CN106773165A - Image for display module detection shows detection means and its detection method - Google Patents

Abstract

Detection means and its detection method are shown the invention discloses a kind of image for display module detection, it is characterised in that the device includes following part：With the sealing mechanism for input and output display module mouthful to be detected, the delivery platform for carrying display module to be detected is provided with sealing mechanism, a movement detection image harvester is provided with delivery platform carries out detection image collection to display module to be detected.The image realized according to the present invention shows detection means and its detection method, detecting under different scenes can be directed to and coordinate streamline to detect the use of test and devise special image display detection means, normal temperature detection and high/low temperature detection can be carried out, detection every time is carried out in the detection interior of a shielding for closing, avoid the interference in the external world, so that detection is more accurate, and above-mentioned image display detection means can be integrated in flowing water line detector well, can significantly increase the efficiency of automatic streamline wire type detection.

Description

Image for display module detection shows detection means and its detection method

Technical field

The invention belongs to the detection testing field of display module, more particularly, to a kind of for display module detection Image shows detection means and its detection method.

Background technology

With the development of science and technology in largely having appeared in the life and work of people with liquid crystal display, such as flat board electricity Brain, liquid crystal display, intelligent television, auto navigation screen etc..The critical component of these equipment is liquid crystal display module (below Abbreviation module) due to market competition and model change, module size that each manufacturer thus produces is increasing, PPI More and more higher, the display effect more and more increasingly abundanter module of clear, kind.

Large batch of module is endlessly manufactured on different production lines, but due to module technique and the mode of production Differ greatly, cause to have various defective products in the presence of, it is necessary to show module after the completion of production in the module produced The detection of diagram picture, to eliminate the module of various bad phenomenons (such as bad point, dim spot, display brightness uneven, flicker), Conventional detection is detected manually by operator, and module and PG boxes (Patten Generator figures are such as connected manually As signal generator), TURP is opened manually changes display image, the effect of module displays image is checked by naked eyes, and manually will Show that the module of OK or NG is placed into specified location.So meeting manual detection can cause module detection and finished product to dispatch from the factory speed slowly, Human eye easily fatigue, detect it is inaccurate, as module size is increasing, PPI is more and more high, human eye obvious leakage occurs Situations such as inspection, false retrieval, cause detection reliability low, the situation examined again and recheck increases, so as to increased dispatching from the factory for each module Time, improve production cost.A kind of invention device is needed for this can be examined to module automatically on module production line Survey, it is to avoid the shortcoming of manual detection.

And in above-mentioned detection, do not occur accurate testing equipment appearance also for the specific test of display module, The testing cost of display module of the prior art is caused to consume big, or even the inspection in the detection of some special environmental requirements Survey testing cost especially high, and operate sufficiently complex.

The content of the invention

For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of figure for display module detection As display detection means and its detection method, the technical problem of complex operation of the prior art is thus solved.

To achieve the above object, according to one aspect of the present invention, there is provided a kind of image for display module detection Display detection means, it is characterised in that the device includes following part：

With the sealing mechanism for input and output display module to be detected, carrying is provided with the sealing mechanism described The delivery platform of display module to be detected, is provided with a movement detection image harvester to described to be checked on the delivery platform Surveying display module carries out detection image collection.

Further, it is distributed to be provided with described image display detection means and is surveyed for receiving drive signal and sending detection The detection control transceiver of test result.

Further, the delivery platform both sides are provided with fastener and fix the display module to be detected.

Further, described image display detection means is led to more with the multichannel PG boxes being arranged at outside the sealing mechanism and Road display machine connection.

Further, the sealing mechanism is made by the material of shielding electromagnetic interference.

Further, the flowing water platform in described image display detection means is ring-shaped platform or linear multiple-limb Type platform.

Further, the section of the fastener is L-shaped.

Further, module image signal connector and power supply connector are provided with the fastener.

Present invention also offers the detection method that a kind of image shows detection means, it is characterised in that the method is mainly wrapped Include following steps：

Described image display detection means receives detection instruction and opens entrance door；

When the display module to be detected of the delivery platform in it has expired, inlet seal door is closed, form sealing；

Light the display module to be detected；

Described image display detection means carries out the configuration of corresponding test environment automatically；

Start the mobile image acquisition device motion, the picture signal of each display module is gathered one by one.

Further, the module that outlet completes test is opened after all of display module to be detected completes test Output.

In general, by the contemplated above technical scheme of the present invention compared with prior art, can obtain down and show Beneficial effect：

On the production line of display module, the automatic display image effect of high-volume display module that can be to producing The detection of fruit, will detect the module feeding products storage area of ok after detection is completed, and detect the module feeding substandard products storage area of NG, All detections only before operation is detected, detection original static to display are set by operator without manual control or intervention The detection time or number of times of image or dynamic image (video) and every image, the present invention are just pressed around these images in the detection It is required that being detected, the efficiency and accuracy of display module factory testing are improve, reduce the production cost of module, it is to avoid Manual detection and occur people's eyes tire easily, detect that inaccurate, speed is slow, the low all kinds of technical problems of reliability.

Wherein the present invention is especially embodied in following aspect relative to the advantage of prior art：

(1) device of the invention can detect to large batch of module automatically, without manual detection and reinspection, operator The image to be detected (or video), the detection time needed for each figure, the figure for being detected need to be only set before detection starts Number of times as shown in circulating, without manual intervention after startup, can will detect that the module of OK and NG is respectively fed to automatically Corresponding storage area；

(2) present invention is for the detection under different scenes and coordinates the use of streamline detection test and devises special Image display detection means, can carry out normal temperature detection and high/low temperature detection, every time detection one close shielding inspection Surveying interior is carried out, it is to avoid extraneous interference so that detection is more accurate, and above-mentioned image display detection means can be well It is integrated in flowing water line detector, the efficiency of automatic streamline wire type detection can be significantly increased；

(3) present invention is swept in a darkroom using two technical grade CCD line-scan digital cameras to the image of module displays Retouch, it can be seen that the display effect of each pixel, it is to avoid the caused detection error of external light source interference.By two cameras Image algorithm after imaging is passed through is processed, and can shoot apparent to the focusing of each pixel more precisely, reduces each camera institute The noise and sampling error of introducing, the analysis of image data after can obtain the RGB face that more accurately each pixel shows Colour and the brightness value of display.

The optical, mechanical and electronic integration that device of the invention is formed by each side such as machinery, electric, circuit hardware, image software Solution realizes the automation mechanized operation in display detection field, and realizes industry 4.0 in China's display testing field Strategic development.

Brief description of the drawings

Fig. 1 is the overall structure diagram of the display module detecting system realized according to the present invention；

Fig. 2 is the detection method flow schematic configuration diagram of the display module detecting system realized according to the present invention；

Fig. 3 is a kind of the whole of image display detection means in the display module automatic checkout system realized according to the present invention Body structural representation；

Fig. 4 is that the concrete structure of the one of which implementation method in the image display detection means realized according to the present invention shows It is intended to；

Fig. 5 is the display detection means in the display module automatic checkout system realized according to the present invention according to wherein one The testing process structural representation that individual embodiment is realized；

Fig. 6 is that the structure of the mobile image detection means in the display module automatic checkout system realized according to the present invention is shown It is intended to；

Fig. 7 is the structural representation of the one of which implementation method of the mobile image detection means realized according to the present invention.

Specific embodiment

In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.As long as additionally, technical characteristic involved in invention described below each implementation method Not constituting conflict each other can just be mutually combined.

As shown in figure 1, be a kind of overall structure diagram of the display module detecting system realized according to the present invention, wherein The overall structure mainly includes following part：

Detection main interface system, it is mainly including having what is operated display interface and test result picture is shown Computer, such as industrial computer, PC computers etc., it is extraneous to be examined with overall detecting system according to above-mentioned interface The operating interactive of survey；

The other detection main system also includes a master controller, its be mainly by work out detection program and control software come Realize the control of corresponding main system, while also realize the operation of corresponding detection object program, the present invention relates to Display module in, relate generally to following detection and pre-set parameter：

Before present invention detection, by setting of the operator on operation PC by top level control software to tested module, Including the image for showing or dynamic video, each image want continuously display time, the number of times of test original image circulation display, The tolerance Δ of the RGB color value shown by Gamma parameters, module pixel, module pixel intensity tolerance, module entirety Display brightness uniformity tolerance, module entirety Show Color tolerance, light leak allowed band, display flicker degree, height Environment temperature, humidity that temperature detector is surveyed etc..

Certainly, in the detection field of display module, the detection parameter that can be related to can be by the detection mode of programming To realize, will not be repeated here.

Detection main system of the present invention also includes flow-line equipment, and the flow-line equipment is mainly provided with display The device of the pipeline system of module, wherein some feeding portions are mainly included, and some flowing water corresponding with above-mentioned feeding portion Transmission line, also includes display module transmission switching device, when flowing water transmission between above-mentioned feeding portion and flowing water transmission line When the quantity of the display module on line reaches the quantity of system setting, automatically control and be sent to next flowing water transmission line, The like；

On above-mentioned flowing water transmission line, some image display detection means, the image detection device are also disposed with The main some display detection means for including successively, concretely normal temperature display detection means, high temperature display detection means and Low temperature display detection means, the display module on streamline sequentially passes through above-mentioned detection zone, realizes in relative set environment Under detection；

Wherein corresponding, on every flowing water after each detection zone, the display module only by detecting can just be sent Toward next detection zone, and not by showing the module of detection means, by being routed directly to detection after detection zone not by depositing Put area, only by all detection zones detect it is qualified after can just be sent to detection by storage area；

Wherein, further, on flow-line equipment, the drive signal input source of each display module is additionally provided with, And the test output signal collector of each display module, wherein above-mentioned drive signal input source and output signal collector Signal all by master controller control.

Certainly, above-mentioned drive signal input source can be arranged on flow-line equipment, by the fixed position of display module Come set the various modes such as drive signal input pin all can, these implementations can all be realized in the art, herein Repeat no more.

According to the detection main system that the present invention is realized, the operational control mode that it is mainly realized is as follows：

As shown in Fig. 2 substantially in accordance with display detecting system of the invention, mainly comprising the following steps：

Master controller starts flow-line equipment operation；

Transmission switching device starts counting；

Transmission switching device starts to be oriented to and switches；

Image display detection means starts detection.

Wherein more specifically, mainly including following details step：

(1) started by master controller and detected, wherein feeding portion starts for display module to be sent to each bar streamline biography first Line sending, the transmission switching device being arranged on this streamline transmission line is also also begun to flowing to streamline transmission by enabling signal Display module on line is counted, wherein the mode for counting is by radio-frequency technique, or image technique, or Quick Response Code Scanning technique can all be realized；

Specific control mode is as follows：To be measured module of the first transmission switching device then to sending into is counted, when being less than Image display detection means 1A is then sent to during equal to detection module sum every time, the second transmission switching dress is otherwise transferred to Put, the device is similarly so operated, next transmission switching dress will be transferred to beyond the module of display detection means total number measured Put N；

Further, the counting that transmission switching control module is realized includes each inspection being arranged on streamline transmission line Surveying area can take the number of display module of detection in；To realize more smoothly streamline detection, above-mentioned technology is concretely The maximum module number taken in first display detection means；

(2) after the module to be tested on every streamline transmission line reaches analog value, detection program is started, operation PC is then Detection parameter will be set to issue in the first display detection means, and original test image will be issued by each multichannel by the machine PG boxes, complete the parameter configuration after detection；

(3) when the first display detection means on every streamline transmission line completes detection and will be sent by the module for detecting Fed back in master controller after to next stage display detection means, the transmission that master controller is reinformed on corresponding streamline transmission line is cut Changing device re-enters new a collection of tested module and re-starts test.

Each switching device so circulation and each other coordinated manipulation, so, have produced on production line High-volume module then can in batches while detected, what production line can uninterruptedly pause produce module is examined Survey, so as to provide detection efficiency and shipment speed, also indirectly expand yield reduction production cost.

Further, the detection in display detection means of the invention is mainly by way of image detection, from cardon As the general principle of detection is：When a certain original image by module displays out when, with an industrial camera to the module institute The picture of display is taken pictures, then the image and original image in being taken a picture are contrasted, if both color, brightness etc. Parameter is all completely the same, then module is judged to OK modules by the detection, is otherwise NG modules.

As can be seen here, industrial camera is the critical component for realizing detection function of the invention, and industrial camera takes pictures effect (such as： The resolution ratio of camera, the definition taken pictures, imaging accuracy, to the factor such as photo-object color and the reduction degree of brightness) meeting Can conclusive influence have correctly reliably been completed on display detection.When carrying out display inspection to high-volume module on a production line During survey, during to reach most fast detection speed and correct reliable testing result, the detection operation of most preferable (or theoretic) Mode is that all one or several cameras of each piece of module in high-volume module compared with original image while being taken pictures, and is given Several phase functions that each module is taken pictures take (often in industry neck at present the display effect of each pixel of module The industrial camera commonly used in domain can once shoot a secondary two dimensional image i.e. frame picture, and such camera is referred to as area array cameras, But because the resolution ratio of high definition or ultra high-definition module is very high, thus the resolution ratio that area array cameras are taken pictures every time is also insufficient to greatly To the complete image that can be covered shown by all pixels of module, it is necessary to the collaboration of several area array cameras is completed), if module from Resolution ratio, the PPI of body are very high, then the indexs such as accuracy, definition, resolution ratio of being taken pictures to camera are also accordingly higher, That is, based under face battle array industrial camera use conventional at present, its camera quantity wants many, performance to want the height could to realize this hair It is bright.

Further, the display detection means in the middle of the present invention, the detection work that it is completed is as follows：When display is detected If it find that certain tested module has certain 1 in certain image detection or certain several display parameters does not lead to when device is detected Cross, then record its module numbering, detection time, test result, after detection all terminates, the mould of all test NG These relevant informations of group report master controller, and its result is then changed into test report form by behaviour by master controller Operator is shown to as PC to see, while starting the module that detection means exports detection OK and NG respectively.OK modules send into next stage Detection means is further detected that NG modules are then sent to not by module storage area.

Further, in the display detection means that the present invention is realized, main included type also includes height Gentle normal temperature detection, wherein high and low temperature, humidity are sent to display detection dress by manipulation PC computer interfaces by master controller Put.

After receiving corresponding order, display detection means first carries out alternating temperature operation before detection, i.e., normal by before Temperature rise/cool to tested high/low temperature environment temperature and humidity is detected that display module that is, to be tested exists again after for a period of time After test in display detection means will wait the temperature and humidity of all of parameter all to reach corresponding stable state, just start Test, in this case, it is ensured that the accuracy and reliability of test result, to avoid module caused by outburst surroundings change Situations such as display effect is affected or testing result error occurs occurs.After having detected again from test environment temperature drop/liter Gentle humidity to the module feeding next stage detection means of OK or being sent to what detection whole passed through after normal temperature and humidity again Storage area, NG modules are equally dealt into corresponding not by module storage area.

So after operation module to be measured that will then produce can it is continuous without interrupt detect NG and OK can be used as going out The module of factory's finished product, and inspection is rechecked without manual intervention and again, so as to improve the production efficiency of product, reduces production cost.

Sum it up, according to the automatic detection function of present invention realization, designed detection scheme must be accomplished：On the one hand High performance industrial camera is needed to use to ensure correct reliable display detection, on the other hand it is required that its overall expenses Can also there is detection efficiency higher to adapt to mass production line detection, but also to manipulate appearance in tolerance range Easily, it is stable, be easy to safeguard.

According to the display module detection method that one of embodiment of the invention is realized, mainly comprise the following steps：

STEP1:Detection instruction is started by the operation interface of PC computers；

STEP2:Master controller receives above-mentioned instruction, and drives feeding portion to treat toward conveying on the first streamline transmission line Test display module；

STEP3:Master controller starts each transmission switching device simultaneously, and sending streamline to each transmission switching device passes The quantity for taking display module in line sending；

STEP4:First transmission switching device is started counting up, and after satisfaction takes numerical quantity in, just realizes transmission direction Switching, display module is sent in the second transmission switching device, is entered on the second streamline transmission line by it；

STEP5：Each transmission switching device is started working successively, and the detection configured on its corresponding streamline transmission line shows The transmission of module；

STEP6:Meanwhile, display detection operation is performed on every streamline transmission line, wherein as follows：

STEP6-1:While corresponding switching device is realized switching, feedback signal transmission is in master controller, master controller On corresponding streamline transmission line first is driven to show that detection means is initially configured ambient parameter, wherein the ambient parameter is normal Temperature, at 25 °, humidity range is in 30%-50% to normal temperature temperature；

STEP6-2:When the first display detection means completes ambient parameter configuration, and reach predetermined ambient stable limitation After time parameter, automatic detection, the wherein detection method mainly include image detection, will be aobvious by what is detected after detection Show that module is sent to the second display detection means；The display module by detecting is not sent to detection and is not stored by area；

STEP6-3:After the first display detection means completes detection, feedback signal is in the biography on corresponding streamline transmission line Switching device is sent to start to receive display module to be tested；

STEP6-4:Wherein second display detection means when starting to receive the display module for passing through, just realize by master controller Configuration to its ambient parameter, the wherein ambient parameter are hot environment, and predominantly, at 85 DEG C, humidity is 80% for temperature；

STEP6-5:When all display modules by the first display detection means reach second shows detection means, the Two display detection means automatically begin to detection；The 3rd display detection means will be sent to by the display module for detecting after detection；Not Detection is sent to by the display module for detecting not stored by area；

STEP6-6:Wherein the 3rd display detection means when starting to receive the display module for passing through, just realize by master controller Configuration to its ambient parameter, the wherein ambient parameter are low temperature environment, and predominantly, at -40 DEG C, humidity is 0% for temperature；

STEP6-7:All tests on corresponding streamline transmission line are completed.

Wherein, in the above-described embodiments, to avoid failure, the quantity for taking display module in that can be set is slightly less than the The maximum that one display device can take in；

Also, the stability of test and the saving problem of test resource in the above-described embodiments, are taken into full account, to each Show that the ambient parameter configuration of detection means is optimized, indeed, it is possible to start configuration simultaneously also may be used.

Still further aspect, the display detection means of the display module realized according to the present invention, it can be conventional display Detection means, but in order to realize more excellent test, the invention allows for a kind of new display detection means, the wherein dress The primary structure put is as shown in figure 3, including following structure：

The closed chamber of import and export is provided with, the delivery platform of the carrying display module to be tested of interior, one or many is arranged at The individual image collection assembly taken pictures to display module to be tested along delivery platform；

As shown in figure 4, further, the display detection means also includes some drive signal output precisions, Yi Jiyong In the multi-tiled display detection machine being analyzed to the result that image collection assembly is gathered；

Further, the fastening group for needing display module picture signal connector and power supply connection is set on delivery platform Part；

Further, in the closed chamber, it is provided with and is communicated with master controller, receives drive signal and send and detect The detection control transceiver of test result.

Main construction form is the shielding cell structure of a closing, and the direction of foundation streamline transmission line opens up respectively There is the import and export door of display module to be measured；

The delivery platform of the display detection of display module is provided with the shielding cell structure, is provided with for holding on the platform Receive display module to be tested tested display module fastener, postponed in tested display module cloth on workbench, seal Close import and export door；

The detection control transceiver being arranged on platform communicates open detection with master controller；

After open detection, multichannel PG boxes send original drive signal to display module to be tested, and some multichannels show Show that detection machine receives the detection signal of display module, analyze and record the result of detection OK and NG, and the result is sent in inspection Observing and controlling transceiver, so as to be sent in main control generator terminal, master controller is detected according to the result of feedback from display When transmission out in device, it is sent to different detections respectively by transmission switching device and area is not passed through with detection by area.

According to implementation of the invention, display sensing chamber is a kind of sealing, the sensing chamber of maskable external disturbance, this Original mold group is not subject to extraneous electromagnetic interference then wherein, so as to show original image is directly impregnable, shows The image for showing can directly reflect the characteristic of module itself.

When a collection of module to be measured is fed to annular sensing chamber, (quantity of this collection of module is outdoor by display detection Transmission switching device examined control machine is conveyed into the present apparatus automatically, is the total of detected module in annular sensing chamber Number).When enter into the module to be measured of environment measuring room by annular delivery platform successively after being sent to the region specified one by one, should The Transfer pipe in sensing chamber and the external world is closed, so as to form a closed and shielding space.Detect laggard when module completes normal temperature Before entering the space and carrying out high/low temperature detection again, the space then changes temperature and humidity automatically, is pre-set with reaching operator High/low temperature detection environment temperature and humidity, certainly, as it was previously stated, the monitoring of environment in closed chamber not considered critical its Configuration mode, can there is more flexible configuration mode.

It is indoor in annular detection, after each tested module is admitted to designated area, respectively can inside and outside annular transfer station There is fastener to fix tested module, it is to avoid module occurs shaking or mobile so as to influence camera to take pictures effect in detection process And testing result.Fastener has certain interval when being sent into without tested module and transfer station between, to cause feeding sensing chamber Interior tested module smoothly can move to specified location in transfer station.

The section of the fastener of transfer station both sides is designed to L shape, to cause that mobile image acquisition device (inside has camera Take pictures) middle slip can be stuck in taken pictures effect without wobble effects.Fastener L lower half is higher than the thickness of tested module On the one hand degree, so can completely clamp to the module of various different-thickness, on the other hand be adopted prevented also from mobile image Acquisition means collide module in high-speed mobile or scratch module.

Containing module image signal connector and power supply connector in fastener on the inside of transfer station, when inner side fastener folder During tight module its connector can be connected automatically on the corresponding image of module, power supply interface (tested module in production, its figure Picture and power supply interface just with fastener in connector position and pin pin correspond get up, it is ensured that be not in cannot even The problem for connecing).The other end of inner side fastener is connected by holding wire with the multichannel PG boxes in face outside sealing detection room.Every PG Box and display detection machine have multiple passages, each passage one tested module of correspondence.

Further, above-mentioned display detection interior is additionally provided with environment and produces configuration device, to corresponding display detection The environmental testing configuration parameter of room is configured and is monitored the equipment of detection, wherein the major parameter for configuring be temperature and Humidity measurement.

As shown in figure 4, the method for testing of the display sensing chamber realized according to one of embodiment of the invention, mainly includes Following steps：

STEP1:Annular display sensing chamber receives the order of the open detection of master controller, opens inlet seal door；

STEP2:The sensor on annular display sensing chamber doorway automatically turns on the counting of the display module for entering, and treats that annular is aobvious When showing the display module of the indoor delivery platform of detection and expire, inlet seal door is closed, formed and sealed；

STEP3:Feedback signal is in master controller, master controller control power supply after the indoor equipment of annular display detection is in place Component and drive signal input module light display module；

STEP4:Annular display sensing chamber carries out the configuration of corresponding test environment automatically, and after waiting room homeostasis Signal is transmitted in into mobile image acquisition device again carries out detection preparation；

STEP5:Master controller sends enabling signal in mobile image acquisition device, and starts it and bring into operation；

STEP6:Mobile image acquisition device setting in motion on circular orbit, gathers the image of each display module one by one Signal, being transmitted in multi-tiled display detection machine carries out the output of testing result, and above-mentioned testing result is sent to main control generator terminal, Carry out real-time display output；

STEP7:Mobile image acquisition device after the detection for completing all of display module to be tested, feedback signal in Master controller, open outlet portal, complete test display module since above-mentioned door spread out of；

STEP8:After all of display module spreads out of from figure shows detection machine, feedback signal is sent in master controller, Master controller controls the display module on corresponding streamline transmission line to enter display sensing chamber；

Display sensing chamber on every streamline performs above-mentioned control method and realizes detection.

As shown in figure 5, the test side of the display sensing chamber realized according to image display detection means as shown in Figure 3 Method, mainly comprises the following steps：

STEP1:Display sensing chamber receives the order of the open detection of master controller, opens multiple inlet seal doors；

STEP2:The sensor on display sensing chamber doorway automatically turns on the counting of the display module for entering, and treats annular display inspection When the display module of the indoor all delivery platforms of survey has expired, inlet seal door is closed, formed and sealed；

STEP3:Display sensing chamber carries out the configuration of corresponding test environment automatically, and again will after waiting room homeostasis Signal is transmitted in mobile image acquisition device and carries out detection preparation；

STEP4:Feedback signal is in master controller, master controller control power supply module after the indoor equipment of display detection is in place Display module is lighted with drive signal input module；

STEP5:Master controller sends enabling signal in multiple mobile image acquisition devices, and starts it and bring into operation；

STEP6:Multiple mobile image acquisition device setting in motions on circular orbit, gather each display module one by one Picture signal, being transmitted in multi-tiled display detection machine carries out the output of testing result, and above-mentioned testing result is sent to main control Generator terminal, carries out real-time display output；

STEP7:Mobile image acquisition device after the detection for completing all of display module to be tested, feedback signal in Master controller, open outlet portal, complete test display module since above-mentioned door spread out of, while master controller control open Entrance door, the display module on corresponding streamline transmission line enters display sensing chamber；

Display sensing chamber on every streamline performs above-mentioned control method and realizes detection.

According to this kind of set-up mode, the test of the display module on more multiple pipeline can be realized, and notable can obtain Accelerate the flow efficiency of whole piece automatic inspection line.

Still further aspect, on automatic detection production line of the present invention, is especially carried out in detection means is shown Detection, under this environment, the collection to the image of display module is particularly important, and is the pass for judging display module performance Key index, and being used for of being used in the industrial circle at present high-performance area array cameras that high definition module takes pictures not only model, produce Amount is rare, and control is complicated, and expensive.

If present invention use ideal operation mode, its automatic detection device for manufacturing, its cost will be extremely high, Manipulation will be very cumbersome, and this will be difficult to bear for module factory man in use cost, very low can be difficult in service efficiency Large-scale pipeline production is adapted to, therefore, it is mobile the invention allows for one kind to coordinate the use of the streamline in the present invention Display image collecting device, is particularly suited for the automatic detection device of the display module of present invention realization.

There is an image mobile collection that can do annular movement around the platform module to fill above annular delivery platform Put, inside there is camera to be taken pictures to tested module, in detection, the device is moved above module, side movement, while from each The original position of module starts to take pictures, then always postpone the end position for moving to the module when stop taking pictures, and taking pictures Image and module numbering are sent in corresponding multi-tiled display detection machine by way of being wirelessly transferred and compared with original image To detect module displays effect.Because in each module displays image, camera is continuous to the every one-row pixels institute of the module Display effect is taken pictures one by one, is an extremely fine, accurate process, in order that obtain the process of taking pictures can accurately smoothly achieve, Must assure that camera is not influenceed by image collecting device Mechanical Moving, such as vibrations, collision, impact, translational speed or movement Direction change caused by burst bobbing or displacement etc., be that this harvester can only do when mobile and at the uniform velocity move, but because For the repetition that each module will carry out multiple images shows, and in order to improve detection efficiency, each module can be cut in a short time Different images are changed to, so that the high speed for allowing image collecting device to do annular is at the uniform velocity moved, so as to be followed in shorter time Ring it is reciprocal detection of taking pictures is carried out to each module.

It is particularly noteworthy that the present invention is image detection without the test format commonly used in other industrial circles is used Device/photographing camera is maintained static, but transfer station moves the module of display image, passes sequentially through camera to take pictures；Be because For the received image signal and the PG boxes of power supply that will be arranged on the delivery platform in display detection means are also moved together, meeting Causing mobile carrier device structure becomes complicated, easy break-down, reliability reduction；It is mobile and transfer station apparatus structure is huge Speed is slower, directly increases the detection time of each module, reduces detection efficiency；Simultaneously because transfer station is all large-scale transmission Mechanical composition, its moving displacement and speed are difficult to precise control, the module for being sent to shot region can be caused to stablize and moved, Influence whether the accuracy taken pictures, it is difficult to see the actual effect that each pixel shows on module clearly.

Mobile detection image harvester changes into after special image data the module displays effect photo for taking again with nothing The form of line data communication is sent to detection control transceiver.And in annular sensing chamber, on the locular wall of its inner ring It is even it is intensive be dispersed with several receiving and transmitting signal antennas, this causes no matter mobile image acquisition device moves to annular region No matter any position, also moved with speed how soon, and the wireless signal of its picture image data for being sent can indifference rapidly Wrong detected control transceiver is obtained and carries out display detection by timely feeding display detection machine.

The structure chart of mobile detection image harvester is shown in Fig. 6.The integral core structure of the device mainly includes following two Big components of system as directed, one is the overall mechanical structure on mobile detection image harvester, furthermore is exactly to be examined on mobile Various types of signal control device and various kinds of sensors device in altimetric image harvester etc..

Detection image harvester is wherein moved on the composition of mechanical aspects, is mainly included：

Actuating unit, motion, these parts of image acquisition areas packaging mechanism, wherein actuating unit are to solve the shifting Dynamic detection image harvester is how to realize the movement along display module track, wherein either using motor powered motion Or other forms, substantial actuating unit all can be by the way of external, such as before being arranged at image acquisition areas Side, using mechanically connect it is dilatory by the way of come realize driving can also, according to the set-up mode of this separate type, can be significantly The moving mass of image acquisition areas is reduced, the stability of IMAQ is improved.

What wherein motion generally referred to the mobile collection device can drive detection image harvester to realize The mechanical structure of motion can meet condition, for example, set the roller type of track, straddle-type, as long as mobile fortune can be supported Dynamic part, in the device of the detection image mobile collection that may be provided at present invention realization, certainly, above-mentioned motion will It is primary to ensure mobile steady stability, so as to the stabilization collection to image provides Reliable guarantee.

In addition, mostly important is exactly image acquisition areas, the mostly important mission of the movement detection image harvester is just Being the display image to display module is acquired such that it is able to realize corresponding detection, harvester to display module Move to when being detected above corresponding display module, can be as well as possible the good image capture environment of formation, Veiling glare for example to surrounding is blocked, and forms the collection environment of closing, and also should have the image compared with reasonable Arrangement The setting of camera is gathered, be ensure that under which kind of mode and collected quality image higher.

Wherein the signal and processing unit of the movement detection image harvester mainly include following crucial core component：

Damping stabilizing mechanism, the i.e. mechanism ensure the stability of IMAQ；

The accurate location detent mechanism of display module to be tested, i.e. mobile device stops under what circumstances, is exactly aobvious Show that the correct position of module starts the collection shoot function of image after being stopped, the realization of usual this positioning method can be adopted Position is determined with the technology of radio frequency reading, while to be set around display module that the positioning of its test position can be reflected Part aids in determining moving the correct position whether detection image harvester is located at display module that the technology of positioning is main Positioning precision and the ornaments position of high-definition shooting camera according to collection image determined to weigh, and has no strict limitation.

Acquisition control equipment, it is primarily related to how to process the image of the display module of Real-time Collection, is Anticipated in real time, or by send to master controller processed all can, it is main or consider device motion institute The weight and the mode without loss preservation and transmission reliable to data of driving is needed to be configured.

According to one of which embodiment of the invention, there is provided one of which compares the mobile detection image collection dress of optimization The overall structure put, wherein as shown in Figure 7：

Motor transmission mechanism is really a dolly for driven by power, drives other parts uniform motion forward together.Should Dolly in order to larger load and stable running status, using structural form identical with railroad train wheel wheel and Track, its middle orbit is built on the support frame of transfer station both sides, and dolly is also adopted by the power supply mode of similar electrification train, that is, exist Dolly middle upper part frame there is the power supply rail of to provide whole image harvester needed for direct current, dolly prolonged by top The pantograph stretched out obtains direct current, and by wheel rail is used as power supply earth-return circuit.

In order to steady reliable, without friction or swing for a long time can be traveled at the uniform speed on straight way and bend, dolly is adopted With four-wheel independent suspension and type of drive, refer to specifically：Each wheel is individually straight with new controllable torque Stream brushless electric machine come directly drive operating (complex mechanical structure traditional so as to eliminate transmission case, speed changer, differential mechanism etc., Eliminate thus bring low speed, underneath drive efficiency, the problems such as vibrate greatly), have respective speed probe on each wheel, with Current transient speed is perceived, changes its output torque by changing motor working current, and then change turning for each wheel Speed.Each wheel be its corresponding drive device respectively by respective vertical suspension damper, damper, anti-crawl Shock absorber is connected on car body.

Vertical suspension damper may be such that car body and other parts avoid being influenceed by wheel operation natural resonance；Turn to Shock absorber can force wheel to avoid being forced to shimmy phenomenon because of centripetal force when turning, and prevent sideslip even overturning problem； Anti-hunting damper holder can prevent dolly in high speed is advanced because of unstable the occurred wheel picture of contact between wheel hub and rail Snake it is the same left and right twisting situation and cause car body seriously to rock situation (in traveling, no matter car body occur what kind of vibration Or swing, influence whether image photographic effect and accuracy).

Specifically, the motor used by each wheel is a kind of controlled brshless DC motor, with small volume, operating vibrations Low, speed governing response is fast, moment of torsion is big, the features such as can for a long time rotate simple constant, control, reliable operation, four motors of wheel By producing respective drive electric current to operate in IMAQ and mobile control device.In order to improve this IMAQ The more stable high-speed mobile of device is also equipped with two dimension acceleration inductor on straight way or bend in the central spot of car body (can sense the acceleration magnitude in front, rear, left and right direction), and the speed of vehicle detector of each wheel is used for adjusting wheel together Transient speed, when dolly is when at the uniform velocity travelling, the tachometer value of each wheel is sent in image detection and mobile control device It is monitored, when certain wheel is because of certain reason rotating speed suddenly change, (frictional force such as certain section track to certain side is big When other sections, wheel is constant due to power of motor, and the vehicle wheel rotational speed on its siding track can be caused when running at this Moment declines suddenly；Or rail friction not enough, cause wheel run at this occur slippery conditions i.e. vehicle wheel rotational speed moment dash forward So increasing) such case can cause that vibrations or swing situation occurs in whole harvester, have influence on the IMAQ of camera, be This, when the mutation for detecting this rotating speed, the driving current that can at once control corresponding wheel motor is motor operation to control device Power is increasedd or decreased so that its moment of torsion becomes big or diminishes, and so as to by the reverse increasing of rotating speed or decrease back to normal value, is come Ensure whole device even running.When because of certain reason dolly, acceleration or deceleration is moved forwardly, two dimension acceleration sensing The direction of the acceleration and size can be fed back to mobile control device by device, and the equipment according to the acceleration and can combine current vehicle The rotating speed of wheel calculates a new rotating speed increase and decrease amount, drives each wheel to return on rated speed by respective motor.When Dolly is in when turning, and acceleration induction device can measure turn direction and centripetal force acceleration magnitude, and mobile control device Can learn which side of car wheel is that, in turning medial, which side is outside of turning, according to cadion-acceleration according to turn direction Degree size calculate inner side and outer side vehicle wheel vehicle speeds and by respective motor come drive control (due to by centripetal force during turning Effect, inboard wheel speed is low, and outboard wheels speed is high, and both are different, if on the basis of the speed of dolly central point, in that The vehicle wheel vehicle speeds of side are that center speed subtracts a variable quantity, and the vehicle wheel vehicle speeds in outside to be center speed change plus this Amount).

IMAQ damping stabilising arrangement is connected to below trolley, the device can further eliminate trolley travelling When various vibrations and displacement so that IMAQ connected below and control device and camera shoot darkroom not taken office What influences, on the center line all the time in whole device and screen, so that the carrying out that IMAQ operation can be reliable and stable, really Protect the accuracy of collection of taking pictures.Damping stabilising arrangement pass through before and after damper, left and right damper, upper and lower damper and above small Car is connected, and following acquisition control equipment is then directly connected with it, it is internal be equipped with a high-precision micro electromechanical gyroscope, one Microprocessor CPU and the stabilization control device being connected with damper, all around upper and lower three can be perceived by gyroscope The vibrations of dimension all directions, after having certain vibrations to produce, the vibration displacement direction and size that gyroscope will be perceived are informed CPU, CPU are again by being calculated the side-play amount of stabilization, then control the damper of the direction to do upstream shift, direction and size with Vibrations are opposite and equal, so as to offset the influence of vibrations, a stabilization reponse system constituted, so that IMAQ can keep It is motionless at the over center position.

Truly can accurately reflect the actual displayed effect of each pixel of module to take pictures, while again of the invention to reduce Overall use cost, present invention uses two technical grade ultrahigh resolution CCD, progressive scan RGB line array camera is parallel at a high speed Taken pictures simultaneously, unlike this camera and common area array cameras are taken pictures：The camera is a line taken pictures only to module every time Pixel is scanned, and the view data of a line is produced every time, then is processed by later image and each row of data is integrated carried out shape Into the image that a width is complete.The camera has sufficiently high resolution ratio, can clearly photograph the every of 4K even 8K resolution ratio modules The actual displayed color of one R, G, B single pixel and brightness, by the at the uniform velocity advance of dolly during shooting, so as to scan module Often row pixel, the camera is higher than general industry camera cost, but lower than the industrial camera of identical shooting resolution ratio.Use Two this cameras are taken pictures, and by the image procossing in later stage, can obtain the data of apparent accurate each pixel of image.

Have two line-scan digital camera special light sources by camera, when the brightness of the image of module displays do not reach camera take pictures it is minimum Light illumination when, then light source open auxiliary photo-taking.Camera surrounding forms a darkroom of taking pictures, so as to avoid extraneous light source Interference effect is taken pictures effect.Because harvester has a fixed gap in order to avoid breaking module, between bottom of device and module, it is Darkroom bottom light leak is avoided, darkroom is used H-shaped front and back panel, covered using IMAQ shading strip in the groove of H-shaped Module surface, the shading strip surface uses smooth resilient material such as silk, non-woven fabrics etc., and inside is using soft flexible Material such as sponge, silica gel etc., can so seal lighttight covering on module will not scratch module again.

In echelon, bottom is stuck in the chute inside fastener the left and right gusset in darkroom, there is lighttight profit between the two In order to movement, can reinforce harvester structure prevents impact, and the darkroom that will can take pictures to be fixed to directly over module and prevent to lubricating oil Only skew causes that phase function is firm and takes pictures.The shell of IMAQ mobile control device is covered by fin, and inside uses handkerchief You paste refrigeration effect to maintain IMAQ, mobile control, camera to be in the constant environment of normal temperature, it is to avoid because of operational heat or temperature Degree change causes the problems such as signal drift, distortion.

Certainly, it is above-mentioned simply enumerated in the mobile detection harvester realized according to the present invention a kind of compare optimization Configuration mode, certainly, specific structure is not strictly defined as above-described embodiment, as long as be that by above-mentioned movable type adopting Collection, and with the harvester of foregoing core component, be all contained within protection scope of the present invention.

In addition, even more noteworthy, above-mentioned dolly is the frame mode using integrated monoblock type, actual to implement During, integral type is not strictly defined as, except the darkroom of IMAQ is needed in display module in real time one by one Correspond to outside docking, remaining such as signal transacting, the part such as power drives may be configured as separate type, and above-mentioned separate type can To be the separate type that drives on the identical track, or on the different track of design carry out powered motion simultaneously Separate type, specific form is not repeated herein.

Wherein, the mobile detection image harvester realized according to the present invention, the process of image display detection is according to as follows Mode carry out：

When operator has configured detection image and coherent detection parameter, and all tested modules enter sensing chamber and fasten Afterwards, detection control machine wirelessly starts harvester operation, and the device then progressively accelerates movement from halted state, until Then carry out annular movement around module or enter along linear detection track at the uniform velocity moving after required speed Row motion；

Respectively there are 2 module original position infrared transmitters and the infrared transmission of module end position on each clamping bench Device, and mobile collection device also has corresponding Infrared Detectors, and first module original position infrared transmitter, other moulds Group original position infrared transmitter, module end position infrared transmitter transmitting infrared wavelength it is all different, be beneficial to movement and adopt Acquisition means are recognized.

In order to each picture of each module can again be detected after the same time, then using following control mode reality Apply：

When harvester for the first time by first display module original position when, then by wireless signal by tested module Numbering and detection state (starting to gather image) are dealt on detection image signal bus, and now, all of PG boxes and detection machine are equal Receive the information, but the respective channel of only corresponding PG boxes (passage 1 of such as PG boxes 1 corresponds to module 1；2 pairs, the passage of PG boxes 1 Module 2 should be arrived；……；The passage n of PG boxes m corresponds to module x) startup modules 1 and is allowed to display image A；Likewise, harvester Move to module 2 then to send the corresponding numbering of the module and start to gather the signal of image, so transported within first week when harvester After having gone, all modules show image A.

When harvester then proceeds by the pixel dispaly state of scanning module of taking pictures, one when for the second time by module 1 While taking pictures while the view data of taking pictures to be formed that will take pictures wirelessly is sent on detection image signal bus, and is corresponded to The detection machine of passage then receives its image A data, and (corresponding PG boxes have told detection by detecting control signal before this Picture number shown by machine) signal for leaving module 1 is then sent when harvester leaves module 1, the signal is schemed in detection Image B is then switched to after as being received by PG boxes 1 in bus, while carrying out same collection and hair on harvester movement module 2 Do well information.And corresponding PG boxes then after signal is received on module 2 display image B, corresponding detection machine is then received adopts The data of collection.After the second circle terminates, harvester is into starting to take pictures image B shown by each module after the 3rd circle.

So each display module can be collected after a certain image display identical time, it is ensured that the module working time Upper to keep identical, i.e. the time of each width picture of module displays one is the time of the circle of detection means circulation one, if wanting to reduce every width Picture display time then needs to improve the translational speed of harvester, otherwise then reduces speed.

If detecting that dynamic image (video) operating process is identical, but the speed for improving harvester is needed to protect Demonstrate,prove in every frame picture of module displays video, harvester can scan through the pixel of all display lines of module, and (video is generally 24 Frame is per second, i.e., harvester needs to scan through piece image in 1/24 second).

If being gathered by the data of altimetric image using such as two cameras of multiple cameras, when two cameras are by mapping When being received by the image detection machine of respective channel in detection image bus by wireless mode as data, image detection machine difference The display data splicing of each row pixel that two cameras are scanned is integrated into the corresponding width complete picture of respective camera, And the clear area of the noise on picture and non-picture is removed, the simple picture of module displays is formed, afterwards again by two cameras Picture synthesizes piece image and carries out the skills such as image focusing process, filtering, chroma-luminance recovery by digital image processing techniques The more accurate true, image without noise noise of a width is formed after art treatment, the actual information of module displays, Zhi Houzai is restored By this image often row each pixel R, G, B color component and brightness, and whole image Luminance Distribution State Transferring Be quantized into corresponding numerical value, to be compared one by one with original image, measured parameter, the mould of OK is considered if all identical Group, then report the numbering of the detection control machine OK modules, is then otherwise NG modules, reports the numbering of the detection state machine NG modules With detection numerical value, comparing result.

After the completion of all modules are all detected in sensing chamber, harvester is then traveled at the uniform speed, and detects control machine then Control transfer station takes out each module, and informs OK/NG modules transmission switching device which module feeding subsequent processing, which mould Not by storage area, after all being emptied in sensing chamber, detection state machine then continues the display module outside control to group feeding Transmission switching device is re-fed into the tested module of next group, is repeated above-mentioned detection operating process.

According to the implementation method in the above embodiments, can be by the detection means of the display module in the present invention, display Detection means and mobile image acquisition device combine, and constitute overall automatic checkout system, enable in particular to improve this hair The accuracy and raising Detection results of bright detection.

As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, it is not used to The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should include Within protection scope of the present invention.

Claims (10)

1. a kind of image for display module detection shows detection means, it is characterised in that the device includes following part：

With the sealing mechanism for input and output display module to be detected, carrying is provided with the sealing mechanism described to be checked The delivery platform of display module is surveyed, a movement detection image harvester is provided with the delivery platform to described to be detected aobvious Show that module carries out detection image collection.

2. the image for being used for display module detection as claimed in claim 1 shows detection means, it is characterised in that described image The detection that distribution is provided with for receiving drive signal and transmission detection test result in display detection means controls wireless receiving and dispatching Machine.

3. the image for being used for display module detection as claimed in claim 1 or 2 shows detection means, it is characterised in that described Delivery platform both sides are provided with fastener and fix the display module to be detected.

4. the image for being used for display module detection as claimed in claim 3 shows detection means, it is characterised in that described image Display detection means is connected with the multichannel PG boxes and multi-tiled display machine that are arranged at outside the sealing mechanism.

5. the image for being used for display module detection as claimed in claim 4 shows detection means, it is characterised in that the sealing Mechanism is made by the material of shielding electromagnetic interference.

6. the image for being used for display module detection as claimed in claim 5 shows detection means, it is characterised in that described image The flowing water platform in display detection means is ring-shaped platform or linear multiple branch platform.

7. the image for being used for display module detection as claimed in claim 6 shows detection means, it is characterised in that the fastening The section of part is L-shaped.

8. the image for being used for display module detection as claimed in claim 7 shows detection means, it is characterised in that the fastening Module image signal connector and power supply connector are provided with part.

9. the image in a kind of 1-8 such as claim described in any one shows the detection method of detection means, and its feature exists In the method mainly comprises the following steps：

Described image display detection means receives detection instruction and opens entrance door；

When the display module to be detected of the delivery platform in it has expired, inlet seal door is closed, form sealing；

Light the display module to be detected；

Described image display detection means carries out the configuration of corresponding test environment automatically；

Start the mobile image acquisition device motion, the picture signal of each display module is gathered one by one.

10. image as claimed in claim 9 shows the detection method of detection means, it is characterised in that described treated when all of Unlatching outlet exports the module that test is completed after detection display module completes test.