CN113012607A - Display module detection method, device and system - Google Patents
Display module detection method, device and system Download PDFInfo
- Publication number
- CN113012607A CN113012607A CN201911318769.7A CN201911318769A CN113012607A CN 113012607 A CN113012607 A CN 113012607A CN 201911318769 A CN201911318769 A CN 201911318769A CN 113012607 A CN113012607 A CN 113012607A
- Authority
- CN
- China
- Prior art keywords
- display module
- detected
- image data
- led display
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 58
- 238000009434 installation Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000013441 quality evaluation Methods 0.000 claims abstract description 32
- 238000009826 distribution Methods 0.000 claims description 18
- 239000003086 colorant Substances 0.000 claims description 12
- 238000001303 quality assessment method Methods 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000012545 processing Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention relates to a display module detection method, a device and a system, wherein the method comprises the following steps: i) controlling the LED display module to be detected to be in a first display state; ii) controlling an image acquisition device to acquire an image of the LED display module to be detected in the first display state to obtain first image data, wherein the image acquisition device has a first shooting angle; iii) controlling the LED display module to be detected to be in a second display state; iv) controlling the image acquisition equipment to acquire an image of the LED display module to be detected in the second display state to obtain second image data; and v) generating a plurality of quality evaluation indexes corresponding to the LED display module to be detected according to the first image data and the second image data, wherein the quality evaluation indexes comprise part or all of brightness uniformity indexes, chromaticity uniformity indexes, lamp point installation position accuracy indexes and lamp point installation surface color accuracy indexes. The embodiment of the invention can automatically evaluate the process problems in the LED production process.
Description
Technical Field
The invention relates to the technical field of display detection, in particular to a display module detection method, a display module detection device and a display module detection system.
Background
The LED display screen is a flat panel display device consisting of an LED lamp point array, and is widely applied to various occasions of daily life along with the rapid development of the industry. The wide application and rapid development of the LED display screen are inseparable from the advantages of the LED display screen, which include: the LED display screen has the advantages of high brightness, low working voltage, low power consumption, free assembly, large screen, long service life, low failure rate, impact resistance, stable performance, high visibility, easy matching with an integrated circuit and the like. The LED display screen is based on the semiconductor technology which is developed vigorously for decades, has a series of advantages of adjustable brightness range, safety, environmental protection, energy conservation, bright color, large visual range, clear content and the like, is easy to update, low in cost and good in timeliness compared with other traditional information display media, simultaneously, bright and smooth colored moving pictures attract the eyes of people more easily, and has incomparable advantages compared with other media in the information display and transmission. At present, LED display screens are developing towards higher brightness, higher weatherability and higher light emitting density, and meanwhile, the requirements of people on the display quality are becoming stricter.
At present, the dot spacing of the LED display screen is smaller and smaller, and the requirements on the production process in the production process are higher and higher, such as the accuracy of a light dot paster (or called the accuracy of a light dot installation position), the accuracy of the ink color of a lamp panel (namely the accuracy of the color of a light dot installation surface), the grading of the brightness of the light dots, the grading of the chromaticity of the light dots and the like; if the precision problem occurs in the production link, the effect problem can be brought to the display picture of the display screen in the later period. However, color differences, ink color differences, and the like for LED products such as LED display modules are basically checked manually; and the error is easy to appear in the manual watching, and different people can not reach the standardization because the standards are different.
Disclosure of Invention
Therefore, in order to overcome at least some of the defects and shortcomings of the prior art, embodiments of the present invention provide a display module detection method, a display module detection apparatus, and a display module detection system, which can automatically detect an LED display module and generate quality assessment, so as to automatically assess the process problem in the LED production process, help manufacturers improve the process, prevent errors in the detection process, improve the detection accuracy, and standardize the detection of the LED display module.
In a first aspect, an embodiment of the present invention provides a display module detection method, including: i) controlling an LED display module to be detected to be in a first display state, wherein a plurality of lamp points are arranged on a lamp point mounting surface of the LED display module to be detected; ii) controlling a first image acquisition device to acquire an image of the LED display module to be detected in the first display state to obtain first image data, wherein the first image acquisition device has a first shooting angle relative to the LED display module to be detected; iii) controlling the LED display module to be detected to be in a second display state; iv) controlling the first image acquisition equipment to acquire an image of the LED display module to be detected in the second display state to obtain second image data; and v) generating a plurality of quality evaluation indexes corresponding to the LED display module to be detected according to the first image data and the second image data, wherein the quality evaluation indexes comprise part or all of brightness uniformity indexes, chromaticity uniformity indexes, lamp point installation position accuracy indexes and lamp point installation surface color accuracy indexes.
According to the display module detection method provided by the embodiment of the invention, the first image acquisition equipment, such as a camera, at the first shooting angle is used for acquiring images of the LED display module to be detected in different display states, so that the automatic detection of the LED display module to be detected can be realized to obtain two or more quality evaluation indexes, such as a brightness uniformity index, a chromaticity uniformity index, a lamp point installation position precision index and a lamp point installation surface color precision index, and therefore, the process problems in the LED production process can be automatically evaluated, and a manufacturer is helped to improve the process.
In an embodiment of the present invention, the first display state includes displaying a plurality of different color pictures according to a preset sequence, the first image data includes a plurality of different color image data, and the generating a plurality of quality assessment indicators corresponding to the LED display module to be detected according to the first image data and the second image data includes generating the luminance uniformity indicator, the chromaticity uniformity indicator, and/or the lamp point installation position accuracy indicator according to the plurality of different color image data.
In one embodiment of the present invention, the plurality of different color pictures include a red picture, a green picture, a blue picture, and a white picture, and the plurality of different color image data includes red image data, green image data, blue image data, and white image data.
In an embodiment of the present invention, the second display state includes displaying a black image or is in a display off state, the second image data includes black image data, and the generating of the plurality of quality assessment indicators corresponding to the LED display module to be detected according to the first image data and the second image data includes generating the color accuracy indicator of the light point mounting surface according to the black image data.
In an embodiment of the present invention, the display module detecting method further includes: vi) controlling at least one second image acquisition device to acquire images of the LED display module to be detected in the first display state to obtain at least one third image data, wherein the at least one second image acquisition device has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected; and vii) generating a light distribution curve corresponding to the LED display module to be detected according to the first image data and the at least one third image data.
In one embodiment of the present invention, the first photographing angle is a front photographing angle, the at least one second photographing angle is a side photographing angle, and the side photographing angle is greater than-90 degrees and less than +90 degrees.
In a second aspect, an embodiment of the present invention provides a display module detection apparatus, adapted to perform the display module detection method according to any of the foregoing first aspects, and including: the device comprises a display control module, an acquisition control module and an index generation module. The display control module is used for controlling the LED display module to be detected to be in a first display state, wherein a plurality of lamp points are arranged on a lamp point mounting surface of the LED display module to be detected; the acquisition control module is used for controlling first image acquisition equipment to acquire an image of the LED display module to be detected in the first display state so as to obtain first image data, wherein the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected; the display control module is also used for controlling the LED display module to be detected to be in a second display state; the acquisition control module is further used for controlling the first image acquisition equipment to acquire an image of the LED display module to be detected in the second display state so as to obtain second image data; and the index generation module is used for generating a plurality of quality evaluation indexes corresponding to the LED display module to be detected according to the first image data and the second image data, wherein the quality evaluation indexes comprise part or all of brightness uniformity indexes, chromaticity uniformity indexes, accuracy indexes of installation positions of the lamp points and color accuracy indexes of installation surfaces of the lamp points, such as two or more indexes.
In a third aspect, a method for detecting a display module according to another embodiment of the present invention includes: a) controlling an LED display module to be detected to be in a target display state, wherein the target display state comprises the display of pictures with various colors according to a preset sequence, and a plurality of lamp points are arranged on a lamp point mounting surface of the LED display module to be detected; b) controlling first image acquisition equipment to acquire an image of the LED display module to be detected in the target display state to obtain first target image data, wherein the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected; c) controlling at least one second image acquisition device to acquire an image of the LED display module to be detected in the target display state to obtain at least one second target image data, wherein the at least one second image acquisition device has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected; and d) generating at least one quality evaluation index corresponding to the LED display module to be detected according to the first target image data and the at least one second target image data, wherein the at least one quality evaluation index comprises one or more of a brightness uniformity index, a chromaticity uniformity index, a lamp point mounting position accuracy index, a lamp point mounting surface color accuracy index and a light distribution curve.
According to the display module detection method, the LED display module to be detected in the same target display state is subjected to image acquisition by the aid of the plurality of image acquisition devices at different shooting angles, and automatic detection of at least one quality evaluation index of the LED display module to be detected can be achieved.
In one embodiment of the present invention, the first photographing angle is a front photographing angle, the at least one second photographing angle is a side photographing angle, and the side photographing angle is greater than-90 degrees and less than +90 degrees.
In an embodiment of the present invention, the generating at least one quality evaluation indicator corresponding to the LED display module to be detected according to the first target image data and the at least one second target image data includes: and generating a plurality of brightness uniformity indexes and/or a plurality of chromaticity uniformity indexes corresponding to the LED display module to be detected at the first shooting angle and the at least one second shooting angle according to the first target image data and the at least one second target image data.
In a fourth aspect, an embodiment of the present invention provides a display module detection apparatus, adapted to perform the display module detection method according to any of the foregoing third aspects, and including: the display control module, the acquisition control module and the index generation module; the display control module is used for controlling the LED display module to be detected to be in a target display state, wherein the target display state comprises the display of pictures with various colors according to a preset sequence, and a plurality of lamp points are mounted on a lamp point mounting surface of the LED display module to be detected; the acquisition control module is used for controlling first image acquisition equipment to acquire an image of the LED display module to be detected in the target display state so as to obtain first target image data, wherein the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected; the acquisition control module is further used for controlling at least one second image acquisition device to acquire an image of the LED display module to be detected in the target display state so as to obtain at least one second target image data, wherein the at least one second image acquisition device has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected; and the index generation module is used for generating at least one quality evaluation index corresponding to the LED display module to be detected according to the first target image data and the at least one second target image data, wherein the at least one quality evaluation index comprises one or more of a brightness uniformity index, a chromaticity uniformity index, a lamp point mounting position accuracy index, a lamp point mounting surface color accuracy index and a light distribution curve.
In a fifth aspect, an embodiment of the present invention provides a display module detection system, including: the detection table is used for loading the LED display module to be detected; the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected; the second image acquisition equipment has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected; the computer is provided with detection software and is electrically connected with the first image acquisition equipment, the at least one second image acquisition equipment and the LED display module to be detected; the computer is used for executing the display module detection method of any one of the preceding embodiments.
As can be seen from the above, the above technical features of the present invention may have one or more of the following advantages: the method comprises the steps that a first image acquisition device such as a camera at a first shooting angle is used for carrying out image acquisition on LED display modules to be detected in different display states, and automatic detection of the LED display modules to be detected can be achieved to obtain two or more quality evaluation indexes such as a brightness uniformity index, a chromaticity uniformity index, a lamp point installation position accuracy index and a lamp point installation surface color accuracy index; in addition, at least one second image acquisition device such as a camera at least one second shooting angle is used for acquiring images of the LED display module to be detected in the target display state, so that automatic detection of a light distribution curve of the LED display module to be detected and/or automatic detection of brightness uniformity and chromaticity uniformity at different shooting angles can be realized. Therefore, the method and the device can automatically evaluate the process problems in the LED production process and help manufacturers to improve the process.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating a display module detection method according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a display module detection system according to an embodiment of the present invention.
Fig. 3 is a schematic flow chart illustrating another display module detection method according to an embodiment of the invention.
Fig. 4 is a flowchart illustrating a further method for detecting a display module according to an embodiment of the present invention.
Fig. 5 is a schematic block diagram of a display module detection apparatus according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of another display module detection system according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a display module detection method provided in an embodiment of the present invention includes the following steps:
s11: controlling an LED display module to be detected to be in a first display state, wherein a plurality of lamp points are arranged on a lamp point mounting surface of the LED display module to be detected;
s12: controlling first image acquisition equipment to acquire an image of the LED display module to be detected in the first display state to obtain first image data, wherein the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected;
s13: controlling the LED display module to be detected to be in a second display state;
s14: controlling the first image acquisition equipment to acquire an image of the LED display module to be detected in the second display state to obtain second image data;
s15: and generating a plurality of quality evaluation indexes corresponding to the LED display module to be detected according to the first image data and the second image data, wherein the quality evaluation indexes comprise part or all of brightness uniformity indexes, chromaticity uniformity indexes, lamp point installation position accuracy indexes and lamp point installation surface color accuracy indexes.
In a specific embodiment, the first display state includes displaying a plurality of different color pictures according to a preset sequence, the first image data includes a plurality of different color image data, and the generating a plurality of quality assessment indicators corresponding to the LED display module to be detected according to the first image data and the second image data includes generating the luminance uniformity indicator, the chromaticity uniformity indicator, and/or the lamp point installation position accuracy indicator according to the plurality of different color image data. In the case of an RGB full-color LED display module to be detected, the images with different colors are, for example, a red image, a green image, a blue image and a white image, and the image data with different colors includes red image data, green image data, blue image data and white image data.
In one embodiment of the present invention, the second display state includes displaying a black screen or being in a display off state. The display off state refers to that each lamp point of the to-be-detected LED display module is in an unlit state, and is commonly called a screen off state. The second image data comprises black image data, and the step of generating a plurality of quality evaluation indexes corresponding to the LED display module to be detected according to the first image data and the second image data comprises the step of generating the color precision indexes of the lamp point mounting surface according to the black image data.
In one embodiment, as shown in fig. 3, the display module detecting method further includes the steps of:
s16: controlling at least one second image acquisition device to acquire an image of the LED display module to be detected in the first display state to obtain at least one third image data, wherein the at least one second image acquisition device has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected;
s17: and generating a light distribution curve corresponding to the LED display module to be detected according to the first image data and the at least one third image data.
In order to more clearly understand the display module detecting method of the present embodiment, the following example is described in detail with reference to fig. 2.
Referring to fig. 2, it is a display module detection system suitable for the display module detection method of the present embodiment. In fig. 2, the display module inspection system includes a first image capturing device 21, at least one (two are shown in fig. 2 as an example) second image capturing device 22, an inspection station 23, and a computer 25 with inspection software installed. The inspection table 23 is used for loading an LED display module 30 to be inspected, the first image capturing device 21 and the at least one second image capturing device 22 are, for example, cameras, and have different shooting angles with respect to the LED display module 30 to be inspected loaded on the inspection table 23, for example, the first image capturing device 21 has a front shooting angle (or 0-degree shooting angle) with respect to the LED display module 30 to be inspected, the two second image capturing devices 22 respectively have two different side shooting angles with respect to the LED display module 30 to be inspected, and the side shooting angles here are located in an angle range greater than-90 degrees and smaller than +90 degrees. The computer 25 is electrically connected to the first image capturing device 21, the at least one second image capturing device 22, and the LED display module 30 to be detected, so as to control the first image capturing device 21 and the at least one second image capturing device 22 to perform image capturing operation and control the display state of the LED display module 30 to be detected. The computer 25 of this embodiment may be a personal desktop computer, a notebook computer, or even a mobile terminal such as a smart phone, where the LED display module 30 to be detected of this embodiment is, for example, an LED lamp panel, and a plurality of light points serving as display pixels are installed on a light point installation surface (for example, a light-emitting surface of the display module 30 to be detected); or, the LED display module to be detected is an LED display box body configured with a display control card (e.g., a receiving card or a scanning card), and the LED display box body includes one or more LED lamp panels electrically connected to the display control card. When the LED display module 30 to be detected is an LED lamp panel, the computer 25 may be electrically connected to the LED display module 30 to be detected through a display screen controller (e.g., a sending card) and a display control card (e.g., a receiving card or a scanning card); when the LED display module 30 to be detected is an LED display box, the computer 25 may be electrically connected to the display control card of the LED display module 30 to be detected through a display screen controller (e.g., a transmitting card). Furthermore, it is worth mentioning that the side photographing angle may select eight photographing angles such as a 10-degree photographing angle, a 20-degree photographing angle, a 30-degree photographing angle, a 40-degree photographing angle, a 50-degree photographing angle, a 60-degree photographing angle, a 70-degree photographing angle, and an 80-degree photographing angle, and accordingly the number of the second image capturing apparatuses 22 is eight; or the side shooting angle is two shooting angles such as a 45-degree shooting angle and an 80-degree shooting angle, and accordingly the number of the second image capturing devices 22 is two, or the side shooting angle is a single shooting angle such as a 75-degree shooting angle, and accordingly the number of the second image capturing devices 22 is one, and the embodiment of the present invention does not specifically limit the number of the second image capturing devices 22.
As mentioned above, the LED display module 30 to be detected is loaded on the detection platform 23, the detection software installed in the computer 25 controls the LED display module to be detected to be in a first display state, for example, to display a plurality of different color pictures such as a red picture, a green picture, a blue picture and a white picture according to a preset sequence, and controls the first image acquisition device 21 to sequentially acquire the red picture, the green picture, the blue picture and the white picture displayed by the LED display module 30 to be detected to obtain first image data including red image data, green image data, blue image data and white image data, and controls the at least one second image acquisition device 22 to sequentially acquire the red picture, the green picture, the blue picture and the white picture displayed by the LED display module 30 to be detected to obtain a second image data including red image data, At least one second image data of green image data, blue image data, and white image data.
Furthermore, the detection software may also control the LED display module 30 to be detected to display a black image or control the LED display module 30 to be detected to be in a display off state, and control the first image acquisition device 21 to perform image acquisition on the LED display module 30 to be detected to obtain black image data.
Then, the detection software may calculate a luminance standard deviation and a chrominance standard deviation by performing image processing on the image data with different colors, such as red image data, green image data, blue image data, and white image data, acquired by the first image acquisition device 21, and the calculated values are used as a luminance uniformity index and a chrominance uniformity index of the LED display module 30 to be detected, where the luminance uniformity index and the chrominance uniformity index may respectively represent whether luminance grading and chrominance grading meet requirements. Of course, the luminance uniformity index and the chrominance uniformity index are not limited to be expressed by the standard deviation, and may be expressed by other manners as long as they can represent the luminance uniformity and the chrominance uniformity. It is understood that the detection software may further perform image processing according to the at least one second image data acquired by the at least one second image acquisition device 22 to obtain a luminance uniformity index and/or a chrominance uniformity index at other shooting angles (e.g., side shooting angles).
The detection software may obtain the color accuracy index of the light point mounting surface of the LED display module 30 to be detected, which is used to represent the ink color accuracy of the light point mounting surface, for example, by performing image processing on the black image data acquired by the first image acquisition device 21 to use a standard deviation or other suitable method.
The detection software may obtain the accuracy index of the mounting position of the light point of the LED display module 30 to be detected, which is used for representing the mounting position accuracy of each light point on the light point mounting surface, for example, by performing image processing on one image data, for example, the green image data, among the plurality of different color image quantities, for example, the red image data, the green image data, the blue image data, and the white image data, acquired by the first image acquisition device 21, so as to use a standard deviation or other appropriate methods.
The detection software may obtain the brightness change of each lamp point on the LED display module 30 to be detected at different shooting angles by performing image processing on the first image data acquired by the first image acquisition device 21 and the at least one second image data acquired by the at least one second image acquisition device 22, so as to obtain the light distribution curve of the LED display module 30 to be detected.
Therefore, after obtaining the quality evaluation indexes of the LED display module 30 to be detected, such as the brightness uniformity index, the chromaticity uniformity index, the color accuracy index of the lamp point mounting surface, the accuracy index of the lamp point mounting position, the light distribution curve and the like, the detection software can output and display links for a user to check so as to judge problems in the production process of the LED display module, so that improvement is carried out, and the display effect of the produced LED display module is better; or, the quality evaluation index exceeding the index threshold is compared and analyzed with the corresponding index threshold, and the quality evaluation index exceeding the index threshold is subjected to alarm prompt. Furthermore, it is worth mentioning that the image processing involved in the process of obtaining the brightness uniformity index, the chromaticity uniformity index, the color accuracy index of the lamp point mounting surface, the lamp point mounting position accuracy index, and the light distribution curve typically includes performing operations such as area positioning, point positioning, and the like on the acquired image to obtain corresponding image data, and these operations are mature technologies in the prior art and are not described again.
In one embodiment, the light distribution curve detection may be performed without performing the above-described color accuracy index detection on the lamp point mounting surface, and accordingly, the display module detection method shown in fig. 4 may be performed, for example, the method includes the steps of:
s31: controlling an LED display module to be detected to be in a target display state, wherein the target display state comprises the display of pictures with various colors according to a preset sequence, and a plurality of lamp points are arranged on a lamp point mounting surface of the LED display module to be detected;
s32: controlling first image acquisition equipment to acquire an image of the LED display module to be detected in the target display state to obtain first target image data, wherein the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected;
s33: controlling at least one second image acquisition device to acquire an image of the LED display module to be detected in the target display state to obtain at least one second target image data, wherein the at least one second image acquisition device has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected;
s34: and generating at least one quality evaluation index corresponding to the LED display module to be detected according to the first target image data and the at least one second target image data, wherein the at least one quality evaluation index comprises one or more of a brightness uniformity index, a chromaticity uniformity index, a lamp point mounting position accuracy index, a lamp point mounting surface color accuracy index and a light distribution curve.
More specifically, step S34 includes, for example, one or more of the following four cases (1) to (4): (1) generating a plurality of brightness uniformity indexes and/or a plurality of chromaticity uniformity indexes corresponding to the LED display module to be detected at different shooting angles according to the first target image data and the at least one second target image data; (2) generating a light distribution curve corresponding to the LED display module to be detected according to the first target image data and the at least one second target image data; (3) generating a brightness uniformity index, a chromaticity uniformity index, a lamp point mounting position precision index and/or a lamp point mounting surface color precision index corresponding to the LED display module to be detected according to the first target image data; and (4) generating a brightness uniformity index, a chromaticity uniformity index and/or a color precision index of a lamp point mounting surface corresponding to the LED display module to be detected according to at least one second target image data.
For the details of step S31, step S32, step S33 and step S34, reference may be made to the detailed description of fig. 2, which is not repeated herein.
In summary, the display module detection method and system of the present embodiment use the first image acquisition device 21, for example, a camera, at the first shooting angle to acquire images of the to-be-detected LED display modules 30 in different display states, so as to achieve automatic detection of the to-be-detected LED display modules 30 to acquire two or more quality assessment indicators, such as a luminance uniformity indicator, a chromaticity uniformity indicator, a lamp point installation position accuracy indicator, and a lamp point installation surface color accuracy indicator; in addition, the second image capturing device 22, such as a camera, at the second shooting angle is used for capturing an image of the LED display module 30 to be detected in the target display state, which can realize automatic detection of the light distribution curve of the LED display module to be detected and/or automatic detection of brightness uniformity and chromaticity uniformity at different shooting angles. Therefore, the method and the device can automatically evaluate the process problems in the LED production process.
Referring to fig. 5, an embodiment of a display module detecting device 50 according to the present invention includes: a display control module 51, an acquisition control module 53 and an index generation module 55.
The display control module 51 is configured to control the LED display module to be detected to be in a first display state, for example, where a plurality of light points are installed on a light point installation surface of the LED display module to be detected; the acquisition control module 53 is, for example, configured to control a first image acquisition device to acquire an image of the to-be-detected LED display module in the first display state, so as to obtain first image data, where the first image acquisition device has a first shooting angle with respect to the to-be-detected LED display module; the display control module 51 is further configured to control the LED display module to be detected to be in a second display state; the acquisition control module 53 is further configured to control the first image acquisition device to acquire an image of the to-be-detected LED display module in the second display state, so as to obtain second image data; and the index generating module 55 is configured to generate a plurality of quality evaluation indexes corresponding to the LED display module to be detected according to the first image data and the second image data, where the plurality of quality evaluation indexes include some or all of a luminance uniformity index, a chromaticity uniformity index, a lamp point mounting position accuracy index, and a lamp point mounting surface color accuracy index.
For the specific functional details of the display control module 51, the acquisition control module 53 and the index generation module 55, reference may be made to the detailed description of the foregoing display module detection method, which is not repeated herein. Further, it is noted that the display control module 51, the collection control module 53 and the index generation module 55 may be software modules stored in the non-volatile memory and executed by the processor to perform the aforementioned steps S11, S12, S13, S14 and S15.
Optionally, as an embodiment of the present invention, the first display state includes displaying pictures with a plurality of different colors according to a preset sequence, the first image data includes a plurality of image data with different colors, and the generating a plurality of quality assessment indicators corresponding to the LED display module to be detected according to the first image data and the second image data includes generating the brightness uniformity indicator, the chromaticity uniformity indicator, and/or the lamp point installation position accuracy indicator according to the plurality of image data with different colors. According to the embodiment, the brightness uniformity index, the chromaticity uniformity index and/or the lamp point installation position precision index can be obtained, so that the detection and evaluation of the brightness uniformity, the chromaticity uniformity and/or the lamp point installation position precision of the LED display module to be detected can be realized.
Optionally, as an embodiment of the present invention, the plurality of different color pictures include a red picture, a green picture, a blue picture, and a white picture, and the plurality of different color image data include red image data, green image data, blue image data, and white image data. The embodiment can realize detection and evaluation of the RGB full-color LED display module.
Optionally, as an embodiment of the present invention, the second display state includes displaying a black image or is in a display off state, the second image data includes black image data, and the generating the plurality of quality assessment indicators corresponding to the LED display module to be detected according to the first image data and the second image data includes generating the color accuracy indicator of the light point mounting surface according to the black image data. The method and the device can realize the color precision evaluation of the lamp point mounting surface of the LED display module to be detected.
Optionally, as an embodiment of the present invention, the capture control module 53 is further configured to control at least one second image capturing device to capture an image of the LED display module to be detected in the first display state, so as to obtain at least one third image data, where the at least one second image capturing device has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected; and the indicator generating module 55 is further configured to generate a light distribution curve corresponding to the LED display module to be detected according to the first image data and the at least one third image data, for example. That is, the acquisition control module 53 and the index generation module 55 may also perform the aforementioned steps S16 and S17. The embodiment can realize the light distribution curve detection of the LED display module to be detected.
Optionally, as an embodiment of the present invention, the first shooting angle is a front shooting angle, the at least one second shooting angle is a side shooting angle, and the side shooting angle is greater than-90 degrees and less than +90 degrees.
In addition, referring to fig. 5 again, another embodiment of the invention provides a display module detecting apparatus 50, including: a display control module 51, an acquisition control module 53 and an index generation module 55.
The display control module 51 is, for example, configured to control, by the display control module, the LED display module to be detected to be in a target display state, where the target display state includes displaying images of multiple different colors according to a preset sequence, and a plurality of light points are installed on a light point installation surface of the LED display module to be detected; the acquisition control module 53 is, for example, configured to control a first image acquisition device to acquire an image of the to-be-detected LED display module in the target display state, so as to obtain first target image data, where the first image acquisition device has a first shooting angle with respect to the to-be-detected LED display module; the acquisition control module 53 is further configured to control at least one second image acquisition device to acquire an image of the to-be-detected LED display module in the target display state, so as to obtain at least one second target image data, where the at least one second image acquisition device has at least one second shooting angle different from the first shooting angle with respect to the to-be-detected LED display module; and the index generating module 55 is configured to generate at least one quality assessment index corresponding to the LED display module to be detected according to the first target image data and the at least one second target image data, where the at least one quality assessment index includes one or more of a brightness uniformity index, a chromaticity uniformity index, a lamp point installation position accuracy index, a lamp point installation surface color accuracy index, and a light distribution curve.
For the specific functional details of the display control module 51, the acquisition control module 53 and the index generation module 55, reference may be made to the detailed description of the foregoing display module detection method, which is not repeated herein. Further, it is noted that the display control module 51, the collection control module 53 and the index generation module 55 may be software modules stored in the non-volatile memory and executed by the processor to perform the aforementioned steps S31, S32, S33 and S34.
Optionally, as an embodiment of the present invention, the first shooting angle is a front shooting angle, the at least one second shooting angle is a side shooting angle, and the side shooting angle is greater than-90 degrees and less than +90 degrees.
Optionally, as an embodiment of the present invention, the index generating module 55 is configured to generate, according to the first target image data and the at least one second target image data, a plurality of luminance uniformity indexes and/or a plurality of chromaticity uniformity indexes corresponding to the LED display module to be detected at the first shooting angle and the at least one second shooting angle. According to the embodiment, a plurality of brightness uniformity indexes and/or a plurality of chromaticity uniformity indexes can be obtained, so that the detection and evaluation of the brightness uniformity and/or the chromaticity uniformity of the LED display module to be detected under different shooting angles can be realized.
As shown in fig. 6, another display module detection system 80 according to an embodiment of the present invention includes: a processor 81 and a memory 83; the memory 83 stores instructions executed by the processor 81, and the instructions cause the processor 81 to perform operations to perform the aforementioned display module detection method, for example.
As shown in fig. 7, an embodiment of the present invention further provides a computer-readable storage medium 90, which is a non-volatile memory and stores program code, and when the program code is executed by one or more processors, for example, the one or more processors are caused to execute the aforementioned display module detection method.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and technical solutions of the embodiments can be arbitrarily combined and used without conflict between technical features and structures, and without departing from the purpose of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and/or method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units/modules is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units/modules described as separate parts may or may not be physically separate, and parts displayed as units/modules may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units/modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, each functional unit/module in the embodiments of the present invention may be integrated into one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated into one unit/module. The integrated units/modules may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units/modules.
The integrated units/modules, which are implemented in the form of software functional units/modules, may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing one or more processors of a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (12)
1. A display module detection method is characterized by comprising the following steps:
controlling an LED display module to be detected to be in a first display state, wherein a plurality of lamp points are arranged on a lamp point mounting surface of the LED display module to be detected;
controlling first image acquisition equipment to acquire an image of the LED display module to be detected in the first display state to obtain first image data, wherein the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected;
controlling the LED display module to be detected to be in a second display state;
controlling the first image acquisition equipment to acquire an image of the LED display module to be detected in the second display state to obtain second image data; and
and generating a plurality of quality evaluation indexes corresponding to the LED display module to be detected according to the first image data and the second image data, wherein the quality evaluation indexes comprise part or all of brightness uniformity indexes, chromaticity uniformity indexes, lamp point installation position accuracy indexes and lamp point installation surface color accuracy indexes.
2. The method according to claim 1, wherein the first display state includes displaying a plurality of different color pictures according to a preset sequence, the first image data includes a plurality of different color image data, and the generating a plurality of quality assessment indicators corresponding to the LED display module to be detected according to the first image data and the second image data includes generating the brightness uniformity indicator, the chromaticity uniformity indicator, and/or the lamp spot installation position accuracy indicator according to the plurality of different color image data.
3. The method according to claim 2, wherein the plurality of different color pictures include a red picture, a green picture, a blue picture, and a white picture, and the plurality of different color image data includes red image data, green image data, blue image data, and white image data.
4. The method according to any one of claims 1 to 3, wherein the second display state includes displaying a black image or is in a display off state, the second image data includes black image data, and the generating the plurality of quality assessment indicators corresponding to the LED display module to be detected according to the first image data and the second image data includes generating the light point mounting surface color accuracy indicator according to the black image data.
5. The display module detecting method according to claim 1, further comprising:
controlling at least one second image acquisition device to acquire an image of the LED display module to be detected in the first display state to obtain at least one third image data, wherein the at least one second image acquisition device has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected;
and generating a light distribution curve corresponding to the LED display module to be detected according to the first image data and the at least one third image data.
6. The method according to claim 5, wherein the first photographing angle is a front photographing angle, the at least one second photographing angle is a side photographing angle, and the side photographing angle is greater than-90 degrees and less than +90 degrees.
7. A display module detection apparatus, comprising: the system comprises a display control module, an acquisition control module and an index generation module; wherein the content of the first and second substances,
the display control module is used for controlling the LED display module to be detected to be in a first display state, wherein a plurality of lamp points are arranged on the lamp point mounting surface of the LED display module to be detected;
the acquisition control module is used for controlling first image acquisition equipment to acquire an image of the LED display module to be detected in the first display state so as to obtain first image data, wherein the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected;
the display control module is also used for controlling the LED display module to be detected to be in a second display state;
the acquisition control module is further used for controlling the first image acquisition equipment to acquire an image of the LED display module to be detected in the second display state so as to obtain second image data; and
the index generation module is used for generating a plurality of quality evaluation indexes corresponding to the LED display module to be detected according to the first image data and the second image data, wherein the quality evaluation indexes comprise part or all of brightness uniformity indexes, chromaticity uniformity indexes, lamp point installation position accuracy indexes and lamp point installation surface color accuracy indexes.
8. A display module detection method is characterized by comprising the following steps:
controlling an LED display module to be detected to be in a target display state, wherein the target display state comprises the display of pictures with various colors according to a preset sequence, and a plurality of lamp points are arranged on a lamp point mounting surface of the LED display module to be detected;
controlling first image acquisition equipment to acquire an image of the LED display module to be detected in the target display state to obtain first target image data, wherein the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected;
controlling at least one second image acquisition device to acquire an image of the LED display module to be detected in the target display state to obtain at least one second target image data, wherein the at least one second image acquisition device has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected; and
and generating at least one quality evaluation index corresponding to the LED display module to be detected according to the first target image data and the at least one second target image data, wherein the at least one quality evaluation index comprises one or more of a brightness uniformity index, a chromaticity uniformity index, a lamp point mounting position accuracy index, a lamp point mounting surface color accuracy index and a light distribution curve.
9. The method according to claim 8, wherein the first photographing angle is a front photographing angle, the at least one second photographing angle is a side photographing angle, and the side photographing angle is greater than-90 degrees and less than +90 degrees.
10. The method according to claim 8 or 9, wherein the generating at least one quality assessment indicator corresponding to the LED display module to be tested according to the first target image data and the at least one second target image data comprises:
and generating a plurality of brightness uniformity indexes and/or a plurality of chromaticity uniformity indexes corresponding to the LED display module to be detected at the first shooting angle and the at least one second shooting angle according to the first target image data and the at least one second target image data.
11. A display module detection apparatus, comprising: the display control module, the acquisition control module and the index generation module; wherein
The display control module is used for controlling the LED display module to be detected to be in a target display state, wherein the target display state comprises the display of pictures with various colors according to a preset sequence, and a plurality of lamp points are arranged on a lamp point mounting surface of the LED display module to be detected;
the acquisition control module is used for controlling first image acquisition equipment to acquire an image of the LED display module to be detected in the target display state so as to obtain first target image data, wherein the first image acquisition equipment has a first shooting angle relative to the LED display module to be detected;
the acquisition control module is further used for controlling at least one second image acquisition device to acquire an image of the LED display module to be detected in the target display state so as to obtain at least one second target image data, wherein the at least one second image acquisition device has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected; and
the index generation module is used for generating at least one quality evaluation index corresponding to the LED display module to be detected according to the first target image data and the at least one second target image data, wherein the at least one quality evaluation index comprises one or more of a brightness uniformity index, a chromaticity uniformity index, a lamp point installation position accuracy index, a lamp point installation surface color accuracy index and a light distribution curve.
12. A display module inspection system, comprising:
a detection table for loading LED display module to be detected
The first image acquisition equipment has a first shooting angle relative to the LED display module to be detected;
the second image acquisition equipment has at least one second shooting angle different from the first shooting angle relative to the LED display module to be detected; and
the computer is provided with detection software and is electrically connected with the first image acquisition equipment, the at least one second image acquisition equipment and the LED display module to be detected;
wherein the computer is configured to perform the display module detecting method according to any one of claims 1 to 6 and 8 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911318769.7A CN113012607A (en) | 2019-12-19 | 2019-12-19 | Display module detection method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911318769.7A CN113012607A (en) | 2019-12-19 | 2019-12-19 | Display module detection method, device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113012607A true CN113012607A (en) | 2021-06-22 |
Family
ID=76382230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911318769.7A Pending CN113012607A (en) | 2019-12-19 | 2019-12-19 | Display module detection method, device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113012607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113689379A (en) * | 2021-07-16 | 2021-11-23 | 苏州浪潮智能科技有限公司 | LED component function test diagnosis device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014134880A1 (en) * | 2013-03-06 | 2014-09-12 | 京东方科技集团股份有限公司 | Detection method and device for backlight module defects |
| CN104279958A (en) * | 2014-10-24 | 2015-01-14 | 西安诺瓦电子科技有限公司 | LED display device space position detection method and system for guidance and correction |
| CN106409196A (en) * | 2016-11-21 | 2017-02-15 | 西安诺瓦电子科技有限公司 | LED display control card fault detection method |
| CN107065247A (en) * | 2017-06-07 | 2017-08-18 | 惠科股份有限公司 | A kind of display panel testing method, apparatus and system |
| CN107221275A (en) * | 2017-07-26 | 2017-09-29 | 昆山龙腾光电有限公司 | Display screen contrast detecting system and method |
| CN110070524A (en) * | 2019-04-03 | 2019-07-30 | 北京东舟技术股份有限公司 | A kind of intelligent terminal panel visual fault detection system |
-
2019
- 2019-12-19 CN CN201911318769.7A patent/CN113012607A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014134880A1 (en) * | 2013-03-06 | 2014-09-12 | 京东方科技集团股份有限公司 | Detection method and device for backlight module defects |
| CN104279958A (en) * | 2014-10-24 | 2015-01-14 | 西安诺瓦电子科技有限公司 | LED display device space position detection method and system for guidance and correction |
| CN106409196A (en) * | 2016-11-21 | 2017-02-15 | 西安诺瓦电子科技有限公司 | LED display control card fault detection method |
| CN107065247A (en) * | 2017-06-07 | 2017-08-18 | 惠科股份有限公司 | A kind of display panel testing method, apparatus and system |
| CN107221275A (en) * | 2017-07-26 | 2017-09-29 | 昆山龙腾光电有限公司 | Display screen contrast detecting system and method |
| CN110070524A (en) * | 2019-04-03 | 2019-07-30 | 北京东舟技术股份有限公司 | A kind of intelligent terminal panel visual fault detection system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113689379A (en) * | 2021-07-16 | 2021-11-23 | 苏州浪潮智能科技有限公司 | LED component function test diagnosis device and method |
| CN113689379B (en) * | 2021-07-16 | 2023-05-26 | 苏州浪潮智能科技有限公司 | LED component function test diagnosis device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109752394B (en) | High-precision detection method and system for defects of display screen | |
| US10646037B2 (en) | Apparatus and method for simultaneously testing a plurality of mobile devices | |
| CN107103867B (en) | Display control card detection method and device, detection system and production line | |
| CN112396999B (en) | Abnormal display block detection method, display screen fault detection method and equipment thereof | |
| CN110728947B (en) | LED display screen correction method, system and machine-readable storage medium | |
| CN104168478B (en) | Based on the video image color cast detection method of Lab space and relevance function | |
| CN103024434A (en) | Automatic test system based on image matching | |
| CN111724693B (en) | Splicing display method, device, equipment and system, terminal equipment and display unit | |
| US9161000B2 (en) | Light parameter measurement method and device, screen adjustment method and electronic device | |
| CN110458803A (en) | Frame image color cast and brightness detection method and device based on colored ribbon calibration | |
| CN108072664B (en) | Appearance detection system and method | |
| US7965884B2 (en) | System and method for testing LEDs on a motherboard | |
| CN116007750A (en) | LED detection method, device, equipment, storage medium and system | |
| CN106226033B (en) | Detect the method and device of transparent substrates transmitance | |
| CN101556250A (en) | System and method thereof for checking product quality | |
| CN113012607A (en) | Display module detection method, device and system | |
| CN111613157A (en) | Mura repair test method of display panel, display panel and display device | |
| CN113848044B (en) | Method for detecting brightness and chrominance consistency of display screen | |
| CN113012608A (en) | Display module detection method, device and system | |
| CN203323994U (en) | Optical performance detection device of liquid crystal projector | |
| CN112614451A (en) | Display module detection method, device and system | |
| CN103267630A (en) | Optical performance detection device of liquid crystal projector | |
| CN113933309A (en) | Method for retesting defects in blind hole by AOI machine | |
| CN112839221A (en) | Quantification method and quantification device for definition of display equipment under ambient light | |
| CN105049836A (en) | LED TV backlight partitioning rapid inspection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210622 |