CN110376218A - Display panel ghost detection method and device - Google Patents
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- CN110376218A CN110376218A CN201910690132.4A CN201910690132A CN110376218A CN 110376218 A CN110376218 A CN 110376218A CN 201910690132 A CN201910690132 A CN 201910690132A CN 110376218 A CN110376218 A CN 110376218A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N2021/9511—Optical elements other than lenses, e.g. mirrors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N2021/9513—Liquid crystal panels
Abstract
The invention discloses display panel ghost detection method and device.Display panel ghost detection method includes: that control display panel to be detected shows the first picture, wherein the first picture includes the image with the first grayscale value and the second grayscale value of default ID information；It is the second picture by the first screen switching, wherein the second picture includes the image of third grayscale value, wherein third grayscale value is between the first grayscale value and the second grayscale value；To using image acquisition device to the second picture timing continuous acquisition to obtain multiple detection images；Determine that the last one includes the detection image of information of identification code in Image Acquisition timing, with the ghost extinction time of determination display panel to be detected.The present invention discloses the ghost extinction time for evaluating display panel that display panel ghost detection method can be objective and accurate, provides reliable basis for the quality evaluation of display panel.
Description
Technical field
The invention belongs to field of display technology more particularly to display panel ghost detection method and device.
Background technique
Need to carry out it detection of indices before display panel shipment, wherein ghost extinction time is evaluation display
One important indicator of panel quality.After ghost refers to that display panel shows a kind of picture for a period of time, when being switched to another picture
The phenomenon that when face, previous picture has residual, can disappear after a period of time.
How accurately and effectively to detect the ghost extinction time of display panel, with the quality of objective appraisal display panel at
For current urgent problem to be solved.
Summary of the invention
The embodiment of the invention provides a kind of display panel ghost detection method and device, it is intended to accurately detect display panel
Ghost extinction time.
In a first aspect, the present invention provides a kind of display panel ghost detection method, comprising: it is aobvious to control display panel to be detected
Show the first picture, wherein the first picture includes the image with the first grayscale value and the second grayscale value of default ID information；
It is the second picture by the first screen switching, wherein the second picture includes the image of third grayscale value, and third grayscale value is located at first
Between grayscale value and the second grayscale value；Multiple detection figures are obtained to the second picture timing continuous acquisition using image acquisition device
Picture；Determine that the last one includes the detection image of default ID information in Image Acquisition timing, with determination display to be detected
The ghost extinction time of panel.
According to an aspect of the present invention, determine that the last one includes default ID information in Image Acquisition timing
Detection image, with the ghost extinction time of determination display panel to be detected, comprising: detection image is identified, to be examined
The image information of altimetric image；The image information of image be will test compared with default ID information, to determine in Image Acquisition
The last one includes the detection image of default ID information in sequence；It include the detection of default ID information according to the last one
The timestamp of image determines the ghost extinction time of display panel to be detected.
According to an aspect of the present invention, detection image is identified, to obtain the image information of detection image, packet
It includes: image procossing being carried out to detection image, to increase the contrast of detection image；To treated, detection image is identified,
To obtain the image information of detection image.
According to an aspect of the present invention, using image acquisition device to the second picture timing continuous acquisition to obtain multiple inspections
Altimetric image, comprising: the position for adjusting image acquisition device, make the camera face display panel to be detected of image acquisition device goes out light
Face；It is continuously taken pictures using image acquisition device to display panel timing to be detected, obtains original image；Original image is cut
It cuts out, to obtain detection image.
According to an aspect of the present invention, using image acquisition device to the second picture timing continuous acquisition to obtain multiple inspections
Altimetric image, comprising: continuously taken pictures using image acquisition device to display panel timing to be detected, obtain original image；To original graph
As carrying out Slant Rectify；The image of Slant Rectify is cut out, to obtain detection image.
According to an aspect of the present invention, image acquisition device includes camera, camera resolution ratio be greater than it is to be detected
The resolution ratio of display panel；Preferably, the resolution ratio of the camera of image acquisition device is greater than or equal to display panel to be detected
3 times of resolution ratio.
According to an aspect of the present invention, image acquisition device is camera, and the time for exposure that camera is taken pictures is less than adjacent two
The interval time of detection image；Preferably, the time for exposure was less than 1 second.
According to an aspect of the present invention, the first grayscale value be 255, the second grayscale value be 0, third grayscale value be 48~
128。
According to an aspect of the present invention, it controls in the step of display panel to be detected shows the first picture, the first picture
Show scheduled duration；Preferably, scheduled duration is 1 minute to 10 minutes.
Second aspect, the present invention provide a kind of display panel ghost detection device, comprising: control module is configured as controlling
Make display panel to be detected and show the first picture, wherein the first picture include have default ID information the first grayscale value and
The image of second grayscale value；Switching module is configured as the first screen switching being the second picture, wherein the second picture includes
The image of third grayscale value, third grayscale value is between the first grayscale value and the second grayscale value；Module is obtained, benefit is configured as
With image acquisition device to the second picture timing continuous acquisition to obtain multiple detection images；Determining module is configured to determine that
The last one includes the detection image of information of identification code in Image Acquisition timing, is disappeared with the ghost of determination display panel to be detected
Time.
In the embodiment of the present invention, show that the first picture, the first picture include having in advance by controlling display panel to be detected
If the first grayscale value of information of identification code and the image of the second grayscale value, then by the first screen switching be to include with third grayscale
Second picture of the image of value, to the second picture timing continuous acquisition to obtain multiple detection images, determination is adopted in image later
Collect the last one detection image comprising information of identification code in timing, with the ghost extinction time of determination display panel to be detected.
The ghost extinction time of evaluation display panel that can be objective and accurate, provides reliable basis for the quality evaluation of display panel.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of flow chart of display panel ghost detection method of the embodiment of the present invention；
Fig. 2 is the schematic diagram that display panel to be detected shows the first picture；
Fig. 3 is the schematic diagram that display panel to be detected shows the second picture；
Fig. 4 is the schematic diagram that the detection image obtained after Image Acquisition is carried out to the second picture；
Fig. 5 is the flow chart of step 300 in a kind of embodiment of method shown in Fig. 1；
Fig. 6 is the flow chart of step 300 in the another embodiment of method shown in Fig. 1；
Fig. 7 is the flow chart of step 400 in a kind of embodiment of method shown in Fig. 1；
Fig. 8 is a kind of structural schematic diagram of display panel ghost detection device of the embodiment of the present invention.
Appended drawing reference:
The first picture of 10-；11- has the image of default ID information；The subelement of the first grayscale value of 11a-；11b-
The subelement of two grayscale values；The second picture of 20-；30- detection image.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, many details are proposed, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case where not needing some details in these details.Below to implementation
The description of example is used for the purpose of providing by showing example of the invention and better understanding of the invention.In attached drawing and following
Description in, at least part of known features and technology are not shown, unnecessary fuzzy to avoid causing the present invention；
Also, for clarity, may be exaggerated the size of part-structure.In addition, feature described below, structure or characteristic can be with
It is incorporated in one or more embodiments in any suitable manner.
The noun of locality of middle appearance described below is direction shown in figure, is not to the specific of the embodiment of the present invention
Structure is defined.In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " peace
Dress ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be to be connected directly, can also be indirectly connected.For the ordinary skill in the art, visual concrete condition understands above-mentioned
The concrete meaning of term in the present invention.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.Embodiment is described in detail below in conjunction with attached drawing.
It is retouched in detail below with reference to display panel ghost detection method and device of the Fig. 1 to Fig. 8 to the embodiment of the present invention
It states.
Display panel in the present embodiment can be liquid crystal display panel (Liquid Crystal Display, LCD),
It can be the display panel or micro- light-emitting diodes of Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED)
The display panel of (Micro-LED) is managed, for the type of display panel, the present invention is with no restrictions.
Refering to Figure 1, Fig. 1 shows the display panel ghost detection method flow chart of the embodiment of the present invention, this reality
The display panel ghost detection method for applying example includes:
Step 100, it controls display panel to be detected and shows the first picture.
It please refers to shown in Fig. 2, Fig. 2 shows the schematic diagrames that display panel to be detected shows the first picture.The present embodiment
First picture 10 includes the image 11 with default ID information, and the image 11 with default ID information includes the first ash
The subelement 11a of the rank value and subelement 11b of the second grayscale value.Namely in the first picture 10, the subelement of the first grayscale value
The image 11 with default ID information is collectively formed in the subelement 11b of 11a and the second grayscale value, for the first grayscale value
The arrangement mode present invention of the subelement 11b of subelement 11a and the second grayscale value has in advance with no restrictions, as long as can arrange and be formed
If the image 11 of information of identification code.Image 11 with default ID information is shown in display panel to be detected
The position present invention also with no restrictions, for example, the center of display panel to be detected can be located at.
It step 200, is the second picture by the first screen switching.
It please refers to shown in Fig. 3, Fig. 3 shows the schematic diagram that display panel to be detected shows the second picture.The present embodiment
Second picture 20 includes the image of third grayscale value, wherein third grayscale value is between the first grayscale value and the second grayscale value.
Step 300, using image acquisition device to the second picture timing continuous acquisition to obtain multiple detection images.
It please refers to shown in Fig. 4, Fig. 4 shows the signal that the detection image obtained after Image Acquisition is carried out to the second picture
Figure.Detection image 30 is the first picture 10 during being switched to the second picture 20 completely, using image acquisition device to be checked
Survey the image that the picture shown in display panel is acquired acquisition.In this process, have included in detection image 30
The image 11 of default ID information fades away.In the step, the interval duration for acquiring multiple detection images 30 can basis
Demand is set, with no restrictions to this present invention.Such as an Image Acquisition can be carried out at interval of certain time length, it is exemplary
, which can be 1 second.Due to switching the initial stage, ghost phenomena is more obvious, accordingly it is also possible to continuously adopting
During collection, it is gradually reduced the interval of adjacent Image Acquisition twice, so as to reduce times of collection in the acquisition initial stage.Also
Can Image Acquisition be carried out again after a certain period of time in switching based on experience value.
Step 400, determine that the last one includes the detection image of default ID information in Image Acquisition timing, with true
Determine ghost extinction time.
In the multiple detection images 30 obtained, according to Image Acquisition timing, the first picture 11 in detection image 30 is gradually
It disappears, can determine that last includes the detection image 30 of default ID information, the then detection after the detection image 30
It no longer include default ID information in image 30, the detection image 30 that can include default ID information for the last one is right
The time difference of the time and switching time started answered are as ghost extinction time.
In the present embodiment, show that the first picture 10, the first picture 10 include having to know by controlling display panel to be detected
First grayscale value of other code information and the image of the second grayscale value, then the first picture 10 is switched to including with third grayscale value
Image the second picture 20, to 20 timing continuous acquisition of the second picture to obtain multiple detection images 30, later determination scheming
As the last one detection image 30 comprising default ID information in acquisition timing, with the ghost of determination display panel to be detected
Extinction time.The ghost extinction time of evaluation display panel that can be objective and accurate, for the quality evaluation of display panel, provide can
By foundation.
In some alternative embodiments, in step 100, the first picture 10 shows preset duration.First picture 10 is aobvious
The the time shown the long more is conducive to the accuracy of ghost test, in the case where taking into account testing efficiency, illustratively, preset duration
It can be 1 minute to 10 minutes.
In some alternative embodiments, the first grayscale value and the second grayscale value can show for display panel to be detected
Show the maximum value and minimum value of grayscale, to improve the accuracy of display panel image retention detection.First grayscale value can be 255,
Second grayscale value can be 0, so that the image 11 with default ID information that the first picture 10 is included is by black
The identification code figure that unit and white subelement are constituted.The identification code figure can for two dimensional code, bar code etc. any one or
Several figures that can recognize that presupposed information.Such as can be two-dimension code pattern, due to the two-dimension code pattern both side of may include
Frame element, and include stick elements, it can effectively reflect actual display panel service condition.And two-dimension code pattern black and white is handed over
It is more at boundary, it as long as ghost does not disappear, that is, may recognize that default two-dimensional barcode information, avoid error brought by visual valuation.
In some alternative embodiments, in step 200, the second picture 20 includes the image of third grayscale value, in order to survey
Examination is convenient, and the second picture 20 of display panel to be detected is that the image of single third grayscale value namely 20 entirety of the second picture are shown
It is shown as the image of third grayscale value.
Wherein, third grayscale value can be 48~128.Preferably, it can choose in the first grayscale value and the second grayscale value
Between numerical value as third grayscale value, it is ensured that during ghost fades away, the first grayscale value and the second grayscale value are equal
Switch to grayscale value between the two, avoid the one of them of the first grayscale value of third grayscale value distance and the second grayscale value compared with
Closely, in handoff procedure, the subelement of one of grayscale value is switched to gray scale image and the subelement of another grayscale value also
Fail to be switched to gray scale image, influences the accuracy of detection.
In some embodiments, it please refers to shown in Fig. 5, step 300 can specifically include following steps:
Step 301, the position for adjusting image acquisition device makes the light-emitting surface of image acquisition device face display panel to be detected.
In the step, the light-emitting surface namely image acquisition device face display surface to be detected of image acquisition device face display panel to be detected
Second picture 20 shown by plate, can guarantee its acquisition image will not run-off the straight, convenient for the processing of subsequent image.
Step 302, it is continuously taken pictures using image acquisition device to display panel timing to be detected, obtains original image.The step
It also include some other background images other than comprising the second picture 20 in original image in rapid, for example, display panel
The ambient image of framing image and display panel local environment.
Step 303, original image is cut out, to obtain detection image.In the step, original image is cut
It cuts out, such as function progress can be cut out by the imcrop of MATLAB software, to remove the background image unrelated with detection image.
In other optional embodiments, please refer to shown in Fig. 6, step 300 can specifically include following steps:
Step 310, it is continuously taken pictures using image acquisition device to display panel timing to be detected, obtains original image.The step
It also include some other background images other than comprising the second picture 20 in original image in rapid, for example, display panel
The ambient image of framing image and display panel local environment.
Step 320, Slant Rectify is carried out to original image.In the step, it can specifically pass through MATLAB software
Hought the rectification function carries out, in order to the processing of subsequent image.
Step 330, the image of Slant Rectify is cut out, to obtain detection image.In the step, tiltedly corrected to cutting
Image is cut out, such as function progress can be cut out by the imcrop of MATLAB software, unrelated with detection image to remove
Background image.
The image acquisition device of above-described embodiment may include camera, in some alternative embodiments, point of camera
Resolution is greater than the resolution ratio of display panel to be detected, to guarantee the collection effect of detection image.Illustratively, the resolution of camera
Rate is greater than or equal to 3 times of the resolution ratio of display panel to be detected.
The image acquisition device of above-described embodiment can be camera, carry out Image Acquisition to the second picture 20 using camera to obtain
Detection image is taken, the time for exposure that camera is taken pictures is less than the interval time of adjacent two detection images.It is imitated to avoid acquisition is influenced
Rate.Illustratively, the time for exposure can be less than 1 second.
In some alternative embodiments, it please refers to shown in Fig. 7, step 400 can specifically include following steps:
Step 410, detection image is identified, to obtain the image information of detection image.In the step, such as can be with
By identifying that equipment identifies detection image, to obtain the image information of detection image.
Step 420, it will test the image information of image compared with default ID information, to determine in Image Acquisition timing
The last one interior detection image comprising default ID information.It is understood that in the detection image 30 that acquisition obtains,
Before ghost disappears, the image information identified is consistent with default ID information；If ghost disappears, detection image 30 is carried out
Identification, then can not get default ID information.In acquisition timing, it can determine that the last one believes comprising default ID
The detection image 30 of breath.
Step 430, include the timestamp of the detection image of default ID information according to the last one, determine to be detected aobvious
Show the ghost extinction time of panel.The multiple detection images 30 acquired in step 300 have its corresponding timestamp, due to
The last one detection image 30 comprising default ID information, and the available detection image can be determined in step 420
30 timestamp includes no longer default ID information in the detection image 30 after the detection image 30, when can be by this
Between stab corresponding duration as ghost extinction time.
In some alternative embodiments, step 410, detection image is identified, to obtain the image of detection image
Information can specifically include: handle detection image, to increase the contrast of detection image；To treated image into
Row identification, to obtain the image information of detection image.
In the present embodiment, the processing method that can be enhanced using optical enhancement and/or computer, optical enhancement for example can be with
Using Edge-enhancement and ratio processing method etc., computer enhancing is such as can enhance method and spatial filtering method using contrast.
It, can be to avoid caused by due to light environment or body surface be reflective etc. by carrying out enhancing processing to detection image 30
The detection image of acquisition is ineffective, and then influences image recognition effect, the final judgement for influencing ghost extinction time.
In above-described embodiment, to the acquisition and identification of detection image 30 the step of, which can separate, to be carried out, that is, complete it is more
A detection image acquires and obtains and then carry out the identification step to detection image 30.Without switching equipment, can be improved
Image Acquisition, acquisition and the efficiency of identification.
In above-described embodiment, progress can also be intersected to the step of acquisition and identification of detection image 30, that is, can be with every
Acquisition carries out the identification of the detection image 30 of these numbers, for example, can be with every with after the detection image 30 for obtaining default number
After 5 detection images 30 of acquisition and acquisition, that is, carry out the identification of these detection images 30.Preferably, one can be obtained with every acquisition
Detection image 30 is opened, i.e. progress image recognition.It can timely be identified to avoid the invalid detection image 30 of acquisition identification excessively
Last includes the detection image 30 of default ID information out.
The present invention also provides a kind of display panel ghost detection device, display panel ghost detection device and above-mentioned implementation
The display panel ghost detection method of example is corresponding.It please refers to shown in Fig. 8, Fig. 8 shows a kind of display of the embodiment of the present invention
The structural schematic diagram of panel ghost detection device.The display panel ghost detection device 800 of the present embodiment includes control module
810, switching module 820, acquisition module 830 and determining module 840.
Display module 810, which is configured as controlling display panel to be detected, shows the first picture, wherein the first picture includes tool
There are the first grayscale value of default ID information and the image of the second grayscale value.
Switching module 820 is configured as the first screen switching being the second picture, wherein the second picture includes third ash
The image of rank value, third grayscale value is between the first grayscale value and the second grayscale value.
Module 830 is obtained, is configured as using image acquisition device to the second picture timing continuous acquisition to obtain multiple inspections
Altimetric image.
Determining module 840 is configured to determine that in Image Acquisition timing, the last one includes default ID information
Detection image, to determine ghost extinction time.
In the present embodiment, display panel to be detected is controlled by control module 810 and shows that the first picture, the first picture include
The image of the first grayscale value and the second grayscale value with information of identification code, then cut the first picture 10 by switching module 820
It is changed to the second picture 20 of the image including third grayscale value, it is fixed to the second picture 20 using image acquisition device to obtain module 830
When continuous acquisition to obtain multiple detection images 30, last determining module 840 determines that the last one is wrapped in Image Acquisition timing
The detection image 30 of the information containing default ID, with the ghost extinction time of determination display panel to be detected.It can be objective and accurate
Evaluation display panel ghost extinction time, provide reliable basis for the quality evaluation of display panel.
In some alternative embodiments, determining module 840 is configured to: detection image is identified, with
Obtain the image information of detection image；The image information of image be will test compared with default ID information, to determine in image
Acquire the last one detection image comprising default ID information in timing；It include default ID information according to the last one
Detection image timestamp, determine the ghost extinction time of display panel to be detected.
In some alternative embodiments, determining module 840 is configured to: being carried out at image to detection image
Reason, to increase the contrast of detection image；To treated, detection image is identified, to obtain the image letter of detection image
Breath.
In some alternative embodiments, it obtains module 830 to be configured to: adjusting the position of image acquisition device,
Make the light-emitting surface of the camera face display panel to be detected of image acquisition device；Using image acquisition device to display panel to be detected
Timing is continuously taken pictures, and original image is obtained；Original image is cut out, to obtain detection image.
In some alternative embodiments, it obtains module 830 to be configured to: using image acquisition device to be detected
Display panel timing is continuously taken pictures, and original image is obtained；Slant Rectify is carried out to original image；The image of Slant Rectify is carried out
It cuts out, to obtain detection image.
In some alternative embodiments, image acquisition device includes camera, and the resolution ratio of camera is greater than to be detected aobvious
Show the resolution ratio of panel；Preferably, the resolution ratio of the camera of image acquisition device is greater than or equal to point of display panel to be detected
3 times of resolution.
In some alternative embodiments, image acquisition device is camera, and it is adjacent that the time for exposure that camera is taken pictures is less than acquisition
The interval time of two detection images；Preferably, the time for exposure was less than 1 second.
In some alternative embodiments, the first grayscale value be 255, the second grayscale value be 0, third grayscale value be 48~
128。
In some alternative embodiments, control module 810 controls display panel to be detected and shows that the first picture is shown in advance
Timing is long.Preferably, scheduled duration is 1 minute to 10 minutes.
Due to the embodiment phase of the embodiment and above-mentioned display panel ghost detection method of display panel ghost detection device
It is corresponding, there is the beneficial effect with the display panel testing method of above-described embodiment, details are not described herein.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (10)
1. a kind of display panel ghost detection method characterized by comprising
It controls display panel to be detected and shows the first picture, wherein first picture includes having default ID information
The image of first grayscale value and the second grayscale value；
It is the second picture by first screen switching, wherein second picture includes the image of third grayscale value, and described the
Three grayscale values are between first grayscale value and second grayscale value；
Using image acquisition device to the second picture timing continuous acquisition to obtain multiple detection images；
Determine that the last one includes detection image of the default ID information in Image Acquisition timing, with determine it is described to
Detect the ghost extinction time of display panel.
2. display panel ghost detection method according to claim 1, which is characterized in that the determination is in Image Acquisition
The last one includes the detection image of the default ID information in sequence, is disappeared with the ghost of the determination display panel to be detected
Lose the time, comprising:
The detection image is identified, to obtain the image information of the detection image；
By the image information of the detection image compared with the default ID information, to determine in Image Acquisition timing most
The latter includes the detection image of the default ID information；
Include the timestamp of the detection image of the default ID information according to the last one, determines the display surface to be detected
The ghost extinction time of plate.
3. display panel ghost detection method according to claim 2, which is characterized in that it is described to the detection image into
Row identification, to obtain the image information of the detection image, comprising:
Image procossing is carried out to the detection image, to increase the contrast of the detection image；
To treated, detection image is identified, to obtain the image information of the detection image.
4. display panel ghost detection method according to claim 1, which is characterized in that described to utilize image acquisition device pair
The second picture timing continuous acquisition is to obtain multiple detection images, comprising:
The position for adjusting image acquisition device makes the light-emitting surface of display panel to be detected described in described image collector face；
It is continuously taken pictures using described image collector to the display panel timing to be detected, obtains original image；
The original image is cut out, to obtain detection image.
5. display panel ghost detection method according to claim 1, which is characterized in that described to utilize image acquisition device pair
The second picture timing continuous acquisition is to obtain multiple detection images, comprising:
It is continuously taken pictures using image acquisition device to the display panel timing to be detected, obtains original image；
Slant Rectify is carried out to the original image；
The image of Slant Rectify is cut out, to obtain detection image.
6. display panel ghost detection method according to claim 4 or 5, which is characterized in that described image collector packet
Camera is included, the resolution ratio of the camera is greater than the resolution ratio of the display panel to be detected；
Preferably, the resolution ratio of the camera is greater than or equal to 3 times of the resolution ratio of the display panel to be detected.
7. display panel ghost detection method according to claim 4 or 5, which is characterized in that described image collector is
Camera, the time for exposure that the camera is taken pictures are less than the interval time of adjacent two detection images；
Preferably, the time for exposure was less than 1 second.
8. display panel ghost detection method according to claim 1, which is characterized in that first grayscale value is 255,
Second grayscale value is 0, and the third grayscale value is 48~128.
9. display panel ghost detection method according to claim 1, which is characterized in that the control display surface to be detected
Plate shows in the step of the first picture that first picture shows scheduled duration；
Preferably, the scheduled duration is 1 minute to 10 minutes.
10. a kind of display panel ghost detection device characterized by comprising
Control module, is configured as controlling display panel to be detected and shows the first picture, wherein first picture includes having
First grayscale value of default ID information and the image of the second grayscale value；
Switching module is configured as first screen switching being the second picture, wherein second picture includes third ash
The image of rank value, the third grayscale value is between first grayscale value and second grayscale value；
Module is obtained, is configured as using image acquisition device to the second picture timing continuous acquisition to obtain multiple detection figures
Picture；
Determining module is configured to determine that in Image Acquisition timing, the last one includes the detection figure of the information of identification code
Picture, with the ghost extinction time of determination display panel to be detected.
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