig for bearing and fixing the backlight module to be detected and an angle adjusting device for adjusting the turnover angle of the bearing jig.
Optionally, the carrying jig comprises a carrier plate and a cover plate which can be opened and closed and is arranged on the carrier plate; the support plate is equipped with and is used for the holding to wait to examine backlight unit's storage tank, the apron is equipped with fretwork portion for the picture area that makes when waiting to examine backlight unit's surface is established to the apron lid exposes.
Optionally, a vacuum adsorption hole is formed in a groove wall of the accommodating groove and used for adsorbing the backlight module to be detected in the accommodating groove under the action of vacuum.
Optionally, the conveying mechanism includes a turntable, and two sets of the bearing mechanisms are arranged on the turntable, wherein one set of the bearing mechanism is located in the detection bin, and the other set of the bearing mechanism is located outside the detection bin.
Optionally, the image detection system comprises a camera and an image processor, the camera is arranged in the detection bin and is used for photographing the backlight module to be detected sent into the detection bin, and the image processor is set to judge the detection result according to the photograph photographed by the camera.
Optionally, still including locating detect the mechanism of lighting a lamp in the storehouse, it sets up to light a lamp the mechanism set up to bear the mechanism and deliver to detect the position back in the storehouse, with wait on the bearing mechanism to examine backlight unit electricity and be connected in order to light and wait to examine backlight unit.
Optionally, still including locating on the load-bearing mechanism or detect the light source in the storehouse, the light source sets up to be in wait to examine after backlight unit extinguishes start and illuminate wait to examine backlight unit.
Optionally, still including locating detection device in the storehouse, cleaning device is including setting up detect guide rail on the storehouse inner wall, with guide rail sliding fit's roller frame, rotation set up cleaning roller on the roller frame, and be used for the drive the roller frame is followed the gliding drive arrangement of guide rail, cleaning roller is used for waiting to examine backlight unit and cleans.
Optionally, the device further comprises an air filtering device, wherein the air filtering device is arranged to filter air at the loading position where the bearing mechanism is located inside and outside the detection bin.
Another technical scheme of the application is as follows: a picture detection method of a backlight module comprises the following steps:
conveying the bearing mechanism bearing the backlight module to be detected into a detection bin;
carrying out picture detection on the backlight module to be detected sent into the detection bin;
and sending the bearing mechanism bearing the detected backlight module out of the detection bin.
Optionally, the to sending into examine in the detection storehouse treat backlight unit and carry out the picture and detect, include:
lightening the backlight module to be detected;
photographing the backlight module to be detected at different angles and at different brightness;
and judging the detection result of the photographed picture.
Optionally, the to sending into examine in the detection storehouse and examine backlight unit and carry out the picture and detect, still include:
extinguishing the backlight module to be detected, starting a light source and illuminating the backlight module to be detected;
photographing the backlight module to be detected at different angles;
and judging the detection result of the shot picture.
Optionally, when the backlight module to be detected sent into the detection bin is subjected to picture detection, the detection method further includes: and feeding the next backlight module to be detected to another set of bearing mechanism positioned outside the detection bin.
Has the advantages that:
the backlight module picture detection device of this application embodiment through setting up the detection storehouse, goes on in detecting the storehouse to backlight unit's picture detection, can avoid the interference of external light source to the testing result to can avoid backlight unit's highlight to the injury of testing personnel eyes in the testing process. Through setting up and detecting supporting bearing mechanism in storehouse and conveying mechanism, easily realize automatic detection operation.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention.
Fig. 1 is an external structural view of a backlight module image detection device according to an embodiment of the present application;
FIG. 2 is a schematic view of an internal structure of the image detection apparatus of the backlight module shown in FIG. 1;
FIG. 3 is a schematic view of an assembly structure of a carrying mechanism and a conveying mechanism of the image detection apparatus of the backlight module shown in FIG. 1;
fig. 4 is a schematic structural view of a carrying fixture of the carrying mechanism in fig. 3;
FIG. 5 is a schematic view of an assembly structure of the supporting jig and the angle adjusting device of the supporting mechanism in FIG. 3;
FIG. 6 is a schematic view of a cleaning device of the image detection apparatus of the backlight module shown in FIG. 1;
FIG. 7 is a schematic view of the cleaning device in FIG. 6 in a working state of cleaning the backlight module to be inspected;
FIG. 8 is a schematic structural view of a carrying jig and an angle adjusting device of the carrying mechanism of FIG. 5 before assembly;
the reference signs are: 1. the device comprises a rack, 2, a detection bin, 3, a bearing mechanism, 31, a bearing jig, 311, a carrier plate, 312, a cover plate, 3121, a hollow part, 32, an angle adjusting device, 321, a fixing plate, 322, a rotating shaft, 323, a driving device, 4, a conveying mechanism, 41, a turntable, 5, a backlight module, 6, a camera, 7, a cleaning device, 71, a cleaning roller, 72, a roller frame, 73, a guide rail, 8, an air filtering device, 9, a control panel, 10 and a shell.
Detailed Description
The technical scheme of the application is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application.
Referring to fig. 1 and fig. 2, the present embodiment provides a backlight module image detection apparatus, including a frame 1, a detection bin 2 disposed on the frame 1, a carrying mechanism 3, a conveying mechanism 4, and an image detection system; the bearing mechanism 3 is used for bearing the backlight module 5 to be detected; the conveying mechanism 4 is arranged to convey the bearing mechanism 3 bearing the backlight module 5 to be detected into and out of the detection bin 2; the picture detection system is arranged to carry out picture detection on the backlight module 5 to be detected sent into the detection bin 2.
The backlight unit picture detection device of this embodiment, through setting up detection storehouse 2, go on in detection storehouse 2 to backlight unit 5's picture detection, be the darkroom environment in the detection storehouse 2, can avoid the interference of external light source to the testing result to can avoid the injury of highlight backlight unit 5 in the testing process to measurement personnel eyes. Through setting up and detecting supporting bearing mechanism 3 and conveying mechanism 4 in storehouse 2, easily realize automatic detection operation.
In this embodiment, the image detection items for the backlight module 5 may include: the gray scale of the image of the backlight module 5, the uniformity of the luminous brightness, the visual angle, the surface scratch, the foreign matters and the like.
Referring to fig. 1 and 2, in an exemplary embodiment, a housing 10 is disposed outside the rack 1, a table is formed on the housing 10, the inspection bin 2 is located at the rear side above the table, the conveying mechanism 4 can be located in the housing 10, and a portion of the supporting mechanism 3 supporting the backlight module 5 to be inspected is exposed on the table and is driven by the conveying mechanism 4 to enter and exit the inspection bin 2.
Referring to fig. 3 and 5, the supporting mechanism 3 may include a supporting fixture 31 for supporting and fixing the backlight module 5 to be inspected, and an angle adjusting device 32 for adjusting an overturning angle of the supporting fixture 31. Different overturning angles of the bearing jig 31 are adjusted through the angle adjusting device 32, so that the backlight module 5 to be detected on the bearing mechanism 3 is synchronously overturned to different preset angles, and therefore, the backlight module 5 to be detected at different angles can be subjected to picture detection in the picture detection process of the backlight module. The arrow direction in fig. 5 represents the turning direction of the loading jig 31.
Referring to fig. 4, the carrying fixture 31 may include a carrier 311 and a cover plate 312 covering and uncovering the carrier 311; the carrier plate 311 is provided with a containing groove for containing the backlight module 5 to be inspected, the cover plate 312 is provided with a hollow portion 3121 for exposing the picture area of the backlight module 5 to be inspected when the cover plate 312 covers the surface of the backlight module 5 to be inspected. Wherein, the shape and size of the carrying fixture 31 is adapted to the shape and size of the backlight module 5 to be inspected, and the different carrying fixtures 31 can be adapted to the backlight module 5 to be inspected with different sizes. The cover plate 312 includes a rectangular frame, the inner area of the frame is the hollow portion 3121, one frame edge of the frame is hinged to one side edge of the support plate 311, when the frame is covered on the support plate 311, the frame covers the periphery of the surface of the backlight module 5 to be inspected in the accommodating groove and fixes the backlight module 5 to be inspected, and the hollow portion 3121 exposes the picture area of the backlight module 5 to be inspected, so as to perform the subsequent picture inspection.
For further to examining backlight unit 5 to be fixed, prevent to examine backlight unit 5 and drop at removal or upset in-process, can be equipped with the vacuum adsorption hole on the cell wall of storage tank, be used for under the vacuum effect will examine backlight unit 5 and adsorb in the storage tank. Wherein, can all set up the vacuum adsorption hole in the bottom of storage tank and circumference to treat the equal vacuum adsorption of bottom surface and the side all around of examining backlight unit 5. The inside of the carrier 311 is provided with a gas channel communicated with each vacuum adsorption hole, and the gas channel is connected with an external vacuum pumping device to perform vacuum pumping operation in the accommodating groove. In order to ensure the sealing performance inside the accommodating groove, rubber sealing rings are arranged around the cover plate 312 and the support plate 311, so that the cover plate 312 is sealed after being covered.
Referring to fig. 8, the angle adjusting device 32 may include a bracket, a rotating shaft 322 rotatably disposed on the bracket, a fixing plate 321 fixed on the rotating shaft 322, and a driving device 323 for driving the rotating shaft 322 to rotate. The bearing jig 31 can be detachably fixed on the fixing plate 321, so as to be conveniently detached and replaced. The driving device 323 drives the rotating shaft 322 to rotate at different angles, so as to drive the carrying jig 31 thereon to synchronously turn over to a corresponding angle, thereby realizing the turning positioning of the carrying jig 31 at different angles.
Referring to fig. 3, the conveying mechanism 4 may include a turntable 41, and the carrier mechanism 3 is disposed on the turntable 41, and the carrier mechanism 3 is carried into and out of the inspection chamber 2 by the rotation of the turntable 41. In order to improve the detection operation efficiency, the turntable 41 may be provided with two sets of the bearing mechanisms 3, wherein one set of the bearing mechanism 3 is located in the detection bin 2, and the other set of the bearing mechanism 3 is located outside the detection bin 2. Like this, when being located one set of bearing mechanism 3 in detecting storehouse 2 on waiting to examine backlight unit 5 and carrying out the picture and detect, another set of bearing mechanism 3 that is located outside detecting storehouse 2 can carry out getting of examining backlight unit and waiting to examine backlight unit 5's material loading operation next in step. After the backlight module 5 to be inspected on one set of bearing mechanism 3 in the inspection bin 2 completes the picture inspection, at this time, the other set of bearing mechanism 3 outside the inspection bin 2 completes the feeding, the rotating disc 41 rotates by a certain angle (the arrow direction in fig. 3 represents the rotating direction of the rotating disc 41), for example, 180 degrees, then one set of bearing mechanism 3 in the inspection bin 2 bears the backlight module after the inspection and rotates out from the inspection bin 2 to the feeding position, the other set of bearing mechanism 3 outside the inspection bin 2 bears the backlight module 5 to be inspected and rotates into the inspection bin 2 to the inspection position, so, the two sets of bearing mechanisms 3 alternately and circularly operate, and the waiting time is reduced.
Referring to fig. 2, the image detection system may adopt an automatic image detection apparatus based on industrial camera vision (AOI), and may include a camera 6 and an image processor, the camera 6 is disposed in the detection chamber 2 and is configured to photograph the backlight module 5 to be inspected sent into the detection chamber 2, and the image processor is configured to perform detection result judgment according to a photograph photographed by the camera 6. The camera 6 is electrically connected with the image processor outside the detection chamber 2, and can send the pictures taken by the camera to the image processor. The camera 6 may be a high precision CCD industrial camera.
The backlight module picture detection device of this embodiment can also be including locating detect the mechanism of lighting a lamp in the storehouse 2, it sets up to light a lamp the mechanism 3 and deliver to after the detection position in the detection storehouse 2, with wait on the bearing mechanism 3 to examine backlight unit 5 electricity and be connected in order to light and examine backlight unit 5. Wherein, when the turntable 41 rotates a certain angle and the bearing mechanism 3 is conveyed to the detection position in the detection bin 2, the lighting mechanism can automatically contact with the external circuit board of the backlight module 5 to be detected on the bearing mechanism 3 and realize the electric connection, thereby lighting the backlight module 5 to be detected.
The backlight module picture detection device of the embodiment can further comprise a light source arranged on the bearing mechanism 3 or in the detection bin 2, wherein the light source is arranged to be started and illuminated after the backlight module 5 to be detected is extinguished so as to detect the backlight module 5 to be detected. Wherein, the light source is for waiting to examine the outside independent light source of backlight unit 5, and it starts and illuminates after waiting to examine backlight unit 5 and extinguish wait to examine backlight unit 5, like this, can realize waiting to examine backlight unit 5 self not under the luminous circumstances, treat to examine the surface flaw condition of backlight unit 5 and detect.
Referring to fig. 2, fig. 6 and fig. 7, the backlight module picture detection apparatus of the present embodiment may further include a cleaning device 7 disposed in the detection bin 2, where the cleaning device 7 includes a guide rail 73 disposed on an inner wall of the detection bin 2, a roller frame 72 in sliding fit with the guide rail 73, a cleaning roller 71 rotatably disposed on the roller frame 72, and a driving device for driving the roller frame 72 to slide along the guide rail 73, and the cleaning roller 71 is used for cleaning the backlight module 5 to be detected. The number of the guide rails 73 may be two, and two ends of the roller frame 72 are respectively in sliding fit with the two guide rails 73. After the bearing mechanism 3 carries the backlight module 5 to be inspected to enter the detection position in the detection bin 2, the cleaning device 7 moves to the position, the cleaning roller 71 of the cleaning device is positioned on the surface of the backlight module 5 to be inspected, the driving device drives the roller frame 72 to slide along the guide rail 73, and then the cleaning roller 71 rolls along the surface of the backlight module 5 to be inspected (see the arrow indication direction in fig. 7), so that the surface cleaning of the backlight module 5 to be inspected is realized.
Referring to fig. 1, the backlight module image detection device of this embodiment may further include an air filtering device 8, where the air filtering device 8 is configured to perform air filtering on the loading positions of the bearing mechanisms 3 inside the detection bin 2 and outside the detection bin 2. The air filtering device 8 can adopt a fan filter unit, can be provided with two sets and is positioned at the top of the rack 1, so that the air in the detection bin 2 and outside the detection bin 2 at the feeding position of the bearing mechanism 3 is ensured to be clean.
In order to realize the automatic operation of the detection process, the backlight module picture detection device of the embodiment may further include a PLC control system, and a controller of the PLC control system is electrically connected to the carrying mechanism 3, the conveying mechanism 4, the picture detection system, the cleaning device 7, the light source, and the air filtering device 8, respectively. A control panel 9 is arranged on the frame 1, and corresponding control buttons and the like are arranged on the control panel 9. During detection, corresponding detection parameters and test programs are selected according to the model of the backlight module to be detected, and corresponding control buttons are started, so that automatic operation of each detection step can be realized. In the detection process, a servo system can be adopted for driving control in order to accurately control the action of each mechanism.
The detection process of the image detection device of the backlight module of the embodiment can be as follows: to wait to examine backlight unit 5 and place in the storage tank of the support plate 311 who bears tool 31, press the start button, bear the automatic lid of apron 312 of tool 31 and close, evacuating device automatic start is waiting to examine the bottom surface of backlight unit 5 and form the vacuum environment all around to examine backlight unit 5 and effectively fix on bearing tool 31 and do not shelter from the picture region of waiting to examine backlight unit 5 simultaneously. The turntable 41 is driven by the servo motor to rotate 180 degrees, the carrying mechanism 3 carrying the backlight module 5 to be inspected is rotated to the detection position inside the detection bin 2 (meanwhile, the carrying mechanism 3 in the detection bin 2 carries the last backlight module which has completed detection and is rotated out of the detection bin 2 to the feeding position), and the lighting mechanism automatically contacts with the external circuit board of the backlight module 5 to be inspected and lights the backlight module 5 to be inspected. The cleaning device 7 is automatically started, the cleaning roller 71 moves to the surface of the backlight module 5 to be detected, and rolls on the surface of the backlight module 5 to be detected, so that the cleaning operation is completed. The bearing jig 31 is driven by the angle adjusting device 32 to be turned over to each detection angle preset in the program, meanwhile, the picture detection system is automatically started, and the camera 6 captures pictures of the backlight module 5 to be detected at each angle and at each brightness and sends the pictures to the image processor for analysis and detection result judgment. Go out and wait to examine backlight unit 5, the independent light source that bears on the mechanism 3 or detect in the storehouse 2 is opened, and picture detecting system carries out detection analysis to waiting to examine backlight unit 5's surface simultaneously. While the backlight module 5 to be detected is detected in the detection bin 2, the other set of bearing mechanism 3 is arranged outside the detection bin 2, and the material taking of the last detected backlight module and the material loading of the next backlight module 5 to be detected are finished manually or by a mechanical arm without waiting; the above operations are thus circulated.
Referring to fig. 1 and fig. 2, based on the backlight module image detection apparatus of the foregoing embodiment, another embodiment of the present application provides an image detection method of a backlight module, including:
sending the bearing mechanism 3 bearing the backlight module 5 to be detected into the detection bin 2;
carrying out picture detection on the backlight module 5 to be detected sent into the detection bin 2;
and sending the bearing mechanism 3 bearing the detected backlight module out of the detection bin 2.
The backlight module image detection method of the embodiment sends the backlight module 5 to be detected into the detection bin 2 for image detection, can avoid the interference of an external light source on a detection result, and can avoid the damage of strong light of the backlight module to eyes of detection personnel in the detection process.
Wherein, to sending into examine in the detection storehouse 2 treat backlight unit 5 carry out the picture and detect, include:
lightening the backlight module 5 to be detected;
photographing the backlight module 5 to be detected at different angles and brightness;
and judging the detection result of the shot picture.
Like this, the picture condition of waiting to examine backlight unit 5 under different angles and luminance can be detected, for example, the grey scale of the backlight unit 5 picture of examining, the degree of consistency of luminance, visual angle etc..
For further to wait to examine the surface condition of backlight unit 5 and detect, to sending into examine in the detection storehouse 2 and examine backlight unit 5 and carry out the picture and detect, still include:
extinguishing the backlight module 5 to be detected, starting a light source and illuminating the backlight module 5 to be detected;
photographing the backlight module 5 to be detected at different angles;
and judging the detection result of the photographed picture.
Like this, can realize waiting to examine backlight unit 5 self under the luminous circumstances, treat the surface condition of examining backlight unit 5 and detect, for example, whether the surface that detects waiting to examine backlight unit 5 has fish tail, foreign matter etc..
Referring to fig. 2 and 3, in order to improve the detection operation efficiency, when the backlight module 5 to be detected sent into the detection bin 2 is subjected to image detection, the detection method further includes: and feeding the next backlight module 5 to be detected to the other set of bearing mechanism 3 positioned outside the detection bin 2. Like this, can save time, after examining the backlight unit 5 and accomplishing the picture and detect on one set of bearing mechanism 3 in detecting storehouse 2, another set of bearing mechanism 3 outside detecting storehouse 2 accomplishes the material loading of examining next backlight unit 5 now. When one set of bearing mechanism 3 in the detection bin 2 bears the backlight module after detection and comes out to the material loading position from the detection bin 2, the other set of bearing mechanism 3 outside the detection bin 2 bears the next backlight module 5 to be detected and enters the detection bin 2 to the detection position, and the process is repeated.
In the description of the embodiments of the present application, unless expressly stated or limited otherwise, the terms "connected," "fixedly connected," "mounted," and "mounted" are to be construed broadly and include, for example, fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening elements, or may be connected through two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Claims (13)
1. A kind of back light module frame detection device, characterized by that: the device comprises a rack, a detection bin, a bearing mechanism, a conveying mechanism and a picture detection system, wherein the detection bin, the bearing mechanism and the conveying mechanism are arranged on the rack;
the bearing mechanism is used for bearing the backlight module to be tested;
the conveying mechanism is arranged to convey the bearing mechanism bearing the backlight module to be detected into and out of the detection bin; the conveying mechanism comprises a turntable, two sets of bearing mechanisms are arranged on the turntable, and when one set of bearing mechanism is positioned in the detection bin, the other set of bearing mechanism is positioned outside the detection bin; the conveying mechanism is also set to enable the turntable to rotate for a certain angle, one bearing mechanism in the detection bin carries the detected backlight module to be rotated out of the detection bin to the feeding position, and the other bearing mechanism outside the detection bin carries the next backlight module to be detected to be rotated into the detection bin to the detection position;
the picture detection system is set to carry out picture detection on the backlight module to be detected sent into the detection bin.
2. The apparatus for inspecting a display screen of a backlight module as claimed in claim 1, wherein: the bearing mechanism comprises a bearing jig for bearing and fixing the backlight module to be detected and an angle adjusting device for adjusting the turnover angle of the bearing jig.
3. The apparatus for detecting the frame of a backlight module as claimed in claim 2, wherein: the bearing jig comprises a support plate and a cover plate which can be opened and closed and is covered on the support plate; the support plate is equipped with and is used for the holding to wait to examine backlight unit's storage tank, the apron is equipped with fretwork portion for the picture area that makes when waiting to examine backlight unit's surface is established to the apron lid exposes.
4. The apparatus for detecting the picture of a backlight module as claimed in claim 3, wherein: the groove wall of the accommodating groove is provided with a vacuum adsorption hole for adsorbing the backlight module to be detected in the accommodating groove under the vacuum action.
5. The apparatus for inspecting a display screen of a backlight module as claimed in claim 1, wherein: the picture detection system comprises a camera and an image processor, the camera is arranged in the detection bin and is used for photographing the backlight module to be detected in the detection bin, and the image processor is set to judge the detection result according to the photograph photographed by the camera.
6. The device for detecting a picture of a backlight module as claimed in claim 1, wherein: still including locating detect the mechanism of lighting a lamp in the storehouse, the mechanism of lighting a lamp sets up to bear the weight of the mechanism and deliver to after detecting the position in the storehouse, with wait on the bearing mechanism to examine backlight unit electricity and be connected in order to light and wait to examine backlight unit.
7. The apparatus for detecting the picture of a backlight module as claimed in claim 6, wherein: still including locating on the bearing mechanism or detect the light source in the storehouse, the light source sets up to be in wait to examine after backlight unit extinguishes start and illuminate wait to examine backlight unit.
8. The apparatus for inspecting a display screen of a backlight module as claimed in claim 1, wherein: still including locating detect cleaning device in the storehouse, cleaning device is including setting up detect guide rail on the storehouse inner wall, with guide rail sliding fit's roller frame, rotation set up cleaning roller on the roller frame, and be used for the drive the roller frame is followed the gliding drive arrangement of guide rail, cleaning roller is used for waiting to examine backlight unit and cleans.
9. The device for detecting a picture of a backlight module as claimed in claim 1, wherein: still include air filter, air filter sets up to right inside the detection storehouse and outside the detection storehouse the material loading position at carrier mechanism place carries out filtration.
10. A method for detecting the image detection apparatus of the backlight module according to claim 1, comprising:
conveying the bearing mechanism bearing the backlight module to be detected into a detection bin;
carrying out picture detection on the backlight module to be detected sent into the detection bin;
and sending the bearing mechanism bearing the detected backlight module out of the detection bin.
11. The inspection method according to claim 10, wherein the inspecting the backlight module to be inspected fed into the inspection chamber comprises:
lightening the backlight module to be detected;
photographing the backlight module to be detected at different angles and at different brightness;
and judging the detection result of the shot picture.
12. The inspection method according to claim 11, wherein the inspecting the backlight module to be inspected fed into the inspection chamber further comprises:
extinguishing the backlight module to be detected, starting a light source and illuminating the backlight module to be detected;
photographing the backlight module to be detected at different angles;
and judging the detection result of the shot picture.
13. The inspection method according to claim 10, wherein the inspection method further comprises, while performing the image inspection on the backlight module to be inspected fed into the inspection chamber: and feeding the next backlight module to be detected to another set of bearing mechanism outside the detection bin.
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| CN201910927496.XA CN110609405B (en) | 2019-09-27 | 2019-09-27 | Backlight module picture detection device and detection method |
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| CN201910927496.XA CN110609405B (en) | 2019-09-27 | 2019-09-27 | Backlight module picture detection device and detection method |
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| CN110609405B true CN110609405B (en) | 2022-09-23 |
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|---|---|---|---|---|
| CN114062386B (en) * | 2022-01-12 | 2022-03-18 | 南通市垲德利光电科技有限公司 | Image acquisition equipment for AOI (automatic optical inspection) of backlight plate |
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