CN106803412A - LED display module testing equipment and method - Google Patents
LED display module testing equipment and method Download PDFInfo
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- CN106803412A CN106803412A CN201510836370.3A CN201510836370A CN106803412A CN 106803412 A CN106803412 A CN 106803412A CN 201510836370 A CN201510836370 A CN 201510836370A CN 106803412 A CN106803412 A CN 106803412A
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Abstract
The present invention relates to a kind of LED display module testing equipment and method.The testing equipment includes：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；Whether detection means is qualified and calculate the lamp point calibration coefficient of qualified LED display module to obtain the LED display module that view data is used to judge to have completed image detection for carrying out image detection to the LED display module that image detection position is sent to from holding fix before inspection；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.
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 and a kind of LED display module detection method.
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 and a kind of LED display module detection method.
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,
It is indoor that described image test position is located at the detection；Detection means, for from before the inspection etc.
Treat that position is sent to the LED display module of described image test position and carries out image detection to obtain
View data is used to judge whether the LED display module for having completed image detection is qualified and calculates
Go out the lamp point calibration coefficient of qualified LED display module；And scanning means, for recognizing from institute
Holding fix is sent to described image test position and is shown with receiving the LED of image detection before stating inspection
Module and identification are sent to the correction coefficient writing position to receive from holding fix after the inspection
The LED display module of lamp point calibration coefficient write-in.
In one embodiment of the invention, the detection means includes image collecting device, sets
In the top of described image test position and for gathering red image, green image, blue image
And white line image；Described image harvester is one-to-one corresponding with described image test position
The quantity of relation and described image harvester is one or more.
In one embodiment of the invention, the detection means includes bright chroma meter and IMAQ
Device, correspondingly the quantity of described image test position is multiple；Wherein, the bright chroma meter sets
Put the top of in the multiple image detection position, described image harvester with it is described
Surplus in multiple images test position the rest is one-to-one relationship and be arranged on corresponding image inspection
The top that location is put, and the quantity of described image harvester is one or more.
In one embodiment of the invention, the detection means includes bright chroma meter and IMAQ
Device, the bright chroma meter same image detection position corresponding with described image harvester and can
The top of described image test position is set dynamicly.
In one embodiment of the invention, the LED display module testing equipment also includes constant temperature
Device, is arranged on the detection indoor.
Additionally, a kind of LED display module detection method that the embodiment of the present invention is proposed, including step：
Transmit LED display module to first position；In the LED display module from the first position
After being sent to the second place, recognize the LED display module and the LED display module is entered
Row image detection；By the LED display module from the second after described image detection is completed
Put and be sent to the wait of the 3rd position；Described in the view data obtained according to described image detection judges
Whether LED display module is qualified, and makes when the LED display module is judged as unqualified
Unqualified LED display module is removed from the 3rd position；By qualified LED display module from institute
State the 3rd position and be sent to the 4th position；And identification is sent to the qualified LED of the 4th position
Display module and the lamp point calibration system for calculating the view data obtained according to described image detection
Memory of the number write-in positioned at the corresponding qualified LED display module of the 4th position.
In one embodiment of the invention, the first position and the second place are in darkroom
Environment.
In one embodiment of the invention, the LED display module detection method also includes step
Suddenly：Make the temperature for being located at the LED display module of the first position dark with described by thermostat
The temperature of room environmental reaches unanimity.
In one embodiment of the invention, described image detection includes gathering LED display module
Absolute bright chroma information, the relatively bright chrominance information of collection LED display module and collection LED
White oblique line image and full white image that display module shows.
In one embodiment of the invention, the LED display module is LED lamp panel.
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 or bright of the every LED lamp point in the qualification detection of lamp plate and automatically correction LED lamp panel
Colourity, this automatic mode is higher than existing manual detection method accuracy, easy quantization, carry significantly
Efficiency high simultaneously saves cost of labor.
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, bright chroma meter 16, scanning means 17a, 17b, 17c, figure
As harvester 18；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 be configured with inspection before holding fix 110, image detection post-11.2,114, inspection after holding fix 116
And correction coefficient writing position 118.
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 and image detection post-11.2,114 are located in sensing chamber 13, and holding fix after examining
116 and correction coefficient writing position 118 be located at sensing chamber 13 outside.Furthermore, in Fig. 1, detection
Image detection chamber 130 and image detection chamber 132 are configured with room 13.
Bright chroma meter 16 is arranged in image detection chamber 130 and positioned at the upper of image detection post-11.2
Side, it is aobvious that it is used to gathering the LED for being sent to image detection post-11.2 from holding fix 110 before inspection
Show local definitely bright chroma information (or the local average bright chroma of LED display module of module
Absolute value).In the present embodiment, the LED display module collected by bright chroma meter 130
Absolute bright chroma information can be used for demarcating the light tone angle value of each LED display module, with
Improve the bright chroma difference between LED display module and LED display module.
Image collecting device 18 is arranged in image detection chamber 132 and positioned at image detection position 114
Top, it is used to gathering, and that the LED display module for being sent to image detection position 114 shows is each
Monochrome image such as red image, green image, blue image is planted to obtain every LED lamp point
The show uniformity of relatively bright chrominance information and then improvement LED display module；Even preferably may be used also
For for example white oblique line image of white line pattern, white that collection LED display module shows
Vertical line charting picture and/or white horizontal line image, whereby it can be detected that the LED in LED display module
The phenomenons such as whether lamp point punctures, short circuit.In the present embodiment, image collecting device 18 is, for example,
Camera, as digital camera, slr camera, industrial camera etc..
Scanning means 17a, 17b, 17c respectively with image detection post-11.2, image detection position 114
It is corresponding with correction coefficient writing position 118, it is sent to image detection position to be respectively used to identification
112nd, the LED display module of image detection position 114 and correction coefficient writing position 118.This
In embodiment, scanning means 17a, 17b, 17c are, for example, infrared scan rifle, naturally it is also possible to be it
His 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.
(2) LED display module is sent to image detection post-11.2 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 17a is identified to LED display module, and bright chroma meter 16 (is commonly called as light
Rifle) be pointed to the LED display module of image detection post-11.2 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 Concurrent respectively
Give correction software；Herein correction software be, for example, install on a personal computer and with bright chroma meter
16 are connected.
(3) LED display module is sent to image detection position 114 from image detection post-11.2,
Transmission track system 11 makes LED display module just to electric, upper signal in LED display module automatically
Often work, scanning means 17b is identified to LED display module, image collecting device 18
As camera be pointed to the LED display module of image detection position 114 according to preset order show it is red
Color, green and blue image are acquired and obtain view data and be sent to correction software respectively, by
Correction software is analyzed treatment to red, green, the blue image data that collect.Preferably,
In order to detect the point of the LED in LED display module with the presence or absence of puncturing, the failure, figure such as short circuit
Also gather that the LED display module positioned at image detection position 114 shows as harvester 18 is white
For example many secondary white oblique line even completely white images of image of colo(u)r streak bar image.
(4) holding fix 116 etc. after LED display module is sent to from image collecting device 114 and examines
Treat image detection 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 116 after inspection shows mould according to the result of data analysis
Whether block is qualified, for example, judge the dead lamp of LED display module, bright light long, light tone angle value, uniform
Property index whether meet the scope of setting, qualified LED display module is waited and enters next link, no
Qualified LED display module by manually or mechanically hand, remove and tieed up by the holding fix 116 from after inspection
Repair；C) correction software according to bright chroma meter 16 and image collecting device 18 collect it is red, green,
Blue image three-colo(u)r data calculate the lamp point calibration coefficient of qualified LED display module, typically close
The brightness of each LED point in lattice LED display module or bright chroma correction coefficient.
(5) qualified LED display module holding fix 116 from after inspection is sent to correction coefficient write-in
Position 118, transmission track system 11 makes to electric, upper signal in qualified LED display module automatically
Its normal work, scanning means 17c 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, and latter LED display module is simultaneously
Holding fix 110 before into inspection；Previous LED display module enters image detection position 114,
Latter two LED display module respectively enters holding fix 110 and image detection post-11.2 before inspection；
During normal operation, holding fix 110 before inspection, image detection post-11.2, image detection position 114,
Holding fix 116 and correction coefficient writing position 118 have LED to show mould in synchronization after inspection
Pipeline system operation is realized in block, each station concurrent working, thus 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, scanning means 27b, 27c, image collecting device 28a, 28b,
28c,28d；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 210, image detection position 214a, 214b, 214c, 214d, inspection before inspection
Holding fix 216 and correction coefficient writing position 218 afterwards.
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 and image detection position 214a, 214b, 214c, 214d are located in sensing chamber 23, and are examined
Holding fix 216 and correction coefficient writing position 218 are located at outside sensing chamber 23 afterwards.Furthermore, in figure
In 2, image detection chamber 232a, 232b, 232c, 232d are configured with sensing chamber 23.
Image collecting device 28a, 28b, 28c, 28d are separately positioned on image detection chamber 232a, 232b,
In 232c, 232d and respectively positioned at the top of image detection position 214a, 214b, 214c, 214d.
Wherein, image collecting device 232a is used to gather and is shown positioned at the LED of image detection position 214a
The image that module shows such as red image, image collecting device 232b is used to gather positioned at image inspection
The image that the LED display module that location puts 214b shows such as green image, and IMAQ
Device 232c is used to gather the image shown positioned at the LED display module of image detection position 214c
Such as blue image, such that it is able to obtain red, green, the blue image number of LED display module
It is easy to obtain its relatively bright chrominance information according to this；Image collecting device 232d is used to gather positioned at image
The image that the LED display module of test position 214d shows such as white line image (such as white
Oblique line image) even completely white image, in order to detect that LED display module whether there is LED point
Puncture, the failure such as short circuit.It is noted that each image collecting device 28a, 28b, 28c, 28d
Acquired image color can be exchanged arbitrarily each other.In the present embodiment, image collecting device 28a,
28b, 28c, 28d are, for example, camera, as digital camera, slr camera, industrial camera etc..
Scanning means 27b, 27c respectively with image detection position 214a and correction coefficient writing position
218 is corresponding, and to be respectively used to, identification is sent to image detection position 214a and correction coefficient writes
The LED display module of position 218.In the present embodiment, 27b, 27c are e.g. infrared for scanning means
Scanner, 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：The red image of second embodiment of the invention, green image, blue image, white line figure
As and/full white image is separate collection, and the red image of first embodiment of the invention, green figure
Picture, blue image, white line image and/full white image are same by same image collecting device
One image detection position is acquired.
Furthermore, it is to be understood that second embodiment of the invention can also be similar to that Fig. 1 also sets up
One image detection position carries out the collection of absolute bright chroma information for bright chroma meter, and its position can
Be in image detection position 214a, 214b, 214c, before 214d, between or afterwards.In addition,
Second embodiment of the invention can also be omitted from image detection position 214a, 214b, 214c in 214d
One image detection position, correspondingly from image collecting device 28a, 28b, 28c, omits one in 28d
Individual image collecting device, so that red, green, the collection of blue image data are only carried out, without
Carry out the collection of white line image and/or full white image.
【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, bright chroma meter 36, scanning means 37a, 37c, image are adopted
Acquisition means 38；And preferably also include thermostat 35.
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 316 with
And correction coefficient writing position 318.
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 and image detection position 312 are located in sensing chamber 33, and holding fix 316 after examining
It is located at outside sensing chamber 33 with correction coefficient writing position 318.
Bright chroma meter 36 and the same image detection position 312 of correspondence of image collecting device 38 and can
The top of image detection position 312 is arranged on dynamicly.Wherein, bright chroma meter 36 is used to gather from inspection
Preceding holding fix 310 is sent to the local definitely bright of the LED display module of image detection position 312
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 330 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.Image collecting device 38 is sent to image detection for collection
The various monochrome images that the LED display module of position 312 shows for example red image, green image,
Blue image with obtain every LED lamp point relatively bright chrominance information so that improve LED display mould
The show uniformity of block；Even preferably can be also used for gathering the white that LED display module shows
For example white oblique line image of line image, white vertical line charting picture and/or white horizontal line image, so that can
To detect the phenomenons the such as whether point of the LED in LED display module punctures, short circuit.This
In embodiment, image collecting device 38 is, for example, camera, as digital camera, slr camera, industry
Camera etc..
Scanning means 37a, 37c respectively with image detection position 312 and correction coefficient writing position
318 is corresponding, and to be respectively used to, identification is sent to image detection position 312 and correction coefficient writes
The LED display module of position 318.In the present embodiment, 37a, 37c are e.g. infrared for scanning means
Scanner, naturally it is also possible to be other scanning means 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：The image detection position only one of which of third embodiment of the invention, bright chroma meter 36 and image are adopted
The surface that acquisition means 38 movably move to image detection position 312 carries out IMAQ.
Further it will be understood that holding fix is not after the inspection of above-mentioned each embodiment of the present invention
It is limited to be located at detection outdoor, it is also possible to indoor positioned at detection.Furthermore, LED display module is not limited
In foregoing illustrated LED lamp panel, it can also be LED box.
In sum, the embodiment of the present invention can automatically complete LED display module such as LED
The brightness or bright of the every LED lamp point in the qualification detection of lamp plate and automatically correction LED lamp panel
Colourity, this automatic mode is higher than existing manual detection method accuracy, easy quantization, carry significantly
Efficiency high simultaneously saves cost of labor.
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, it is indoor that described image test position is located at the detection；
Detection means, 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 detection
LED display module it is whether qualified and calculate the lamp point calibration of qualified LED display module
Coefficient；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
Detection means includes image collecting device, is arranged on the top of described image test position and for adopting
Collection red image, green image, blue image and white line image；Described image collection dress
Put with described image test position as the quantity of one-to-one relationship and described image harvester is one
Individual or multiple.
3. LED display module testing equipment as claimed in claim 1, it is characterised in that described
Detection means includes bright chroma meter and image collecting device, correspondingly the number of described image test position
It is multiple to measure；Wherein, the bright chroma meter is arranged in the multiple image detection position
Top, surplus in described image harvester and the multiple image detection position the rest is one by one
Corresponding relation and the top of corresponding image detection position is arranged on, and described image collection dress
The quantity put is one or more.
4. LED display module testing equipment as claimed in claim 1, it is characterised in that described
Detection means includes bright chroma meter and image collecting device, and the bright chroma meter and described image are gathered
The same image detection position of device correspondence and the movably top of setting described image test position.
5. LED display module testing equipment as claimed in claim 1, it is characterised in that also wrap
Thermostat is included, the detection is arranged on indoor.
6. a kind of LED display module detection method, it is characterised in that including step：
Transmit LED display module to first position；
After the LED display module is sent to the second place from the first position, identification is described
LED display module simultaneously carries out image detection to the LED display module；
The LED display module is transmitted from the second place after described image detection is completed
Waited to the 3rd position；
Judge whether the LED display module closes according to the view data that described image detection is obtained
Lattice, and make unqualified LED display module when the LED display module is judged as unqualified
Removed from the 3rd position；
Qualified LED display module is sent to the 4th position from the 3rd position；And
Identification be sent to the 4th position qualified LED display module and will be according to described image
Phase of the lamp point calibration coefficient write-in that the view data that detection is obtained is calculated positioned at the 4th position
The memory of corresponding qualified LED display module.
7. LED display module detection method as claimed in claim 6, it is characterised in that described
First position and the second place are in dark room conditions.
8. LED display module detection method as claimed in claim 7, it is characterised in that also wrap
Include step：Temperature and the institute of the LED display module positioned at the first position are made by thermostat
The temperature for stating dark room conditions reaches unanimity.
9. LED display module detection method as claimed in claim 6, it is characterised in that described
Image detection includes the absolute bright chroma information of collection LED display module, collection LED display moulds
White oblique line image that the relatively bright chrominance information of block and collection LED display module shows and entirely
White image.
10. LED display module detection method as claimed in claim 6, it is characterised in that institute
LED display module is stated for LED lamp panel.
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| CN201510836370.3A CN106803412A (en) | 2015-11-26 | 2015-11-26 | LED display module testing equipment and method |
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| CN201510836370.3A CN106803412A (en) | 2015-11-26 | 2015-11-26 | LED display module testing equipment and method |
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| WO2020186446A1 (en) * | 2019-03-19 | 2020-09-24 | 西安诺瓦电子科技有限公司 | Display unit calibration system and method |
| CN112013960A (en) * | 2020-08-20 | 2020-12-01 | 深圳Tcl新技术有限公司 | Color gamut detection device and method |
| CN112697405A (en) * | 2021-03-23 | 2021-04-23 | 北京芯海视界三维科技有限公司 | Light-emitting unit detection method and device and detection instrument |
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