CN106803410A - LED display module testing equipment - Google Patents
LED display module testing equipment Download PDFInfo
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- CN106803410A CN106803410A CN201510836368.6A CN201510836368A CN106803410A CN 106803410 A CN106803410 A CN 106803410A CN 201510836368 A CN201510836368 A CN 201510836368A CN 106803410 A CN106803410 A CN 106803410A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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Abstract
The present invention relates to a kind of LED display module testing equipment, including：Transmission track system, for transmit LED display module and including inspection before holding fix, image detection position, inspection after holding fix and correction coefficient writing position；Sensing chamber, for providing dark room conditions and image detection position position in the inner；Image detection chamber, is arranged on detection interior and including transmittance section, speculum and detection means；And scanning means, the LED display module of image detection position and correction coefficient writing position is sent to for recognizing.Therefore, the present invention can automatically complete the qualification detection of LED display module such as LED lamp panel and correct brightness or the bright chroma of LED lamp panel automatically, easy quantization higher than existing manual detection method accuracy, substantially increase efficiency and save cost of labor；Also, as a result of reflective mirror, it can shorten device height, to the further reduction of requirement on height of workshop.
Description
Technical field
The present invention relates to technical field of LED display, more particularly to a kind of detection of LED display module
Equipment.
Background technology
A kind of flat panel display equipment that LED display is made up of LED dot matrix, with the sector
Fast development, LED display is widely applied to each occasion of daily life, with brightness
Scope is adjustable, safety and environmental protection, energy saving, bright in luster, visual range is big, content is clear etc.
A series of advantages, compared to other traditional information mediums, its content is easily updated, with low cost,
It is ageing good, while distinct smooth colored moving frame is easier to attract the eyeball of people, in letter
There is the incomparable advantage of other media in the display and propagation of breath.
LED display needed before dispatching from the factory detect LED lamp panel qualification, for example detect dead lamp,
The undesirable LED of bright light long, bright chroma, and need to detect that the entirety of LED lamp panel is bright
Colourity absolute value, uniformity.
Existing LED lamp panel detection is, according to the experience of oneself, to lead on a production line by producing line workman
Cross the patterns such as the red, green, blue of every piece of LED lamp panel of eye-observation and judge whether dead lamp, bright light
Etc. abnormal conditions, underproof LED lamp panel is then sent to maintenance shop, qualified LED
Plate feeding correction workshop uses the bright chroma of every lamp of camera calibration.
Because this process needs producing line workman only to judge whether monolithic LED lamp panel accords with by personnel
Close and require, there is very big error.Such as human eye can only see and whether there is in monolithic LED lamp panel
Dead lamp, normal bright light, and LED lamp panel uniformity cannot be judged, between LED lamp panel and LED lamp panel
Bright chroma difference.On the other hand, manual detection efficiency is low, it is difficult to adapt to quickly large quantities of
Amount production needs.
The content of the invention
Therefore, it is of the invention to propose a kind of LED to overcome defect present in prior art and deficiency
Display module testing equipment.
Specifically, a kind of LED display module testing equipment that the embodiment of the present invention is proposed, including：
Transmission track system, for transmit LED display module and including inspection before holding fix, image detection
Holding fix and correction coefficient writing position after position, inspection；Sensing chamber, for providing dark room conditions
And described image test position is located at the detection interior；Image detection chamber, is arranged on the detection
Indoor and including transmittance section, speculum and detection means, the detection means is used for from the inspection
Preceding holding fix be sent to described image test position LED display module carry out image detection with
Obtain view data for judge completed image detection LED display module it is whether qualified and
The lamp point calibration coefficient of qualified LED display module is calculated, wherein carrying out described image detection
The image that Shi Suoshu LED display modules show is through the transmittance section and anti-via the speculum
It is incident upon the detection means；And scanning means, transmitted from holding fix before the inspection for recognizing
To described image test position with receive image detection LED display module and identification from described
Holding fix is sent to the correction coefficient writing position to receive the write-in of lamp point calibration coefficient after inspection
LED display module.
In one embodiment of the invention, described image test chamber include the first image detection chamber and
Second image detection chamber, the detection means of described first image test chamber is image collecting device,
The detection means in the second image detection chamber is bright chroma meter.
In one embodiment of the invention, the quantity of described first image test chamber is multiple, often
One described image test chamber correspondence one described image test position and a scanning means.
In one embodiment of the invention, the multiple first image detection chamber and second figure
As the speculum of each in test chamber is that the monolithic being oppositely arranged with the detection means reflects
Mirror.
In one embodiment of the invention, described first image test chamber and second image are examined
The quantity for surveying chamber is one, in described first image test chamber and the second image detection chamber
The reflective mirror of each is monolithic speculum or polylith arrangement of mirrors.
In one embodiment of the invention, described image test chamber and described image test position
Quantity is one, and the detection means of described image test chamber is included along the transmission track
The direction of transfer distribution of system and the bright chroma meter and image that are movably disposed at the top of the sensing chamber
Harvester.
In one embodiment of the invention, the detection means is used to gather red image, green
Image, blue image and white line image.
In one embodiment of the invention, the speculum is to be oppositely arranged with the detection means
And the monolithic speculum that position is fixed, for the list will be directly incident on through the transmittance section
The image of block speculum directly reflexes to the detection means.
In one embodiment of the invention, holding fix is located at the detection interior before the inspection,
It is outdoor that the correction coefficient writing position is located at the detection.
In one embodiment of the invention, the LED display module testing equipment also includes constant temperature
Device, is arranged on the detection indoor.
From the foregoing, it will be observed that the embodiment of the present invention can automatically complete LED display module such as LED
The brightness of the every LED lamp in the qualification detection of lamp plate and automatically correction LED lamp panel or light tone
Degree, this automatic mode is higher than existing manual detection method accuracy, easy quantization, greatly improve
Efficiency simultaneously saves cost of labor；Also, as a result of reflective mirror, it can shorten equipment
Highly, to the further reduction of requirement on height of workshop.
By the detailed description below with reference to accompanying drawing, other side of the invention and feature become obvious.
It is understood that the accompanying drawing is only the purpose design explained, not as model of the invention
The restriction enclosed.It should also be noted that unless otherwise noted, it is not necessary to scale accompanying drawing, they
Only try hard to conceptually illustrate structure described herein and flow.
Brief description of the drawings
Below in conjunction with accompanying drawing, specific embodiment of the invention is described in detail.
Fig. 1 is that the framework of the LED display module testing equipment that first embodiment of the invention is proposed is illustrated
Figure.
Fig. 2 is that the framework of the LED display module testing equipment that second embodiment of the invention is proposed is illustrated
Figure.
Fig. 3 is that the framework of the LED display module testing equipment that third embodiment of the invention is proposed is illustrated
Figure.
Specific embodiment
To enable the above objects, features and advantages of the present invention more obvious understandable, with reference to
Accompanying drawing is described in detail to specific embodiment of the invention.
【First embodiment】
Referring to Fig. 1, the LED display module testing equipment that first embodiment of the invention is proposed includes：
Transmission track system 11, sensing chamber 13, image detection chamber 130,132,134,136 and scanning
Device 14a-14e；And preferably also include thermostat 15.
Wherein, transmission track system 11 can transport simultaneously LED display module such as LED lamp panel
Specified location is fixed to, is for example equipped with its track (such as conveyer belt) and is gone up electric, upper signal automatically
Device reaches specified location normal work to ensure LED display module.It is understood that transmission
Rail system 11 is additionally provided with PLC (Programmable Logic in addition to including track, typically
Controller, programmable logic controller (PLC)).Furthermore, can be learnt from Fig. 1：Transmission track system
11 are configured with holding fix after the preceding holding fix 110 of inspection, image detection post-11.2 a-112d, inspection
114 and correction coefficient writing position 116.
Sensing chamber 13 is used to provide dark room conditions, its be, for example, shell structure and inner surface be coated with it is low
Reflective materials, to ensure that image-detection process does not receive external interference.In Fig. 1, waited before examining
Position 110, image detection post-11.2 a-112d and inspection after holding fix 114 be located at sensing chamber 13
It is interior, and correction coefficient writing position 116 is located at outside sensing chamber 13.
Image detection chamber 130,132,134,136 is arranged in sensing chamber 13 and each includes
Transmittance section 17, reflective mirror 19 and the detection means such as IMAQ being oppositely arranged with reflective mirror 19
Device 16a-16c or bright chroma meter 18.Furthermore, from Fig. 1 it is known that image detection chamber 130
Overlapped in the height direction with 132 and respective transmittance section 17 is mutually staggered；Similarly, image inspection
Survey chamber 134 and 136 overlaps in the height direction and respective transmittance section 17 is mutually staggered.
More specifically, for image detection chamber 130, its detection means be image collecting device for example
Camera, its transmittance section 17 is, for example, glass plate and positioned at the surface of image detection post-11.2 a,
Its reflective mirror 19 is monolithic speculum and is fixed in image detection chamber 130, so that positioned at image inspection
The image that the LED display module that location puts 112a shows such as green image can pass through transmittance section
17 and 90 degree via reflective mirror 19 reflex to image collecting device 16a and be collected.For figure
As test chamber 132, its detection means are bright chroma meter 18 (being commonly called as light gun), its transmittance section 17 is for example
It is glass plate and positioned at the surface of image detection post-11.2 b, its reflective mirror 19 is monolithic reflection
Mirror and it is fixed in image detection chamber 132, so as to show positioned at the LED of image detection post-11.2 b
Show that red, green and blue image that image that module shows for example shown according to preset order can be with
90 degree through transmittance section 17 and via reflective mirror 19 reflex to bright chroma meter 18 and are collected.
For image detection chamber 134, its detection means is image collecting device such as camera, its transmittance section
17 is, for example, glass plate and positioned at the surface of image detection post-11.2 c, and its reflective mirror 19 is single
Block speculum and it is fixed in image detection chamber 134, so that positioned at image detection post-11.2 c's
The image that LED display module shows such as red image can be through transmittance section 17 and via reflective
90 degree of mirror 19 reflex to image collecting device 16b and are collected.For image detection chamber 136,
Its detection means is image collecting device such as camera, and its transmittance section 17 is, for example, glass plate and is located at
The surface of image detection post-11.2 d, its reflective mirror 19 is monolithic speculum and is fixed on image
In test chamber 136, so that positioned at the figure that shows of LED display module of image detection post-11.2 d
As such as green image can reflex to image through transmittance section 17 and 90 degree via reflective mirror 19
Harvester 16c and be collected.
Hold above-mentioned, image collecting device 16a, 16b, 16c are sent to corresponding image inspection for collection
Location puts 112a, and each image that the LED display module of 112c, 112d shows is to obtain every
The relatively bright chrominance information of LED point and then the show uniformity for improving LED display module；
Even preferably, one of image collecting device 16a, 16b, 16c are additionally operable to collection LED showing
For example white oblique line image of the white line image that module shows, white vertical line charting picture or white horizontal line
The even completely white image of image, whereby it can be detected that whether is LED point in LED display module
Puncture, the phenomenon such as short circuit；Or one is set up in addition with image collecting device such as phase
The image detection chamber of machine gathers the even completely white image of white line image.In the present embodiment, image
Harvester 16a, 16b, 16c can be with digital camera, slr camera, industrial cameras etc..
Additionally, bright chroma meter 18 can be filter disc type bright chroma meter, or spectrum-type bright chroma
Meter, the part that it is used to gather the LED display module for being sent to image detection post-11.2 b is absolute
Bright chroma information (or absolute value of the local average bright chroma of LED display module).The present embodiment
In, the absolute bright chroma information of the LED display module collected by bright chroma meter 18 can be with
Demarcated for the light tone angle value to each LED display module, to improve LED display module
Bright chroma difference and LED display module between.
Scanning means 14a, 14b, 14c, 14d respectively with image detection post-11.2 a, 112b, 112c,
112d is corresponding, for identification be sent to image detection post-11.2 a, image detection post-11.2 b,
The LED display module of image detection post-11.2 c and image detection post-11.2 d；Scanning means
14e is corresponding with correction coefficient writing position 116, and correction coefficient write-in is sent to for identification
The LED display module of position 116.In the present embodiment, scanning means 14a-14e is e.g. infrared
Scanner, naturally it is also possible to be other scanning means such as rfid interrogator.
Thermostat 15 is provided in sensing chamber 13, and it is used to provide a conjunction for sensing chamber 13
Suitable environment temperature is beneficial to lifting accuracy of detection.
The LED display module image for being applied to first embodiment of the invention is examined below in conjunction with Fig. 1
The detection method process of measurement equipment is described in detail：
(1) LED display module being loaded on the track of transmission track system 11 enters sensing chamber
Holding fix 110 is set with waiting image detection because sensing chamber 13 is interior before inspection is sent to after 13
Thermostat 15 is equipped with, therefore the temperature of the LED display module of holding fix 110 exists before inspection
The temperature with sensing chamber 13 reached in waiting process consistent, thereby may be ensured that LED shows mould
The temperature of block reaches desired value before image detection, so as to improve detection accuracy.
(2) LED display module is sent to image detection post-11.2 a from holding fix 110 before inspection,
Transmission track system 11 makes LED display module just to electric, upper signal in LED display module automatically
Often work, scanning means 14a is identified to LED display module, image collecting device 16a
As camera is made using the reflection of the light penetration and corresponding speculum 19 of corresponding transmittance section 17
The image shown with the LED display module for being pointed to image detection post-11.2 a is for example green (G)
Image is acquired and obtains view data and be sent to correction software, by correction software to collecting
Green image data is analyzed treatment.Herein, correction software is, for example, installed in personal computer
It is connected above and with image collecting device 16a-16c and bright chroma meter 18.
(3) LED display module is sent to image detection position from image detection post-11.2 a
112b, transmission track system 11 shows LED to electric, upper signal in LED display module automatically
Module normal work, scanning means 14b is identified to LED display module, (the custom of bright chroma meter 18
Claim light gun) made using the reflection of the light penetration and corresponding speculum 19 of corresponding transmittance section 17
Be pointed to the LED display module of image detection post-11.2 b according to preset order show it is red,
Green and blue image carry out local collection to obtain red, green, blue image three-colo(u)r data (for example respectively
The color light tone angle value of R, G, B tri-) and be sent to correction software and be analyzed.
(4) LED display module is sent to image detection position from image detection post-11.2 b
112c, transmission track system 11 shows LED to electric, upper signal in LED display module automatically
Module normal work, scanning means 14c is identified to LED display module, image collecting device
16b such as cameras using corresponding transmittance section 17 light penetration and corresponding speculum 19
The image that the LED display module that reflex is pointed to image detection post-11.2 c shows is for example red
Color (R) image is acquired and obtains view data and be sent to correction software, by correction software to collection
To red image data be analyzed treatment.
(5) LED display module is sent to image detection position from image detection post-11.2 c
112d, transmission track system 11 shows LED to electric, upper signal in LED display module automatically
Module normal work, scanning means 14d is identified to LED display module, image collecting device
16c such as cameras using corresponding transmittance section 17 light penetration and corresponding speculum 19
The image that the LED display module that reflex is pointed to image detection post-11.2 d shows is for example blue
Color (B) image is acquired and obtains view data and be sent to correction software, by correction software to collection
To blue image data be analyzed treatment.
(6) holding fix 114 after LED display module is sent to from image collecting device 112d and examines
Waiting Graph is as testing result.In waiting time, a) correction software continues to complete analysis of image data；
B) correction software judges that the LED of the holding fix 114 after inspection shows according to the result of data analysis
Whether module is qualified, for example, judge the dead lamp of LED display module, bright light long, light tone angle value,
Whether even property index meets the scope of setting, and qualified LED display module is waited and enters next link,
Unqualified LED display module by manually or mechanically hand, remove and tieed up by the holding fix 114 from after inspection
Repair；C) correction software according to image collecting device 16a-16c and bright chroma meter 18 collect it is red,
Green, blue image three-colo(u)r data (namely relatively bright chrominance information and absolute bright chroma information) calculate conjunction
The lamp point calibration coefficient of lattice LED display module, it is each in typically qualified LED display module
The brightness of individual LED point or bright chroma correction coefficient.
(7) qualified LED display module holding fix 114 from after inspection is sent to correction coefficient write-in
Position 116, transmission track system 11 makes to electric, upper signal in qualified LED display module automatically
Its normal work, scanning means 14e recognizes the ID of qualified LED display module, and correction software will
The corresponding qualified LED display module that the lamp point calibration coefficient write-in for calculating is recognized, for example, write
In entering the flash memory of qualified LED display module；Afterwards, what the write-in of lamp point calibration coefficient was finished is qualified
LED display module will be moved out of the track of transmission track system 11, and it can be by artificial shifting
Go out, it is also possible to removed using manipulator.
Hold above-mentioned, typically, each station parallel processing during above-mentioned detection method, for example before
One LED display module enters image detection post-11.2 a, and latter LED display module is simultaneously
Holding fix 110 before into inspection, by that analogy；During normal operation, holding fix 110, figure before inspection
As holding fix 114 and correction coefficient writing position 116 exist after test position 112a-112d, inspection
Synchronization has LED display module, and pipeline system operation is realized in each station concurrent working, because
And it is greatly improved operational efficiency.
【Second embodiment】
Referring to Fig. 2, the LED display module testing equipment that second embodiment of the invention is proposed includes：
Transmission track system 21, sensing chamber 23, image detection chamber 230,232 and scanning means 24a-24c；
And preferably also include thermostat 25.
Wherein, transmission track system 21 can transport simultaneously LED display module such as LED lamp panel
Specified location is fixed to, is for example equipped with its track (such as conveyer belt) and is gone up electric, upper signal automatically
Device reaches specified location normal work to ensure LED display module.It is understood that transmission
Rail system 21 is additionally provided with PLC (Programmable Logic in addition to including track, typically
Controller, programmable logic controller (PLC)).Furthermore, can be learnt from Fig. 2：Transmission track system
21 are configured with holding fix after the preceding holding fix 210 of inspection, image detection position 212a, 212b, inspection
214 and correction coefficient writing position 216.
Sensing chamber 23 is used to provide dark room conditions, its be, for example, shell structure and inner surface be coated with it is low
Reflective materials, to ensure that image-detection process does not receive external interference.In fig. 2, waited before examining
Position 210, image detection position 212a, 212b are located in sensing chamber 23, and holding fix after examining
214 and correction coefficient writing position 216 be located at sensing chamber 23 outside.
Image detection chamber 230,232 be arranged in sensing chamber 23 and each include transmittance section 27,
Reflective mirror 29 and detection means such as image collecting device 26 or bright chroma meter 28.Furthermore, from figure
2 it is known that image detection chamber 230 and 232 overlaps and respective transmittance section in the height direction
27 mutually stagger.
More specifically, for image detection chamber 230, its detection means be image collecting device for example
Camera, its transmittance section 27 is, for example, glass plate and positioned at the surface of image detection position 212a,
Its reflective mirror 29 is polylith arrangement of mirrors and is fixed in image detection chamber 230, so as to be located at figure
For example shown according to preset order as the image that the LED display module of test position 212a shows
Red, green, blue image can pass through transmittance section 27 and reflex to image via reflective mirror 29
Harvester 26 and be collected respectively.For image detection chamber 232, its detection means is bright chroma
28 (being commonly called as light gun) of meter, its transmittance section 27 is, for example, glass plate and positioned at image detection position 212b
Surface, its reflective mirror 29 is polylith arrangement of mirrors and to be fixed in image detection chamber 232,
So as to the image shown positioned at the LED display module of image detection position 212b is for example according to default
Red, the green and blue image of order display can be through transmittance section 27 and via reflective mirror 29
Reflex to bright chroma meter 28 and be collected.
Hold above-mentioned, image collecting device 26 is used for collection and is sent to image detection position 212a's
Each image that LED display module shows is obtaining the relatively bright chrominance information of every LED lamp point
And then for improving the show uniformity of LED display module；Even preferably, image collecting device
26 be additionally operable to gather the white line image that show of LED display module such as white oblique line image,
White vertical line charting picture or the white horizontal line even completely white image of image, whereby it can be detected that LED shows
The phenomenons such as whether the LED point in module punctures, short circuit.In the present embodiment, IMAQ
Device 26 can be with digital camera, slr camera, industrial camera etc..
Additionally, bright chroma meter 28 can be filter disc type bright chroma meter, or spectrum-type bright chroma
Meter, the part that it is used to gather the LED display module for being sent to image detection position 212b is absolute
Bright chroma information (or absolute value of the local average bright chroma of LED display module).The present embodiment
In, the absolute bright chroma information of the LED display module collected by bright chroma meter 18 can be with
Demarcated for the light tone angle value to each LED display module, to improve LED display module
Bright chroma difference and LED display module between.
Scanning means 24a, 24b are corresponding with image detection position 212a, 212b respectively, for
Identification is sent to the LED display module of image detection position 212a and image detection position 212b；
Scanning means 24c is corresponding with correction coefficient writing position 216, and correction is sent to for identification
The LED display module of coefficient writing position 216.In the present embodiment, scanning means 24a-24c
Infrared scan rifle in this way, naturally it is also possible to be other scanning means such as rfid interrogator.
Thermostat 25 is provided in sensing chamber 23, and it is used to provide a conjunction for sensing chamber 23
Suitable environment temperature is beneficial to lifting accuracy of detection.
As for the inspection of the LED display module image detecting apparatus for being applied to second embodiment of the invention
Survey procedure and may be referred to the detection method process of aforementioned first embodiment, main difference is in
In：Red image, green image, the blue image of second embodiment of the invention are by same image
Harvester 26 is gathered, and the red image of first embodiment of the invention, green image, blue figure
As separately being gathered by different image collector 16a-16c.
Further it will be understood that the speculum 29 of second embodiment of the invention be not limited to it is many
Block arrangement of mirrors, it can also be substituted for the monolithic speculum shown in Fig. 1.
【3rd embodiment】
Referring to Fig. 3, the LED display module testing equipment that third embodiment of the invention is proposed includes：
Transmission track system 31, sensing chamber 33, image detection chamber 330 and scanning means 34a, 34b；
And preferably also include thermostat 25.
Wherein, transmission track system 31 can transport simultaneously LED display module such as LED lamp panel
Specified location is fixed to, is for example equipped with its track (such as conveyer belt) and is gone up electric, upper signal automatically
Device reaches specified location normal work to ensure LED display module.It is understood that transmission
Rail system 31 is additionally provided with PLC (Programmable Logic in addition to including track, typically
Controller, programmable logic controller (PLC)).Furthermore, can be learnt from Fig. 3：Transmission track system
31 be configured with inspection before holding fix 310, image detection position 312, inspection after holding fix 314 with
And correction coefficient writing position 316.
Sensing chamber 33 is used to provide dark room conditions, its be, for example, shell structure and inner surface be coated with it is low
Reflective materials, to ensure that image-detection process does not receive external interference.In figure 3, waited before examining
Position 310, image detection position 312 are located in sensing chamber 33, and the He of holding fix 314 after examining
Correction coefficient writing position 316 is located at outside sensing chamber 33.
Image detection chamber 330 is arranged in sensing chamber 33 and including transmittance section 37, the and of reflective mirror 39
Detection means is for example distributed along the direction of transfer of transmission track system 31 and is movably disposed at detection
The image collecting device 36 and bright chroma meter 38 at the top of room 33.
More specifically, for image detection chamber 330, its transmittance section 37 is, for example, glass plate and is located at
The surface of image detection position 312, its reflective mirror 39 is polylith arrangement of mirrors and is fixed on figure
As in test chamber 330, so that the figure that the LED display module positioned at image detection position 312 shows
As red, green, the blue image that are for example shown according to preset order can pass through transmittance section 37
And reflex to image collecting device 36 or bright chroma meter 38 via reflective mirror 39 and be collected respectively.
Hold above-mentioned, image collecting device 36 is used to gather the LED for being sent to image detection position 312
Each image that display module shows with obtain every LED lamp point relatively bright chrominance information and then
Show uniformity for improving LED display module；Even preferably, image collecting device 36
It is additionally operable to gather for example white oblique line image of white line image, white that LED display module shows
Vertical line charting picture or the white horizontal line even completely white image of image, whereby it can be detected that LED display module
In LED point whether puncture, the phenomenon such as short circuit.In the present embodiment, image collecting device
36 can be with digital camera, slr camera, industrial camera etc..
Additionally, bright chroma meter 38 can be filter disc type bright chroma meter, or spectrum-type bright chroma
Meter, the part that it is used to gather the LED display module for being sent to image detection position 312 is definitely bright
Chrominance information (or absolute value of the local average bright chroma of LED display module).In the present embodiment,
The absolute bright chroma information of the LED display module collected by bright chroma meter 38 can be used for
Light tone angle value to each LED display module is demarcated, to improve LED display module and LED
Bright chroma difference between display module.
Scanning means 34a is corresponding with image detection position 312, and image is sent to for identification
The LED display module of test position 312；Scanning means 34b and correction coefficient writing position 316
It is corresponding, the LED display module of correction coefficient writing position 316 is sent to for identification.This
In embodiment, scanning means 34a, 34b are, for example, infrared scan rifle, naturally it is also possible to be that other are swept
Imaging apparatus such as rfid interrogator.
Thermostat 35 is provided in sensing chamber 33, and it is used to provide a conjunction for sensing chamber 33
Suitable environment temperature is beneficial to lifting accuracy of detection.
As for the inspection of the LED display module image detecting apparatus for being applied to third embodiment of the invention
Survey procedure and may be referred to the detection method process of aforementioned first embodiment, main difference is in
In：Third embodiment of the invention uses an image detection position 312 and an image detection chamber 330
Image collecting device 36 and bright chroma meter 38 to realize image detection and image detection chamber 330 exist
Need to move to specified location in image-detection process to receive the image light that the reflection of speculum 39 comes
Line carries out IMAQ.
It is understood that the quantity of the image collecting device 36 of third embodiment of the invention is not limited
One is made as, and can be multiple side by side.
Furthermore, it is to be understood that the LED display module of above-mentioned each embodiment of the present invention is not
It is limited to foregoing illustrated LED lamp panel, it can also be LED box.Additionally, in other realities
Apply in example, LED display module testing equipment can also be not provided with bright chroma meter, and only set image
Harvester such as camera.
In sum, the embodiment of the present invention can automatically complete LED display module such as LED
The brightness of the every LED lamp in the qualification detection of lamp plate and automatically correction LED lamp panel or light tone
Degree, this automatic mode is higher than existing manual detection method accuracy, easy quantization, greatly improve
Efficiency simultaneously saves cost of labor.Furthermore, as a result of reflective mirror, it can shorten equipment
Highly, to the further reduction of requirement on height of workshop.
The above, is only presently preferred embodiments of the present invention, and any shape is not made to the present invention
Limitation in formula, although the present invention is disclosed above with preferred embodiment, but is not limited to
The present invention, any those skilled in the art, without departing from the scope of the present invention,
When making a little change using the technology contents of the disclosure above or be modified to the equivalent reality of equivalent variations
Apply example, as long as be without departing from technical solution of the present invention content, according to technical spirit of the invention to
Any simple modification, equivalent variations and modification that upper embodiment is made, still fall within the technology of the present invention
In the range of scheme.
Claims (10)
1. a kind of LED display module testing equipment, it is characterised in that including：
Transmission track system, for transmit LED display module and including inspection before holding fix, image
Holding fix and correction coefficient writing position after test position, inspection；
Sensing chamber, for providing dark room conditions and described image test position, to be located at the detection indoor；
Image detection chamber, is arranged on the detection interior and including transmittance section, speculum and detection dress
Put, the detection means is used for being sent to described image test position from holding fix before the inspection
LED display module carry out image detection with obtain view data for judge completed image inspection
Whether the LED display module of survey is qualified and calculates the lamp of qualified LED display module point school
Positive coefficient, wherein being passed through the image that the LED display module shows when described image is detected is carried out
The transmittance section simultaneously reflexes to the detection means via the speculum；And
Scanning means, described image test position is sent to for recognizing from holding fix before the inspection
It is sent to from holding fix after the inspection with the LED display module and identification that receive image detection
The correction coefficient writing position with receive lamp point calibration coefficient write-in LED display module.
2. LED display module testing equipment as claimed in claim 1, it is characterised in that described
Image detection chamber includes the first image detection chamber and the second image detection chamber, described first image detection
The detection means in chamber is image collecting device, and the detection in the second image detection chamber is filled
It is set to bright chroma meter.
3. LED display module testing equipment as claimed in claim 2, it is characterised in that described
The quantity in the first image detection chamber is multiple, each described image test chamber one figure of correspondence
As test position and a scanning means.
4. LED display module testing equipment as claimed in claim 3, it is characterised in that described
In multiple first image detection chambers and the second image detection chamber the speculum of each be with
The monolithic speculum that the detection means is oppositely arranged.
5. LED display module testing equipment as claimed in claim 2, it is characterised in that described
The quantity in the first image detection chamber and the second image detection chamber is one, described first image
The reflective mirror of each in test chamber and the second image detection chamber for monolithic speculum or
Polylith arrangement of mirrors.
6. LED display module testing equipment as claimed in claim 1, it is characterised in that described
The quantity of image detection chamber and described image test position is one, and described image test chamber
The detection means includes the direction of transfer distribution along the transmission track system and is movably disposed at
Bright chroma meter and image collecting device at the top of the sensing chamber.
7. LED display module testing equipment as claimed in claim 1, it is characterised in that described
Detection means is used to gather red image, green image, blue image and white line image.
8. LED display module testing equipment as claimed in claim 1, it is characterised in that described
Speculum be oppositely arranged with the detection means and position fix monolithic speculum, for will
The image for being directly incident on the monolithic speculum through the transmittance section directly reflexes to the detection
Device.
9. LED display module testing equipment as claimed in claim 1, it is characterised in that described
Holding fix is located at the detection interior before inspection, and the correction coefficient writing position is located at the detection
It is outdoor.
10. LED display module testing equipment as claimed in claim 9, it is characterised in that also
Including thermostat, the detection is arranged on indoor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836368.6A CN106803410A (en) | 2015-11-26 | 2015-11-26 | LED display module testing equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510836368.6A CN106803410A (en) | 2015-11-26 | 2015-11-26 | LED display module testing equipment |
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| CN106803410A true CN106803410A (en) | 2017-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510836368.6A Pending CN106803410A (en) | 2015-11-26 | 2015-11-26 | LED display module testing equipment |
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| Country | Link |
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| CN (1) | CN106803410A (en) |
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Application publication date: 20170606 |