CN110243336A - Shield body warpage detection method - Google Patents
Shield body warpage detection method Download PDFInfo
- Publication number
- CN110243336A CN110243336A CN201910695761.6A CN201910695761A CN110243336A CN 110243336 A CN110243336 A CN 110243336A CN 201910695761 A CN201910695761 A CN 201910695761A CN 110243336 A CN110243336 A CN 110243336A
- Authority
- CN
- China
- Prior art keywords
- screen body
- angle
- warpage
- caused
- group
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Abstract
The present invention provides a kind of screen body warpage detection methods characterized by comprising judges the side of the screen body with the presence or absence of the deformation as caused by screen body warpage；Judge the angle of the screen body with the presence or absence of the deformation as caused by screen body warpage；And when at least one side of the screen body has at least one angle of deformation or the screen body as caused by screen body warpage in the presence of deforming as caused by screen body warpage, determine that there are warpages for the screen body.It is possible thereby to accurately determine that screen body be in warped state, it is mistaken for shielding volume defect to avoid shield body warpage, False Rate is effectively reduced, non-defective unit is mistaken for material waste caused by defective products by reduction.
Description
Technical field
The present invention relates to field of display technology, and in particular to screen body warpage detection method.
Background technique
(cell test) is tested in the screen body of the manufacturing process of FPD (Flat Panel Display, two-d display panel)
In process section, since the glass substrate wrapping or screen body of screen body are not adsorbed on absorption platform completely, stuck up to shield body and be in
Curved state, screen body warped state can be mistaken for screen volume defect, be defective products so as to cause body is shielded by erroneous detection.
Summary of the invention
In view of this, the embodiment of the invention provides screen body warpage detection method, to solve in existing technology in screen body
The problem of screen body warpage is mistaken for screen volume defect when defects detection.
A kind of screen body warpage detection method that one embodiment of the invention provides, comprising: judge whether the side of the screen body deposits
It is being deformed as caused by screen body warpage；Judge the angle of the screen body with the presence or absence of the deformation as caused by screen body warpage；And work as institute
There is at least one angle of deformation or the screen body as caused by screen body warpage and exist by screen body at least one side for stating screen body
Caused by warpage when deformation, determine that there are warpages for the screen body.It is possible thereby to accurately determine that screen body is in warped state, thus
Body warpage will be shielded by, which avoiding, is mistaken for screen volume defect, saves artificial reinspection resource, avoids material waste that False Rate is effectively reduced, reduce
Non-defective unit is mistaken for material waste caused by defective products.
In one embodiment, the side of the judgement screen body, which whether there is to deform as caused by screen body warpage, includes:
Continuously choose at 1 points on the side of the viewing area of the screen body；According to first group continuous two in described 1 points
Point, which calculates, obtains first slope；It is calculated according to second group of continuous two o'clock in described 1 points and obtains the second slope；It calculates
The absolute value of the first slope and the difference of second slope；And the difference when the first slope and second slope
The absolute value of value is greater than first threshold and is less than second threshold, determines that the side of the screen body has the change as caused by screen body warpage
Shape.In this manner can be simple and quick judge shield body side whether can have the deformation as caused by screen body warpage.
In one embodiment, the distance of first group of continuous point-to-point transmission is at a distance from second group of continuous point-to-point transmission
It is identical；In second group of continuous two o'clock close to first group of continuous two o'clock a little with leaned in first group of continuous two o'clock
The distance of any of nearly second group of continuous two o'clock is regular length.The side for further increasing judgement screen body whether there is by shielding
The accuracy deformed caused by body warpage.
In one embodiment, first group of continuous two o'clock and second group of continuous two o'clock have a common ground.It can
To improve the accuracy of first slope Yu the second slope.To which the side for further increasing judgement screen body whether there is is stuck up by screen body
The accuracy deformed caused by bent.
In one embodiment, the angle of the judgement screen body, which whether there is to deform as caused by screen body warpage, includes；
It determines the angle inflection point of the viewing area of the screen body: choosing a bit on the side for the viewing area being connected with the angle inflection point；With institute
It states and a little constructs the first predeterminable area for starting point: calculating the angular region corresponding with the angle inflection point in first predeterminable area
The area in domain；And when the value of the area is in first preset range, determines that the angle of the screen body exists and stuck up by screen body
Deformation caused by bent.Whether the angle for judging to shield body that in this manner can be simple and quick can exist as caused by screen body warpage
Deformation.
In one embodiment, when all sides of the screen body, which are all not present, to be deformed as caused by screen body warpage, then sentence
Break the screen body angle with the presence or absence of the deformation as caused by screen body warpage.Improve working efficiency and can be to avoid the missing inspection of warpage.
In one embodiment, first group of continuous two o'clock and second group of continuous two o'clock have a common ground；Its
In, the angle inflection point of the viewing area of the determination screen body includes: the difference when the first slope and second slope
Absolute value is greater than or equal to second threshold, determines that the common ground is the angle inflection point；The selection is connected with the angle inflection point
On the side of the viewing area connect a little include: choose described first group continuously organize the non-angle inflection point in two o'clock a bit；Or choosing
Take described second group continuously organize the non-angle inflection point in two o'clock a bit.
In one embodiment, calculating angular zone corresponding with the angle inflection point in first predeterminable area
Area；Include: the angular zone and non-angular zone in the first predeterminable area described in binary conversion treatment: and according to binaryzation
As a result, calculating the area of the angular zone.The area for calculating angular zone by computer binary conversion treatment result is more acurrate and more
It is convenient.
In one embodiment, further includes: obtain the side of the viewing area of the screen body；Preferably, comprising: light the screen
Body；Obtain the image of the screen body: empty burnt processing described image obtains image after empty burnt processing: void Jiao Chu described in binary conversion treatment
Image after reason；And according to binarization result, obtain the side of the viewing area of the screen body.The side of judgement screen body whether there is by shielding
The angle of deformation caused by body warpage and judgement screen body whether there is to be deformed as caused by screen body warpage, be all need know it is aobvious
Show and carry out on the basis of the side in area, the precision of judgement screen body warpage further can be improved in the side for obtaining viewing area.
In one embodiment, the screen body is rectangle screen body, the method also includes: obtain the viewing area of the screen body
Reference side length and reference angle angle；According to the orthographic projection of the viewing area of the screen body in the horizontal plane, it is fitted the screen body
The side of viewing area；And obtain the fitting side length and fitting angle angle of screen body viewing area；Wherein, the judgement screen body
Side with the presence or absence of the deformation as caused by screen body warpage include: calculate it is described referring to the exhausted of side length and the difference for fitting side length
To value to obtain the first absolute value；And when first absolute value be greater than third threshold value, determine the screen body side exist by
Shield deformation caused by body warpage；It includes: to calculate that the angle of the judgement screen body, which whether there is the deformation as caused by screen body warpage,
The absolute value of the reference angle angle and the difference for fitting angle angle is to obtain the second absolute value；And work as described second absolutely
4th threshold value is greater than to value, determines that the angle of the screen body has the deformation as caused by screen body warpage.It is possible thereby to accurately determine
Screen body be in warped state, so that avoiding shield body warpage is mistaken for screen volume defect, saves and manually rechecks resource, avoids material wave
Take.
Screen body warpage detection method provided in an embodiment of the present invention whether there is by the side of judgement screen body by screen body warpage
Caused deformation, and the angle of judgement screen body whether there is the deformation as caused by screen body warpage, therefore, it is determined that screen body whether there is
Warpage.When at least one angle that at least one side of screen body has the deformation as caused by screen body warpage or shields body exists by screen body
Deformation, determines that there are warpages for the screen body caused by warpage.It is possible thereby to accurately determine that screen body is in warped state, to keep away
Body warpage will be shielded by, which exempting from, is mistaken for screen volume defect, and False Rate is effectively reduced, reduces non-defective unit being mistaken for material caused by defective products
Waste.
Detailed description of the invention
Fig. 1 show a kind of flow diagram of screen body warpage detection method of one embodiment of the invention offer.
Fig. 2, which is shown in a kind of screen body warpage detection method of one embodiment of the invention offer, judges whether the side for shielding body deposits
In the flow diagram of the deformation as caused by screen body warpage.
Fig. 3 show the position that three points are continuously chosen in a kind of screen body warpage detection method of one embodiment of the invention offer
Set schematic diagram.
Fig. 4 show the position that four points are continuously chosen in a kind of screen body warpage detection method of one embodiment of the invention offer
Set schematic diagram.
Fig. 5 show the flow diagram of the further embodiment of embodiment illustrated in fig. 2.
Fig. 6 show the flow diagram of the further embodiment of embodiment illustrated in fig. 5.
Fig. 7, which is shown in a kind of screen body warpage detection method of one embodiment of the invention offer, judges whether the angle for shielding body deposits
In the flow diagram of the deformation as caused by screen body warpage.
Fig. 8 show in a kind of screen body warpage detection method of one embodiment of the invention offer and constructs the first predeterminable area
Position view.
Fig. 9 show in a kind of screen body warpage detection method of one embodiment of the invention offer and calculates in the first predeterminable area
The flow diagram of the area of interior angular zone corresponding with angle inflection point.
Figure 10 show a kind of flow diagram of screen body warpage detection method of one embodiment of the invention offer.
Figure 11 show the viewing area that screen body is obtained in a kind of screen body warpage detection method of one embodiment of the invention offer
Side flow diagram.
Figure 12 show a kind of flow diagram of screen body warpage detection method of one embodiment of the invention offer.
Specific embodiment
As described in background, existing in the prior art that screen body warpage is mistaken for screen body when shielding volume defect detection
The technical issues of defect.Inventor the study found that occur the reason of this problem be it is as follows: existing screen volume defect detect
It in technology, after lighting screen body, takes pictures right above screen body, defect whether there is according to captured picture judgement screen body.With
Picture captured by lower two kinds of situations is not easily distinguishable: the side surrounding for shielding the viewing area of body is in picture captured by warped state,
And with Mura, (Mura title derives from Japanese word to the side surrounding of the viewing area of screen body, panel flaw is refered in particular to, for characterizing
When panel is shown with constant luminance, viewing area it is uneven) or the screen volume defect such as dim spot captured by picture.Cause to shield
Body warpage is mistaken for screen volume defect.To solve the above-mentioned problems, inventor by the side of judgement screen body the study found that whether there is
It is deformed as caused by screen body warpage, and the angle of judgement screen body whether there is the deformation as caused by screen body warpage, to judge to shield
Body whether there is warpage.When at least one side of screen body has the deformation as caused by screen body warpage or shields at least one angle of body
It is deformed in the presence of as caused by screen body warpage, determines that there are warpages for screen body.It is possible thereby to accurately determine that screen body is in warped state,
It is mistaken for screen volume defect to avoid to shield body warpage, False Rate is effectively reduced, non-defective unit is mistaken for caused by defective products by reduction
Material waste.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Fig. 1 show a kind of flow diagram of screen body warpage detection method of one embodiment of the invention offer.Such as Fig. 1 institute
Show, this method comprises the following steps.
Step 101: the side of judgement screen body whether there is to be deformed as caused by screen body warpage；
Specifically, compared with screen body is in non-warped state, shape can occur for the side for shielding body when screen body is in warped state
Become.Judge that the side for shielding body whether there is the deformation as caused by screen body warpage and may determine that whether screen body is in warped state.
It should be appreciated that it is also to shield firmly that screen body, which can be flexible screen, when shielding body is flexible screen, due to flexible screen self reason
Or the reasons such as absorption platform adsorption capacity deficiency, flexible screen are easy to be in warped state.When shielding body is to shield firmly, hard panel glass base
Plate can cause to shield body warpage.The embodiment of the present invention is that flexible screen or hard screen are not specifically limited to screen body.
Step 102: the angle of judgement screen body whether there is to be deformed as caused by screen body warpage；
Specifically, compared with screen body is in non-warped state, shape can occur for the angle for shielding body when screen body is in warped state
Become.Judge that the angle for shielding body whether there is the deformation as caused by screen body warpage and may determine that whether screen body is in warped state.
It should be appreciated that being tool there are four when the rectangle screen body of fillet when shielding body, then angle is fillet.When screen body is other abnormal shapes
Screen, angle are also possible to angle, and the diagonal concrete type of the embodiment of the present invention is without limitation.
Step 103: when at least one side of screen body has at least one of the deformation as caused by screen body warpage or screen body
In the presence of screen body when deforming as caused by screen body warpage, is determined, there are warpages at angle；
Specifically, deforming as caused by screen body warpage when at least one side of screen body exists, determine that there are warpages for screen body.
It is deformed as caused by screen body warpage when at least one angle of screen body exists, determines that there are warpages for screen body.When at least one of screen body
Side exists to be deformed as caused by screen body warpage, while being deformed as caused by screen body warpage when at least one angle of screen body exists, and is sentenced
Surely there are warpages for screen body.
It will be appreciated that though this method is described with sequence of steps shown in Fig. 1, but this and should not be construed can only be according to
Sequence of steps shown in Fig. 1 realizes this method.As long as step 103 is in step 101 and step 102 later, the present invention is implemented
Example is not specifically limited the execution sequence of step 101 and step 102.
A kind of screen body warpage detection method provided in an embodiment of the present invention whether there is by the side of judgement screen body by screen body
Deformation caused by warpage, and the angle of judgement screen body are deformed with the presence or absence of as caused by screen body warpage, to judge whether shield body
There are warpages.When screen body at least one side exist as caused by screen body warpage deformation or shield body at least one angle exist by
Shield deformation caused by body warpage, determines that there are warpages for screen body.It is possible thereby to accurately determine that screen body is in warped state, to keep away
Body warpage will be shielded by, which exempting from, is mistaken for screen volume defect, and False Rate is effectively reduced, reduces non-defective unit being mistaken for material caused by defective products
Waste.
Fig. 2, which is shown in a kind of screen body warpage detection method of one embodiment of the invention offer, judges whether the side for shielding body deposits
In the flow diagram of the deformation as caused by screen body warpage.Fig. 3 show a kind of screen body warpage of one embodiment of the invention offer
The position view of three points is continuously chosen in detection method.A kind of screen body that Fig. 4 show one embodiment of the invention offer is stuck up
The position view of four points is continuously chosen in bent detection method.As shown in Fig. 2, step 101: the side of judgement screen body whether there is
It deforms, includes the following steps: as caused by screen body warpage
Step 1011: continuously choosing at 1 points on the side of the viewing area of screen body；
Specifically, the screen area Ti You AA (Active Area, viewing area) and the non-area AA (Non-Active Area, it is non-aobvious
Show area) composition.In Cell test process section, viewing area be can be lit.At least three are continuously chosen on the side of viewing area
Point, referring to does not have others selected points between every two point in 1 points of selection.It should be appreciated that in the Bian Shanglian of screen body
It is continuous to choose at 1 points, it can be 3 points, 4 points, 5 points and 6 points etc., as long as the point chosen is continuous and extremely
It is 3 less, the embodiment of the present invention is not specifically limited the number of the continuous point for choosing at 1 points.
Step 1012: being calculated according to first group of continuous two o'clock in 1 points and obtain first slope；
Step 1013: being calculated according to second group of continuous two o'clock in 1 points and obtain the second slope；
Specifically, two o'clock determines straight line, after determining straight line, coordinate system is established, according to the seat of two o'clock in coordinate system
Mark, which calculate, obtains slope.
Three points are continuously chosen if should be appreciated that, as shown in figure 3, so first group of continuous two o'clock A1 and A2 and second
Group continuous two o'clock A2 and A3 has a common ground.If four points continuously chosen, as shown in figure 4, so first group continuous two
Point can be the 1st point A1 and the 2nd point A2, and first group of continuous two o'clock is also possible to the 1st point A1 and the 3rd point A3.As long as continuously selecting
It can choose out first group of continuous two o'clock and second group of continuous two o'clock, the embodiment of the present invention pair in 1 points taken
The selection mode of first group of continuous two o'clock and second group of continuous two o'clock is not specifically limited in 1 points.As long as can build
Vertical coordinate system and the coordinate for obtaining each point, the embodiment of the present invention is to the method for specifically establishing coordinate system and obtains point
Sit calibration method without limitation.
Step 1014: calculating the absolute value of the difference of first slope and the second slope；
Step 1015: when the absolute value of first slope and the difference of the second slope is greater than first threshold and less than the second threshold
Value determines that the side of screen body exists and deforms as caused by screen body warpage；
Specifically, when the absolute value of first slope and the difference of the second slope is less than or equal to first threshold, first group of company
Continuous two o'clock and second group of continuous two o'clock be considered as it is conllinear, shielding the side of body, there is no the deformations as caused by screen body warpage.When
The absolute value of the difference of one slope and the second slope is greater than first threshold and is less than second threshold, first group of continuous two o'clock and second
The continuous two o'clock of group be considered as it is not conllinear, determine that the side of screen body exists and deformed as caused by screen body warpage.
It should be appreciated that first threshold can be zero, second threshold can be 0.05.First threshold and second threshold determination side
There are many formulas, such as can specific location according to first group of continuous two o'clock with second group of continuous two o'clock on the side of screen body viewing area
Choose different values.
In the embodiment of the present invention, continuously choose at 1 points on the side of screen body, by calculating the in 1 points
The coordinate of one group of continuous two o'clock obtains first slope, and the coordinate by calculating second group of continuous two o'clock in 1 points obtains the
Two slopes.The absolute value for calculating the difference of first slope and the second slope, by comparing absolute value and first threshold and the second threshold
The relationship of value judges whether first group of continuous two o'clock and second group of continuous two o'clock are conllinear, to judge continuously choose at least three
Whether a point is conllinear, and then judges that the side of screen body whether there is and deform as caused by screen body warpage.
Fig. 5 show the flow diagram of the further embodiment of embodiment illustrated in fig. 2.As shown in figure 5, above-mentioned steps
101: the side of judgement screen body whether there is to be deformed as caused by screen body warpage, further includes:
Step 1016 before step 1015: it is shown with second group of continuous two o'clock in screen body according to first group of continuous two o'clock
The specific location setting first threshold and second threshold on the side in area.
Specifically, the side of screen body viewing area is divided into interlude and two sides section, first group of continuous two o'clock and second group of company
Continuous two o'clock is located at two sides section, and with first group of continuous two o'clock compared with second group of continuous two o'clock is respectively positioned on interlude, first threshold becomes
Greatly, second threshold becomes larger.
Specific location setting first by first group of continuous two o'clock with second group of continuous two o'clock on the side of screen body viewing area
Threshold value and second threshold can more accurately judge the side for shielding body with the presence or absence of the deformation as caused by screen body warpage.
Fig. 6 show the flow diagram of the further embodiment of embodiment illustrated in fig. 5.As shown in fig. 6, step 1011:
Continuously choose at 1 points on the side of the viewing area of screen body, comprising the following steps:
Step 10111: continuously choosing a point of 3N (N >=1) on the side of the viewing area of screen body；
Specifically, N is integer and N >=1.
Step 10112: 3N point is divided into N number of grouping；
Step 1012: including step 1012 ': being calculated and obtained according to first group of continuous two o'clock in each grouping in 3 points
First slope；
Step 1013: including step 1013 ': being calculated and obtained according to second group of continuous two o'clock in each grouping in 3 points
Second slope；
Specifically, since only there are three points for each grouping, at this point, first group of continuous two o'clock has with second group of continuous two o'clock
One common ground.
Step 1014: including step 1014 ': calculating the absolute of the first slope of each grouping and the difference of the second slope
Value；
Specifically, calculating separately the first slope and the second slope of first group of continuous two o'clock and second group of continuous two o'clock
The absolute value of difference.
Step 1016 includes: step 1016 ': according to 3 points in each grouping screen body viewing area side specific position
Install the first threshold and second threshold of surely each grouping.
Specifically, the side of screen body viewing area can be divided into interlude and two sides section, positioned at each grouping of two sides section
Three points, be located at interlude compared with, first threshold becomes larger, and second threshold becomes larger.The side of screen body viewing area can also be divided
For M sections (M≤N), each section of first threshold is different from second threshold.According to 3 points in each grouping of selection in screen body
Which specific section in the M section on the side of viewing area, to set the first threshold and second threshold of each grouping.The present invention is implemented
Example is specifically divided into how many sections without limitation to the side of the viewing area of screen body.
Step 1015 includes:
Step 10151: comparing the first slope of each grouping and the absolute value of the difference of the second slope and corresponding first
Threshold value and second threshold；
Step 10152: when first slope and the absolute value of the difference of the second slope of at least one grouping are greater than corresponding
First threshold and be less than corresponding second threshold, determine screen body side exist as caused by screen body warpage deform.
When the point continuously chosen is more, it can be grouped judgement, improve computational efficiency, save and calculate the time.
In one embodiment, the distance of first group of continuous point-to-point transmission is identical at a distance from second group of continuous point-to-point transmission；The
In two groups of continuous two o'clocks close to first group of continuous two o'clock a little and in first group of continuous two o'clock close to second group of continuous two o'clock
The distance of any is regular length.
Specifically, as shown in figure 3, second point A2 is for the first point A1 and thirdly if continuously choosing three points
The midpoint of the connecting line of A3, regular length zero.As shown in figure 4, if continuously choosing four points, the first point A1 and second
The distance between point A2 is equal with the distance between the 4th point A4 with thirdly A3.Second point A2 and thirdly the distance between A3
For regular length.
It should be appreciated that fixed step size can be one when 1 points continuously chosen are more than or equal to four
The length of sub-pixel is also possible to the length of two sub-pixels.The embodiment of the present invention is not specifically limited regular length.It is fixed
The accuracy of slope calculating can be improved in the setting of length, and the side for further increasing judgement screen body whether there is is led by screen body warpage
The accuracy of the deformation of cause.
It should be understood that when the point continuously chosen is at least at four multiple groupings can be carried out to these points, according to this
Multiple groupings determine multiple slopes, and compare this multiple slope simultaneously, and whether the absolute value of the difference of any two slope is full
Foot is greater than corresponding first threshold and is less than corresponding second threshold；Or any two slopes for choosing two groups carry out difference
The comparison of absolute value, sees whether it meets greater than corresponding first threshold and be less than corresponding second threshold, to carry out next
The judgement of step.
In one embodiment, first group of continuous two o'clock and second group of continuous two o'clock have a common ground.As shown in figure 3,
First group of continuous two o'clock A1 has a common ground A2 with A2 and second group of continuous two o'clock A2 and A3, so, it is ensured that based on
The point for calculating first slope and the second slope has a common ground, and the accuracy of first slope Yu the second slope can be improved.To,
The side for further increasing judgement screen body whether there is the accuracy of the deformation as caused by screen body warpage.Fig. 7 show the present invention one
The angle of judgement screen body is with the presence or absence of the deformation as caused by screen body warpage in a kind of screen body warpage detection method that embodiment provides
Flow diagram.Fig. 7 show in a kind of screen body warpage detection method of one embodiment of the invention offer and constructs the first preset areas
The position view in domain.As shown in fig. 7, above-mentioned steps 102: the angle of judgement screen body whether there is to be become as caused by screen body warpage
Shape includes the following steps:
Step 1021: determining the angle inflection point of the viewing area of screen body；
Specifically, the viewing area of screen body there are angle, determines that angle inflection point is conducive to be accurately positioned angular zone, to be shielded
The angle of body whether there is the judgement of the deformation as caused by screen body warpage.
Step 1022: choosing a bit on the side for the viewing area being connected with angle inflection point；
Step 1023: constructing the first predeterminable area using any as starting point；
Specifically, it is determined that after the inflection point of angle, need to choose a bit on the side for the viewing area being connected with angle inflection point
The first predeterminable area is constructed as starting point.A bit on the side for the viewing area being connected with angle inflection point is chosen, is from viewing area
Selected point starts to draw first area on side, is not drafting first area, such reconnaissance, the first preset areas since inflection point is directly
Domain is easier to include entire angular zone.The omission of angular zone is avoided, to improve the accuracy of school survey.
It should be appreciated that can be method as follows in the method that any constructs the first predeterminable area as starting point.Such as Fig. 8 institute
Show, when A5 is inflection point, using A6 as starting point, drafting length is a, and width is the rectangle of b.Wherein the value of a and b can be according to practical need
Ask determining.Although first predeterminable area is constructed with positional relationship shown in Fig. 8, this and to should not be construed first default
Region can only be constructed according to positional relationship shown in Fig. 8.As long as on the side for the viewing area being connected with angle inflection point is a little
Point the first predeterminable area of construction, the embodiment of the present invention to the specific configuration mode of the first predeterminable area without limitation.
Step 1024: calculating the area of the angular zone corresponding with angle inflection point in the first predeterminable area；
Specifically, there is angular zone corresponding with angle inflection point and non-angular zone in the first predeterminable area, it can be with
The area of angular zone is calculated for further judging.
It should be appreciated that the method for calculating angular zone area can be the calculation method of computer binaryzation, it is also possible to root
According to the calculation method of the projection polynomial fitting of angular zone in the horizontal plane, as long as the area of angular zone can be calculated,
The calculation method of diagonal zones area of the embodiment of the present invention is not specifically limited.
Step 1025: when the value of area is in the first preset range, the angle of judgement screen body exists as caused by screen body warpage
Deformation；
Specifically, the angle of screen body as caused by screen body warpage there is no when deforming, the angular zone of no deformation is in preset areas
The value of area in domain is maximum value, and area of the angular zone of deformation in predeterminable area is both less than maximum value.First default model
Enclosing can be set with reference to the factors such as maximum value and combination tolerance.When the value of area of the angular zone in predeterminable area is
In one preset range, determines that the angle of screen body exists and deformed as caused by screen body warpage.
It should be appreciated that a screen body includes at least one angle.It is tool there are four when the rectangle screen body of fillet when shielding body, then has
There are four angles, then just there are four the first preset ranges, the value range of this four the first preset ranges can be different.First is pre-
If range can be located at the different location of screen body according to angle and different screen body types choose different ranges.The embodiment of the present invention
The value of first preset range is not specifically limited.
In the embodiment of the present invention, by determining the position of angle inflection point, on the side for the viewing area being connected with angle inflection point
A little first predeterminable area of construction calculates the area of the angular zone in the first predeterminable area, by comparing in the first predeterminable area
Angular zone area whether in the first preset range, to judge the angle for shielding body with the presence or absence of the change as caused by screen body warpage
Shape.
In one embodiment, when all sides for shielding body, which are all not present, to be deformed as caused by screen body warpage, then judge to shield
The angle of body whether there is to be deformed as caused by screen body warpage.
Specifically, can determine that screen body is deposited when at least one side for shielding body exists and deforms as caused by screen body warpage
In warpage, deformed as caused by screen body warpage without whether there is at the angle of judgement screen body.When all sides of screen body are all not present
When deforming as caused by screen body warpage, then judge the angle for shielding body with the presence or absence of the deformation as caused by screen body warpage.Improve work effect
Rate and can be to avoid the missing inspection of warpage.
In a further embodiment, first group of continuous two o'clock and second group of continuous two o'clock have a common ground；Wherein,
The angle inflection point for determining the viewing area of screen body includes: the absolute value of the difference when first slope Yu the second slope more than or equal to second
Threshold value determines that common ground is inflection point；Choosing on the side for the viewing area being connected with angle inflection point a little includes: to choose first group of company
A bit of non-angle inflection point in continuous group two o'clock；Or choose second group continuously organize non-angle inflection point in two o'clock a bit.
Specifically, as shown in figure 8, first group of continuous two o'clock A4 has one to be total to A5 and second group of continuous two o'clock A5 and A6
With point A5.It is calculated according to A4 and A5 and obtains first slope, calculated according to A5 and A6 and obtain the second slope.Calculate first slope and the
The absolute value of the difference of two slopes.When the absolute value of first slope and the difference of the second slope is greater than first threshold and less than second
Threshold value determines that the side of screen body exists and deforms as caused by screen body warpage.Can determine that screen body, there are warpages, without shielding body in judgement
Angle whether there is as caused by screen body warpage deform.When the absolute value of first slope and the difference of the second slope is more than or equal to the
Two threshold values, it is determined that common ground A5 is angle inflection point.Selected point A4 or A6 constructs the first predeterminable area according to above-mentioned steps 1023,
The area that angular zone is calculated according to above-mentioned steps 1024 exists according to the angle for being the judgement screen body of above-mentioned steps 1025 by screen body warpage
Caused deformation, details are not described herein.
Fig. 9 show in a kind of screen body warpage detection method of one embodiment of the invention offer and calculates in the first predeterminable area
The flow diagram of the area of angular zone corresponding with angle inflection point.As shown in figure 9, above-mentioned steps 1024: calculating pre- first
If the area of angular zone corresponding with angle inflection point, includes the following steps: in region
Step 10241: angular zone and non-angular zone in the first predeterminable area of binary conversion treatment；
Specifically, computer obtains the image of the first predeterminable area, since screen body is in point when carrying out warpage detection
Bright state, so angular zone is the state lighted, non-angular zone is not illuminating state, and computer is to the first predeterminable area binaryzation
The region default value lighted is 1 by processing, and non-dots bright area default value is 0.
Step 10242: according to binarization result, calculating the area of angular zone.
Specifically, computer calculates the area that default value is 1 according to binarization result.
As long as calculating the area that default value is 1 it should be appreciated that computer can be realized according to binarization result, the present invention
Embodiment to specific calculating process without limitation.By computer binary conversion treatment result calculate angular zone area it is more acurrate and
It is more convenient.
Figure 10 show a kind of flow diagram of screen body warpage detection method of one embodiment of the invention offer.Such as Figure 10
It is shown, shield body warpage detection method further include: step 100: obtaining the side of the viewing area of screen body.
Screen body has viewing area and non-display area, judges that the side for shielding body whether there is and deforms and sentence as caused by screen body warpage
The angle of disconnected screen body whether there is to be deformed as caused by screen body warpage, is all to need to carry out on the basis of knowing the side of viewing area.
Figure 11 show the viewing area that screen body is obtained in a kind of screen body warpage detection method of one embodiment of the invention offer
Side flow diagram.As shown in figure 11, above-mentioned steps 100: the side of the viewing area of screen body is obtained, is included the following steps:
Step 1001: lighting screen body；
Specifically, screen body needs are lit, due to screen body when shielding body progress warpage detection or screen volume defect detection
Viewing area have sub-pixel, light the sub-pixel of viewing area, the viewing area for shielding body is just lit.
Step 1002: obtaining the image of screen body；
Specifically, the image of screen body can be obtained by equipment such as cameras.
It should be appreciated that the image of screen body needs to can be clearly seen that sub-pixel, as long as the image of the screen body obtained can
It can be clearly seen that sub-pixel, the embodiment of the present invention is not specifically limited the equipment for obtaining screen body image.
Step 1003: empty burnt processing image obtains image after empty burnt processing；
Specifically, it is each height since each sub-pixel in viewing area is lit that screen body viewing area, which can be lit,
There is small gap between pixel, when shooting image, the gap between each sub-pixel will affect the acquisition on the side of viewing area, because
This handles figure virtualization, so that the micro gap between each sub-pixel is blurred.
Realize empty burnt processing image as long as should be appreciated that, the embodiment of the present invention to specific weakening method without limitation.
Step 1004: image after the empty burnt processing of binary conversion treatment；
It is 1 by the border region default value of viewing area specifically, carrying out binary conversion treatment to image after empty burnt processing, it is non-
Border region default value is 0.
Step 1005: according to binarization result, obtaining the side of the viewing area of screen body.
Specifically, computer obtains the side for the viewing area that default value is 1 according to binarization result.
As long as the side for obtaining the viewing area that default value is 1 is it should be appreciated that computer can be realized according to binarization result
Can, the embodiment of the present invention to specific acquisition process without limitation.
In the embodiment of the present invention, image is handled by virtualization, the micro gap between each pixel is fallen in virtualization, can be more clear
The viewing area of clear presentation screen body and non-display area.The viewing area of screen body is obtained by image after the empty burnt processing of binaryzation
Side can accurately describe the side of the viewing area of screen body, improve the accuracy of screen body warpage detection.Figure 12 show the present invention one
A kind of flow diagram for screen body warpage detection method that embodiment provides.As shown in figure 12, the screen body warpage detection method is also
The following steps are included:
Step 201: obtaining the reference side length and reference angle angle of the viewing area of screen body；
Specifically, screen body viewing area is to shield the side length of viewing area when warpage is not present in body referring to side length.Screen body is shown
The reference angle angle in area is to shield the angle angle of viewing area when warpage is not present in body.
It should be appreciated that the preparation method referring to side length and reference angle angle of the viewing area of screen body can be following method:
With in batch screen body through desk checking filter out no warpage reference shield, light referring to screen, obtain referring to screen reference side length with
Reference angle angle.The preparation method referring to side length and reference angle angle for shielding the viewing area of body can also be in the following manner: manufacturing
When shielding body, the design parameter of the viewing area of screen body is obtained, using the design side length of viewing area as reference side length, by setting for viewing area
Angle angle is counted as participation angle angle.As long as the reference side length and reference angle angle of the viewing area of available screen body, this
Inventive embodiments to specific acquisition methods without limitation.
Step 202: according to the orthographic projection of the viewing area of screen body in the horizontal plane, the side of the viewing area of fitting screen body；
Specifically, screen body can be lain on horizontal absorption platform, when screen body carries out warpage detection according to screen body
Orthographic projection of the viewing area in horizontal plane, the side of the viewing area of fitting screen body.
It should be appreciated that the method on the side of the viewing area of fitting screen body can be fitting of a polynomial etc., as long as may be implemented to intend
Close screen body viewing area side, the embodiment of the present invention to specific approximating method without limitation.
Step 203: obtaining the fitting side length and fitting angle angle of screen body viewing area；
Specifically, obtaining fitting side length and the fitting angle angle of screen body viewing area according to the fitting side of the viewing area of screen body
Degree.
It should be appreciated that obtaining fitting side length and fitting angle angle according to fitting side can be manual measurement and is also possible to machine
Measurement, as long as available fitting side length and fitting angle angle, the embodiment of the present invention are not specifically limited acquisition methods.
Step 101: the side of judgement screen body whether there is to be deformed as caused by screen body warpage, is included the following steps:
Step 1011 ＂: it calculates referring to the absolute value of side length and the difference for fitting side length to obtain the first absolute value；And
Step 1012 ＂: when the first absolute value is greater than third threshold value, the side of judgement screen body exists to be become as caused by screen body warpage
Shape；
Specifically, determining the side of screen body when the absolute value referring to side length and the difference for fitting side length is greater than third threshold value
Determine that the side of screen body exists to deform as caused by screen body warpage.
It should be appreciated that third threshold value can be zero, it is also possible to other values.Third threshold value is to be manually set, Ke Yigen
Different values is chosen according to different screen bodies.
Step 102: the angle of judgement screen body whether there is to be deformed as caused by screen body warpage, is included the following steps:
Step 1021 ＂: reference angle angle is calculated with the absolute value for the difference for fitting angle angle to obtain the second absolute value；With
And
Step 1022 ＂: when the second absolute value is greater than the 4th threshold value, the angle of judgement screen body exists to be become as caused by screen body warpage
Shape.
Specifically, determining screen body when reference angle angle and the absolute value for the difference for fitting angle angle are greater than the 4th threshold value
Angle exist as caused by screen body warpage deform.
It should be appreciated that the 4th threshold value can be zero, it is also possible to other values.4th threshold value can be selected according to different screen bodies
Take different values.
A kind of screen body warpage detection method provided in an embodiment of the present invention is intended by the side of the viewing area of fitting screen body
Close side length and fitting angle angle.By being compared respectively referring to side length and fitting side length, to judge that the side for shielding body exists by screen body
Deformation caused by warpage.It is stuck up to judge that the angle for shielding body whether there is by screen body by comparing reference angle angle with angle angle is fitted
Deformation caused by bent.And then judge that screen body whether there is warpage.
When the absolute value referring to side length and the difference for fitting side length is greater than third threshold value, the side of judgement screen body determines screen body
Side exists to be deformed as caused by screen body warpage.When the absolute value of reference angle angle and the difference for fitting angle angle is greater than the 4th threshold
Value determines that the angle of screen body exists and deforms as caused by screen body warpage.Caused when at least one side of screen body exists by screen body warpage
Deformation or at least one angle for shielding body exist when being deformed as caused by screen body warpage, determine that there are warpages for the screen body.By
This can accurately determine that shielding body be in warped state, so that avoiding shield body warpage is mistaken for screen volume defect, save manually again
Resource is examined, material waste is avoided.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, made any modification, equivalent replacement etc. be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of screen body warpage detection method characterized by comprising
Judge the side of the screen body with the presence or absence of the deformation as caused by screen body warpage；
Judge the angle of the screen body with the presence or absence of the deformation as caused by screen body warpage；And
It is deposited when at least one side of the screen body has at least one angle of deformation or the screen body as caused by screen body warpage
When deforming as caused by screen body warpage, determine that there are warpages for the screen body.
2. screen body warpage detection method according to claim 1, which is characterized in that whether the side for judging the screen body
Include: in the presence of the deformation as caused by screen body warpage
Continuously choose at 1 points on the side of the viewing area of the screen body；
It is calculated according to first group of continuous two o'clock in described 1 points and obtains first slope；
It is calculated according to second group of continuous two o'clock in described 1 points and obtains the second slope；
Calculate the absolute value of the difference of the first slope and second slope；And
When the absolute value of the first slope and the difference of second slope is greater than first threshold and less than second threshold, judgement
The side of the screen body exists to be deformed as caused by screen body warpage.
3. screen body warpage detection method according to claim 2, which is characterized in that first group of continuous point-to-point transmission away from
From identical at a distance from second group of continuous point-to-point transmission；Close to first group of continuous two o'clock in second group of continuous two o'clock
A little in first group of continuous two o'clock close to second group of continuous two o'clock any at a distance from be regular length.
4. screen body warpage detection method according to claim 2, which is characterized in that first group of continuous two o'clock with it is described
Second group of continuous two o'clock has a common ground.
5. screen body warpage detection method according to claim 1-4, which is characterized in that the judgement screen body
Angle whether there is as caused by screen body warpage deformation include；
Determine the angle inflection point of the viewing area of the screen body:
Choose a bit on the side for the viewing area being connected with the angle inflection point；
The first predeterminable area is constructed with more described for starting point:
Calculate the area of the angular zone corresponding with the angle inflection point in first predeterminable area；And
When the value of the area is in the first preset range, determine that the angle of the screen body has the deformation as caused by screen body warpage.
6. screen body warpage detection method according to claim 5, which is characterized in that when all sides of the screen body are not deposited
When deforming as caused by screen body warpage, then judge the angle of the screen body with the presence or absence of the deformation as caused by screen body warpage.
7. screen body warpage detection method according to claim 6, which is characterized in that first group of continuous two o'clock with it is described
Second group of continuous two o'clock has a common ground；
Wherein, the angle inflection point of the viewing area of the determination screen body includes:
When the absolute value of the first slope and the difference of second slope is greater than or equal to second threshold, determine described common
Point is the angle inflection point；
Described choose on the side of viewing area being connected with the angle inflection point a little include:
Choose described first group continuously organize the non-angle inflection point in two o'clock a bit；Or
Choose described second group continuously organize the non-angle inflection point in two o'clock a bit.
8. screen body warpage detection method according to claim 5, which is characterized in that the calculating is in first preset areas
The area of angular zone corresponding with the angle inflection point in domain；Include:
The angular zone and non-angular zone in first predeterminable area described in binary conversion treatment: and
According to binarization result, the area of the angular zone is calculated.
9. according to the described in any item screen body warpage detection methods of claim 2-4, which is characterized in that further include: described in acquisition
Shield the side of the viewing area of body；Preferably, comprising:
Light the screen body；
Obtain the image of the screen body:
Empty burnt processing described image obtains image after empty burnt processing:
Image after the burnt processing of void described in binary conversion treatment；And
According to binarization result, the side of the viewing area of the screen body is obtained.
10. screen body warpage detection method according to claim 1, which is characterized in that the screen body is rectangle screen body, described
Method further include:
Obtain the reference side length and reference angle angle of the viewing area of the screen body；
According to the orthographic projection of the viewing area of the screen body in the horizontal plane, it is fitted the side of the viewing area of the screen body；And
Obtain the fitting side length and fitting angle angle of screen body viewing area；
Wherein, the side of the judgement screen body, which whether there is to deform as caused by screen body warpage, includes:
The absolute value referring to side length and the difference for fitting side length is calculated to obtain the first absolute value；And
When first absolute value be greater than third threshold value, determine the screen body side exist the deformation as caused by screen body warpage；
The angle of the judgement screen body whether there is the deformation as caused by screen body warpage and include:
The absolute value of the reference angle angle and the difference for fitting angle angle is calculated to obtain the second absolute value；And
When second absolute value be greater than the 4th threshold value, determine the screen body angle exist the deformation as caused by screen body warpage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695761.6A CN110243336B (en) | 2019-07-30 | 2019-07-30 | Screen body warping detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695761.6A CN110243336B (en) | 2019-07-30 | 2019-07-30 | Screen body warping detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110243336A true CN110243336A (en) | 2019-09-17 |
| CN110243336B CN110243336B (en) | 2021-08-24 |
Family
ID=67893706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910695761.6A Active CN110243336B (en) | 2019-07-30 | 2019-07-30 | Screen body warping detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110243336B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212812A (en) * | 2020-10-13 | 2021-01-12 | 联想(北京)有限公司 | Detection device and detection method |
| CN113834462A (en) * | 2021-08-05 | 2021-12-24 | 山西光兴光电科技有限公司 | Method and device for detecting warping of glass substrate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156972A (en) * | 2011-04-19 | 2011-08-17 | 清华大学 | Image tilting correcting method and system |
| CN106248053A (en) * | 2016-08-31 | 2016-12-21 | 铁道第三勘察设计院集团有限公司 | Existing Railway Line plane center line manufacture method based on aerial survey mode |
| KR20170106035A (en) * | 2016-03-11 | 2017-09-20 | 강원대학교산학협력단 | Prediction Method of Slope Failure |
| CN108280822A (en) * | 2017-12-20 | 2018-07-13 | 歌尔科技有限公司 | The detection method and device of screen cut |
| CN207730192U (en) * | 2017-09-07 | 2018-08-14 | 昆山世铭金属塑料制品有限公司 | A kind of rotatory testboard of casing deformation detection |
-
2019
- 2019-07-30 CN CN201910695761.6A patent/CN110243336B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156972A (en) * | 2011-04-19 | 2011-08-17 | 清华大学 | Image tilting correcting method and system |
| KR20170106035A (en) * | 2016-03-11 | 2017-09-20 | 강원대학교산학협력단 | Prediction Method of Slope Failure |
| CN106248053A (en) * | 2016-08-31 | 2016-12-21 | 铁道第三勘察设计院集团有限公司 | Existing Railway Line plane center line manufacture method based on aerial survey mode |
| CN207730192U (en) * | 2017-09-07 | 2018-08-14 | 昆山世铭金属塑料制品有限公司 | A kind of rotatory testboard of casing deformation detection |
| CN108280822A (en) * | 2017-12-20 | 2018-07-13 | 歌尔科技有限公司 | The detection method and device of screen cut |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212812A (en) * | 2020-10-13 | 2021-01-12 | 联想(北京)有限公司 | Detection device and detection method |
| CN113834462A (en) * | 2021-08-05 | 2021-12-24 | 山西光兴光电科技有限公司 | Method and device for detecting warping of glass substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110243336B (en) | 2021-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105335963A (en) | Edge defect detection method and apparatus | |
| CN110243336A (en) | Shield body warpage detection method | |
| WO2022110219A1 (en) | Inspection method, device, and system for display panel | |
| CN101738401A (en) | Defect inspection device and defect inspection method | |
| JP6988500B2 (en) | Inspection management system, inspection management device, inspection management method | |
| WO2019169822A1 (en) | Display panel inspection method and device and automated optical detection apparatus | |
| US9606020B2 (en) | Method of evaluating optical characteristics of transparent substrate | |
| CN107515481A (en) | The detection method and device of a kind of display panel | |
| EP2584307A1 (en) | Glass bottle inspection device | |
| JP2019125693A (en) | Inspection management system, inspection management device, inspection management method | |
| JP4695792B2 (en) | Nondestructive wall thickness inspection method for structural parts | |
| KR101980755B1 (en) | Apparatus for automatic inspection of the color difference mura for the display panel and method for the same | |
| JP2011232279A (en) | Tilt inspection device and tilt inspection method | |
| JP5187851B2 (en) | Inspection apparatus and inspection method | |
| JPH0399376A (en) | Device for inspecting picture quality | |
| CN108986721A (en) | A kind of test pattern generation method for display panel detection | |
| JP2006234667A (en) | Device and method of bump inspection | |
| JP5050398B2 (en) | Display panel inspection method, inspection apparatus, and manufacturing method | |
| CN109975321A (en) | A kind of defect inspection method and device for FPC | |
| JP2005351875A (en) | Casting cavity measuring method | |
| KR20130051726A (en) | System for judging defect of warpage in light guide plate and method for judging defect of warpage in light guide plate using the same | |
| CN107833841A (en) | Defect inspection method | |
| EP2372650A1 (en) | Method for mura effect level measurement of a display | |
| CN105652480B (en) | Substrate detection apparatus, method of testing substrate and substrate detection module | |
| JP3154425U (en) | Inspection method and inspection apparatus for translucent body |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |